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d511e50652
As neeed. This enables you to view 24 bit color documents in a 256 color terminal. With reduced quality obviously, but still.
48 lines
1.1 KiB
Go
48 lines
1.1 KiB
Go
package twin
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import (
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"testing"
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"gotest.tools/v3/assert"
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)
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func TestColorRgbFirst16(t *testing.T) {
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r, g, b := color256ToRGB(5)
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assert.Equal(t, r, float64(0x80)/255.0)
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assert.Equal(t, g, float64(0x00)/255.0)
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assert.Equal(t, b, float64(0x80)/255.0)
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}
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func TestColorToRgbInTheGrey(t *testing.T) {
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r, g, b := color256ToRGB(252)
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assert.Equal(t, r, float64(0xd0)/255.0)
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assert.Equal(t, g, float64(0xd0)/255.0)
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assert.Equal(t, b, float64(0xd0)/255.0)
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}
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func TestColorToRgbInThe6x6Cube(t *testing.T) {
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r, g, b := color256ToRGB(101)
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assert.Equal(t, r, float64(0x87)/255.0)
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assert.Equal(t, g, float64(0x87)/255.0)
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assert.Equal(t, b, float64(0x5f)/255.0)
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}
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func TestColorToRgbStart6x6Cube(t *testing.T) {
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r, g, b := color256ToRGB(16)
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assert.Equal(t, r, float64(0x00)/255.0)
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assert.Equal(t, g, float64(0x00)/255.0)
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assert.Equal(t, b, float64(0x00)/255.0)
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}
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func TestColorRgbEnd6x6Cube(t *testing.T) {
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r, g, b := color256ToRGB(231)
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assert.Equal(t, r, float64(0xff)/255.0)
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assert.Equal(t, g, float64(0xff)/255.0)
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assert.Equal(t, b, float64(0xff)/255.0)
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}
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