Improve tests.

internal/zenutil/color_test.go

@@ -8,21 +8,12 @@ import (
 )
 
 func TestColor_names(t *testing.T) {
-	tests := []string{
+	for _, name := range colornames.Names {
-		"chocolate",
+		c1 := colornames.Map[name]
-		"lime",
+		c2 := ParseColor(name)
-		"olive",
-		"orange",
-		"plum",
-		"salmon",
-		"tomato",
-	}
-	for _, test := range tests {
-		c1 := colornames.Map[test]
-		c2 := ParseColor(test)
 		c3 := ParseColor(UnparseColor(c1))
 		if !ColorEquals(c1, c2) {
-			t.Errorf("ParseColor(%s) = %v; want %v", test, c2, c1)
+			t.Errorf("ParseColor(%q) = %v; want %v", name, c2, c1)
 		}
 		if !ColorEquals(c1, c3) {
 			t.Errorf("ParseColor(UnparseColor(%v)) = %v; want %v", c1, c3, c1)
@@ -31,25 +22,24 @@ func TestColor_names(t *testing.T) {
 }
 
 func TestColor_colors(t *testing.T) {
-	tests := []color.Color{
+	colors := []color.Color{
 		color.Black,
 		color.White,
 		color.Opaque,
 		color.Transparent,
 	}
-	for _, test := range tests {
+	for _, color := range colors {
-		c := ParseColor(UnparseColor(test))
+		c := ParseColor(UnparseColor(color))
-		if !ColorEquals(c, test) {
+		if !ColorEquals(c, color) {
-			t.Errorf("ParseColor(UnparseColor(%v)) = %v; want %v", test, c, test)
+			t.Errorf("ParseColor(UnparseColor(%v)) = %v; want %v", color, c, color)
 		}
 	}
 }
 
-func TestColor_strings(t *testing.T) {
+var colorTests = []struct {
-	tests := []struct {
 	data string
 	want color.Color
-	}{
+}{
 	{"#000", color.Black},
 	{"#000f", color.Black},
 	{"#000000", color.Black},
@@ -72,6 +62,7 @@ func TestColor_strings(t *testing.T) {
 	{"rgba(128,128,128,0.0)", color.NRGBA{0x80, 0x80, 0x80, 0x00}},
 	{"rgba(128,128,128,1.0)", color.NRGBA{0x80, 0x80, 0x80, 0xff}},
 	{"not a color", nil},
+	{"", nil},
 	{"#0", nil},
 	{"#00", nil},
 	{"#000", color.Black},
@@ -87,54 +78,21 @@ func TestColor_strings(t *testing.T) {
 	{"rgb(127.5,127.5,127.5)", nil},
 	{"rgba(127.5,127.5,127.5,0.5)", nil},
 	{"rgba(128,128,128)", nil},
-	}
+}
-	for _, test := range tests {
+
+func TestColor_strings(t *testing.T) {
+	for _, test := range colorTests {
 		c := ParseColor(test.data)
 		if !ColorEquals(c, test.want) {
-			t.Errorf("ParseColor(%s) = %v; want %v", test.data, c, test.want)
+			t.Errorf("ParseColor(%q) = %v; want %v", test.data, c, test.want)
 		}
 	}
 }
 
 func FuzzParseColor(f *testing.F) {
-	f.Add("#000")
+	for _, test := range colorTests {
-	f.Add("#000f")
+		f.Add(test.data)
-	f.Add("#000000")
+	}
-	f.Add("#000000ff")
-	f.Add("#fff")
-	f.Add("#ffff")
-	f.Add("#ffffff")
-	f.Add("#ffffffff")
-	f.Add("#FFF")
-	f.Add("#FFFF")
-	f.Add("#FFFFFF")
-	f.Add("#FFFFFFFF")
-	f.Add("#0")
-	f.Add("#00")
-	f.Add("#000")
-	f.Add("#0000")
-	f.Add("#00000")
-	f.Add("#000000")
-	f.Add("#0000000")
-	f.Add("#00000000")
-	f.Add("#000000000")
-	f.Add("#8888")
-	f.Add("#80808080")
-	f.Add("rgb(-1,-1,-1)")
-	f.Add("rgb(128,128,128)")
-	f.Add("rgb(256,256,256)")
-	f.Add("rgb(128,128,128,0.5)")
-	f.Add("rgb(127.5,127.5,127.5)")
-	f.Add("rgba(128,128,128)")
-	f.Add("rgba(128,128,128,0)")
-	f.Add("rgba(128,128,128,1)")
-	f.Add("rgba(128,128,128,0.0)")
-	f.Add("rgba(128,128,128,0.5)")
-	f.Add("rgba(128,128,128,1.0)")
-	f.Add("rgba(127.5,127.5,127.5,0.5)")
-	f.Add("not a color")
-	f.Add("")
-
 	for _, name := range colornames.Names {
 		f.Add(name)
 	}

internal/zenutil/unescape.go

@@ -3,7 +3,7 @@ package zenutil
 // Unescape is internal.
 func Unescape(s string) string {
 	// Apply rules described in:
-	// https://developer.gnome.org/glib/stable/glib-String-Utility-Functions.html#g-strescape
+	// https://docs.gtk.org/glib/func.strescape.html
 
 	const (
 		initial = iota

internal/zenutil/unescape_test.go

@@ -4,11 +4,11 @@ import (
 	"testing"
 )
 
-func TestUnescape(t *testing.T) {
+var unescapeTests = []struct {
-	tests := []struct {
 	data string
 	want string
-	}{
+}{
+	{``, ""},
 	{`abc`, "abc"},
 	{`ab\c`, "abc"},
 	{`a\bc`, "a\bc"},
@@ -26,32 +26,29 @@ func TestUnescape(t *testing.T) {
 	{`abc\1`, "abc\001"},
 	{`abc\12`, "abc\012"},
 	{`abc\123`, "abc\123"},
-	}
+	{`abc\1234`, "abc\1234"},
-	for _, tt := range tests {
+	{`abc\001`, "abc\001"},
-		if got := Unescape(tt.data); got != tt.want {
+	{`abc\012`, "abc\012"},
-			t.Errorf("Unescape(%q) = %q; want %q", tt.data, got, tt.want)
+	{`abc\123`, "abc\123"},
+	{`abc\4`, "abc\004"},
+	{`abc\45`, "abc\045"},
+	{`abc\456`, "abc\056"},
+	{`abc\4567`, "abc\0567"},
+}
+
+func TestUnescape(t *testing.T) {
+	for _, test := range unescapeTests {
+		if got := Unescape(test.data); got != test.want {
+			t.Errorf("Unescape(%q) = %q; want %q", test.data, got, test.want)
 		}
 	}
 }
 
 func FuzzUnescape(f *testing.F) {
-	f.Add(`abc`)
+	for _, test := range unescapeTests {
-	f.Add(`ab\c`)
+		f.Add(test.data)
-	f.Add(`a\bc`)
+	}
-	f.Add(`abc\f`)
+
-	f.Add(`abc\n`)
-	f.Add(`abc\r`)
-	f.Add(`abc\t`)
-	f.Add(`abc\v`)
-	f.Add(`a\1c`)
-	f.Add(`a\12c`)
-	f.Add(`a\123c`)
-	f.Add(`a\1\b`)
-	f.Add(`a\12\b`)
-	f.Add(`a\123\b`)
-	f.Add(`abc\1`)
-	f.Add(`abc\12`)
-	f.Add(`abc\123`)
 	f.Fuzz(func(t *testing.T, e string) {
 		u := Unescape(e)
 		switch {