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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.
43 lines
989 B
Rust
43 lines
989 B
Rust
use nu_test_support::nu;
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#[test]
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fn can_round_very_large_numbers() {
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let actual = nu!("18.1372544780074142289927665486772012345 | math round");
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assert_eq!(actual.out, "18")
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}
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#[test]
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fn can_round_very_large_numbers_with_precision() {
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let actual = nu!("18.13725447800741422899276654867720121457878988 | math round --precision 10");
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assert_eq!(actual.out, "18.137254478")
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}
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#[test]
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fn can_round_integer_with_negative_precision() {
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let actual = nu!("123 | math round --precision -1");
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assert_eq!(actual.out, "120")
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}
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#[test]
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fn can_round_float_with_negative_precision() {
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let actual = nu!("123.3 | math round --precision -1");
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assert_eq!(actual.out, "120")
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}
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#[test]
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fn fails_with_wrong_input_type() {
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let actual = nu!("\"not_a_number\" | math round");
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assert!(actual.err.contains("command doesn't support"))
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}
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#[test]
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fn const_round() {
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let actual = nu!("const ROUND = 18.345 | math round; $ROUND");
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assert_eq!(actual.out, "18");
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}
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