Inc refactoring, Value helper test method extractions, and more integration helpers. (#1135)

* Manifests check. Ignore doctests for now.

* We continue with refactorings towards the separation of concerns between
crates. `nu_plugin_inc` and `nu_plugin_str` common test helpers usage
has been refactored into `nu-plugin` value test helpers.

Inc also uses the new API for integration tests.

Cargo.lock

@@ -1986,7 +1986,6 @@ dependencies = [
  "roxmltree",
  "rusqlite",
  "rustyline",
- "semver",
  "serde 1.0.103",
  "serde-hjson 0.9.1",
  "serde_bytes",
@@ -2215,7 +2214,6 @@ dependencies = [
 name = "nu_plugin_inc"
 version = "0.7.0"
 dependencies = [
- "indexmap",
  "nu-build",
  "nu-errors",
  "nu-plugin",
@@ -2275,7 +2273,6 @@ dependencies = [
 name = "nu_plugin_str"
 version = "0.7.0"
 dependencies = [
- "indexmap",
  "nu-build",
  "nu-errors",
  "nu-plugin",

Cargo.toml

@@ -134,7 +134,6 @@ onig_sys = {version = "=69.1.0", optional = true }
 crossterm = {version = "0.10.2", optional = true}
 futures-timer = {version = "1.0.2", optional = true}
 url = {version = "2.1.0", optional = true}
-semver = {version = "0.9.0", optional = true}
 
 [features]
 default = ["sys", "ps", "textview", "inc", "str"]
@@ -144,7 +143,7 @@ stable = ["sys", "ps", "textview", "inc", "str", "starship-prompt", "binaryview"
 sys = ["heim", "battery"]
 ps = ["heim", "futures-timer"]
 textview = ["crossterm", "syntect", "onig_sys", "url"]
-inc = ["semver"]
+inc = ["nu_plugin_inc"]
 str = ["nu_plugin_str"]
 
 # Stable
@@ -173,6 +172,7 @@ nu-build = { version = "0.7.0", path = "./crates/nu-build" }
 
 [lib]
 name = "nu"
+doctest = false
 path = "src/lib.rs"
 
 # Core plugins that ship with `cargo install nu` by default

crates/nu-build/Cargo.toml

@@ -6,7 +6,8 @@ edition = "2018"
 description = "Core build system for nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[lib]
+doctest = false
 
 [dependencies]
 serde = { version = "1.0.103", features = ["derive"] }

crates/nu-errors/Cargo.toml

@@ -6,7 +6,8 @@ edition = "2018"
 description = "Core error subsystem for Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[lib]
+doctest = false
 
 [dependencies]
 nu-source = { path = "../nu-source", version = "0.7.0" }

crates/nu-macros/Cargo.toml

@@ -1,12 +1,13 @@
 [package]
 name = "nu-macros"
 version = "0.7.0"
-authors = ["Yehuda Katz <wycats@gmail.com>"]
+authors = ["Yehuda Katz <wycats@gmail.com>", "Jonathan Turner <jonathan.d.turner@gmail.com>", "Andrés N. Robalino <andres@androbtech.com>"]
 edition = "2018"
 description = "Core macros for building Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[lib]
+doctest = false
 
 [dependencies]
 nu-protocol = { path = "../nu-protocol", version = "0.7.0" }

crates/nu-parser/Cargo.toml

@@ -6,7 +6,8 @@ edition = "2018"
 description = "Core parser used in Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[lib]
+doctest = false
 
 [dependencies]
 nu-errors = { path = "../nu-errors", version = "0.7.0" }

crates/nu-plugin/Cargo.toml

@@ -6,7 +6,8 @@ edition = "2018"
 description = "Nushell Plugin"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[lib]
+doctest = false
 
 [dependencies]
 nu-protocol = { path = "../nu-protocol", version = "0.7.0" }

crates/nu-plugin/src/test_helpers.rs

@@ -1,9 +1,8 @@
 use crate::Plugin;
 use indexmap::IndexMap;
 use nu_errors::ShellError;
-use nu_protocol::{CallInfo, EvaluatedArgs, Primitive, ReturnValue, UntaggedValue, Value};
+use nu_protocol::{CallInfo, EvaluatedArgs, ReturnSuccess, ReturnValue, UntaggedValue, Value};
 use nu_source::Tag;
-use nu_value_ext::ValueExt;
 
 pub struct PluginTest<'a, T: Plugin> {
     plugin: &'a mut T,
@@ -100,20 +99,6 @@ impl<'a, T: Plugin> PluginTest<'a, T> {
 pub fn plugin<T: Plugin>(plugin: &mut T) -> PluginTest<T> {
     PluginTest::for_plugin(plugin)
 }
-
-pub fn table(list: &Vec<Value>) -> Value {
-    UntaggedValue::table(list).into_untagged_value()
-}
-
-pub fn column_path(paths: &Vec<Value>) -> Value {
-    UntaggedValue::Primitive(Primitive::ColumnPath(
-        table(&paths.iter().cloned().collect())
-            .as_column_path()
-            .unwrap()
-            .item,
-    ))
-    .into_untagged_value()
-}
 pub struct CallStub {
     positionals: Vec<Value>,
     flags: IndexMap<String, Value>,
@@ -146,7 +131,7 @@ impl CallStub {
             .map(|s| UntaggedValue::string(s.to_string()).into_value(Tag::unknown()))
             .collect();
 
-        self.positionals.push(column_path(&fields));
+        self.positionals.push(value::column_path(&fields));
         self
     }
 
@@ -157,3 +142,71 @@ impl CallStub {
         }
     }
 }
+
+pub fn expect_return_value_at(
+    for_results: Result<Vec<Result<ReturnSuccess, ShellError>>, ShellError>,
+    at: usize,
+) -> Value {
+    let return_values = for_results
+        .expect("Failed! This seems to be an error getting back the results from the plugin.");
+
+    for (idx, item) in return_values.iter().enumerate() {
+        let item = match item {
+            Ok(return_value) => return_value,
+            Err(reason) => panic!(format!("{}", reason)),
+        };
+
+        if idx == at {
+            return item.raw_value().unwrap();
+        }
+    }
+
+    panic!(format!(
+        "Couldn't get return value from stream at {}. (There are {} items)",
+        at,
+        return_values.len() - 1
+    ))
+}
+
+pub mod value {
+    use nu_protocol::{Primitive, TaggedDictBuilder, UntaggedValue, Value};
+    use nu_source::Tag;
+    use nu_value_ext::ValueExt;
+    use num_bigint::BigInt;
+
+    pub fn get_data(for_value: Value, key: &str) -> Value {
+        for_value.get_data(&key.to_string()).borrow().clone()
+    }
+
+    pub fn int(i: impl Into<BigInt>) -> Value {
+        UntaggedValue::Primitive(Primitive::Int(i.into())).into_untagged_value()
+    }
+
+    pub fn string(input: impl Into<String>) -> Value {
+        UntaggedValue::string(input.into()).into_untagged_value()
+    }
+
+    pub fn structured_sample_record(key: &str, value: &str) -> Value {
+        let mut record = TaggedDictBuilder::new(Tag::unknown());
+        record.insert_untagged(key.clone(), UntaggedValue::string(value));
+        record.into_value()
+    }
+
+    pub fn unstructured_sample_record(value: &str) -> Value {
+        UntaggedValue::string(value).into_value(Tag::unknown())
+    }
+
+    pub fn table(list: &Vec<Value>) -> Value {
+        UntaggedValue::table(list).into_untagged_value()
+    }
+
+    pub fn column_path(paths: &Vec<Value>) -> Value {
+        UntaggedValue::Primitive(Primitive::ColumnPath(
+            table(&paths.iter().cloned().collect())
+                .as_column_path()
+                .unwrap()
+                .item,
+        ))
+        .into_untagged_value()
+    }
+}

crates/nu-protocol/Cargo.toml

@@ -6,7 +6,8 @@ edition = "2018"
 description = "Core values and protocols for Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[lib]
+doctest = false
 
 [dependencies]
 nu-source = { path = "../nu-source", version = "0.7.0" }

crates/nu-source/Cargo.toml

@@ -6,7 +6,8 @@ edition = "2018"
 description = "A source string characterizer for Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[lib]
+doctest = false
 
 [dependencies]
 serde = { version = "1.0.103", features = ["derive"] }

crates/nu-test-support/Cargo.toml

@@ -6,7 +6,8 @@ edition = "2018"
 description = "A source string characterizer for Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[lib]
+doctest = false
 
 [dependencies]
 app_dirs = "1.2.1"

crates/nu-value-ext/Cargo.toml

@@ -6,7 +6,8 @@ edition = "2018"
 description = "Extension traits for values in Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[lib]
+doctest = false
 
 [dependencies]
 nu-source = { path = "../nu-source", version = "0.7.0" }

crates/nu_plugin_average/Cargo.toml

@@ -6,8 +6,6 @@ edition = "2018"
 description = "An average value plugin for Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 nu-plugin = { path = "../nu-plugin", version="0.7.0" }
 nu-protocol = { path = "../nu-protocol", version = "0.7.0" }

crates/nu_plugin_binaryview/Cargo.toml

@@ -6,8 +6,6 @@ edition = "2018"
 description = "A binary viewer plugin for Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 ansi_term = "0.12.1"
 crossterm = { version = "0.10.2" }

crates/nu_plugin_fetch/Cargo.toml

@@ -6,8 +6,6 @@ edition = "2018"
 description = "A URL fetch plugin for Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 nu-plugin = { path = "../nu-plugin", version="0.7.0" }
 nu-protocol = { path = "../nu-protocol", version = "0.7.0" }

crates/nu_plugin_inc/Cargo.toml

@@ -6,7 +6,8 @@ edition = "2018"
 description = "A version incrementer plugin for Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[lib]
+doctest = false
 
 [dependencies]
 nu-plugin = { path = "../nu-plugin", version="0.7.0" }
@@ -15,7 +16,6 @@ nu-source = { path = "../nu-source", version = "0.7.0" }
 nu-errors = { path = "../nu-errors", version = "0.7.0" }
 nu-value-ext = { path = "../nu-value-ext", version = "0.7.0" }
 semver = "0.9.0"
-indexmap = "1.3.0"
 
 [build-dependencies]
 nu-build = { version = "0.7.0", path = "../nu-build" }

crates/nu_plugin_inc/src/inc.rs

@@ -0,0 +1,179 @@
+use nu_errors::ShellError;
+use nu_protocol::{did_you_mean, ColumnPath, Primitive, ShellTypeName, UntaggedValue, Value};
+use nu_source::{span_for_spanned_list, HasSpan, SpannedItem, Tagged};
+use nu_value_ext::ValueExt;
+
+#[derive(Debug, Eq, PartialEq)]
+pub enum Action {
+    SemVerAction(SemVerAction),
+    Default,
+}
+
+#[derive(Debug, Eq, PartialEq)]
+pub enum SemVerAction {
+    Major,
+    Minor,
+    Patch,
+}
+
+pub struct Inc {
+    pub field: Option<Tagged<ColumnPath>>,
+    pub error: Option<String>,
+    pub action: Option<Action>,
+}
+
+impl Inc {
+    pub fn new() -> Inc {
+        Inc {
+            field: None,
+            error: None,
+            action: None,
+        }
+    }
+
+    fn apply(&self, input: &str) -> Result<UntaggedValue, ShellError> {
+        let applied = match &self.action {
+            Some(Action::SemVerAction(act_on)) => {
+                let mut ver = match semver::Version::parse(&input) {
+                    Ok(parsed_ver) => parsed_ver,
+                    Err(_) => return Ok(UntaggedValue::string(input.to_string())),
+                };
+
+                match act_on {
+                    SemVerAction::Major => ver.increment_major(),
+                    SemVerAction::Minor => ver.increment_minor(),
+                    SemVerAction::Patch => ver.increment_patch(),
+                }
+
+                UntaggedValue::string(ver.to_string())
+            }
+            Some(Action::Default) | None => match input.parse::<u64>() {
+                Ok(v) => UntaggedValue::string(format!("{}", v + 1)),
+                Err(_) => UntaggedValue::string(input),
+            },
+        };
+
+        Ok(applied)
+    }
+
+    pub fn for_semver(&mut self, part: SemVerAction) {
+        if self.permit() {
+            self.action = Some(Action::SemVerAction(part));
+        } else {
+            self.log_error("can only apply one");
+        }
+    }
+
+    fn permit(&mut self) -> bool {
+        self.action.is_none()
+    }
+
+    fn log_error(&mut self, message: &str) {
+        self.error = Some(message.to_string());
+    }
+
+    pub fn usage() -> &'static str {
+        "Usage: inc field [--major|--minor|--patch]"
+    }
+
+    pub fn inc(&self, value: Value) -> Result<Value, ShellError> {
+        match &value.value {
+            UntaggedValue::Primitive(Primitive::Int(i)) => {
+                Ok(UntaggedValue::int(i + 1).into_value(value.tag()))
+            }
+            UntaggedValue::Primitive(Primitive::Bytes(b)) => {
+                Ok(UntaggedValue::bytes(b + 1 as u64).into_value(value.tag()))
+            }
+            UntaggedValue::Primitive(Primitive::String(ref s)) => {
+                Ok(self.apply(&s)?.into_value(value.tag()))
+            }
+            UntaggedValue::Table(values) => {
+                if values.len() == 1 {
+                    Ok(UntaggedValue::Table(vec![self.inc(values[0].clone())?])
+                        .into_value(value.tag()))
+                } else {
+                    Err(ShellError::type_error(
+                        "incrementable value",
+                        value.type_name().spanned(value.span()),
+                    ))
+                }
+            }
+
+            UntaggedValue::Row(_) => match self.field {
+                Some(ref f) => {
+                    let fields = f.clone();
+
+                    let replace_for = value.get_data_by_column_path(
+                        &f,
+                        Box::new(move |(obj_source, column_path_tried, _)| {
+                            match did_you_mean(&obj_source, &column_path_tried) {
+                                Some(suggestions) => ShellError::labeled_error(
+                                    "Unknown column",
+                                    format!("did you mean '{}'?", suggestions[0].1),
+                                    span_for_spanned_list(fields.iter().map(|p| p.span)),
+                                ),
+                                None => ShellError::labeled_error(
+                                    "Unknown column",
+                                    "row does not contain this column",
+                                    span_for_spanned_list(fields.iter().map(|p| p.span)),
+                                ),
+                            }
+                        }),
+                    );
+
+                    let got = replace_for?;
+                    let replacement = self.inc(got.clone())?;
+
+                    match value.replace_data_at_column_path(
+                        &f,
+                        replacement.value.clone().into_untagged_value(),
+                    ) {
+                        Some(v) => Ok(v),
+                        None => Err(ShellError::labeled_error(
+                            "inc could not find field to replace",
+                            "column name",
+                            value.tag(),
+                        )),
+                    }
+                }
+                None => Err(ShellError::untagged_runtime_error(
+                    "inc needs a field when incrementing a column in a table",
+                )),
+            },
+            _ => Err(ShellError::type_error(
+                "incrementable value",
+                value.type_name().spanned(value.span()),
+            )),
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    mod semver {
+        use crate::inc::SemVerAction;
+        use crate::Inc;
+        use nu_plugin::test_helpers::value::string;
+
+        #[test]
+        fn major() {
+            let mut inc = Inc::new();
+            inc.for_semver(SemVerAction::Major);
+            assert_eq!(inc.apply("0.1.3").unwrap(), string("1.0.0").value);
+        }
+
+        #[test]
+        fn minor() {
+            let mut inc = Inc::new();
+            inc.for_semver(SemVerAction::Minor);
+            assert_eq!(inc.apply("0.1.3").unwrap(), string("0.2.0").value);
+        }
+
+        #[test]
+        fn patch() {
+            let mut inc = Inc::new();
+            inc.for_semver(SemVerAction::Patch);
+            assert_eq!(inc.apply("0.1.3").unwrap(), string("0.1.4").value);
+        }
+    }
+}

crates/nu_plugin_inc/src/lib.rs

@@ -0,0 +1,38 @@
+mod inc;
+mod nu_plugin_inc;
+
+pub use inc::Inc;
+
+#[cfg(test)]
+mod tests {
+    use super::Inc;
+    use crate::inc::Action;
+    use nu_protocol::Value;
+    use nu_value_ext::ValueExt;
+
+    impl Inc {
+        pub fn expect_action(&self, action: Action) {
+            match &self.action {
+                Some(set) if set == &action => {}
+                Some(other) => panic!(format!("\nExpected {:#?}\n\ngot {:#?}", action, other)),
+                None => panic!(format!("\nAction {:#?} not found.", action)),
+            }
+        }
+
+        pub fn expect_field(&self, field: Value) {
+            let field = match field.as_column_path() {
+                Ok(column_path) => column_path,
+                Err(reason) => panic!(format!(
+                    "\nExpected {:#?} to be a ColumnPath, \n\ngot {:#?}",
+                    field, reason
+                )),
+            };
+
+            match &self.field {
+                Some(column_path) if column_path == &field => {}
+                Some(other) => panic!(format!("\nExpected {:#?} \n\ngot {:#?}", field, other)),
+                None => panic!(format!("\nField {:#?} not found.", field)),
+            }
+        }
+    }
+}

crates/nu_plugin_inc/src/main.rs

@@ -1,457 +1,6 @@
-use nu_errors::ShellError;
-use nu_plugin::{serve_plugin, Plugin};
-use nu_protocol::{
-    did_you_mean, CallInfo, ColumnPath, Primitive, ReturnSuccess, ReturnValue, ShellTypeName,
-    Signature, SyntaxShape, UntaggedValue, Value,
-};
-use nu_source::{span_for_spanned_list, HasSpan, SpannedItem, Tagged};
-use nu_value_ext::ValueExt;
-
-enum Action {
-    SemVerAction(SemVerAction),
-    Default,
-}
-
-pub enum SemVerAction {
-    Major,
-    Minor,
-    Patch,
-}
-
-struct Inc {
-    field: Option<Tagged<ColumnPath>>,
-    error: Option<String>,
-    action: Option<Action>,
-}
-
-impl Inc {
-    fn new() -> Inc {
-        Inc {
-            field: None,
-            error: None,
-            action: None,
-        }
-    }
-
-    fn apply(&self, input: &str) -> Result<UntaggedValue, ShellError> {
-        let applied = match &self.action {
-            Some(Action::SemVerAction(act_on)) => {
-                let mut ver = match semver::Version::parse(&input) {
-                    Ok(parsed_ver) => parsed_ver,
-                    Err(_) => return Ok(UntaggedValue::string(input.to_string())),
-                };
-
-                match act_on {
-                    SemVerAction::Major => ver.increment_major(),
-                    SemVerAction::Minor => ver.increment_minor(),
-                    SemVerAction::Patch => ver.increment_patch(),
-                }
-
-                UntaggedValue::string(ver.to_string())
-            }
-            Some(Action::Default) | None => match input.parse::<u64>() {
-                Ok(v) => UntaggedValue::string(format!("{}", v + 1)),
-                Err(_) => UntaggedValue::string(input),
-            },
-        };
-
-        Ok(applied)
-    }
-
-    fn for_semver(&mut self, part: SemVerAction) {
-        if self.permit() {
-            self.action = Some(Action::SemVerAction(part));
-        } else {
-            self.log_error("can only apply one");
-        }
-    }
-
-    fn permit(&mut self) -> bool {
-        self.action.is_none()
-    }
-
-    fn log_error(&mut self, message: &str) {
-        self.error = Some(message.to_string());
-    }
-
-    pub fn usage() -> &'static str {
-        "Usage: inc field [--major|--minor|--patch]"
-    }
-
-    fn inc(&self, value: Value) -> Result<Value, ShellError> {
-        match &value.value {
-            UntaggedValue::Primitive(Primitive::Int(i)) => {
-                Ok(UntaggedValue::int(i + 1).into_value(value.tag()))
-            }
-            UntaggedValue::Primitive(Primitive::Bytes(b)) => {
-                Ok(UntaggedValue::bytes(b + 1 as u64).into_value(value.tag()))
-            }
-            UntaggedValue::Primitive(Primitive::String(ref s)) => {
-                Ok(self.apply(&s)?.into_value(value.tag()))
-            }
-            UntaggedValue::Table(values) => {
-                if values.len() == 1 {
-                    Ok(UntaggedValue::Table(vec![self.inc(values[0].clone())?])
-                        .into_value(value.tag()))
-                } else {
-                    Err(ShellError::type_error(
-                        "incrementable value",
-                        value.type_name().spanned(value.span()),
-                    ))
-                }
-            }
-
-            UntaggedValue::Row(_) => match self.field {
-                Some(ref f) => {
-                    let fields = f.clone();
-
-                    let replace_for = value.get_data_by_column_path(
-                        &f,
-                        Box::new(move |(obj_source, column_path_tried, _)| {
-                            match did_you_mean(&obj_source, &column_path_tried) {
-                                Some(suggestions) => ShellError::labeled_error(
-                                    "Unknown column",
-                                    format!("did you mean '{}'?", suggestions[0].1),
-                                    span_for_spanned_list(fields.iter().map(|p| p.span)),
-                                ),
-                                None => ShellError::labeled_error(
-                                    "Unknown column",
-                                    "row does not contain this column",
-                                    span_for_spanned_list(fields.iter().map(|p| p.span)),
-                                ),
-                            }
-                        }),
-                    );
-
-                    let got = replace_for?;
-                    let replacement = self.inc(got.clone())?;
-
-                    match value.replace_data_at_column_path(
-                        &f,
-                        replacement.value.clone().into_untagged_value(),
-                    ) {
-                        Some(v) => Ok(v),
-                        None => Err(ShellError::labeled_error(
-                            "inc could not find field to replace",
-                            "column name",
-                            value.tag(),
-                        )),
-                    }
-                }
-                None => Err(ShellError::untagged_runtime_error(
-                    "inc needs a field when incrementing a column in a table",
-                )),
-            },
-            _ => Err(ShellError::type_error(
-                "incrementable value",
-                value.type_name().spanned(value.span()),
-            )),
-        }
-    }
-}
-
-impl Plugin for Inc {
-    fn config(&mut self) -> Result<Signature, ShellError> {
-        Ok(Signature::build("inc")
-            .desc("Increment a value or version. Optionally use the column of a table.")
-            .switch("major", "increment the major version (eg 1.2.1 -> 2.0.0)")
-            .switch("minor", "increment the minor version (eg 1.2.1 -> 1.3.0)")
-            .switch("patch", "increment the patch version (eg 1.2.1 -> 1.2.2)")
-            .rest(SyntaxShape::ColumnPath, "the column(s) to update")
-            .filter())
-    }
-
-    fn begin_filter(&mut self, call_info: CallInfo) -> Result<Vec<ReturnValue>, ShellError> {
-        if call_info.args.has("major") {
-            self.for_semver(SemVerAction::Major);
-        }
-        if call_info.args.has("minor") {
-            self.for_semver(SemVerAction::Minor);
-        }
-        if call_info.args.has("patch") {
-            self.for_semver(SemVerAction::Patch);
-        }
-
-        if let Some(args) = call_info.args.positional {
-            for arg in args {
-                match arg {
-                    table @ Value {
-                        value: UntaggedValue::Primitive(Primitive::ColumnPath(_)),
-                        ..
-                    } => {
-                        self.field = Some(table.as_column_path()?);
-                    }
-                    value => {
-                        return Err(ShellError::type_error(
-                            "table",
-                            value.type_name().spanned(value.span()),
-                        ))
-                    }
-                }
-            }
-        }
-
-        if self.action.is_none() {
-            self.action = Some(Action::Default);
-        }
-
-        match &self.error {
-            Some(reason) => Err(ShellError::untagged_runtime_error(format!(
-                "{}: {}",
-                reason,
-                Inc::usage()
-            ))),
-            None => Ok(vec![]),
-        }
-    }
-
-    fn filter(&mut self, input: Value) -> Result<Vec<ReturnValue>, ShellError> {
-        Ok(vec![ReturnSuccess::value(self.inc(input)?)])
-    }
-}
+use nu_plugin::serve_plugin;
+use nu_plugin_inc::Inc;
 
 fn main() {
-    serve_plugin(&mut Inc::new());
-}
-
-#[cfg(test)]
-mod tests {
-
-    use super::{Inc, SemVerAction};
-    use indexmap::IndexMap;
-    use nu_plugin::Plugin;
-    use nu_protocol::{
-        CallInfo, EvaluatedArgs, PathMember, ReturnSuccess, TaggedDictBuilder, UnspannedPathMember,
-        UntaggedValue, Value,
-    };
-    use nu_source::{Span, Tag};
-
-    struct CallStub {
-        positionals: Vec<Value>,
-        flags: IndexMap<String, Value>,
-    }
-
-    impl CallStub {
-        fn new() -> CallStub {
-            CallStub {
-                positionals: vec![],
-                flags: indexmap::IndexMap::new(),
-            }
-        }
-
-        fn with_long_flag(&mut self, name: &str) -> &mut Self {
-            self.flags.insert(
-                name.to_string(),
-                UntaggedValue::boolean(true).into_value(Tag::unknown()),
-            );
-            self
-        }
-
-        fn with_parameter(&mut self, name: &str) -> &mut Self {
-            let fields: Vec<PathMember> = name
-                .split(".")
-                .map(|s| {
-                    UnspannedPathMember::String(s.to_string()).into_path_member(Span::unknown())
-                })
-                .collect();
-
-            self.positionals
-                .push(UntaggedValue::column_path(fields).into_untagged_value());
-            self
-        }
-
-        fn create(&self) -> CallInfo {
-            CallInfo {
-                args: EvaluatedArgs::new(Some(self.positionals.clone()), Some(self.flags.clone())),
-                name_tag: Tag::unknown(),
-            }
-        }
-    }
-
-    fn cargo_sample_record(with_version: &str) -> Value {
-        let mut package = TaggedDictBuilder::new(Tag::unknown());
-        package.insert_untagged("version", UntaggedValue::string(with_version));
-        package.into_value()
-    }
-
-    #[test]
-    fn inc_plugin_configuration_flags_wired() {
-        let mut plugin = Inc::new();
-
-        let configured = plugin.config().expect("Can not configure plugin");
-
-        for action_flag in &["major", "minor", "patch"] {
-            assert!(configured.named.get(*action_flag).is_some());
-        }
-    }
-
-    #[test]
-    fn inc_plugin_accepts_major() {
-        let mut plugin = Inc::new();
-
-        assert!(plugin
-            .begin_filter(CallStub::new().with_long_flag("major").create())
-            .is_ok());
-        assert!(plugin.action.is_some());
-    }
-
-    #[test]
-    fn inc_plugin_accepts_minor() {
-        let mut plugin = Inc::new();
-
-        assert!(plugin
-            .begin_filter(CallStub::new().with_long_flag("minor").create())
-            .is_ok());
-        assert!(plugin.action.is_some());
-    }
-
-    #[test]
-    fn inc_plugin_accepts_patch() {
-        let mut plugin = Inc::new();
-
-        assert!(plugin
-            .begin_filter(CallStub::new().with_long_flag("patch").create())
-            .is_ok());
-        assert!(plugin.action.is_some());
-    }
-
-    #[test]
-    fn inc_plugin_accepts_only_one_action() {
-        let mut plugin = Inc::new();
-
-        assert!(plugin
-            .begin_filter(
-                CallStub::new()
-                    .with_long_flag("major")
-                    .with_long_flag("minor")
-                    .create(),
-            )
-            .is_err());
-        assert_eq!(plugin.error, Some("can only apply one".to_string()));
-    }
-
-    #[test]
-    fn inc_plugin_accepts_field() {
-        let mut plugin = Inc::new();
-
-        assert!(plugin
-            .begin_filter(CallStub::new().with_parameter("package.version").create())
-            .is_ok());
-
-        assert_eq!(
-            plugin
-                .field
-                .map(|f| f.iter().map(|f| f.unspanned.clone()).collect()),
-            Some(vec![
-                UnspannedPathMember::String("package".to_string()),
-                UnspannedPathMember::String("version".to_string())
-            ])
-        );
-    }
-
-    #[test]
-    fn incs_major() {
-        let mut inc = Inc::new();
-        inc.for_semver(SemVerAction::Major);
-        assert_eq!(inc.apply("0.1.3").unwrap(), UntaggedValue::string("1.0.0"));
-    }
-
-    #[test]
-    fn incs_minor() {
-        let mut inc = Inc::new();
-        inc.for_semver(SemVerAction::Minor);
-        assert_eq!(inc.apply("0.1.3").unwrap(), UntaggedValue::string("0.2.0"));
-    }
-
-    #[test]
-    fn incs_patch() {
-        let mut inc = Inc::new();
-        inc.for_semver(SemVerAction::Patch);
-        assert_eq!(inc.apply("0.1.3").unwrap(), UntaggedValue::string("0.1.4"));
-    }
-
-    #[test]
-    fn inc_plugin_applies_major() {
-        let mut plugin = Inc::new();
-
-        assert!(plugin
-            .begin_filter(
-                CallStub::new()
-                    .with_long_flag("major")
-                    .with_parameter("version")
-                    .create()
-            )
-            .is_ok());
-
-        let subject = cargo_sample_record("0.1.3");
-        let output = plugin.filter(subject).unwrap();
-
-        match output[0].as_ref().unwrap() {
-            ReturnSuccess::Value(Value {
-                value: UntaggedValue::Row(o),
-                ..
-            }) => assert_eq!(
-                *o.get_data(&String::from("version")).borrow(),
-                UntaggedValue::string(String::from("1.0.0")).into_untagged_value()
-            ),
-            _ => {}
-        }
-    }
-
-    #[test]
-    fn inc_plugin_applies_minor() {
-        let mut plugin = Inc::new();
-
-        assert!(plugin
-            .begin_filter(
-                CallStub::new()
-                    .with_long_flag("minor")
-                    .with_parameter("version")
-                    .create()
-            )
-            .is_ok());
-
-        let subject = cargo_sample_record("0.1.3");
-        let output = plugin.filter(subject).unwrap();
-
-        match output[0].as_ref().unwrap() {
-            ReturnSuccess::Value(Value {
-                value: UntaggedValue::Row(o),
-                ..
-            }) => assert_eq!(
-                *o.get_data(&String::from("version")).borrow(),
-                UntaggedValue::string(String::from("0.2.0")).into_untagged_value()
-            ),
-            _ => {}
-        }
-    }
-
-    #[test]
-    fn inc_plugin_applies_patch() {
-        let field = String::from("version");
-        let mut plugin = Inc::new();
-
-        assert!(plugin
-            .begin_filter(
-                CallStub::new()
-                    .with_long_flag("patch")
-                    .with_parameter(&field)
-                    .create()
-            )
-            .is_ok());
-
-        let subject = cargo_sample_record("0.1.3");
-        let output = plugin.filter(subject).unwrap();
-
-        match output[0].as_ref().unwrap() {
-            ReturnSuccess::Value(Value {
-                value: UntaggedValue::Row(o),
-                ..
-            }) => assert_eq!(
-                *o.get_data(&field).borrow(),
-                UntaggedValue::string(String::from("0.1.4")).into_untagged_value()
-            ),
-            _ => {}
-        }
-    }
+    serve_plugin(&mut Inc::new())
 }

crates/nu_plugin_inc/src/nu_plugin_inc/mod.rs

@@ -0,0 +1,73 @@
+#[cfg(test)]
+mod tests;
+
+use crate::inc::{Action, SemVerAction};
+use crate::Inc;
+use nu_errors::ShellError;
+use nu_plugin::Plugin;
+use nu_protocol::{
+    CallInfo, Primitive, ReturnSuccess, ReturnValue, ShellTypeName, Signature, SyntaxShape,
+    UntaggedValue, Value,
+};
+use nu_source::{HasSpan, SpannedItem};
+use nu_value_ext::ValueExt;
+
+impl Plugin for Inc {
+    fn config(&mut self) -> Result<Signature, ShellError> {
+        Ok(Signature::build("inc")
+            .desc("Increment a value or version. Optionally use the column of a table.")
+            .switch("major", "increment the major version (eg 1.2.1 -> 2.0.0)")
+            .switch("minor", "increment the minor version (eg 1.2.1 -> 1.3.0)")
+            .switch("patch", "increment the patch version (eg 1.2.1 -> 1.2.2)")
+            .rest(SyntaxShape::ColumnPath, "the column(s) to update")
+            .filter())
+    }
+
+    fn begin_filter(&mut self, call_info: CallInfo) -> Result<Vec<ReturnValue>, ShellError> {
+        if call_info.args.has("major") {
+            self.for_semver(SemVerAction::Major);
+        }
+        if call_info.args.has("minor") {
+            self.for_semver(SemVerAction::Minor);
+        }
+        if call_info.args.has("patch") {
+            self.for_semver(SemVerAction::Patch);
+        }
+
+        if let Some(args) = call_info.args.positional {
+            for arg in args {
+                match arg {
+                    table @ Value {
+                        value: UntaggedValue::Primitive(Primitive::ColumnPath(_)),
+                        ..
+                    } => {
+                        self.field = Some(table.as_column_path()?);
+                    }
+                    value => {
+                        return Err(ShellError::type_error(
+                            "table",
+                            value.type_name().spanned(value.span()),
+                        ))
+                    }
+                }
+            }
+        }
+
+        if self.action.is_none() {
+            self.action = Some(Action::Default);
+        }
+
+        match &self.error {
+            Some(reason) => Err(ShellError::untagged_runtime_error(format!(
+                "{}: {}",
+                reason,
+                Inc::usage()
+            ))),
+            None => Ok(vec![]),
+        }
+    }
+
+    fn filter(&mut self, input: Value) -> Result<Vec<ReturnValue>, ShellError> {
+        Ok(vec![ReturnSuccess::value(self.inc(input)?)])
+    }
+}

crates/nu_plugin_inc/src/nu_plugin_inc/tests.rs

@@ -0,0 +1,126 @@
+mod integration {
+    use crate::inc::{Action, SemVerAction};
+    use crate::Inc;
+    use nu_plugin::test_helpers::value::{column_path, string};
+    use nu_plugin::test_helpers::{plugin, CallStub};
+
+    #[test]
+    fn picks_up_one_action_flag_only() {
+        plugin(&mut Inc::new())
+            .args(
+                CallStub::new()
+                    .with_long_flag("major")
+                    .with_long_flag("minor")
+                    .create(),
+            )
+            .setup(|plugin, returned_values| {
+                let actual = format!("{}", returned_values.unwrap_err());
+
+                assert!(actual.contains("can only apply one"));
+                assert_eq!(plugin.error, Some("can only apply one".to_string()));
+            });
+    }
+
+    #[test]
+    fn picks_up_major_flag() {
+        plugin(&mut Inc::new())
+            .args(CallStub::new().with_long_flag("major").create())
+            .setup(|plugin, _| {
+                let sem_version_part = SemVerAction::Major;
+                plugin.expect_action(Action::SemVerAction(sem_version_part))
+            });
+    }
+
+    #[test]
+    fn picks_up_minor_flag() {
+        plugin(&mut Inc::new())
+            .args(CallStub::new().with_long_flag("minor").create())
+            .setup(|plugin, _| {
+                let sem_version_part = SemVerAction::Minor;
+                plugin.expect_action(Action::SemVerAction(sem_version_part))
+            });
+    }
+
+    #[test]
+    fn picks_up_patch_flag() {
+        plugin(&mut Inc::new())
+            .args(CallStub::new().with_long_flag("patch").create())
+            .setup(|plugin, _| {
+                let sem_version_part = SemVerAction::Patch;
+                plugin.expect_action(Action::SemVerAction(sem_version_part))
+            });
+    }
+
+    #[test]
+    fn picks_up_argument_for_field() {
+        plugin(&mut Inc::new())
+            .args(CallStub::new().with_parameter("package.version").create())
+            .setup(|plugin, _| {
+                plugin.expect_field(column_path(&vec![string("package"), string("version")]))
+            });
+    }
+
+    mod sem_ver {
+        use crate::Inc;
+        use nu_plugin::test_helpers::value::{get_data, string, structured_sample_record};
+        use nu_plugin::test_helpers::{expect_return_value_at, plugin, CallStub};
+
+        fn cargo_sample_record(with_version: &str) -> nu_protocol::Value {
+            structured_sample_record("version", with_version)
+        }
+
+        #[test]
+        fn major_input_using_the_field_passed_as_parameter() {
+            let run = plugin(&mut Inc::new())
+                .args(
+                    CallStub::new()
+                        .with_long_flag("major")
+                        .with_parameter("version")
+                        .create(),
+                )
+                .input(cargo_sample_record("0.1.3"))
+                .setup(|_, _| {})
+                .test();
+
+            let actual = expect_return_value_at(run, 0);
+
+            assert_eq!(get_data(actual, "version"), string("1.0.0"));
+        }
+
+        #[test]
+        fn minor_input_using_the_field_passed_as_parameter() {
+            let run = plugin(&mut Inc::new())
+                .args(
+                    CallStub::new()
+                        .with_long_flag("minor")
+                        .with_parameter("version")
+                        .create(),
+                )
+                .input(cargo_sample_record("0.1.3"))
+                .setup(|_, _| {})
+                .test();
+
+            let actual = expect_return_value_at(run, 0);
+
+            assert_eq!(get_data(actual, "version"), string("0.2.0"));
+        }
+
+        #[test]
+        fn patch_input_using_the_field_passed_as_parameter() {
+            let run = plugin(&mut Inc::new())
+                .args(
+                    CallStub::new()
+                        .with_long_flag("patch")
+                        .with_parameter("version")
+                        .create(),
+                )
+                .input(cargo_sample_record("0.1.3"))
+                .setup(|_, _| {})
+                .test();
+
+            let actual = expect_return_value_at(run, 0);
+
+            assert_eq!(get_data(actual, "version"), string("0.1.4"));
+        }
+    }
+}

crates/nu_plugin_match/Cargo.toml

@@ -6,8 +6,6 @@ edition = "2018"
 description = "A regex match plugin for Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 nu-plugin = { path = "../nu-plugin", version="0.7.0" }
 nu-protocol = { path = "../nu-protocol", version = "0.7.0" }

crates/nu_plugin_post/Cargo.toml

@@ -6,8 +6,6 @@ edition = "2018"
 description = "An HTTP post plugin for Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 nu-plugin = { path = "../nu-plugin", version="0.7.0" }
 nu-protocol = { path = "../nu-protocol", version = "0.7.0" }

crates/nu_plugin_ps/Cargo.toml

@@ -6,8 +6,6 @@ edition = "2018"
 description = "A process list plugin for Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 nu-plugin = { path = "../nu-plugin", version="0.7.0" }
 nu-protocol = { path = "../nu-protocol", version = "0.7.0" }

crates/nu_plugin_str/Cargo.toml

@@ -6,7 +6,8 @@ edition = "2018"
 description = "A string manipulation plugin for Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[lib]
+doctest = false
 
 [dependencies]
 nu-plugin = { path = "../nu-plugin", version="0.7.0" }
@@ -14,9 +15,7 @@ nu-protocol = { path = "../nu-protocol", version = "0.7.0" }
 nu-source = { path = "../nu-source", version = "0.7.0" }
 nu-errors = { path = "../nu-errors", version = "0.7.0" }
 nu-value-ext = { path = "../nu-value-ext", version = "0.7.0" }
-
 regex = "1"
-indexmap = "1.3.0"
 num-bigint = "0.2.3"
 
 [build-dependencies]

crates/nu_plugin_str/src/lib.rs

@@ -7,11 +7,8 @@ pub use strutils::Str;
 mod tests {
     use super::Str;
     use crate::strutils::Action;
-    use nu_errors::ShellError;
-    use nu_protocol::{Primitive, ReturnSuccess, TaggedDictBuilder, UntaggedValue, Value};
-    use nu_source::Tag;
+    use nu_protocol::Value;
     use nu_value_ext::ValueExt;
-    use num_bigint::BigInt;
 
     impl Str {
         pub fn expect_action(&self, action: Action) {
@@ -38,51 +35,4 @@ mod tests {
             }
         }
     }
-
-    pub fn get_data(for_value: Value, key: &str) -> Value {
-        for_value.get_data(&key.to_string()).borrow().clone()
-    }
-
-    pub fn expect_return_value_at(
-        for_results: Result<Vec<Result<ReturnSuccess, ShellError>>, ShellError>,
-        at: usize,
-    ) -> Value {
-        let return_values = for_results
-            .expect("Failed! This seems to be an error getting back the results from the plugin.");
-
-        for (idx, item) in return_values.iter().enumerate() {
-            let item = match item {
-                Ok(return_value) => return_value,
-                Err(reason) => panic!(format!("{}", reason)),
-            };
-
-            if idx == at {
-                return item.raw_value().unwrap();
-            }
-        }
-
-        panic!(format!(
-            "Couldn't get return value from stream at {}. (There are {} items)",
-            at,
-            return_values.len() - 1
-        ))
-    }
-
-    pub fn int(i: impl Into<BigInt>) -> Value {
-        UntaggedValue::Primitive(Primitive::Int(i.into())).into_untagged_value()
-    }
-
-    pub fn string(input: impl Into<String>) -> Value {
-        UntaggedValue::string(input.into()).into_untagged_value()
-    }
-
-    pub fn structured_sample_record(key: &str, value: &str) -> Value {
-        let mut record = TaggedDictBuilder::new(Tag::unknown());
-        record.insert_untagged(key.clone(), UntaggedValue::string(value));
-        record.into_value()
-    }
-
-    pub fn unstructured_sample_record(value: &str) -> Value {
-        UntaggedValue::string(value).into_value(Tag::unknown())
-    }
 }

crates/nu_plugin_str/src/nu_plugin_str/tests.rs

@@ -1,11 +1,11 @@
 mod integration {
     use crate::strutils::{Action, ReplaceAction};
-    use crate::tests::{
-        expect_return_value_at, get_data, int, string, structured_sample_record,
+    use crate::Str;
+    use nu_plugin::test_helpers::value::{
+        column_path, get_data, int, string, structured_sample_record, table,
         unstructured_sample_record,
     };
-    use crate::Str;
-    use nu_plugin::test_helpers::{column_path, plugin, table, CallStub};
+    use nu_plugin::test_helpers::{expect_return_value_at, plugin, CallStub};
     use nu_protocol::UntaggedValue;
 
     #[test]
@@ -24,6 +24,7 @@ mod integration {
                 assert_eq!(plugin.error, Some("can only apply one".to_string()));
             });
     }
+
     #[test]
     fn picks_up_downcase_flag() {
         plugin(&mut Str::new())

crates/nu_plugin_str/src/strutils.rs

@@ -2,7 +2,6 @@ use nu_errors::ShellError;
 use nu_protocol::{did_you_mean, ColumnPath, Primitive, ShellTypeName, UntaggedValue, Value};
 use nu_source::{span_for_spanned_list, Tagged};
 use nu_value_ext::ValueExt;
-
 use regex::Regex;
 use std::cmp;
 
@@ -206,42 +205,35 @@ impl Str {
 
 #[cfg(test)]
 pub mod tests {
-    use super::{ReplaceAction, Str};
-    use crate::tests::{int, string};
+    use super::ReplaceAction;
+    use super::Str;
+    use nu_plugin::test_helpers::value::{int, string};
 
     #[test]
     fn downcases() {
         let mut strutils = Str::new();
-
         strutils.for_downcase();
-
         assert_eq!(strutils.apply("ANDRES").unwrap(), string("andres").value);
     }
 
     #[test]
     fn upcases() {
         let mut strutils = Str::new();
-
         strutils.for_upcase();
-
         assert_eq!(strutils.apply("andres").unwrap(), string("ANDRES").value);
     }
 
     #[test]
     fn converts_to_int() {
         let mut strutils = Str::new();
-
         strutils.for_to_int();
-
         assert_eq!(strutils.apply("9999").unwrap(), int(9999 as i64).value);
     }
 
     #[test]
     fn replaces() {
         let mut strutils = Str::new();
-
         strutils.for_replace(ReplaceAction::Direct("robalino".to_string()));
-
         assert_eq!(strutils.apply("andres").unwrap(), string("robalino").value);
     }
 

crates/nu_plugin_sum/Cargo.toml

@@ -6,8 +6,6 @@ edition = "2018"
 description = "A simple summation plugin for Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 nu-plugin = { path = "../nu-plugin", version="0.7.0" }
 nu-protocol = { path = "../nu-protocol", version = "0.7.0" }

crates/nu_plugin_sys/Cargo.toml

@@ -6,8 +6,6 @@ edition = "2018"
 description = "A system info plugin for Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 nu-plugin = { path = "../nu-plugin", version="0.7.0" }
 nu-protocol = { path = "../nu-protocol", version = "0.7.0" }

crates/nu_plugin_textview/Cargo.toml

@@ -6,8 +6,6 @@ edition = "2018"
 description = "Text viewer plugin for Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 nu-plugin = { path = "../nu-plugin", version="0.7.0" }
 nu-protocol = { path = "../nu-protocol", version = "0.7.0" }

crates/nu_plugin_tree/Cargo.toml

@@ -6,8 +6,6 @@ edition = "2018"
 description = "Tree viewer plugin for Nushell"
 license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 nu-plugin = { path = "../nu-plugin", version="0.7.0" }
 nu-protocol = { path = "../nu-protocol", version = "0.7.0" }

src/plugins/nu_plugin_core_inc.rs

@@ -1,457 +1,6 @@
-use nu_errors::ShellError;
-use nu_plugin::{serve_plugin, Plugin};
-use nu_protocol::{
-    did_you_mean, CallInfo, ColumnPath, Primitive, ReturnSuccess, ReturnValue, ShellTypeName,
-    Signature, SyntaxShape, UntaggedValue, Value,
-};
-use nu_source::{span_for_spanned_list, HasSpan, SpannedItem, Tagged};
-use nu_value_ext::ValueExt;
-
-enum Action {
-    SemVerAction(SemVerAction),
-    Default,
-}
-
-pub enum SemVerAction {
-    Major,
-    Minor,
-    Patch,
-}
-
-struct Inc {
-    field: Option<Tagged<ColumnPath>>,
-    error: Option<String>,
-    action: Option<Action>,
-}
-
-impl Inc {
-    fn new() -> Inc {
-        Inc {
-            field: None,
-            error: None,
-            action: None,
-        }
-    }
-
-    fn apply(&self, input: &str) -> Result<UntaggedValue, ShellError> {
-        let applied = match &self.action {
-            Some(Action::SemVerAction(act_on)) => {
-                let mut ver = match semver::Version::parse(&input) {
-                    Ok(parsed_ver) => parsed_ver,
-                    Err(_) => return Ok(UntaggedValue::string(input.to_string())),
-                };
-
-                match act_on {
-                    SemVerAction::Major => ver.increment_major(),
-                    SemVerAction::Minor => ver.increment_minor(),
-                    SemVerAction::Patch => ver.increment_patch(),
-                }
-
-                UntaggedValue::string(ver.to_string())
-            }
-            Some(Action::Default) | None => match input.parse::<u64>() {
-                Ok(v) => UntaggedValue::string(format!("{}", v + 1)),
-                Err(_) => UntaggedValue::string(input),
-            },
-        };
-
-        Ok(applied)
-    }
-
-    fn for_semver(&mut self, part: SemVerAction) {
-        if self.permit() {
-            self.action = Some(Action::SemVerAction(part));
-        } else {
-            self.log_error("can only apply one");
-        }
-    }
-
-    fn permit(&mut self) -> bool {
-        self.action.is_none()
-    }
-
-    fn log_error(&mut self, message: &str) {
-        self.error = Some(message.to_string());
-    }
-
-    pub fn usage() -> &'static str {
-        "Usage: inc field [--major|--minor|--patch]"
-    }
-
-    fn inc(&self, value: Value) -> Result<Value, ShellError> {
-        match &value.value {
-            UntaggedValue::Primitive(Primitive::Int(i)) => {
-                Ok(UntaggedValue::int(i + 1).into_value(value.tag()))
-            }
-            UntaggedValue::Primitive(Primitive::Bytes(b)) => {
-                Ok(UntaggedValue::bytes(b + 1 as u64).into_value(value.tag()))
-            }
-            UntaggedValue::Primitive(Primitive::String(ref s)) => {
-                Ok(self.apply(&s)?.into_value(value.tag()))
-            }
-            UntaggedValue::Table(values) => {
-                if values.len() == 1 {
-                    Ok(UntaggedValue::Table(vec![self.inc(values[0].clone())?])
-                        .into_value(value.tag()))
-                } else {
-                    Err(ShellError::type_error(
-                        "incrementable value",
-                        value.type_name().spanned(value.span()),
-                    ))
-                }
-            }
-
-            UntaggedValue::Row(_) => match self.field {
-                Some(ref f) => {
-                    let fields = f.clone();
-
-                    let replace_for = value.get_data_by_column_path(
-                        &f,
-                        Box::new(move |(obj_source, column_path_tried, _)| {
-                            match did_you_mean(&obj_source, &column_path_tried) {
-                                Some(suggestions) => ShellError::labeled_error(
-                                    "Unknown column",
-                                    format!("did you mean '{}'?", suggestions[0].1),
-                                    span_for_spanned_list(fields.iter().map(|p| p.span)),
-                                ),
-                                None => ShellError::labeled_error(
-                                    "Unknown column",
-                                    "row does not contain this column",
-                                    span_for_spanned_list(fields.iter().map(|p| p.span)),
-                                ),
-                            }
-                        }),
-                    );
-
-                    let got = replace_for?;
-                    let replacement = self.inc(got.clone())?;
-
-                    match value.replace_data_at_column_path(
-                        &f,
-                        replacement.value.clone().into_untagged_value(),
-                    ) {
-                        Some(v) => Ok(v),
-                        None => Err(ShellError::labeled_error(
-                            "inc could not find field to replace",
-                            "column name",
-                            value.tag(),
-                        )),
-                    }
-                }
-                None => Err(ShellError::untagged_runtime_error(
-                    "inc needs a field when incrementing a column in a table",
-                )),
-            },
-            _ => Err(ShellError::type_error(
-                "incrementable value",
-                value.type_name().spanned(value.span()),
-            )),
-        }
-    }
-}
-
-impl Plugin for Inc {
-    fn config(&mut self) -> Result<Signature, ShellError> {
-        Ok(Signature::build("inc")
-            .desc("Increment a value or version. Optionally use the column of a table.")
-            .switch("major", "increment the major version (eg 1.2.1 -> 2.0.0)")
-            .switch("minor", "increment the minor version (eg 1.2.1 -> 1.3.0)")
-            .switch("patch", "increment the patch version (eg 1.2.1 -> 1.2.2)")
-            .rest(SyntaxShape::ColumnPath, "the column(s) to update")
-            .filter())
-    }
-
-    fn begin_filter(&mut self, call_info: CallInfo) -> Result<Vec<ReturnValue>, ShellError> {
-        if call_info.args.has("major") {
-            self.for_semver(SemVerAction::Major);
-        }
-        if call_info.args.has("minor") {
-            self.for_semver(SemVerAction::Minor);
-        }
-        if call_info.args.has("patch") {
-            self.for_semver(SemVerAction::Patch);
-        }
-
-        if let Some(args) = call_info.args.positional {
-            for arg in args {
-                match arg {
-                    table @ Value {
-                        value: UntaggedValue::Primitive(Primitive::ColumnPath(_)),
-                        ..
-                    } => {
-                        self.field = Some(table.as_column_path()?);
-                    }
-                    value => {
-                        return Err(ShellError::type_error(
-                            "table",
-                            value.type_name().spanned(value.span()),
-                        ))
-                    }
-                }
-            }
-        }
-
-        if self.action.is_none() {
-            self.action = Some(Action::Default);
-        }
-
-        match &self.error {
-            Some(reason) => Err(ShellError::untagged_runtime_error(format!(
-                "{}: {}",
-                reason,
-                Inc::usage()
-            ))),
-            None => Ok(vec![]),
-        }
-    }
-
-    fn filter(&mut self, input: Value) -> Result<Vec<ReturnValue>, ShellError> {
-        Ok(vec![ReturnSuccess::value(self.inc(input)?)])
-    }
-}
+use nu_plugin::serve_plugin;
+use nu_plugin_inc::Inc;
 
 fn main() {
     serve_plugin(&mut Inc::new());
 }
-
-#[cfg(test)]
-mod tests {
-
-    use super::{Inc, SemVerAction};
-    use indexmap::IndexMap;
-    use nu_plugin::Plugin;
-    use nu_protocol::{
-        CallInfo, EvaluatedArgs, PathMember, ReturnSuccess, TaggedDictBuilder, UnspannedPathMember,
-        UntaggedValue, Value,
-    };
-    use nu_source::{Span, Tag};
-
-    struct CallStub {
-        positionals: Vec<Value>,
-        flags: IndexMap<String, Value>,
-    }
-
-    impl CallStub {
-        fn new() -> CallStub {
-            CallStub {
-                positionals: vec![],
-                flags: indexmap::IndexMap::new(),
-            }
-        }
-
-        fn with_long_flag(&mut self, name: &str) -> &mut Self {
-            self.flags.insert(
-                name.to_string(),
-                UntaggedValue::boolean(true).into_value(Tag::unknown()),
-            );
-            self
-        }
-
-        fn with_parameter(&mut self, name: &str) -> &mut Self {
-            let fields: Vec<PathMember> = name
-                .split(".")
-                .map(|s| {
-                    UnspannedPathMember::String(s.to_string()).into_path_member(Span::unknown())
-                })
-                .collect();
-
-            self.positionals
-                .push(UntaggedValue::column_path(fields).into_untagged_value());
-            self
-        }
-
-        fn create(&self) -> CallInfo {
-            CallInfo {
-                args: EvaluatedArgs::new(Some(self.positionals.clone()), Some(self.flags.clone())),
-                name_tag: Tag::unknown(),
-            }
-        }
-    }
-
-    fn cargo_sample_record(with_version: &str) -> Value {
-        let mut package = TaggedDictBuilder::new(Tag::unknown());
-        package.insert_untagged("version", UntaggedValue::string(with_version));
-        package.into_value()
-    }
-
-    #[test]
-    fn inc_plugin_configuration_flags_wired() {
-        let mut plugin = Inc::new();
-
-        let configured = plugin.config().expect("Can not configure plugin");
-
-        for action_flag in &["major", "minor", "patch"] {
-            assert!(configured.named.get(*action_flag).is_some());
-        }
-    }
-
-    #[test]
-    fn inc_plugin_accepts_major() {
-        let mut plugin = Inc::new();
-
-        assert!(plugin
-            .begin_filter(CallStub::new().with_long_flag("major").create())
-            .is_ok());
-        assert!(plugin.action.is_some());
-    }
-
-    #[test]
-    fn inc_plugin_accepts_minor() {
-        let mut plugin = Inc::new();
-
-        assert!(plugin
-            .begin_filter(CallStub::new().with_long_flag("minor").create())
-            .is_ok());
-        assert!(plugin.action.is_some());
-    }
-
-    #[test]
-    fn inc_plugin_accepts_patch() {
-        let mut plugin = Inc::new();
-
-        assert!(plugin
-            .begin_filter(CallStub::new().with_long_flag("patch").create())
-            .is_ok());
-        assert!(plugin.action.is_some());
-    }
-
-    #[test]
-    fn inc_plugin_accepts_only_one_action() {
-        let mut plugin = Inc::new();
-
-        assert!(plugin
-            .begin_filter(
-                CallStub::new()
-                    .with_long_flag("major")
-                    .with_long_flag("minor")
-                    .create(),
-            )
-            .is_err());
-        assert_eq!(plugin.error, Some("can only apply one".to_string()));
-    }
-
-    #[test]
-    fn inc_plugin_accepts_field() {
-        let mut plugin = Inc::new();
-
-        assert!(plugin
-            .begin_filter(CallStub::new().with_parameter("package.version").create())
-            .is_ok());
-
-        assert_eq!(
-            plugin
-                .field
-                .map(|f| f.iter().map(|f| f.unspanned.clone()).collect()),
-            Some(vec![
-                UnspannedPathMember::String("package".to_string()),
-                UnspannedPathMember::String("version".to_string())
-            ])
-        );
-    }
-
-    #[test]
-    fn incs_major() {
-        let mut inc = Inc::new();
-        inc.for_semver(SemVerAction::Major);
-        assert_eq!(inc.apply("0.1.3").unwrap(), UntaggedValue::string("1.0.0"));
-    }
-
-    #[test]
-    fn incs_minor() {
-        let mut inc = Inc::new();
-        inc.for_semver(SemVerAction::Minor);
-        assert_eq!(inc.apply("0.1.3").unwrap(), UntaggedValue::string("0.2.0"));
-    }
-
-    #[test]
-    fn incs_patch() {
-        let mut inc = Inc::new();
-        inc.for_semver(SemVerAction::Patch);
-        assert_eq!(inc.apply("0.1.3").unwrap(), UntaggedValue::string("0.1.4"));
-    }
-
-    #[test]
-    fn inc_plugin_applies_major() {
-        let mut plugin = Inc::new();
-
-        assert!(plugin
-            .begin_filter(
-                CallStub::new()
-                    .with_long_flag("major")
-                    .with_parameter("version")
-                    .create()
-            )
-            .is_ok());
-
-        let subject = cargo_sample_record("0.1.3");
-        let output = plugin.filter(subject).unwrap();
-
-        match output[0].as_ref().unwrap() {
-            ReturnSuccess::Value(Value {
-                value: UntaggedValue::Row(o),
-                ..
-            }) => assert_eq!(
-                *o.get_data(&String::from("version")).borrow(),
-                UntaggedValue::string(String::from("1.0.0")).into_untagged_value()
-            ),
-            _ => {}
-        }
-    }
-
-    #[test]
-    fn inc_plugin_applies_minor() {
-        let mut plugin = Inc::new();
-
-        assert!(plugin
-            .begin_filter(
-                CallStub::new()
-                    .with_long_flag("minor")
-                    .with_parameter("version")
-                    .create()
-            )
-            .is_ok());
-
-        let subject = cargo_sample_record("0.1.3");
-        let output = plugin.filter(subject).unwrap();
-
-        match output[0].as_ref().unwrap() {
-            ReturnSuccess::Value(Value {
-                value: UntaggedValue::Row(o),
-                ..
-            }) => assert_eq!(
-                *o.get_data(&String::from("version")).borrow(),
-                UntaggedValue::string(String::from("0.2.0")).into_untagged_value()
-            ),
-            _ => {}
-        }
-    }
-
-    #[test]
-    fn inc_plugin_applies_patch() {
-        let field = String::from("version");
-        let mut plugin = Inc::new();
-
-        assert!(plugin
-            .begin_filter(
-                CallStub::new()
-                    .with_long_flag("patch")
-                    .with_parameter(&field)
-                    .create()
-            )
-            .is_ok());
-
-        let subject = cargo_sample_record("0.1.3");
-        let output = plugin.filter(subject).unwrap();
-
-        match output[0].as_ref().unwrap() {
-            ReturnSuccess::Value(Value {
-                value: UntaggedValue::Row(o),
-                ..
-            }) => assert_eq!(
-                *o.get_data(&field).borrow(),
-                UntaggedValue::string(String::from("0.1.4")).into_untagged_value()
-            ),
-            _ => {}
-        }
-    }
-}

src/plugins/nu_plugin_core_str.rs

@@ -1,5 +1,6 @@
 use nu_plugin::serve_plugin;
 use nu_plugin_str::Str;
+
 fn main() {
     serve_plugin(&mut Str::new());
 }