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bytes, strings: add ContainsFunc

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Fixes #54386.

Change-Id: I78747da337ed6129e4f7426dd0483a644bed82e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/460216
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: hopehook <hopehook@golangcn.org>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
hopehook 2023-01-03 16:23:16 +08:00 • committed by Gopher Robot
parent 43f9b826c3
commit 0b3f58c48e
5 changed files with 34 additions and 0 deletions
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11
src/bytes/bytes_test.go
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@ -1847,6 +1847,17 @@ func TestContainsRune(t *testing.T) {
}
}
func TestContainsFunc(t *testing.T) {
for _, ct := range ContainsRuneTests {
if ContainsFunc(ct.b, func(r rune) bool {
return ct.r == r
}) != ct.expected {
t.Errorf("ContainsFunc(%q, func(%q)) = %v, want %v",
ct.b, ct.r, !ct.expected, ct.expected)
}
}
}
var makeFieldsInput = func() []byte {
x := make([]byte, 1<<20)
// Input is ~10% space, ~10% 2-byte UTF-8, rest ASCII non-space.