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|
package color
import (
"bytes"
"fmt"
"os"
"testing"
"github.com/mattn/go-colorable"
)
// Testing colors is kinda different. First we test for given colors and their
// escaped formatted results. Next we create some visual tests to be tested.
// Each visual test includes the color name to be compared.
func TestColor(t *testing.T) {
rb := new(bytes.Buffer)
Output = rb
NoColor = false
testColors := []struct {
text string
code Attribute
}{
{text: "black", code: FgBlack},
{text: "red", code: FgRed},
{text: "green", code: FgGreen},
{text: "yellow", code: FgYellow},
{text: "blue", code: FgBlue},
{text: "magent", code: FgMagenta},
{text: "cyan", code: FgCyan},
{text: "white", code: FgWhite},
{text: "hblack", code: FgHiBlack},
{text: "hred", code: FgHiRed},
{text: "hgreen", code: FgHiGreen},
{text: "hyellow", code: FgHiYellow},
{text: "hblue", code: FgHiBlue},
{text: "hmagent", code: FgHiMagenta},
{text: "hcyan", code: FgHiCyan},
{text: "hwhite", code: FgHiWhite},
}
for _, c := range testColors {
New(c.code).Print(c.text)
line, _ := rb.ReadString('\n')
scannedLine := fmt.Sprintf("%q", line)
colored := fmt.Sprintf("\x1b[%dm%s\x1b[0m", c.code, c.text)
escapedForm := fmt.Sprintf("%q", colored)
fmt.Printf("%s\t: %s\n", c.text, line)
if scannedLine != escapedForm {
t.Errorf("Expecting %s, got '%s'\n", escapedForm, scannedLine)
}
}
for _, c := range testColors {
line := New(c.code).Sprintf("%s", c.text)
scannedLine := fmt.Sprintf("%q", line)
colored := fmt.Sprintf("\x1b[%dm%s\x1b[0m", c.code, c.text)
escapedForm := fmt.Sprintf("%q", colored)
fmt.Printf("%s\t: %s\n", c.text, line)
if scannedLine != escapedForm {
t.Errorf("Expecting %s, got '%s'\n", escapedForm, scannedLine)
}
}
}
func TestColorEquals(t *testing.T) {
fgblack1 := New(FgBlack)
fgblack2 := New(FgBlack)
bgblack := New(BgBlack)
fgbgblack := New(FgBlack, BgBlack)
fgblackbgred := New(FgBlack, BgRed)
fgred := New(FgRed)
bgred := New(BgRed)
if !fgblack1.Equals(fgblack2) {
t.Error("Two black colors are not equal")
}
if fgblack1.Equals(bgblack) {
t.Error("Fg and bg black colors are equal")
}
if fgblack1.Equals(fgbgblack) {
t.Error("Fg black equals fg/bg black color")
}
if fgblack1.Equals(fgred) {
t.Error("Fg black equals Fg red")
}
if fgblack1.Equals(bgred) {
t.Error("Fg black equals Bg red")
}
if fgblack1.Equals(fgblackbgred) {
t.Error("Fg black equals fg black bg red")
}
}
func TestNoColor(t *testing.T) {
rb := new(bytes.Buffer)
Output = rb
testColors := []struct {
text string
code Attribute
}{
{text: "black", code: FgBlack},
{text: "red", code: FgRed},
{text: "green", code: FgGreen},
{text: "yellow", code: FgYellow},
{text: "blue", code: FgBlue},
{text: "magent", code: FgMagenta},
{text: "cyan", code: FgCyan},
{text: "white", code: FgWhite},
{text: "hblack", code: FgHiBlack},
{text: "hred", code: FgHiRed},
{text: "hgreen", code: FgHiGreen},
{text: "hyellow", code: FgHiYellow},
{text: "hblue", code: FgHiBlue},
{text: "hmagent", code: FgHiMagenta},
{text: "hcyan", code: FgHiCyan},
{text: "hwhite", code: FgHiWhite},
}
for _, c := range testColors {
p := New(c.code)
p.DisableColor()
p.Print(c.text)
line, _ := rb.ReadString('\n')
if line != c.text {
t.Errorf("Expecting %s, got '%s'\n", c.text, line)
}
}
// global check
NoColor = true
t.Cleanup(func() {
NoColor = false
})
for _, c := range testColors {
p := New(c.code)
p.Print(c.text)
line, _ := rb.ReadString('\n')
if line != c.text {
t.Errorf("Expecting %s, got '%s'\n", c.text, line)
}
}
}
func TestNoColor_Env(t *testing.T) {
rb := new(bytes.Buffer)
Output = rb
testColors := []struct {
text string
code Attribute
}{
{text: "black", code: FgBlack},
{text: "red", code: FgRed},
{text: "green", code: FgGreen},
{text: "yellow", code: FgYellow},
{text: "blue", code: FgBlue},
{text: "magent", code: FgMagenta},
{text: "cyan", code: FgCyan},
{text: "white", code: FgWhite},
{text: "hblack", code: FgHiBlack},
{text: "hred", code: FgHiRed},
{text: "hgreen", code: FgHiGreen},
{text: "hyellow", code: FgHiYellow},
{text: "hblue", code: FgHiBlue},
{text: "hmagent", code: FgHiMagenta},
{text: "hcyan", code: FgHiCyan},
{text: "hwhite", code: FgHiWhite},
}
os.Setenv("NO_COLOR", "")
t.Cleanup(func() {
os.Unsetenv("NO_COLOR")
})
for _, c := range testColors {
p := New(c.code)
p.Print(c.text)
line, _ := rb.ReadString('\n')
if line != c.text {
t.Errorf("Expecting %s, got '%s'\n", c.text, line)
}
}
}
func TestColorVisual(t *testing.T) {
// First Visual Test
Output = colorable.NewColorableStdout()
New(FgRed).Printf("red\t")
New(BgRed).Print(" ")
New(FgRed, Bold).Println(" red")
New(FgGreen).Printf("green\t")
New(BgGreen).Print(" ")
New(FgGreen, Bold).Println(" green")
New(FgYellow).Printf("yellow\t")
New(BgYellow).Print(" ")
New(FgYellow, Bold).Println(" yellow")
New(FgBlue).Printf("blue\t")
New(BgBlue).Print(" ")
New(FgBlue, Bold).Println(" blue")
New(FgMagenta).Printf("magenta\t")
New(BgMagenta).Print(" ")
New(FgMagenta, Bold).Println(" magenta")
New(FgCyan).Printf("cyan\t")
New(BgCyan).Print(" ")
New(FgCyan, Bold).Println(" cyan")
New(FgWhite).Printf("white\t")
New(BgWhite).Print(" ")
New(FgWhite, Bold).Println(" white")
fmt.Println("")
// Second Visual test
Black("black")
Red("red")
Green("green")
Yellow("yellow")
Blue("blue")
Magenta("magenta")
Cyan("cyan")
White("white")
HiBlack("hblack")
HiRed("hred")
HiGreen("hgreen")
HiYellow("hyellow")
HiBlue("hblue")
HiMagenta("hmagenta")
HiCyan("hcyan")
HiWhite("hwhite")
// Third visual test
fmt.Println()
Set(FgBlue)
fmt.Println("is this blue?")
Unset()
Set(FgMagenta)
fmt.Println("and this magenta?")
Unset()
// Fourth Visual test
fmt.Println()
blue := New(FgBlue).PrintlnFunc()
blue("blue text with custom print func")
red := New(FgRed).PrintfFunc()
red("red text with a printf func: %d\n", 123)
put := New(FgYellow).SprintFunc()
warn := New(FgRed).SprintFunc()
fmt.Fprintf(Output, "this is a %s and this is %s.\n", put("warning"), warn("error"))
info := New(FgWhite, BgGreen).SprintFunc()
fmt.Fprintf(Output, "this %s rocks!\n", info("package"))
notice := New(FgBlue).FprintFunc()
notice(os.Stderr, "just a blue notice to stderr")
// Fifth Visual Test
fmt.Println()
fmt.Fprintln(Output, BlackString("black"))
fmt.Fprintln(Output, RedString("red"))
fmt.Fprintln(Output, GreenString("green"))
fmt.Fprintln(Output, YellowString("yellow"))
fmt.Fprintln(Output, BlueString("blue"))
fmt.Fprintln(Output, MagentaString("magenta"))
fmt.Fprintln(Output, CyanString("cyan"))
fmt.Fprintln(Output, WhiteString("white"))
fmt.Fprintln(Output, HiBlackString("hblack"))
fmt.Fprintln(Output, HiRedString("hred"))
fmt.Fprintln(Output, HiGreenString("hgreen"))
fmt.Fprintln(Output, HiYellowString("hyellow"))
fmt.Fprintln(Output, HiBlueString("hblue"))
fmt.Fprintln(Output, HiMagentaString("hmagenta"))
fmt.Fprintln(Output, HiCyanString("hcyan"))
fmt.Fprintln(Output, HiWhiteString("hwhite"))
}
func TestNoFormat(t *testing.T) {
fmt.Printf("%s %%s = ", BlackString("Black"))
Black("%s")
fmt.Printf("%s %%s = ", RedString("Red"))
Red("%s")
fmt.Printf("%s %%s = ", GreenString("Green"))
Green("%s")
fmt.Printf("%s %%s = ", YellowString("Yellow"))
Yellow("%s")
fmt.Printf("%s %%s = ", BlueString("Blue"))
Blue("%s")
fmt.Printf("%s %%s = ", MagentaString("Magenta"))
Magenta("%s")
fmt.Printf("%s %%s = ", CyanString("Cyan"))
Cyan("%s")
fmt.Printf("%s %%s = ", WhiteString("White"))
White("%s")
fmt.Printf("%s %%s = ", HiBlackString("HiBlack"))
HiBlack("%s")
fmt.Printf("%s %%s = ", HiRedString("HiRed"))
HiRed("%s")
fmt.Printf("%s %%s = ", HiGreenString("HiGreen"))
HiGreen("%s")
fmt.Printf("%s %%s = ", HiYellowString("HiYellow"))
HiYellow("%s")
fmt.Printf("%s %%s = ", HiBlueString("HiBlue"))
HiBlue("%s")
fmt.Printf("%s %%s = ", HiMagentaString("HiMagenta"))
HiMagenta("%s")
fmt.Printf("%s %%s = ", HiCyanString("HiCyan"))
HiCyan("%s")
fmt.Printf("%s %%s = ", HiWhiteString("HiWhite"))
HiWhite("%s")
}
func TestNoFormatString(t *testing.T) {
tests := []struct {
f func(string, ...interface{}) string
format string
args []interface{}
want string
}{
{BlackString, "%s", nil, "\x1b[30m%s\x1b[0m"},
{RedString, "%s", nil, "\x1b[31m%s\x1b[0m"},
{GreenString, "%s", nil, "\x1b[32m%s\x1b[0m"},
{YellowString, "%s", nil, "\x1b[33m%s\x1b[0m"},
{BlueString, "%s", nil, "\x1b[34m%s\x1b[0m"},
{MagentaString, "%s", nil, "\x1b[35m%s\x1b[0m"},
{CyanString, "%s", nil, "\x1b[36m%s\x1b[0m"},
{WhiteString, "%s", nil, "\x1b[37m%s\x1b[0m"},
{HiBlackString, "%s", nil, "\x1b[90m%s\x1b[0m"},
{HiRedString, "%s", nil, "\x1b[91m%s\x1b[0m"},
{HiGreenString, "%s", nil, "\x1b[92m%s\x1b[0m"},
{HiYellowString, "%s", nil, "\x1b[93m%s\x1b[0m"},
{HiBlueString, "%s", nil, "\x1b[94m%s\x1b[0m"},
{HiMagentaString, "%s", nil, "\x1b[95m%s\x1b[0m"},
{HiCyanString, "%s", nil, "\x1b[96m%s\x1b[0m"},
{HiWhiteString, "%s", nil, "\x1b[97m%s\x1b[0m"},
}
for i, test := range tests {
s := fmt.Sprintf("%s", test.f(test.format, test.args...))
if s != test.want {
t.Errorf("[%d] want: %q, got: %q", i, test.want, s)
}
}
}
|
