nushell/tests/repl/test_table_operations.rs

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use crate::repl::tests::{fail_test, run_test, TestResult};
Disallow duplicated columns in table literals (#10875) # Description Pretty much all operations/commands in Nushell assume that the column names/keys in a record and thus also in a table (which consists of a list of records) are unique. Access through a string-like cell path should refer to a single column or key/value pair and our output through `table` will only show the last mention of a repeated column name. ```nu [[a a]; [1 2]] ╭─#─┬─a─╮ │ 0 │ 2 │ ╰───┴───╯ ``` While the record parsing already either errors with the `ShellError::ColumnDefinedTwice` or silently overwrites the first occurence with the second occurence, the table literal syntax `[[header columns]; [val1 val2]]` currently still allowed the creation of tables (and internally records with more than one entry with the same name. This is not only confusing, but also breaks some assumptions around how we can efficiently perform operations or in the past lead to outright bugs (e.g. #8431 fixed by #8446). This PR proposes to make this an error. After this change another hole which allowed the construction of records with non-unique column names will be plugged. ## Parts - Fix `SE::ColumnDefinedTwice` error code - Remove previous tests permitting duplicate columns - Deny duplicate column in table literal eval - Deny duplicate column in const eval - Deny duplicate column in `from nuon` # User-Facing Changes `[[a a]; [1 2]]` will now return an error: ``` Error: nu::shell::column_defined_twice × Record field or table column used twice ╭─[entry #2:1:1] 1 │ [[a a]; [1 2]] · ┬ ┬ · │ ╰── field redefined here · ╰── field first defined here ╰──── ``` this may under rare circumstances block code from evaluating. Furthermore this makes some NUON files invalid if they previously contained tables with repeated column names. # Tests + Formatting Added tests for each of the different evaluation paths that materialize tables.
2023-11-01 20:25:35 +00:00
#[test]
fn illegal_column_duplication() -> TestResult {
fail_test("[[lang, lang]; [nu, 100]]", "column_defined_twice")
}
#[test]
fn cell_path_subexpr1() -> TestResult {
run_test("([[lang, gems]; [nu, 100]]).lang | get 0", "nu")
}
#[test]
fn cell_path_subexpr2() -> TestResult {
run_test("([[lang, gems]; [nu, 100]]).lang.0", "nu")
}
#[test]
fn cell_path_var1() -> TestResult {
run_test("let x = [[lang, gems]; [nu, 100]]; $x.lang | get 0", "nu")
}
#[test]
fn cell_path_var2() -> TestResult {
run_test("let x = [[lang, gems]; [nu, 100]]; $x.lang.0", "nu")
}
#[test]
fn flatten_simple_list() -> TestResult {
run_test(
"[[N, u, s, h, e, l, l]] | flatten | str join (char nl)",
"N\nu\ns\nh\ne\nl\nl",
)
}
#[test]
fn flatten_get_simple_list() -> TestResult {
run_test("[[N, u, s, h, e, l, l]] | flatten | get 0", "N")
}
#[test]
fn flatten_table_get() -> TestResult {
run_test(
"[[origin, people]; [Ecuador, ([[name, meal]; ['Andres', 'arepa']])]] | flatten --all | get meal.0",
"arepa",
)
}
#[test]
fn flatten_table_column_get_last() -> TestResult {
run_test(
"[[origin, crate, versions]; [World, ([[name]; ['nu-cli']]), ['0.21', '0.22']]] | flatten versions --all | last | get versions",
"0.22",
)
}
#[test]
fn flatten_should_just_flatten_one_level() -> TestResult {
run_test(
"[[origin, crate, versions]; [World, ([[name]; ['nu-cli']]), ['0.21', '0.22']]] | flatten crate | get crate.name.0",
"nu-cli"
)
}
#[test]
fn flatten_nest_table_when_all_provided() -> TestResult {
run_test(
"[[origin, crate, versions]; [World, ([[name]; ['nu-cli']]), ['0.21', '0.22']]] | flatten crate --all | get name.0",
"nu-cli"
)
}
#[test]
fn get_table_columns_1() -> TestResult {
run_test(
"[[name, age, grade]; [paul,21,a]] | columns | first",
"name",
)
}
#[test]
fn get_table_columns_2() -> TestResult {
run_test("[[name, age, grade]; [paul,21,a]] | columns | get 1", "age")
}
#[test]
fn flatten_should_flatten_inner_table() -> TestResult {
run_test(
"[[[name, value]; [abc, 123]]] | flatten --all | get value.0",
"123",
)
}
#[test]
fn command_filter_reject_1() -> TestResult {
run_test(
"[[lang, gems]; [nu, 100]] | reject gems | to json",
r#"[
{
"lang": "nu"
}
]"#,
)
}
#[test]
fn command_filter_reject_2() -> TestResult {
run_test(
"[[lang, gems, grade]; [nu, 100, a]] | reject gems grade | to json",
r#"[
{
"lang": "nu"
}
]"#,
)
}
#[test]
fn command_filter_reject_3() -> TestResult {
run_test(
"[[lang, gems, grade]; [nu, 100, a]] | reject grade gems | to json",
r#"[
{
"lang": "nu"
}
]"#,
)
}
#[test]
#[rustfmt::skip]
fn command_filter_reject_4() -> TestResult {
run_test(
"[[lang, gems, grade]; [nu, 100, a]] | reject gems | to json -r",
r#"[{"lang":"nu","grade":"a"}]"#,
)
}
#[test]
fn command_drop_column_1() -> TestResult {
run_test(
"[[lang, gems, grade]; [nu, 100, a]] | drop column 2 | to json",
r#"[
{
"lang": "nu"
}
]"#,
)
}
#[test]
fn record_1() -> TestResult {
run_test(r#"{'a': 'b'} | get a"#, "b")
}
#[test]
fn record_2() -> TestResult {
run_test(r#"{'b': 'c'}.b"#, "c")
}
#[test]
fn where_on_ranges() -> TestResult {
run_test(r#"1..10 | where $it > 8 | math sum"#, "19")
}
#[test]
fn index_on_list() -> TestResult {
run_test(r#"[1, 2, 3].1"#, "2")
}
#[test]
fn update_cell_path_1() -> TestResult {
run_test(
r#"[[name, size]; [a, 1.1]] | into int size | get size.0"#,
"1",
)
}
#[test]
Make `get` hole errors and cell path hole errors identical (improvement on #7002) (#7647) # Description This closes #7498, as well as fixes an issue reported in https://github.com/nushell/nushell/pull/7002#issuecomment-1368340773 BEFORE: ``` 〉[{foo: 'bar'} {}] | get foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #5:1:1] 1 │ [{foo: 'bar'} {}] | get foo · ────────┬──────── ─┬─ · │ ╰── value originates here · ╰── cannot find column 'Empty cell' ╰──── 〉[{foo: 'bar'} {}].foo ╭───┬─────╮ │ 0 │ bar │ │ 1 │ │ ╰───┴─────╯ ``` AFTER: ``` 〉[{foo: 'bar'} {}] | get foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #1:1:1] 1 │ [{foo: 'bar'} {}] | get foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── 〉[{foo: 'bar'} {}].foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #3:1:1] 1 │ [{foo: 'bar'} {}].foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── ``` EDIT: This also changes the semantics of `get`/`select` `-i` somewhat. I've decided to leave it like this because it works more intuitively with `default` and `compact`. BEFORE: ``` 〉[{a:1} {b:2} {a:3}] | select -i foo | to nuon null ``` AFTER: ``` 〉[{a:1} {b:2} {a:3}] | select -i foo | to nuon [[foo]; [null], [null], [null]] ``` # User-Facing Changes See above. EDIT: the issue with holes in cases like ` [{foo: 'bar'} {}].foo.0` versus ` [{foo: 'bar'} {}].0.foo` has been resolved. # Tests + Formatting Don't forget to add tests that cover your changes. Make sure you've run and fixed any issues with these commands: - `cargo fmt --all -- --check` to check standard code formatting (`cargo fmt --all` applies these changes) - `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A clippy::needless_collect` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass # After Submitting If your PR had any user-facing changes, update [the documentation](https://github.com/nushell/nushell.github.io) after the PR is merged, if necessary. This will help us keep the docs up to date.
2023-01-02 22:45:43 +00:00
fn missing_column_errors() -> TestResult {
fail_test(
r#"[ { name: ABC, size: 20 }, { name: HIJ } ].size.1 == null"#,
Make `get` hole errors and cell path hole errors identical (improvement on #7002) (#7647) # Description This closes #7498, as well as fixes an issue reported in https://github.com/nushell/nushell/pull/7002#issuecomment-1368340773 BEFORE: ``` 〉[{foo: 'bar'} {}] | get foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #5:1:1] 1 │ [{foo: 'bar'} {}] | get foo · ────────┬──────── ─┬─ · │ ╰── value originates here · ╰── cannot find column 'Empty cell' ╰──── 〉[{foo: 'bar'} {}].foo ╭───┬─────╮ │ 0 │ bar │ │ 1 │ │ ╰───┴─────╯ ``` AFTER: ``` 〉[{foo: 'bar'} {}] | get foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #1:1:1] 1 │ [{foo: 'bar'} {}] | get foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── 〉[{foo: 'bar'} {}].foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #3:1:1] 1 │ [{foo: 'bar'} {}].foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── ``` EDIT: This also changes the semantics of `get`/`select` `-i` somewhat. I've decided to leave it like this because it works more intuitively with `default` and `compact`. BEFORE: ``` 〉[{a:1} {b:2} {a:3}] | select -i foo | to nuon null ``` AFTER: ``` 〉[{a:1} {b:2} {a:3}] | select -i foo | to nuon [[foo]; [null], [null], [null]] ``` # User-Facing Changes See above. EDIT: the issue with holes in cases like ` [{foo: 'bar'} {}].foo.0` versus ` [{foo: 'bar'} {}].0.foo` has been resolved. # Tests + Formatting Don't forget to add tests that cover your changes. Make sure you've run and fixed any issues with these commands: - `cargo fmt --all -- --check` to check standard code formatting (`cargo fmt --all` applies these changes) - `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A clippy::needless_collect` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass # After Submitting If your PR had any user-facing changes, update [the documentation](https://github.com/nushell/nushell.github.io) after the PR is merged, if necessary. This will help us keep the docs up to date.
2023-01-02 22:45:43 +00:00
"cannot find column",
)
}
Optional members in cell paths: Attempt 2 (#8379) This is a follow up from https://github.com/nushell/nushell/pull/7540. Please provide feedback if you have the time! ## Summary This PR lets you use `?` to indicate that a member in a cell path is optional and Nushell should return `null` if that member cannot be accessed. Unlike the previous PR, `?` is now a _postfix_ modifier for cell path members. A cell path of `.foo?.bar` means that `foo` is optional and `bar` is not. `?` does _not_ suppress all errors; it is intended to help in situations where data has "holes", i.e. the data types are correct but something is missing. Type mismatches (like trying to do a string path access on a date) will still fail. ### Record Examples ```bash { foo: 123 }.foo # returns 123 { foo: 123 }.bar # errors { foo: 123 }.bar? # returns null { foo: 123 } | get bar # errors { foo: 123 } | get bar? # returns null { foo: 123 }.bar.baz # errors { foo: 123 }.bar?.baz # errors because `baz` is not present on the result from `bar?` { foo: 123 }.bar.baz? # errors { foo: 123 }.bar?.baz? # returns null ``` ### List Examples ``` 〉[{foo: 1} {foo: 2} {}].foo Error: nu::shell::column_not_found × Cannot find column ╭─[entry #30:1:1] 1 │ [{foo: 1} {foo: 2} {}].foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── 〉[{foo: 1} {foo: 2} {}].foo? ╭───┬───╮ │ 0 │ 1 │ │ 1 │ 2 │ │ 2 │ │ ╰───┴───╯ 〉[{foo: 1} {foo: 2} {}].foo?.2 | describe nothing 〉[a b c].4? | describe nothing 〉[{foo: 1} {foo: 2} {}] | where foo? == 1 ╭───┬─────╮ │ # │ foo │ ├───┼─────┤ │ 0 │ 1 │ ╰───┴─────╯ ``` # Breaking changes 1. Column names with `?` in them now need to be quoted. 2. The `-i`/`--ignore-errors` flag has been removed from `get` and `select` 1. After this PR, most `get` error handling can be done with `?` and/or `try`/`catch`. 4. Cell path accesses like this no longer work without a `?`: ```bash 〉[{a:1 b:2} {a:3}].b.0 2 ``` We had some clever code that was able to recognize that since we only want row `0`, it's OK if other rows are missing column `b`. I removed that because it's tricky to maintain, and now that query needs to be written like: ```bash 〉[{a:1 b:2} {a:3}].b?.0 2 ``` I think the regression is acceptable for now. I plan to do more work in the future to enable streaming of cell path accesses, and when that happens I'll be able to make `.b.0` work again.
2023-03-16 03:50:58 +00:00
#[test]
fn missing_optional_column_fills_in_nothing() -> TestResult {
// The empty value will be replaced with null because of the ?
Optional members in cell paths: Attempt 2 (#8379) This is a follow up from https://github.com/nushell/nushell/pull/7540. Please provide feedback if you have the time! ## Summary This PR lets you use `?` to indicate that a member in a cell path is optional and Nushell should return `null` if that member cannot be accessed. Unlike the previous PR, `?` is now a _postfix_ modifier for cell path members. A cell path of `.foo?.bar` means that `foo` is optional and `bar` is not. `?` does _not_ suppress all errors; it is intended to help in situations where data has "holes", i.e. the data types are correct but something is missing. Type mismatches (like trying to do a string path access on a date) will still fail. ### Record Examples ```bash { foo: 123 }.foo # returns 123 { foo: 123 }.bar # errors { foo: 123 }.bar? # returns null { foo: 123 } | get bar # errors { foo: 123 } | get bar? # returns null { foo: 123 }.bar.baz # errors { foo: 123 }.bar?.baz # errors because `baz` is not present on the result from `bar?` { foo: 123 }.bar.baz? # errors { foo: 123 }.bar?.baz? # returns null ``` ### List Examples ``` 〉[{foo: 1} {foo: 2} {}].foo Error: nu::shell::column_not_found × Cannot find column ╭─[entry #30:1:1] 1 │ [{foo: 1} {foo: 2} {}].foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── 〉[{foo: 1} {foo: 2} {}].foo? ╭───┬───╮ │ 0 │ 1 │ │ 1 │ 2 │ │ 2 │ │ ╰───┴───╯ 〉[{foo: 1} {foo: 2} {}].foo?.2 | describe nothing 〉[a b c].4? | describe nothing 〉[{foo: 1} {foo: 2} {}] | where foo? == 1 ╭───┬─────╮ │ # │ foo │ ├───┼─────┤ │ 0 │ 1 │ ╰───┴─────╯ ``` # Breaking changes 1. Column names with `?` in them now need to be quoted. 2. The `-i`/`--ignore-errors` flag has been removed from `get` and `select` 1. After this PR, most `get` error handling can be done with `?` and/or `try`/`catch`. 4. Cell path accesses like this no longer work without a `?`: ```bash 〉[{a:1 b:2} {a:3}].b.0 2 ``` We had some clever code that was able to recognize that since we only want row `0`, it's OK if other rows are missing column `b`. I removed that because it's tricky to maintain, and now that query needs to be written like: ```bash 〉[{a:1 b:2} {a:3}].b?.0 2 ``` I think the regression is acceptable for now. I plan to do more work in the future to enable streaming of cell path accesses, and when that happens I'll be able to make `.b.0` work again.
2023-03-16 03:50:58 +00:00
run_test(
r#"[ { name: ABC, size: 20 }, { name: HIJ } ].size?.1 == null"#,
Optional members in cell paths: Attempt 2 (#8379) This is a follow up from https://github.com/nushell/nushell/pull/7540. Please provide feedback if you have the time! ## Summary This PR lets you use `?` to indicate that a member in a cell path is optional and Nushell should return `null` if that member cannot be accessed. Unlike the previous PR, `?` is now a _postfix_ modifier for cell path members. A cell path of `.foo?.bar` means that `foo` is optional and `bar` is not. `?` does _not_ suppress all errors; it is intended to help in situations where data has "holes", i.e. the data types are correct but something is missing. Type mismatches (like trying to do a string path access on a date) will still fail. ### Record Examples ```bash { foo: 123 }.foo # returns 123 { foo: 123 }.bar # errors { foo: 123 }.bar? # returns null { foo: 123 } | get bar # errors { foo: 123 } | get bar? # returns null { foo: 123 }.bar.baz # errors { foo: 123 }.bar?.baz # errors because `baz` is not present on the result from `bar?` { foo: 123 }.bar.baz? # errors { foo: 123 }.bar?.baz? # returns null ``` ### List Examples ``` 〉[{foo: 1} {foo: 2} {}].foo Error: nu::shell::column_not_found × Cannot find column ╭─[entry #30:1:1] 1 │ [{foo: 1} {foo: 2} {}].foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── 〉[{foo: 1} {foo: 2} {}].foo? ╭───┬───╮ │ 0 │ 1 │ │ 1 │ 2 │ │ 2 │ │ ╰───┴───╯ 〉[{foo: 1} {foo: 2} {}].foo?.2 | describe nothing 〉[a b c].4? | describe nothing 〉[{foo: 1} {foo: 2} {}] | where foo? == 1 ╭───┬─────╮ │ # │ foo │ ├───┼─────┤ │ 0 │ 1 │ ╰───┴─────╯ ``` # Breaking changes 1. Column names with `?` in them now need to be quoted. 2. The `-i`/`--ignore-errors` flag has been removed from `get` and `select` 1. After this PR, most `get` error handling can be done with `?` and/or `try`/`catch`. 4. Cell path accesses like this no longer work without a `?`: ```bash 〉[{a:1 b:2} {a:3}].b.0 2 ``` We had some clever code that was able to recognize that since we only want row `0`, it's OK if other rows are missing column `b`. I removed that because it's tricky to maintain, and now that query needs to be written like: ```bash 〉[{a:1 b:2} {a:3}].b?.0 2 ``` I think the regression is acceptable for now. I plan to do more work in the future to enable streaming of cell path accesses, and when that happens I'll be able to make `.b.0` work again.
2023-03-16 03:50:58 +00:00
"true",
)
}
#[test]
fn missing_required_row_fails() -> TestResult {
// .3 will fail if there is no 3rd row
fail_test(
r#"[ { name: ABC, size: 20 }, { name: HIJ } ].3"#,
"", // we just care if it errors
)
}
#[test]
fn missing_optional_row_fills_in_nothing() -> TestResult {
// ?.3 will return null if there is no 3rd row
Optional members in cell paths: Attempt 2 (#8379) This is a follow up from https://github.com/nushell/nushell/pull/7540. Please provide feedback if you have the time! ## Summary This PR lets you use `?` to indicate that a member in a cell path is optional and Nushell should return `null` if that member cannot be accessed. Unlike the previous PR, `?` is now a _postfix_ modifier for cell path members. A cell path of `.foo?.bar` means that `foo` is optional and `bar` is not. `?` does _not_ suppress all errors; it is intended to help in situations where data has "holes", i.e. the data types are correct but something is missing. Type mismatches (like trying to do a string path access on a date) will still fail. ### Record Examples ```bash { foo: 123 }.foo # returns 123 { foo: 123 }.bar # errors { foo: 123 }.bar? # returns null { foo: 123 } | get bar # errors { foo: 123 } | get bar? # returns null { foo: 123 }.bar.baz # errors { foo: 123 }.bar?.baz # errors because `baz` is not present on the result from `bar?` { foo: 123 }.bar.baz? # errors { foo: 123 }.bar?.baz? # returns null ``` ### List Examples ``` 〉[{foo: 1} {foo: 2} {}].foo Error: nu::shell::column_not_found × Cannot find column ╭─[entry #30:1:1] 1 │ [{foo: 1} {foo: 2} {}].foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── 〉[{foo: 1} {foo: 2} {}].foo? ╭───┬───╮ │ 0 │ 1 │ │ 1 │ 2 │ │ 2 │ │ ╰───┴───╯ 〉[{foo: 1} {foo: 2} {}].foo?.2 | describe nothing 〉[a b c].4? | describe nothing 〉[{foo: 1} {foo: 2} {}] | where foo? == 1 ╭───┬─────╮ │ # │ foo │ ├───┼─────┤ │ 0 │ 1 │ ╰───┴─────╯ ``` # Breaking changes 1. Column names with `?` in them now need to be quoted. 2. The `-i`/`--ignore-errors` flag has been removed from `get` and `select` 1. After this PR, most `get` error handling can be done with `?` and/or `try`/`catch`. 4. Cell path accesses like this no longer work without a `?`: ```bash 〉[{a:1 b:2} {a:3}].b.0 2 ``` We had some clever code that was able to recognize that since we only want row `0`, it's OK if other rows are missing column `b`. I removed that because it's tricky to maintain, and now that query needs to be written like: ```bash 〉[{a:1 b:2} {a:3}].b?.0 2 ``` I think the regression is acceptable for now. I plan to do more work in the future to enable streaming of cell path accesses, and when that happens I'll be able to make `.b.0` work again.
2023-03-16 03:50:58 +00:00
run_test(
r#"[ { name: ABC, size: 20 }, { name: HIJ } ].3? == null"#,
Optional members in cell paths: Attempt 2 (#8379) This is a follow up from https://github.com/nushell/nushell/pull/7540. Please provide feedback if you have the time! ## Summary This PR lets you use `?` to indicate that a member in a cell path is optional and Nushell should return `null` if that member cannot be accessed. Unlike the previous PR, `?` is now a _postfix_ modifier for cell path members. A cell path of `.foo?.bar` means that `foo` is optional and `bar` is not. `?` does _not_ suppress all errors; it is intended to help in situations where data has "holes", i.e. the data types are correct but something is missing. Type mismatches (like trying to do a string path access on a date) will still fail. ### Record Examples ```bash { foo: 123 }.foo # returns 123 { foo: 123 }.bar # errors { foo: 123 }.bar? # returns null { foo: 123 } | get bar # errors { foo: 123 } | get bar? # returns null { foo: 123 }.bar.baz # errors { foo: 123 }.bar?.baz # errors because `baz` is not present on the result from `bar?` { foo: 123 }.bar.baz? # errors { foo: 123 }.bar?.baz? # returns null ``` ### List Examples ``` 〉[{foo: 1} {foo: 2} {}].foo Error: nu::shell::column_not_found × Cannot find column ╭─[entry #30:1:1] 1 │ [{foo: 1} {foo: 2} {}].foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── 〉[{foo: 1} {foo: 2} {}].foo? ╭───┬───╮ │ 0 │ 1 │ │ 1 │ 2 │ │ 2 │ │ ╰───┴───╯ 〉[{foo: 1} {foo: 2} {}].foo?.2 | describe nothing 〉[a b c].4? | describe nothing 〉[{foo: 1} {foo: 2} {}] | where foo? == 1 ╭───┬─────╮ │ # │ foo │ ├───┼─────┤ │ 0 │ 1 │ ╰───┴─────╯ ``` # Breaking changes 1. Column names with `?` in them now need to be quoted. 2. The `-i`/`--ignore-errors` flag has been removed from `get` and `select` 1. After this PR, most `get` error handling can be done with `?` and/or `try`/`catch`. 4. Cell path accesses like this no longer work without a `?`: ```bash 〉[{a:1 b:2} {a:3}].b.0 2 ``` We had some clever code that was able to recognize that since we only want row `0`, it's OK if other rows are missing column `b`. I removed that because it's tricky to maintain, and now that query needs to be written like: ```bash 〉[{a:1 b:2} {a:3}].b?.0 2 ``` I think the regression is acceptable for now. I plan to do more work in the future to enable streaming of cell path accesses, and when that happens I'll be able to make `.b.0` work again.
2023-03-16 03:50:58 +00:00
"true",
)
}
#[test]
fn string_cell_path() -> TestResult {
run_test(
r#"let x = "name"; [["name", "score"]; [a, b], [c, d]] | get $x | get 1"#,
"c",
)
}
#[test]
fn split_row() -> TestResult {
run_test(r#""hello world" | split row " " | get 1"#, "world")
}
#[test]
fn split_column() -> TestResult {
run_test(
r#""hello world" | split column " " | get "column1".0"#,
"hello",
)
}
#[test]
fn wrap() -> TestResult {
run_test(r#"([1, 2, 3] | wrap foo).foo.1"#, "2")
}
#[test]
fn get() -> TestResult {
run_test(
r#"[[name, grade]; [Alice, A], [Betty, B]] | get grade.1"#,
"B",
)
}
#[test]
fn select_1() -> TestResult {
run_test(
r#"([[name, age]; [a, 1], [b, 2]]) | select name | get 1 | get name"#,
"b",
)
}
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#[test]
fn select_2() -> TestResult {
run_test(
r#"[[name, age]; [a, 1] [b, 2]] | get 1 | select age | get age"#,
"2",
)
}
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#[test]
fn update_will_insert() -> TestResult {
run_test(r#"{} | upsert a b | get a"#, "b")
2021-12-27 23:11:20 +00:00
}
#[test]
fn length_for_columns() -> TestResult {
run_test(
remove `--column` from `length` command and remove `record` processing (#10091) # Description This PR removes `record` processing from the `length` command. It just doesn't make sense to try and get the length of a record. This PR also removes the `--column` parameter. If you want to list or count columns, you could use `$table | columns` or `$table | columns | length`. close #10074 ### Before ![image](https://github.com/nushell/nushell/assets/343840/83488316-3ec4-4c32-9583-00341a71f46f) ### After Catches records two different ways now. with the `input_output_types` checker ![image](https://github.com/nushell/nushell/assets/343840/ca67f8b6-359e-4933-ab4d-1b702f8d79cf) and with additional logic in the command for cases like `echo` ![image](https://github.com/nushell/nushell/assets/343840/99064351-b208-4bd3-bab9-535f97cd7ad4) # User-Facing Changes <!-- List of all changes that impact the user experience here. This helps us keep track of breaking changes. --> # Tests + Formatting <!-- Don't forget to add tests that cover your changes. Make sure you've run and fixed any issues with these commands: - `cargo fmt --all -- --check` to check standard code formatting (`cargo fmt --all` applies these changes) - `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass - `cargo run -- -c "use std testing; testing run-tests --path crates/nu-std"` to run the tests for the standard library > **Note** > from `nushell` you can also use the `toolkit` as follows > ```bash > use toolkit.nu # or use an `env_change` hook to activate it automatically > toolkit check pr > ``` --> # After Submitting <!-- If your PR had any user-facing changes, update [the documentation](https://github.com/nushell/nushell.github.io) after the PR is merged, if necessary. This will help us keep the docs up to date. -->
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r#"[[name,age,grade]; [bill,20,a] [a b c]] | columns | length"#,
"3",
)
}
#[test]
fn length_for_rows() -> TestResult {
run_test(r#"[[name,age,grade]; [bill,20,a] [a b c]] | length"#, "2")
}
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#[test]
fn length_defaulted_columns() -> TestResult {
run_test(
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r#"[[name, age]; [test, 10]] | default 11 age | get 0 | columns | length"#,
"2",
)
}
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#[test]
Make `get` hole errors and cell path hole errors identical (improvement on #7002) (#7647) # Description This closes #7498, as well as fixes an issue reported in https://github.com/nushell/nushell/pull/7002#issuecomment-1368340773 BEFORE: ``` 〉[{foo: 'bar'} {}] | get foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #5:1:1] 1 │ [{foo: 'bar'} {}] | get foo · ────────┬──────── ─┬─ · │ ╰── value originates here · ╰── cannot find column 'Empty cell' ╰──── 〉[{foo: 'bar'} {}].foo ╭───┬─────╮ │ 0 │ bar │ │ 1 │ │ ╰───┴─────╯ ``` AFTER: ``` 〉[{foo: 'bar'} {}] | get foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #1:1:1] 1 │ [{foo: 'bar'} {}] | get foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── 〉[{foo: 'bar'} {}].foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #3:1:1] 1 │ [{foo: 'bar'} {}].foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── ``` EDIT: This also changes the semantics of `get`/`select` `-i` somewhat. I've decided to leave it like this because it works more intuitively with `default` and `compact`. BEFORE: ``` 〉[{a:1} {b:2} {a:3}] | select -i foo | to nuon null ``` AFTER: ``` 〉[{a:1} {b:2} {a:3}] | select -i foo | to nuon [[foo]; [null], [null], [null]] ``` # User-Facing Changes See above. EDIT: the issue with holes in cases like ` [{foo: 'bar'} {}].foo.0` versus ` [{foo: 'bar'} {}].0.foo` has been resolved. # Tests + Formatting Don't forget to add tests that cover your changes. Make sure you've run and fixed any issues with these commands: - `cargo fmt --all -- --check` to check standard code formatting (`cargo fmt --all` applies these changes) - `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A clippy::needless_collect` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass # After Submitting If your PR had any user-facing changes, update [the documentation](https://github.com/nushell/nushell.github.io) after the PR is merged, if necessary. This will help us keep the docs up to date.
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fn nullify_errors() -> TestResult {
Optional members in cell paths: Attempt 2 (#8379) This is a follow up from https://github.com/nushell/nushell/pull/7540. Please provide feedback if you have the time! ## Summary This PR lets you use `?` to indicate that a member in a cell path is optional and Nushell should return `null` if that member cannot be accessed. Unlike the previous PR, `?` is now a _postfix_ modifier for cell path members. A cell path of `.foo?.bar` means that `foo` is optional and `bar` is not. `?` does _not_ suppress all errors; it is intended to help in situations where data has "holes", i.e. the data types are correct but something is missing. Type mismatches (like trying to do a string path access on a date) will still fail. ### Record Examples ```bash { foo: 123 }.foo # returns 123 { foo: 123 }.bar # errors { foo: 123 }.bar? # returns null { foo: 123 } | get bar # errors { foo: 123 } | get bar? # returns null { foo: 123 }.bar.baz # errors { foo: 123 }.bar?.baz # errors because `baz` is not present on the result from `bar?` { foo: 123 }.bar.baz? # errors { foo: 123 }.bar?.baz? # returns null ``` ### List Examples ``` 〉[{foo: 1} {foo: 2} {}].foo Error: nu::shell::column_not_found × Cannot find column ╭─[entry #30:1:1] 1 │ [{foo: 1} {foo: 2} {}].foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── 〉[{foo: 1} {foo: 2} {}].foo? ╭───┬───╮ │ 0 │ 1 │ │ 1 │ 2 │ │ 2 │ │ ╰───┴───╯ 〉[{foo: 1} {foo: 2} {}].foo?.2 | describe nothing 〉[a b c].4? | describe nothing 〉[{foo: 1} {foo: 2} {}] | where foo? == 1 ╭───┬─────╮ │ # │ foo │ ├───┼─────┤ │ 0 │ 1 │ ╰───┴─────╯ ``` # Breaking changes 1. Column names with `?` in them now need to be quoted. 2. The `-i`/`--ignore-errors` flag has been removed from `get` and `select` 1. After this PR, most `get` error handling can be done with `?` and/or `try`/`catch`. 4. Cell path accesses like this no longer work without a `?`: ```bash 〉[{a:1 b:2} {a:3}].b.0 2 ``` We had some clever code that was able to recognize that since we only want row `0`, it's OK if other rows are missing column `b`. I removed that because it's tricky to maintain, and now that query needs to be written like: ```bash 〉[{a:1 b:2} {a:3}].b?.0 2 ``` I think the regression is acceptable for now. I plan to do more work in the future to enable streaming of cell path accesses, and when that happens I'll be able to make `.b.0` work again.
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run_test("([{a:1} {a:2} {a:3}] | get foo? | length) == 3", "true")?;
Make `get` hole errors and cell path hole errors identical (improvement on #7002) (#7647) # Description This closes #7498, as well as fixes an issue reported in https://github.com/nushell/nushell/pull/7002#issuecomment-1368340773 BEFORE: ``` 〉[{foo: 'bar'} {}] | get foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #5:1:1] 1 │ [{foo: 'bar'} {}] | get foo · ────────┬──────── ─┬─ · │ ╰── value originates here · ╰── cannot find column 'Empty cell' ╰──── 〉[{foo: 'bar'} {}].foo ╭───┬─────╮ │ 0 │ bar │ │ 1 │ │ ╰───┴─────╯ ``` AFTER: ``` 〉[{foo: 'bar'} {}] | get foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #1:1:1] 1 │ [{foo: 'bar'} {}] | get foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── 〉[{foo: 'bar'} {}].foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #3:1:1] 1 │ [{foo: 'bar'} {}].foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── ``` EDIT: This also changes the semantics of `get`/`select` `-i` somewhat. I've decided to leave it like this because it works more intuitively with `default` and `compact`. BEFORE: ``` 〉[{a:1} {b:2} {a:3}] | select -i foo | to nuon null ``` AFTER: ``` 〉[{a:1} {b:2} {a:3}] | select -i foo | to nuon [[foo]; [null], [null], [null]] ``` # User-Facing Changes See above. EDIT: the issue with holes in cases like ` [{foo: 'bar'} {}].foo.0` versus ` [{foo: 'bar'} {}].0.foo` has been resolved. # Tests + Formatting Don't forget to add tests that cover your changes. Make sure you've run and fixed any issues with these commands: - `cargo fmt --all -- --check` to check standard code formatting (`cargo fmt --all` applies these changes) - `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A clippy::needless_collect` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass # After Submitting If your PR had any user-facing changes, update [the documentation](https://github.com/nushell/nushell.github.io) after the PR is merged, if necessary. This will help us keep the docs up to date.
2023-01-02 22:45:43 +00:00
run_test(
Optional members in cell paths: Attempt 2 (#8379) This is a follow up from https://github.com/nushell/nushell/pull/7540. Please provide feedback if you have the time! ## Summary This PR lets you use `?` to indicate that a member in a cell path is optional and Nushell should return `null` if that member cannot be accessed. Unlike the previous PR, `?` is now a _postfix_ modifier for cell path members. A cell path of `.foo?.bar` means that `foo` is optional and `bar` is not. `?` does _not_ suppress all errors; it is intended to help in situations where data has "holes", i.e. the data types are correct but something is missing. Type mismatches (like trying to do a string path access on a date) will still fail. ### Record Examples ```bash { foo: 123 }.foo # returns 123 { foo: 123 }.bar # errors { foo: 123 }.bar? # returns null { foo: 123 } | get bar # errors { foo: 123 } | get bar? # returns null { foo: 123 }.bar.baz # errors { foo: 123 }.bar?.baz # errors because `baz` is not present on the result from `bar?` { foo: 123 }.bar.baz? # errors { foo: 123 }.bar?.baz? # returns null ``` ### List Examples ``` 〉[{foo: 1} {foo: 2} {}].foo Error: nu::shell::column_not_found × Cannot find column ╭─[entry #30:1:1] 1 │ [{foo: 1} {foo: 2} {}].foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── 〉[{foo: 1} {foo: 2} {}].foo? ╭───┬───╮ │ 0 │ 1 │ │ 1 │ 2 │ │ 2 │ │ ╰───┴───╯ 〉[{foo: 1} {foo: 2} {}].foo?.2 | describe nothing 〉[a b c].4? | describe nothing 〉[{foo: 1} {foo: 2} {}] | where foo? == 1 ╭───┬─────╮ │ # │ foo │ ├───┼─────┤ │ 0 │ 1 │ ╰───┴─────╯ ``` # Breaking changes 1. Column names with `?` in them now need to be quoted. 2. The `-i`/`--ignore-errors` flag has been removed from `get` and `select` 1. After this PR, most `get` error handling can be done with `?` and/or `try`/`catch`. 4. Cell path accesses like this no longer work without a `?`: ```bash 〉[{a:1 b:2} {a:3}].b.0 2 ``` We had some clever code that was able to recognize that since we only want row `0`, it's OK if other rows are missing column `b`. I removed that because it's tricky to maintain, and now that query needs to be written like: ```bash 〉[{a:1 b:2} {a:3}].b?.0 2 ``` I think the regression is acceptable for now. I plan to do more work in the future to enable streaming of cell path accesses, and when that happens I'll be able to make `.b.0` work again.
2023-03-16 03:50:58 +00:00
"([{a:1} {a:2} {a:3}] | get foo? | to nuon) == '[null, null, null]'",
Make `get` hole errors and cell path hole errors identical (improvement on #7002) (#7647) # Description This closes #7498, as well as fixes an issue reported in https://github.com/nushell/nushell/pull/7002#issuecomment-1368340773 BEFORE: ``` 〉[{foo: 'bar'} {}] | get foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #5:1:1] 1 │ [{foo: 'bar'} {}] | get foo · ────────┬──────── ─┬─ · │ ╰── value originates here · ╰── cannot find column 'Empty cell' ╰──── 〉[{foo: 'bar'} {}].foo ╭───┬─────╮ │ 0 │ bar │ │ 1 │ │ ╰───┴─────╯ ``` AFTER: ``` 〉[{foo: 'bar'} {}] | get foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #1:1:1] 1 │ [{foo: 'bar'} {}] | get foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── 〉[{foo: 'bar'} {}].foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #3:1:1] 1 │ [{foo: 'bar'} {}].foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── ``` EDIT: This also changes the semantics of `get`/`select` `-i` somewhat. I've decided to leave it like this because it works more intuitively with `default` and `compact`. BEFORE: ``` 〉[{a:1} {b:2} {a:3}] | select -i foo | to nuon null ``` AFTER: ``` 〉[{a:1} {b:2} {a:3}] | select -i foo | to nuon [[foo]; [null], [null], [null]] ``` # User-Facing Changes See above. EDIT: the issue with holes in cases like ` [{foo: 'bar'} {}].foo.0` versus ` [{foo: 'bar'} {}].0.foo` has been resolved. # Tests + Formatting Don't forget to add tests that cover your changes. Make sure you've run and fixed any issues with these commands: - `cargo fmt --all -- --check` to check standard code formatting (`cargo fmt --all` applies these changes) - `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A clippy::needless_collect` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass # After Submitting If your PR had any user-facing changes, update [the documentation](https://github.com/nushell/nushell.github.io) after the PR is merged, if necessary. This will help us keep the docs up to date.
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"true",
)
}
#[test]
fn nullify_holes() -> TestResult {
run_test(
Optional members in cell paths: Attempt 2 (#8379) This is a follow up from https://github.com/nushell/nushell/pull/7540. Please provide feedback if you have the time! ## Summary This PR lets you use `?` to indicate that a member in a cell path is optional and Nushell should return `null` if that member cannot be accessed. Unlike the previous PR, `?` is now a _postfix_ modifier for cell path members. A cell path of `.foo?.bar` means that `foo` is optional and `bar` is not. `?` does _not_ suppress all errors; it is intended to help in situations where data has "holes", i.e. the data types are correct but something is missing. Type mismatches (like trying to do a string path access on a date) will still fail. ### Record Examples ```bash { foo: 123 }.foo # returns 123 { foo: 123 }.bar # errors { foo: 123 }.bar? # returns null { foo: 123 } | get bar # errors { foo: 123 } | get bar? # returns null { foo: 123 }.bar.baz # errors { foo: 123 }.bar?.baz # errors because `baz` is not present on the result from `bar?` { foo: 123 }.bar.baz? # errors { foo: 123 }.bar?.baz? # returns null ``` ### List Examples ``` 〉[{foo: 1} {foo: 2} {}].foo Error: nu::shell::column_not_found × Cannot find column ╭─[entry #30:1:1] 1 │ [{foo: 1} {foo: 2} {}].foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── 〉[{foo: 1} {foo: 2} {}].foo? ╭───┬───╮ │ 0 │ 1 │ │ 1 │ 2 │ │ 2 │ │ ╰───┴───╯ 〉[{foo: 1} {foo: 2} {}].foo?.2 | describe nothing 〉[a b c].4? | describe nothing 〉[{foo: 1} {foo: 2} {}] | where foo? == 1 ╭───┬─────╮ │ # │ foo │ ├───┼─────┤ │ 0 │ 1 │ ╰───┴─────╯ ``` # Breaking changes 1. Column names with `?` in them now need to be quoted. 2. The `-i`/`--ignore-errors` flag has been removed from `get` and `select` 1. After this PR, most `get` error handling can be done with `?` and/or `try`/`catch`. 4. Cell path accesses like this no longer work without a `?`: ```bash 〉[{a:1 b:2} {a:3}].b.0 2 ``` We had some clever code that was able to recognize that since we only want row `0`, it's OK if other rows are missing column `b`. I removed that because it's tricky to maintain, and now that query needs to be written like: ```bash 〉[{a:1 b:2} {a:3}].b?.0 2 ``` I think the regression is acceptable for now. I plan to do more work in the future to enable streaming of cell path accesses, and when that happens I'll be able to make `.b.0` work again.
2023-03-16 03:50:58 +00:00
"([{a:1} {b:2} {a:3}] | get a? | to nuon) == '[1, null, 3]'",
Make `get` hole errors and cell path hole errors identical (improvement on #7002) (#7647) # Description This closes #7498, as well as fixes an issue reported in https://github.com/nushell/nushell/pull/7002#issuecomment-1368340773 BEFORE: ``` 〉[{foo: 'bar'} {}] | get foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #5:1:1] 1 │ [{foo: 'bar'} {}] | get foo · ────────┬──────── ─┬─ · │ ╰── value originates here · ╰── cannot find column 'Empty cell' ╰──── 〉[{foo: 'bar'} {}].foo ╭───┬─────╮ │ 0 │ bar │ │ 1 │ │ ╰───┴─────╯ ``` AFTER: ``` 〉[{foo: 'bar'} {}] | get foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #1:1:1] 1 │ [{foo: 'bar'} {}] | get foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── 〉[{foo: 'bar'} {}].foo Error: nu::shell::column_not_found (link) × Cannot find column ╭─[entry #3:1:1] 1 │ [{foo: 'bar'} {}].foo · ─┬ ─┬─ · │ ╰── cannot find column 'foo' · ╰── value originates here ╰──── ``` EDIT: This also changes the semantics of `get`/`select` `-i` somewhat. I've decided to leave it like this because it works more intuitively with `default` and `compact`. BEFORE: ``` 〉[{a:1} {b:2} {a:3}] | select -i foo | to nuon null ``` AFTER: ``` 〉[{a:1} {b:2} {a:3}] | select -i foo | to nuon [[foo]; [null], [null], [null]] ``` # User-Facing Changes See above. EDIT: the issue with holes in cases like ` [{foo: 'bar'} {}].foo.0` versus ` [{foo: 'bar'} {}].0.foo` has been resolved. # Tests + Formatting Don't forget to add tests that cover your changes. Make sure you've run and fixed any issues with these commands: - `cargo fmt --all -- --check` to check standard code formatting (`cargo fmt --all` applies these changes) - `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A clippy::needless_collect` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass # After Submitting If your PR had any user-facing changes, update [the documentation](https://github.com/nushell/nushell.github.io) after the PR is merged, if necessary. This will help us keep the docs up to date.
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"true",
)
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}
#[test]
fn get_insensitive() -> TestResult {
run_test(
r#"[[name, age]; [a, 1] [b, 2]] | get NAmE | select 0 | get 0"#,
"a",
)
}