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package wcwidth
import (
"testing"
"src.elv.sh/pkg/tt"
)
var Args = tt.Args
func TestOf(t *testing.T) {
tt.Test(t, Of,
Args("\u0301").Rets(0), // Combining acute accent
Args("a").Rets(1),
Args("Ω").Rets(1),
Args("好").Rets(2),
Args("か").Rets(2),
Args("abc").Rets(3),
Args("你好").Rets(4),
)
}
func TestOverride(t *testing.T) {
r := '❱'
oldw := OfRune(r)
w := oldw + 1
Override(r, w)
if OfRune(r) != w {
t.Errorf("Wcwidth(%q) != %d after OverrideWcwidth", r, w)
}
Unoverride(r)
if OfRune(r) != oldw {
t.Errorf("Wcwidth(%q) != %d after UnoverrideWcwidth", r, oldw)
}
}
func TestOverride_NegativeWidthRemovesOverride(t *testing.T) {
Override('x', 2)
Override('x', -1)
if OfRune('x') != 1 {
t.Errorf("Override with negative width did not remove override")
}
}
func TestConcurrentOverride(t *testing.T) {
go Override('x', 2)
_ = OfRune('x')
}
func TestTrim(t *testing.T) {
tt.Test(t, Trim,
Args("abc", 1).Rets("a"),
Args("abc", 2).Rets("ab"),
Args("abc", 3).Rets("abc"),
Args("abc", 4).Rets("abc"),
Args("你好", 1).Rets(""),
Args("你好", 2).Rets("你"),
Args("你好", 3).Rets("你"),
Args("你好", 4).Rets("你好"),
Args("你好", 5).Rets("你好"),
)
}
func TestForce(t *testing.T) {
tt.Test(t, Force,
// Trimming
Args("abc", 2).Rets("ab"),
Args("你好", 2).Rets("你"),
// Padding
Args("abc", 4).Rets("abc "),
Args("你好", 5).Rets("你好 "),
// Trimming and Padding
Args("你好", 3).Rets("你 "),
)
}
func TestTrimEachLine(t *testing.T) {
tt.Test(t, TrimEachLine,
Args("abcdefg\n你好", 3).Rets("abc\n你"),
)
}
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