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20c2de9eed
Fixes #14145 # User-Facing Changes An empty rest match would be `null` previously. Now it will be an empty list. This is a breaking change for any scripts relying on the old behavior. Example script: ```nu match [1] { [_ ..$rest] => { match $rest { null => { "old" } [] => { "new" } } } } ``` This expression would evaluate to "old" on current nu versions and "new" with this patch.
274 lines
7.8 KiB
Rust
274 lines
7.8 KiB
Rust
use nu_test_support::nu;
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use nu_test_support::playground::Playground;
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use std::fs;
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#[test]
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fn match_for_range() {
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let actual = nu!(r#"match 3 { 1..10 => { print "success" } }"#);
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "success");
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}
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#[test]
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fn match_for_range_unmatched() {
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let actual = nu!(r#"match 11 { 1..10 => { print "failure" }, _ => { print "success" }}"#);
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "success");
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}
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#[test]
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fn match_for_record() {
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let actual = nu!("match {a: 11} { {a: $b} => { print $b }}");
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "11");
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}
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#[test]
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fn match_for_record_shorthand() {
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let actual = nu!("match {a: 12} { {$a} => { print $a }}");
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "12");
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}
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#[test]
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fn match_list() {
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let actual = nu!(
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r#"match [1, 2] { [$a] => { print $"single: ($a)" }, [$b, $c] => {print $"double: ($b) ($c)"}}"#
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);
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "double: 1 2");
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}
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#[test]
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fn match_list_rest_ignore() {
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let actual = nu!(
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r#"match [1, 2] { [$a, ..] => { print $"single: ($a)" }, [$b, $c] => {print $"double: ($b) ($c)"}}"#
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);
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "single: 1");
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}
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#[test]
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fn match_list_rest() {
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let actual = nu!(
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r#"match [1, 2, 3] { [$a, ..$remainder] => { print $"single: ($a) ($remainder | math sum)" }, [$b, $c] => {print $"double: ($b) ($c)"}}"#
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);
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "single: 1 5");
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}
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#[test]
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fn match_list_rest_empty() {
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let actual = nu!(r#"match [1] { [1 ..$rest] => { $rest == [] } }"#);
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assert_eq!(actual.out, "true");
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}
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#[test]
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fn match_constant_1() {
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let actual = nu!(
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r#"match 2 { 1 => { print "failure"}, 2 => { print "success" }, 3 => { print "failure" }}"#
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);
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "success");
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}
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#[test]
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fn match_constant_2() {
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let actual = nu!(
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r#"match 2.3 { 1.4 => { print "failure"}, 2.3 => { print "success" }, 3 => { print "failure" }}"#
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);
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "success");
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}
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#[test]
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fn match_constant_3() {
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let actual = nu!(
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r#"match true { false => { print "failure"}, true => { print "success" }, 3 => { print "failure" }}"#
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);
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "success");
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}
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#[test]
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fn match_constant_4() {
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let actual = nu!(
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r#"match "def" { "abc" => { print "failure"}, "def" => { print "success" }, "ghi" => { print "failure" }}"#
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);
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "success");
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}
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#[test]
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fn match_constant_5() {
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let actual = nu!(
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r#"match 2019-08-23 { 2010-01-01 => { print "failure"}, 2019-08-23 => { print "success" }, 2020-02-02 => { print "failure" }}"#
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);
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "success");
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}
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#[test]
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fn match_constant_6() {
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let actual = nu!(
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r#"match 6sec { 2sec => { print "failure"}, 6sec => { print "success" }, 1min => { print "failure" }}"#
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);
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "success");
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}
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#[test]
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fn match_constant_7() {
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let actual = nu!(
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r#"match 1kib { 1kb => { print "failure"}, 1kib => { print "success" }, 2kb => { print "failure" }}"#
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);
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "success");
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}
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#[test]
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fn match_null() {
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let actual = nu!(r#"match null { null => { print "success"}, _ => { print "failure" }}"#);
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assert_eq!(actual.out, "success");
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}
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#[test]
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fn match_or_pattern() {
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let actual = nu!(
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r#"match {b: 7} { {a: $a} | {b: $b} => { print $"success: ($b)" }, _ => { print "failure" }}"#
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);
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "success: 7");
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}
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#[test]
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fn match_or_pattern_overlap_1() {
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let actual = nu!(
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r#"match {a: 7} { {a: $b} | {b: $b} => { print $"success: ($b)" }, _ => { print "failure" }}"#
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);
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "success: 7");
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}
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#[test]
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fn match_or_pattern_overlap_2() {
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let actual = nu!(
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r#"match {b: 7} { {a: $b} | {b: $b} => { print $"success: ($b)" }, _ => { print "failure" }}"#
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);
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "success: 7");
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}
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#[test]
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fn match_doesnt_overwrite_variable() {
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let actual = nu!("let b = 100; match 55 { $b => {} }; print $b");
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// Make sure we don't see any of these values in the output
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// As we do not auto-print loops anymore
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assert_eq!(actual.out, "100");
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}
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#[test]
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fn match_with_guard() {
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let actual = nu!(
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cwd: ".",
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"match [1 2 3] { [$x, ..] if $x mod 2 == 0 => { $x }, $x => { 2 } }"
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);
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assert_eq!(actual.out, "2");
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}
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#[test]
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fn match_with_guard_block_as_guard() {
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// this should work?
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let actual = nu!(
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cwd: ".",
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"match 4 { $x if { $x + 20 > 25 } => { 'good num' }, _ => { 'terrible num' } }"
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);
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assert!(actual.err.contains("Match guard not bool"));
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}
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#[test]
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fn match_with_guard_parens_expr_as_guard() {
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let actual = nu!(
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cwd: ".",
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"match 4 { $x if ($x + 20 > 25) => { 'good num' }, _ => { 'terrible num' } }"
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);
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assert_eq!(actual.out, "terrible num");
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}
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#[test]
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fn match_with_guard_not_bool() {
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let actual = nu!(
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cwd: ".",
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"match 4 { $x if $x + 1 => { 'err!()' }, _ => { 'unreachable!()' } }"
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);
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assert!(actual.err.contains("Match guard not bool"));
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}
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#[test]
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fn match_with_guard_no_expr_after_if() {
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let actual = nu!(
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cwd: ".",
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"match 4 { $x if => { 'err!()' }, _ => { 'unreachable!()' } }"
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);
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assert!(actual.err.contains("Match guard without an expression"));
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}
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#[test]
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fn match_with_comment_1() {
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Playground::setup("match_with_comment", |dirs, _| {
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let data = r#"
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match 1 {
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# comment
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_ => { print 'success' }
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}
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"#;
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fs::write(dirs.root().join("match_test"), data).expect("Unable to write file");
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let actual = nu!(
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cwd: dirs.root(),
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"source match_test"
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);
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assert_eq!(actual.out, "success");
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});
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}
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#[test]
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fn match_with_comment_2() {
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Playground::setup("match_with_comment", |dirs, _| {
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let data = r#"
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match 1 {
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_ => { print 'success' } # comment
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}
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"#;
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fs::write(dirs.root().join("match_test"), data).expect("Unable to write file");
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let actual = nu!(
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cwd: dirs.root(),
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"source match_test"
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);
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assert_eq!(actual.out, "success");
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});
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}
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