nushell/crates/nu-command/tests/commands/all.rs
Jakub Žádník 2bacc29d30
Replace row conditions with closures in commands (#7428)
# Description

This PR changes some commands that previously accepted row conditions
(like `$it > 5`) as parameter to accept closures instead. The reasons
are:
a) The commands would need to move into parser keywords in the future
while they feel more like commands to be implemented in Nushell code as
a part of standard library.
b) In scripts, it is useful to store the predicate condition in a
variable which you can't do with row conditions.
c) These commands are not used that often to benefit enough from the
shorter row condition syntax

# User-Facing Changes

The following commands now accept **closure** instead of a **row
condition**:
- `take until`
- `take while`
- `skip until`
- `skip while`
- `any`
- `all`

This is a part of an effort to move away from shape-directed parsing.
Related PR: https://github.com/nushell/nushell/pull/7365

# 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.
2022-12-10 19:24:06 +02:00

130 lines
2.9 KiB
Rust

use nu_test_support::{nu, pipeline};
#[test]
fn checks_all_rows_are_true() {
let actual = nu!(
cwd: ".", pipeline(
r#"
echo [ "Andrés", "Andrés", "Andrés" ]
| all {|it| $it == "Andrés" }
"#
));
assert_eq!(actual.out, "true");
}
#[test]
fn checks_all_rows_are_false_with_param() {
let actual = nu!(
cwd: ".", pipeline(
r#"
[1, 2, 3, 4] | all { |a| $a >= 5 }
"#
));
assert_eq!(actual.out, "false");
}
#[test]
fn checks_all_rows_are_true_with_param() {
let actual = nu!(
cwd: ".", pipeline(
r#"
[1, 2, 3, 4] | all { |a| $a < 5 }
"#
));
assert_eq!(actual.out, "true");
}
#[test]
fn checks_all_columns_of_a_table_is_true() {
let actual = nu!(
cwd: ".", pipeline(
r#"
echo [
[ first_name, last_name, rusty_at, likes ];
[ Andrés, Robalino, 10/11/2013, 1 ]
[ Jonathan, Turner, 10/12/2013, 1 ]
[ Darren, Schroeder, 10/11/2013, 1 ]
[ Yehuda, Katz, 10/11/2013, 1 ]
]
| all {|x| $x.likes > 0 }
"#
));
assert_eq!(actual.out, "true");
}
#[test]
fn checks_if_all_returns_error_with_invalid_command() {
let actual = nu!(
cwd: ".", pipeline(
r#"
[red orange yellow green blue purple] | all {|it| ($it | st length) > 4 }
"#
));
assert!(actual.err.contains("can't run executable") || actual.err.contains("did you mean"));
}
#[test]
fn works_with_1_param_blocks() {
let actual = nu!(
cwd: ".", pipeline(
r#"[1 2 3] | all {|e| print $e | true }"#
));
assert_eq!(actual.out, "123true");
}
#[test]
fn works_with_0_param_blocks() {
let actual = nu!(
cwd: ".", pipeline(
r#"[1 2 3] | all { print $in | true }"#
));
assert_eq!(actual.out, "123true");
}
#[test]
fn early_exits_with_1_param_blocks() {
let actual = nu!(
cwd: ".", pipeline(
r#"[1 2 3] | all {|e| print $e | false }"#
));
assert_eq!(actual.out, "1false");
}
#[test]
fn early_exits_with_0_param_blocks() {
let actual = nu!(
cwd: ".", pipeline(
r#"[1 2 3] | all { print $in | false }"#
));
assert_eq!(actual.out, "1false");
}
#[test]
fn uses_optional_index_argument() {
let actual = nu!(
cwd: ".", pipeline(
r#"[7 8 9] | all {|el ind| print $ind | true }"#
));
assert_eq!(actual.out, "012true");
}
#[test]
fn unique_env_each_iteration() {
let actual = nu!(
cwd: "tests/fixtures/formats",
"[1 2] | all { print ($env.PWD | str ends-with 'formats') | cd '/' | true } | to nuon"
);
assert_eq!(actual.out, "truetruetrue");
}