Changes to src/util/util_test.go. All files

src/util/util_test.go

@@ -109,6 +109,27 @@ func TestRepeatToFill(t *testing.T) { 	if RepeatToFill("abcde", 10, 42) != strings.Repeat("abcde", 4)+"abcde"[:2] { 		t.Error("Expected:", strings.Repeat("abcde", 4)+"abcde"[:2]) 	}++	// Should not cut a grapheme cluster in half+	for _, test := range []struct {+		str      string+		limit    int+		expected string+	}{+		{"a\u0301b", 1, "a\u0301"},+		{"a\u0301b", 3, "a\u0301ba\u0301"},+		{"a\u0301b", 4, "a\u0301ba\u0301b"},+		{"a\u4e00", 2, "a"},+		{"a\u4e00", 4, "a\u4e00a"},+		{"-\U0001f468\u200d\U0001f469\u200d\U0001f467", 1, "-"},+		{"-\U0001f468\u200d\U0001f469\u200d\U0001f467", 2, "-"},+		{"-\U0001f468\u200d\U0001f469\u200d\U0001f467", 4, "-\U0001f468\u200d\U0001f469\u200d\U0001f467-"},+	} {+		actual := RepeatToFill(test.str, StringWidth(test.str), test.limit)+		if actual != test.expected {+			t.Errorf("Expected: %q, actual: %q", test.expected, actual)+		}+	} }  func TestStringWidth(t *testing.T) {