1 files changed, 55 insertions, 0 deletions
diff --git a/internal/color/color_test.go b/internal/color/color_test.go
new file mode 100644
index 0000000..c1f5e5b
--- /dev/null
+++ b/internal/color/color_test.go
@@ -0,0 +1,55 @@
+package color
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestWrapANSIDisabled(t *testing.T) {
+	s := "this is a very long line that would normally be wrapped if enabled"
+	if got := WrapANSI(s, 0); got != s {
+		t.Errorf("WrapANSI(_, 0) = %q, want unchanged", got)
+	}
+}
+
+func TestWrapANSIShortLineUntouched(t *testing.T) {
+	s := "    indented menu item"
+	if got := WrapANSI(s, 80); got != s {
+		t.Errorf("short line was modified: got %q, want %q", got, s)
+	}
+}
+
+func TestWrapANSIWrapsLongLine(t *testing.T) {
+	s := "alpha bravo charlie delta echo foxtrot golf hotel india juliet"
+	got := WrapANSI(s, 20)
+	lines := strings.Split(got, "\r\n")
+	if len(lines) < 2 {
+		t.Fatalf("expected multiple lines, got %d: %q", len(lines), got)
+	}
+	for _, l := range lines {
+		if VisibleLen(l) > 20 {
+			t.Errorf("line exceeds width: %q (%d)", l, VisibleLen(l))
+		}
+	}
+	if strings.Join(strings.Fields(got), " ") != s {
+		t.Errorf("words not preserved: %q", got)
+	}
+}
+
+func TestWrapANSIIgnoresColorCodes(t *testing.T) {
+	colored := FgCode("xterm256", 182) + "hello world" + Reset
+	if VisibleLen(colored) > 80 {
+		t.Fatalf("test setup wrong, visible len = %d", VisibleLen(colored))
+	}
+	if got := WrapANSI(colored, 80); got != colored {
+		t.Errorf("colored line within width was wrapped: %q", got)
+	}
+}
+
+func TestWrapANSISplitsOnNewlines(t *testing.T) {
+	got := WrapANSI("first line\nsecond line", 80)
+	want := "first line\r\nsecond line"
+	if got != want {
+		t.Errorf("WrapANSI newline handling = %q, want %q", got, want)
+	}
+}