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package util
import "testing"
func TestMax(t *testing.T) {
if Max(-2, 5) != 5 {
t.Error("Invalid result")
}
}
func TestContrain(t *testing.T) {
if Constrain(-3, -1, 3) != -1 {
t.Error("Expected", -1)
}
if Constrain(2, -1, 3) != 2 {
t.Error("Expected", 2)
}
if Constrain(5, -1, 3) != 3 {
t.Error("Expected", 3)
}
}
func TestOnce(t *testing.T) {
o := Once(false)
if o() {
t.Error("Expected: false")
}
if o() {
t.Error("Expected: false")
}
o = Once(true)
if !o() {
t.Error("Expected: true")
}
if o() {
t.Error("Expected: false")
}
}
func TestRunesWidth(t *testing.T) {
for _, args := range [][]int{
{100, 5, -1},
{3, 4, 3},
{0, 1, 0},
} {
width, overflowIdx := RunesWidth([]rune("hello"), 0, 0, args[0])
if width != args[1] {
t.Errorf("Expected width: %d, actual: %d", args[1], width)
}
if overflowIdx != args[2] {
t.Errorf("Expected overflow index: %d, actual: %d", args[2], overflowIdx)
}
}
}
func TestTruncate(t *testing.T) {
truncated, width := Truncate("가나다라마", 7)
if string(truncated) != "가나다" {
t.Errorf("Expected: 가나다, actual: %s", string(truncated))
}
if width != 6 {
t.Errorf("Expected: 6, actual: %d", width)
}
}
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