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// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package utils
import (
"bytes"
"image"
"image/color"
"image/gif"
"image/jpeg"
"image/png"
"testing"
)
func CreateTestGif(t *testing.T, width int, height int) []byte {
var buffer bytes.Buffer
if err := gif.Encode(&buffer, image.NewRGBA(image.Rect(0, 0, width, height)), nil); err != nil {
t.Fatalf("failed to create gif: %v", err.Error())
}
return buffer.Bytes()
}
func CreateTestAnimatedGif(t *testing.T, width int, height int, frames int) []byte {
var buffer bytes.Buffer
img := gif.GIF{
Image: make([]*image.Paletted, frames),
Delay: make([]int, frames),
}
for i := 0; i < frames; i++ {
img.Image[i] = image.NewPaletted(image.Rect(0, 0, width, height), color.Palette{color.Black})
img.Delay[i] = 0
}
if err := gif.EncodeAll(&buffer, &img); err != nil {
t.Fatalf("failed to create animated gif: %v", err.Error())
}
return buffer.Bytes()
}
func CreateTestJpeg(t *testing.T, width int, height int) []byte {
var buffer bytes.Buffer
if err := jpeg.Encode(&buffer, image.NewRGBA(image.Rect(0, 0, width, height)), nil); err != nil {
t.Fatalf("failed to create jpeg: %v", err.Error())
}
return buffer.Bytes()
}
func CreateTestPng(t *testing.T, width int, height int) []byte {
var buffer bytes.Buffer
if err := png.Encode(&buffer, image.NewRGBA(image.Rect(0, 0, width, height))); err != nil {
t.Fatalf("failed to create png: %v", err.Error())
}
return buffer.Bytes()
}
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