nushell/crates/nu-command/tests/commands/first.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_first_rows_by_amount() {
Playground::setup("first_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 | first 3 | length");
assert_eq!(actual.out, "3");
})
}
#[test]
fn gets_all_rows_if_amount_higher_than_all_rows() {
Playground::setup("first_test_2", |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 | first 99 | length");
assert_eq!(actual.out, "4");
})
}
#[test]
fn gets_first_row_when_no_amount_given() {
Playground::setup("first_test_3", |dirs, sandbox| {
sandbox.with_files(vec![EmptyFile("caballeros.txt"), EmptyFile("arepas.clu")]);
let actual = nu!(cwd: dirs.test(), "ls | first | length");
assert_eq!(actual.out, "1");
})
}
#[test]
fn gets_first_row_as_list_when_amount_given() {
let actual = nu!("[1, 2, 3] | first 1 | describe");
assert_eq!(actual.out, "list<int> (stream)");
}
#[test]
fn gets_first_bytes() {
let actual = nu!("(0x[aa bb cc] | first 2) == 0x[aa bb]");
assert_eq!(actual.out, "true");
}
#[test]
fn gets_first_byte() {
let actual = nu!("0x[aa bb cc] | first");
assert_eq!(actual.out, "170");
}
#[test]
// covers a situation where `first` used to behave strangely on list<binary> input
fn works_with_binary_list() {
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!("([0x[01 11]] | first) == 0x[01 11]");
assert_eq!(actual.out, "true");
}
#[test]
fn errors_on_negative_rows() {
let actual = nu!("[1, 2, 3] | first -10");
assert!(actual.err.contains("use a positive value"));
}
#[test]
fn errors_on_empty_list_when_no_rows_given() {
let actual = nu!("[] | first");
assert!(actual.err.contains("index too large"));
}