37 lines
1000 B
Go
37 lines
1000 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
|
|
// SPDX-License-Identifier: BSD-3-Clause
|
|
|
|
package truncate_test
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"tailscale.com/util/truncate"
|
|
)
|
|
|
|
func TestString(t *testing.T) {
|
|
tests := []struct {
|
|
input string
|
|
size int
|
|
want string
|
|
}{
|
|
{"", 1000, ""}, // n > length
|
|
{"abc", 4, "abc"}, // n > length
|
|
{"abc", 3, "abc"}, // n == length
|
|
{"abcdefg", 4, "abcd"}, // n < length, safe
|
|
{"abcdefg", 0, ""}, // n < length, safe
|
|
{"abc\U0001fc2d", 3, "abc"}, // n < length, at boundary
|
|
{"abc\U0001fc2d", 4, "abc"}, // n < length, mid-rune
|
|
{"abc\U0001fc2d", 5, "abc"}, // n < length, mid-rune
|
|
{"abc\U0001fc2d", 6, "abc"}, // n < length, mid-rune
|
|
{"abc\U0001fc2defg", 7, "abc"}, // n < length, cut multibyte
|
|
}
|
|
|
|
for _, tc := range tests {
|
|
got := truncate.String(tc.input, tc.size)
|
|
if got != tc.want {
|
|
t.Errorf("truncate(%q, %d): got %q, want %q", tc.input, tc.size, got, tc.want)
|
|
}
|
|
}
|
|
}
|