nushell/crates/nu-command/tests/commands/last.rs

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2019-12-17 19:54:39 +01:00
use nu_test_support::fs::Stub::EmptyFile;
use nu_test_support::nu;
2019-12-17 19:54:39 +01:00
use nu_test_support::playground::Playground;
#[test]
fn gets_the_last_row() {
let actual = nu!(
cwd: "tests/fixtures/formats",
"ls | sort-by name | last 1 | get name.0 | str trim"
);
assert_eq!(actual.out, "utf16.ini");
}
#[test]
fn gets_last_rows_by_amount() {
Playground::setup("last_test_1", |dirs, sandbox| {
sandbox.with_files(vec![
EmptyFile("los.txt"),
EmptyFile("tres.txt"),
EmptyFile("amigos.txt"),
EmptyFile("arepas.clu"),
]);
let actual = nu!(cwd: dirs.test(), "ls | last 3 | length");
assert_eq!(actual.out, "3");
})
}
#[test]
fn gets_last_row_when_no_amount_given() {
Playground::setup("last_test_2", |dirs, sandbox| {
sandbox.with_files(vec![EmptyFile("caballeros.txt"), EmptyFile("arepas.clu")]);
let actual = nu!(cwd: dirs.test(), "ls | last | length");
assert_eq!(actual.out, "1");
})
}
#[test]
fn requests_more_rows_than_table_has() {
let actual = nu!("[date] | last 50 | length");
assert_eq!(actual.out, "1");
}
#[test]
fn gets_last_row_as_list_when_amount_given() {
let actual = nu!("[1, 2, 3] | last 1 | describe");
assert_eq!(actual.out, "list<int> (stream)");
}
#[test]
fn gets_last_bytes() {
let actual = nu!("(0x[aa bb cc] | last 2) == 0x[bb cc]");
assert_eq!(actual.out, "true");
}
#[test]
fn gets_last_byte() {
let actual = nu!("0x[aa bb cc] | last");
assert_eq!(actual.out, "204");
}
#[test]
fn last_errors_on_negative_index() {
let actual = nu!("[1, 2, 3] | last -2");
assert!(actual.err.contains("use a positive value"));
}
#[test]
fn fail_on_non_iterator() {
Removes unnecessary cwd and pipeline from various tests (#9202) # Description <!-- Thank you for improving Nushell. Please, check our [contributing guide](../CONTRIBUTING.md) and talk to the core team before making major changes. Description of your pull request goes here. **Provide examples and/or screenshots** if your changes affect the user experience. --> Cleans up various tests that unnecessarily use the `cwd` argument of `nu!`, and the `pipeline` function for single line commands. Also replaces some unnecessary raw strings with normal strings. Part of #8670. # User-Facing Changes <!-- List of all changes that impact the user experience here. This helps us keep track of breaking changes. --> None # 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 -A clippy::result_large_err` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass - `cargo run -- crates/nu-std/tests/run.nu` 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 > ``` --> All checks 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. -->
2023-05-18 01:55:26 +02:00
let actual = nu!("1 | last");
Input output checking (#9680) # Description This PR tights input/output type-checking a bit more. There are a lot of commands that don't have correct input/output types, so part of the effort is updating them. This PR now contains updates to commands that had wrong input/output signatures. It doesn't add examples for these new signatures, but that can be follow-up work. # User-Facing Changes BREAKING CHANGE BREAKING CHANGE This work enforces many more checks on pipeline type correctness than previous nushell versions. This strictness may uncover incompatibilities in existing scripts or shortcomings in the type information for internal commands. # 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 -A clippy::result_large_err` 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. -->
2023-07-14 05:20:35 +02:00
assert!(actual.err.contains("command doesn't support"));
}
#[test]
fn errors_on_empty_list_when_no_rows_given() {
let actual = nu!("[] | last");
assert!(actual.err.contains("index too large"));
}