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e530e7d654
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.
86 lines
2.4 KiB
Rust
86 lines
2.4 KiB
Rust
use nu_test_support::{nu, pipeline};
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use std::str::FromStr;
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#[test]
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fn all() {
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let sample = r#"
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{
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meals: [
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{description: "1 large egg", calories: 90},
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{description: "1 cup white rice", calories: 250},
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{description: "1 tablespoon fish oil", calories: 108}
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]
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}
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"#;
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let actual = nu!(pipeline(&format!(
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r#"
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{sample}
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| get meals
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| get calories
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| math sum
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"#
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)));
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assert_eq!(actual.out, "448");
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}
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#[test]
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#[allow(clippy::unreadable_literal)]
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#[allow(clippy::float_cmp)]
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fn compute_sum_of_individual_row() -> Result<(), String> {
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let answers_for_columns = [
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("cpu", 88.257434),
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("mem", 3032375296.),
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("virtual", 102579965952.),
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];
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for (column_name, expected_value) in answers_for_columns {
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let actual = nu!(
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cwd: "tests/fixtures/formats/",
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format!("open sample-ps-output.json | select {column_name} | math sum | get {column_name}")
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);
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let result =
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f64::from_str(&actual.out).map_err(|_| String::from("Failed to parse float."))?;
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assert_eq!(result, expected_value);
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}
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Ok(())
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}
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#[test]
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#[allow(clippy::unreadable_literal)]
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#[allow(clippy::float_cmp)]
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fn compute_sum_of_table() -> Result<(), String> {
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let answers_for_columns = [
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("cpu", 88.257434),
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("mem", 3032375296.),
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("virtual", 102579965952.),
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];
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for (column_name, expected_value) in answers_for_columns {
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let actual = nu!(
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cwd: "tests/fixtures/formats/",
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format!("open sample-ps-output.json | select cpu mem virtual | math sum | get {column_name}")
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);
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let result =
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f64::from_str(&actual.out).map_err(|_| String::from("Failed to parse float."))?;
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assert_eq!(result, expected_value);
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}
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Ok(())
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}
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#[test]
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fn sum_of_a_row_containing_a_table_is_an_error() {
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let actual = nu!(
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cwd: "tests/fixtures/formats/",
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"open sample-sys-output.json | math sum"
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);
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assert!(actual
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.err
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.contains("Attempted to compute the sum of a value that cannot be summed"));
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}
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#[test]
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fn const_sum() {
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let actual = nu!("const SUM = [1 3] | math sum; $SUM");
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assert_eq!(actual.out, "4");
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}
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