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package chroma
import (
"encoding/xml"
"testing"
assert "github.com/alecthomas/assert/v2"
)
func TestStyleInherit(t *testing.T) {
s, err := NewStyle("test", StyleEntries{
Name: "bold #f00",
NameVariable: "#fff",
})
assert.NoError(t, err)
assert.Equal(t, StyleEntry{Colour: 0x1000000, Bold: Yes}, s.Get(NameVariable))
}
func TestStyleColours(t *testing.T) {
s, err := NewStyle("test", StyleEntries{
Name: "#f00 bg:#001 border:#ansiblue",
})
assert.NoError(t, err)
assert.Equal(t, StyleEntry{Colour: 0xff0001, Background: 0x000012, Border: 0x000100}, s.Get(Name))
}
func TestStyleClone(t *testing.T) {
parent, err := NewStyle("test", StyleEntries{
Background: "bg:#ffffff",
})
assert.NoError(t, err)
clone, err := parent.Builder().Add(Comment, "#0f0").Build()
assert.NoError(t, err)
assert.Equal(t, "bg:#ffffff", clone.Get(Background).String())
assert.Equal(t, "#00ff00 bg:#ffffff", clone.Get(Comment).String())
assert.Equal(t, "bg:#ffffff", parent.Get(Comment).String())
}
func TestSynthesisedStyleEntries(t *testing.T) {
style, err := NewStyle("test", StyleEntries{
Background: "bg:#ffffff",
})
assert.NoError(t, err)
assert.True(t, style.Has(LineHighlight))
assert.True(t, style.Has(LineNumbersTable))
assert.True(t, style.Has(LineNumbers))
assert.Equal(t, "bg:#e5e5e5", style.Get(LineHighlight).String())
assert.Equal(t, "#7f7f7f bg:#ffffff", style.Get(LineNumbers).String())
assert.Equal(t, "#7f7f7f bg:#ffffff", style.Get(LineNumbersTable).String())
}
func TestSynthesisedStyleClone(t *testing.T) {
style, err := NewStyle("test", StyleEntries{
Background: "bg:#ffffff",
LineHighlight: "bg:#ffffff",
LineNumbers: "bg:#fffff1",
})
assert.NoError(t, err)
style, err = style.Builder().Build()
assert.NoError(t, err)
assert.True(t, style.Has(LineHighlight))
assert.True(t, style.Has(LineNumbers))
assert.Equal(t, "bg:#ffffff", style.Get(LineHighlight).String())
assert.Equal(t, "bg:#fffff1", style.Get(LineNumbers).String())
}
func TestStyleBuilderTransform(t *testing.T) {
orig, err := NewStyle("test", StyleEntries{
Name: "#000",
NameVariable: "bold #f00",
})
assert.NoError(t, err)
// Derive a style that inherits entries from orig.
builder := orig.Builder()
builder.Add(NameVariableGlobal, "#f30")
deriv, err := builder.Build()
assert.NoError(t, err)
// Use Transform to brighten or darken all of the colours in the derived style.
light, err := deriv.Builder().Transform(func(se StyleEntry) StyleEntry {
se.Colour = se.Colour.ClampBrightness(0.9, 1)
return se
}).Build()
assert.NoError(t, err, "Transform failed: %v", err)
assert.True(t, light.Get(Name).Colour.Brightness() >= 0.89)
assert.True(t, light.Get(NameVariable).Colour.Brightness() >= 0.89)
assert.True(t, light.Get(NameVariableGlobal).Colour.Brightness() >= 0.89)
dark, err := deriv.Builder().Transform(func(se StyleEntry) StyleEntry {
se.Colour = se.Colour.ClampBrightness(0, 0.1)
return se
}).Build()
assert.NoError(t, err, "Transform failed: %v", err)
assert.True(t, dark.Get(Name).Colour.Brightness() <= 0.11)
assert.True(t, dark.Get(NameVariable).Colour.Brightness() <= 0.11)
assert.True(t, dark.Get(NameVariableGlobal).Colour.Brightness() <= 0.11)
// The original styles should be unchanged.
assert.Equal(t, "#000000", orig.Get(Name).Colour.String())
assert.Equal(t, "#ff0000", orig.Get(NameVariable).Colour.String())
assert.Equal(t, "#ff3300", deriv.Get(NameVariableGlobal).Colour.String())
}
func TestStyleMarshaller(t *testing.T) {
expected, err := NewStyle("test", StyleEntries{
Whitespace: "bg:#ffffff",
Text: "#000000 underline",
})
assert.NoError(t, err)
data, err := xml.MarshalIndent(expected, "", " ")
assert.NoError(t, err)
assert.Equal(t, `<style name="test">
<entry type="Text" style="underline #000000"></entry>
<entry type="TextWhitespace" style="bg:#ffffff"></entry>
</style>`, string(data))
actual := &Style{}
err = xml.Unmarshal(data, actual)
assert.NoError(t, err)
assert.Equal(t, expected, actual)
}
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