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package style
import (
"bytes"
"testing"
"text/template"
"github.com/gookit/color"
"github.com/stretchr/testify/assert"
"github.com/xo/terminfo"
)
func TestMerge(t *testing.T) {
type scenario struct {
name string
toMerge []TextStyle
expectedStyle TextStyle
expectedStr string
}
// on CI we've got no color capability so we're forcing it here
color.ForceSetColorLevel(terminfo.ColorLevelMillions)
fgRed := color.FgRed
bgRed := color.BgRed
fgBlue := color.FgBlue
rgbPinkLib := color.Rgb(0xFF, 0x00, 0xFF)
rgbPink := NewRGBColor(rgbPinkLib)
rgbYellowLib := color.Rgb(0xFF, 0xFF, 0x00)
rgbYellow := NewRGBColor(rgbYellowLib)
strToPrint := "foo"
scenarios := []scenario{
{
"no color",
nil,
TextStyle{style: color.Style{}},
"foo",
},
{
"only fg color",
[]TextStyle{FgRed},
TextStyle{fg: &Color{basic: &fgRed}, style: color.Style{fgRed}},
"\x1b[31mfoo\x1b[0m",
},
{
"only bg color",
[]TextStyle{BgRed},
TextStyle{bg: &Color{basic: &bgRed}, style: color.Style{bgRed}},
"\x1b[41mfoo\x1b[0m",
},
{
"fg and bg color",
[]TextStyle{FgBlue, BgRed},
TextStyle{
fg: &Color{basic: &fgBlue},
bg: &Color{basic: &bgRed},
style: color.Style{fgBlue, bgRed},
},
"\x1b[34;41mfoo\x1b[0m",
},
{
"single attribute",
[]TextStyle{AttrBold},
TextStyle{
decoration: Decoration{bold: true},
style: color.Style{color.OpBold},
},
"\x1b[1mfoo\x1b[0m",
},
{
"multiple attributes",
[]TextStyle{AttrBold, AttrUnderline},
TextStyle{
decoration: Decoration{
bold: true,
underline: true,
},
style: color.Style{color.OpBold, color.OpUnderscore},
},
"\x1b[1;4mfoo\x1b[0m",
},
{
"multiple attributes and colors",
[]TextStyle{AttrBold, FgBlue, AttrUnderline, BgRed},
TextStyle{
fg: &Color{basic: &fgBlue},
bg: &Color{basic: &bgRed},
decoration: Decoration{
bold: true,
underline: true,
},
style: color.Style{fgBlue, bgRed, color.OpBold, color.OpUnderscore},
},
"\x1b[34;41;1;4mfoo\x1b[0m",
},
{
"rgb fg color",
[]TextStyle{New().SetFg(rgbPink)},
TextStyle{
fg: &rgbPink,
style: color.NewRGBStyle(rgbPinkLib).SetOpts(color.Opts{}),
},
// '38;2' qualifies an RGB foreground color
"\x1b[38;2;255;0;255mfoo\x1b[0m",
},
{
"rgb fg and bg color",
[]TextStyle{New().SetFg(rgbPink).SetBg(rgbYellow)},
TextStyle{
fg: &rgbPink,
bg: &rgbYellow,
style: color.NewRGBStyle(rgbPinkLib, rgbYellowLib).SetOpts(color.Opts{}),
},
// '48;2' qualifies an RGB background color
"\x1b[38;2;255;0;255;48;2;255;255;0mfoo\x1b[0m",
},
{
"rgb fg and bg color with opts",
[]TextStyle{AttrBold, New().SetFg(rgbPink).SetBg(rgbYellow), AttrUnderline},
TextStyle{
fg: &rgbPink,
bg: &rgbYellow,
decoration: Decoration{
bold: true,
underline: true,
},
style: color.NewRGBStyle(rgbPinkLib, rgbYellowLib).SetOpts(color.Opts{color.OpBold, color.OpUnderscore}),
},
"\x1b[38;2;255;0;255;48;2;255;255;0;1;4mfoo\x1b[0m",
},
{
"mix color-16 with rgb colors",
[]TextStyle{New().SetFg(rgbYellow), BgRed},
TextStyle{
fg: &rgbYellow,
bg: &Color{basic: &bgRed},
style: color.NewRGBStyle(
rgbYellowLib,
fgRed.RGB(), // We need to use FG here, https://github.com/gookit/color/issues/39
).SetOpts(color.Opts{}),
},
"\x1b[38;2;255;255;0;48;2;197;30;20mfoo\x1b[0m",
},
}
for _, s := range scenarios {
s := s
t.Run(s.name, func(t *testing.T) {
style := New()
for _, other := range s.toMerge {
style = style.MergeStyle(other)
}
assert.Equal(t, s.expectedStyle, style)
assert.Equal(t, s.expectedStr, style.Sprint(strToPrint))
})
}
}
func TestTemplateFuncMapAddColors(t *testing.T) {
type scenario struct {
name string
tmpl string
expect string
}
scenarios := []scenario{
{
"normal template",
"{{ .Foo }}",
"bar",
},
{
"colored string",
"{{ .Foo | red }}",
"\x1b[31mbar\x1b[0m",
},
{
"string with decorator",
"{{ .Foo | bold }}",
"\x1b[1mbar\x1b[0m",
},
{
"string with color and decorator",
"{{ .Foo | bold | red }}",
"\x1b[31m\x1b[1mbar\x1b[0m\x1b[0m",
},
{
"multiple string with different colors",
"{{ .Foo | red }} - {{ .Foo | blue }}",
"\x1b[31mbar\x1b[0m - \x1b[34mbar\x1b[0m",
},
}
for _, s := range scenarios {
s := s
t.Run(s.name, func(t *testing.T) {
tmpl, err := template.New("test template").Funcs(TemplateFuncMapAddColors(template.FuncMap{})).Parse(s.tmpl)
assert.NoError(t, err)
buff := bytes.NewBuffer(nil)
err = tmpl.Execute(buff, struct{ Foo string }{"bar"})
assert.NoError(t, err)
assert.Equal(t, s.expect, buff.String())
})
}
}
|
