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https://github.com/nushell/nushell.git
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c19944f291
# Description Following from #13377, this PR refactors the related `window` command. In the case where `window` should behave exactly like `chunks`, it now reuses the same code that `chunks` does. Otherwise, the other cases have been rewritten and have resulted in a performance increase: | window size | stride | old time (ms) | new time (ms) | | -----------:| ------:| -------------:| -------------:| | 20 | 1 | 757 | 722 | | 2 | 1 | 364 | 333 | | 1 | 1 | 343 | 293 | | 20 | 20 | 90 | 63 | | 2 | 2 | 215 | 175 | | 20 | 30 | 74 | 60 | | 2 | 4 | 141 | 110 | # User-Facing Changes `window` will now error if the window size or stride is 0, which is technically a breaking change.
104 lines
2.5 KiB
Rust
104 lines
2.5 KiB
Rust
use nu_test_support::nu;
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#[test]
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fn window_size_negative() {
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let actual = nu!("[0 1 2] | window -1");
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assert!(actual.err.contains("positive"));
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}
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#[test]
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fn window_size_zero() {
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let actual = nu!("[0 1 2] | window 0");
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assert!(actual.err.contains("zero"));
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}
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#[test]
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fn window_size_not_int() {
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let actual = nu!("[0 1 2] | window (if true { 1sec })");
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assert!(actual.err.contains("can't convert"));
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}
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#[test]
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fn stride_negative() {
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let actual = nu!("[0 1 2] | window 1 -s -1");
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assert!(actual.err.contains("positive"));
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}
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#[test]
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fn stride_zero() {
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let actual = nu!("[0 1 2] | window 1 -s 0");
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assert!(actual.err.contains("zero"));
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}
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#[test]
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fn stride_not_int() {
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let actual = nu!("[0 1 2] | window 1 -s (if true { 1sec })");
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assert!(actual.err.contains("can't convert"));
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}
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#[test]
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fn empty() {
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let actual = nu!("[] | window 2 | is-empty");
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assert_eq!(actual.out, "true");
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}
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#[test]
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fn list_stream() {
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let actual = nu!("([0 1 2] | every 1 | window 2) == ([0 1 2] | window 2)");
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assert_eq!(actual.out, "true");
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}
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#[test]
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fn table_stream() {
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let actual = nu!("([[foo bar]; [0 1] [2 3] [4 5]] | every 1 | window 2) == ([[foo bar]; [0 1] [2 3] [4 5]] | window 2)");
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assert_eq!(actual.out, "true");
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}
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#[test]
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fn no_empty_chunks() {
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let actual = nu!("([0 1 2 3 4 5] | window 3 -s 3 -r | length) == 2");
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assert_eq!(actual.out, "true");
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}
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#[test]
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fn same_as_chunks() {
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let actual = nu!("([0 1 2 3 4] | window 2 -s 2 -r) == ([0 1 2 3 4 ] | chunks 2)");
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assert_eq!(actual.out, "true");
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}
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#[test]
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fn stride_equal_to_window_size() {
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let actual = nu!("([0 1 2 3] | window 2 -s 2 | flatten) == [0 1 2 3]");
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assert_eq!(actual.out, "true");
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}
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#[test]
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fn stride_greater_than_window_size() {
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let actual = nu!("([0 1 2 3 4] | window 2 -s 3 | flatten) == [0 1 3 4]");
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assert_eq!(actual.out, "true");
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}
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#[test]
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fn stride_less_than_window_size() {
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let actual = nu!("([0 1 2 3 4 5] | window 3 -s 2 | length) == 2");
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assert_eq!(actual.out, "true");
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}
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#[test]
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fn stride_equal_to_window_size_remainder() {
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let actual = nu!("([0 1 2 3 4] | window 2 -s 2 -r | flatten) == [0 1 2 3 4]");
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assert_eq!(actual.out, "true");
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}
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#[test]
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fn stride_greater_than_window_size_remainder() {
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let actual = nu!("([0 1 2 3 4] | window 2 -s 3 -r | flatten) == [0 1 3 4]");
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assert_eq!(actual.out, "true");
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}
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#[test]
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fn stride_less_than_window_size_remainder() {
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let actual = nu!("([0 1 2 3 4 5] | window 3 -s 2 -r | length) == 3");
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assert_eq!(actual.out, "true");
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}
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