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af82eeca72
# 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  ### After Catches records two different ways now. with the `input_output_types` checker  and with additional logic in the command for cases like `echo`  # 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. -->
91 lines
2.1 KiB
Rust
91 lines
2.1 KiB
Rust
use nu_test_support::fs::Stub::EmptyFile;
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use nu_test_support::nu;
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use nu_test_support::playground::Playground;
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#[test]
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fn gets_the_last_row() {
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let actual = nu!(
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cwd: "tests/fixtures/formats",
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"ls | sort-by name | last 1 | get name.0 | str trim"
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);
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assert_eq!(actual.out, "utf16.ini");
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}
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#[test]
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fn gets_last_rows_by_amount() {
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Playground::setup("last_test_1", |dirs, sandbox| {
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sandbox.with_files(vec![
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EmptyFile("los.txt"),
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EmptyFile("tres.txt"),
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EmptyFile("amigos.txt"),
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EmptyFile("arepas.clu"),
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]);
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let actual = nu!(cwd: dirs.test(), "ls | last 3 | length");
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assert_eq!(actual.out, "3");
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})
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}
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#[test]
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fn gets_last_row_when_no_amount_given() {
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Playground::setup("last_test_2", |dirs, sandbox| {
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sandbox.with_files(vec![EmptyFile("caballeros.txt"), EmptyFile("arepas.clu")]);
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// FIXME: We should probably change last to return a one row table instead of a record here
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let actual = nu!(cwd: dirs.test(), "ls | last | values | length");
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assert_eq!(actual.out, "4");
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})
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}
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#[test]
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fn requests_more_rows_than_table_has() {
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let actual = nu!("[date] | last 50 | length");
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assert_eq!(actual.out, "1");
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}
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#[test]
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fn gets_last_row_as_list_when_amount_given() {
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let actual = nu!("[1, 2, 3] | last 1 | describe");
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assert_eq!(actual.out, "list<int> (stream)");
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}
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#[test]
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fn gets_last_bytes() {
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let actual = nu!("(0x[aa bb cc] | last 2) == 0x[bb cc]");
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assert_eq!(actual.out, "true");
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}
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#[test]
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fn gets_last_byte() {
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let actual = nu!("0x[aa bb cc] | last");
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assert_eq!(actual.out, "204");
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}
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#[test]
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fn last_errors_on_negative_index() {
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let actual = nu!("[1, 2, 3] | last -2");
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assert!(actual.err.contains("use a positive value"));
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}
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#[test]
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fn fail_on_non_iterator() {
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let actual = nu!("1 | last");
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assert!(actual.err.contains("command doesn't support"));
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}
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#[test]
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fn errors_on_empty_list_when_no_rows_given() {
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let actual = nu!("[] | last");
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assert!(actual.err.contains("index too large"));
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}
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