mirror of
https://github.com/nushell/nushell
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91d44f15c1
# Description This allows plugins to report their version (and potentially other metadata in the future). The version is shown in `plugin list` and in `version`. The metadata is stored in the registry file, and reflects whatever was retrieved on `plugin add`, not necessarily the running binary. This can help you to diagnose if there's some kind of mismatch with what you expect. We could potentially use this functionality to show a warning or error if a plugin being run does not have the same version as what was in the cache file, suggesting `plugin add` be run again, but I haven't done that at this point. It is optional, and it requires the plugin author to make some code changes if they want to provide it, since I can't automatically determine the version of the calling crate or anything tricky like that to do it. Example: ``` > plugin list | select name version is_running pid ╭───┬────────────────┬─────────┬────────────┬─────╮ │ # │ name │ version │ is_running │ pid │ ├───┼────────────────┼─────────┼────────────┼─────┤ │ 0 │ example │ 0.93.1 │ false │ │ │ 1 │ gstat │ 0.93.1 │ false │ │ │ 2 │ inc │ 0.93.1 │ false │ │ │ 3 │ python_example │ 0.1.0 │ false │ │ ╰───┴────────────────┴─────────┴────────────┴─────╯ ``` cc @maxim-uvarov (he asked for it) # User-Facing Changes - `plugin list` gets a `version` column - `version` shows plugin versions when available - plugin authors *should* add `fn metadata()` to their `impl Plugin`, but don't have to # Tests + Formatting Tested the low level stuff and also the `plugin list` column. # After Submitting - [ ] update plugin guide docs - [ ] update plugin protocol docs (`Metadata` call & response) - [ ] update plugin template (`fn metadata()` should be easy) - [ ] release notes
110 lines
3.1 KiB
Rust
110 lines
3.1 KiB
Rust
//! Test support for [Nushell](https://nushell.sh) plugins.
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//!
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//! # Example
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//!
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//! ```rust
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//! use std::sync::Arc;
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//!
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//! use nu_plugin::*;
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//! use nu_plugin_test_support::PluginTest;
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//! use nu_protocol::{
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//! Example, IntoInterruptiblePipelineData, LabeledError, PipelineData, ShellError, Signature,
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//! Span, Type, Value,
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//! };
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//!
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//! struct LowercasePlugin;
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//! struct Lowercase;
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//!
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//! impl PluginCommand for Lowercase {
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//! type Plugin = LowercasePlugin;
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//!
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//! fn name(&self) -> &str {
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//! "lowercase"
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//! }
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//!
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//! fn usage(&self) -> &str {
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//! "Convert each string in a stream to lowercase"
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//! }
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//!
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//! fn signature(&self) -> Signature {
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//! Signature::build(self.name()).input_output_type(
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//! Type::List(Type::String.into()),
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//! Type::List(Type::String.into()),
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//! )
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//! }
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//!
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//! fn examples(&self) -> Vec<Example> {
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//! vec![Example {
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//! example: r#"[Hello wORLD] | lowercase"#,
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//! description: "Lowercase a list of strings",
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//! result: Some(Value::test_list(vec![
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//! Value::test_string("hello"),
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//! Value::test_string("world"),
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//! ])),
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//! }]
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//! }
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//!
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//! fn run(
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//! &self,
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//! _plugin: &LowercasePlugin,
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//! _engine: &EngineInterface,
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//! call: &EvaluatedCall,
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//! input: PipelineData,
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//! ) -> Result<PipelineData, LabeledError> {
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//! let span = call.head;
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//! Ok(input.map(
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//! move |value| {
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//! value
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//! .as_str()
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//! .map(|string| Value::string(string.to_lowercase(), span))
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//! // Errors in a stream should be returned as values.
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//! .unwrap_or_else(|err| Value::error(err, span))
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//! },
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//! None,
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//! )?)
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//! }
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//! }
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//!
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//! impl Plugin for LowercasePlugin {
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//! fn version(&self) -> String {
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//! env!("CARGO_PKG_VERSION").into()
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//! }
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//!
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//! fn commands(&self) -> Vec<Box<dyn PluginCommand<Plugin=Self>>> {
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//! vec![Box::new(Lowercase)]
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//! }
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//! }
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//!
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//! // #[test]
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//! fn test_examples() -> Result<(), ShellError> {
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//! PluginTest::new("lowercase", LowercasePlugin.into())?
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//! .test_command_examples(&Lowercase)
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//! }
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//!
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//! // #[test]
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//! fn test_lowercase() -> Result<(), ShellError> {
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//! let input = vec![Value::test_string("FooBar")].into_pipeline_data(Span::test_data(), None);
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//! let output = PluginTest::new("lowercase", LowercasePlugin.into())?
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//! .eval_with("lowercase", input)?
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//! .into_value(Span::test_data())?;
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//!
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//! assert_eq!(
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//! Value::test_list(vec![
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//! Value::test_string("foobar")
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//! ]),
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//! output
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//! );
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//! Ok(())
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//! }
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//! #
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//! # test_examples().unwrap();
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//! # test_lowercase().unwrap();
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//! ```
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mod diff;
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mod fake_persistent_plugin;
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mod fake_register;
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mod plugin_test;
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mod spawn_fake_plugin;
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pub use plugin_test::PluginTest;
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