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https://github.com/nushell/nushell
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cc781a1ecd
# Description
When a closure if provided to `group-by`, errors that occur in the
closure are currently ignored. That is, `group-by` will fall back and
use the `"error"` key if an error occurs. For example, the code snippet
below will group all `ls` entries under the `"error"` column.
```nushell
ls | group-by { get nope }
```
This PR changes `group-by` to instead bubble up any errors triggered
inside the closure. In addition, this PR also does some refactoring and
cleanup inside `group-by`.
# User-Facing Changes
Errors are now returned from the closure provided to `group-by` instead
of falling back to the `"error"` group/key.
85 lines
2.5 KiB
Rust
85 lines
2.5 KiB
Rust
use nu_test_support::{nu, pipeline};
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#[test]
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fn groups() {
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let sample = r#"
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[[first_name, last_name, rusty_at, type];
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[Andrés, Robalino, "10/11/2013", A],
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[JT, Turner, "10/12/2013", B],
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[Yehuda, Katz, "10/11/2013", A]]
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"#;
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let actual = nu!(pipeline(&format!(
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r#"
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{sample}
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| group-by rusty_at
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| get "10/11/2013"
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| length
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"#
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)));
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assert_eq!(actual.out, "2");
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}
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#[test]
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fn errors_if_given_unknown_column_name() {
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let sample = r#"
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{
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"nu": {
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"committers": [
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{"name": "Andrés N. Robalino"},
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{"name": "JT Turner"},
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{"name": "Yehuda Katz"}
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],
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"releases": [
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{"version": "0.2"}
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{"version": "0.8"},
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{"version": "0.9999999"}
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],
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"0xATYKARNU": [
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["Th", "e", " "],
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["BIG", " ", "UnO"],
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["punto", "cero"]
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]
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}
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}
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"#;
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let actual = nu!(pipeline(&format!(
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r#"
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'{sample}'
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| from json
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| group-by {{|| get nu.releases.version }}
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"#
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)));
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assert!(actual.err.contains("can't convert list<string> to string"));
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}
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#[test]
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fn errors_if_column_not_found() {
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let sample = r#"
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[[first_name, last_name, rusty_at, type];
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[Andrés, Robalino, "10/11/2013", A],
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[JT, Turner, "10/12/2013", B],
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[Yehuda, Katz, "10/11/2013", A]]
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"#;
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let actual = nu!(pipeline(&format!("{sample} | group-by ttype")));
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assert!(actual.err.contains("did you mean 'type'"),);
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}
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#[test]
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fn group_by_on_empty_list_returns_empty_record() {
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let actual = nu!("[[a b]; [1 2]] | where false | group-by a");
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assert!(actual.err.is_empty());
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assert!(actual.out.contains("empty record"));
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}
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#[test]
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fn optional_cell_path_works() {
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let actual = nu!("[{foo: 123}, {foo: 234}, {bar: 345}] | group-by foo? | to nuon");
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let expected = r#"{"123": [[foo]; [123]], "234": [[foo]; [234]]}"#;
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assert_eq!(actual.out, expected)
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}
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