nushell/crates/nu-command/tests/commands/math/median.rs
Qnbie e530e7d654
Make the math commands const (#13566)
This PR closes [Issue
#13482](https://github.com/nushell/nushell/issues/13482)

# Description
This PR tend to make all math function to be constant. 

# User-Facing Changes
The math commands now can be used as constant methods.

### Some Example
```
> const MODE = [3 3 9 12 12 15] | math mode
> $MODE
╭───┬────╮
│ 0 │  3 │
│ 1 │ 12 │
╰───┴────╯

> const LOG = [16 8 4] | math log 2
> $LOG
╭───┬──────╮
│ 0 │ 4.00 │
│ 1 │ 3.00 │
│ 2 │ 2.00 │
╰───┴──────╯

> const VAR = [1 3 5] | math variance
> $VAR
2.6666666666666665
```

# Tests + Formatting
Tests are added for all of the math command to test there constant
behavior.

I mostly focused on the actual user experience, not the correctness of
the methods and algorithms.

# After Submitting
I think this change don't require any additional documentation. Feel
free to correct me in this topic please.
2024-08-07 22:20:33 +02:00

44 lines
786 B
Rust

use nu_test_support::{nu, pipeline};
#[test]
fn median_numbers_with_even_rows() {
let actual = nu!(pipeline(
r#"
echo [10 6 19 21 4]
| math median
"#
));
assert_eq!(actual.out, "10")
}
#[test]
fn median_numbers_with_odd_rows() {
let actual = nu!(pipeline(
r#"
echo [3 8 9 12 12 15]
| math median
"#
));
assert_eq!(actual.out, "10.5")
}
#[test]
fn median_mixed_numbers() {
let actual = nu!(pipeline(
r#"
echo [-11.5 -13.5 10]
| math median
"#
));
assert_eq!(actual.out, "-11.5")
}
#[test]
fn const_median() {
let actual = nu!("const MEDIAN = [1 3 5] | math median; $MEDIAN");
assert_eq!(actual.out, "3");
}