Tests.

internal/zenutil/color_test.go

@@ -7,6 +7,36 @@ import (
 	"golang.org/x/image/colornames"
 )
 
+func TestColorEquals(t *testing.T) {
+	if ColorEquals(nil, nil) == false {
+		t.Error("ColorEquals(nil, nil) == false")
+	}
+	if ColorEquals(nil, color.Black) == true {
+		t.Error("ColorEquals(nil, color.Black) == true")
+	}
+	if ColorEquals(color.Black, nil) == true {
+		t.Error("ColorEquals(color.Black, nil) == true")
+	}
+	if ColorEquals(color.Black, color.Black) == false {
+		t.Error("ColorEquals(color.Black, color.Black) == false")
+	}
+	if ColorEquals(color.Black, color.White) == true {
+		t.Error("ColorEquals(color.Black, color.White) == true")
+	}
+	if ColorEquals(color.Black, colornames.Red) == true {
+		t.Error("ColorEquals(color.Black, colornames.Red) == true")
+	}
+	if ColorEquals(color.Black, colornames.Green) == true {
+		t.Error("ColorEquals(color.Black, colornames.Green) == true")
+	}
+	if ColorEquals(color.Black, colornames.Blue) == true {
+		t.Error("ColorEquals(color.Black, colornames.Blue) == true")
+	}
+	if ColorEquals(color.Black, color.Transparent) == true {
+		t.Error("ColorEquals(color.Black, color.Transparent) == true")
+	}
+}
+
 func TestColor_names(t *testing.T) {
 	for _, name := range colornames.Names {
 		c1 := colornames.Map[name]
@@ -60,6 +90,7 @@ var colorTests = []struct {
 	{"rgba(128,128,128,0)", color.NRGBA{0x80, 0x80, 0x80, 0x00}},
 	{"rgba(128,128,128,1)", color.NRGBA{0x80, 0x80, 0x80, 0xff}},
 	{"rgba(128,128,128,0.0)", color.NRGBA{0x80, 0x80, 0x80, 0x00}},
+	{"rgba(128,128,128,0.5)", color.NRGBA{0x80, 0x80, 0x80, 0x80}},
 	{"rgba(128,128,128,1.0)", color.NRGBA{0x80, 0x80, 0x80, 0xff}},
 	{"not a color", nil},
 	{"", nil},
@@ -80,7 +111,7 @@ var colorTests = []struct {
 	{"rgba(128,128,128)", nil},
 }
 
-func TestColor_strings(t *testing.T) {
+func TestParseColor(t *testing.T) {
 	for _, test := range colorTests {
 		c := ParseColor(test.data)
 		if !ColorEquals(c, test.want) {

internal/zenutil/unescape.go

@@ -18,7 +18,7 @@ func Unescape(s string) string {
 	state := initial
 	for _, b := range []byte(s) {
 		switch state {
-		case initial:
+		default:
 			switch b {
 			case '\\':
 				state = escape1

internal/zenutil/unescape_test.go

@@ -10,6 +10,7 @@ var unescapeTests = []struct {
 }{
 	{``, ""},
 	{`abc`, "abc"},
+	{`abc\`, "abc"},
 	{`ab\c`, "abc"},
 	{`a\bc`, "a\bc"},
 	{`abc\f`, "abc\f"},
@@ -20,6 +21,9 @@ var unescapeTests = []struct {
 	{`a\1c`, "a\001c"},
 	{`a\12c`, "a\012c"},
 	{`a\123c`, "a\123c"},
+	{`a\1\c`, "a\001c"},
+	{`a\12\c`, "a\012c"},
+	{`a\123\c`, "a\123c"},
 	{`a\1\b`, "a\001\b"},
 	{`a\12\b`, "a\012\b"},
 	{`a\123\b`, "a\123\b"},
@@ -27,13 +31,16 @@ var unescapeTests = []struct {
 	{`abc\12`, "abc\012"},
 	{`abc\123`, "abc\123"},
 	{`abc\1234`, "abc\1234"},
-	{`abc\001`, "abc\001"},
-	{`abc\012`, "abc\012"},
-	{`abc\123`, "abc\123"},
-	{`abc\4`, "abc\004"},
-	{`abc\45`, "abc\045"},
-	{`abc\456`, "abc\056"},
+	{`abc\0123`, "abc\0123"},
+	{`abc\0012`, "abc\0012"},
 	{`abc\4567`, "abc\0567"},
+	{`abc\5678`, "abc\1678"},
+	{`abc\6789`, "abc\06789"},
+	{`abc\7890`, "abc\007890"},
+	{"ab\xcdef", "ab\xcdef"},
+	{"ab\\\xcdef", "ab\xcdef"},
+	{"ab\xcd\\ef", "ab\xcdef"},
+	{"ab\\0\xcdef", "ab\000\xcdef"},
 }
 
 func TestUnescape(t *testing.T) {