136 lines
2.5 KiB
Go
136 lines
2.5 KiB
Go
package images
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import (
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"errors"
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"image"
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"testing"
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"github.com/stretchr/testify/require"
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)
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const (
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path = "../_assets/tests/"
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)
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var (
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testJpegBytes = []byte{0xff, 0xd8, 0xff, 0xdb, 0x00, 0x84, 0x00, 0x50, 0x37, 0x3c, 0x46, 0x3c, 0x32, 0x50}
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testPngBytes = []byte{0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d, 0x49, 0x48}
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testGifBytes = []byte{0x47, 0x49, 0x46, 0x38, 0x39, 0x61, 0x00, 0x01, 0x00, 0x01, 0x84, 0x1f, 0x00, 0xff}
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testWebpBytes = []byte{0x52, 0x49, 0x46, 0x46, 0x90, 0x49, 0x00, 0x00, 0x57, 0x45, 0x42, 0x50, 0x56, 0x50}
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testAacBytes = []byte{0xff, 0xf1, 0x50, 0x80, 0x1c, 0x3f, 0xfc, 0xda, 0x00, 0x4c, 0x61, 0x76, 0x63, 0x35}
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)
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func TestDecode(t *testing.T) {
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cs := []struct {
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Filepath string
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Error bool
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Nil bool
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Bounds image.Rectangle
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}{
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{
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"elephant.jpg",
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false,
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false,
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image.Rectangle{
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Min: image.Point{X: 0, Y: 0},
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Max: image.Point{X: 80, Y: 80},
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},
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},
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{
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"status.png",
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false,
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false,
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image.Rectangle{
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Min: image.Point{X: 0, Y: 0},
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Max: image.Point{X: 256, Y: 256},
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},
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},
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{
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"spin.gif",
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false,
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false,
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image.Rectangle{
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Min: image.Point{X: 0, Y: 0},
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Max: image.Point{X: 256, Y: 256},
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},
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},
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{
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"rose.webp",
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false,
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false,
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image.Rectangle{
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Min: image.Point{X: 0, Y: 0},
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Max: image.Point{X: 400, Y: 301},
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},
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},
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{
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"test.aac",
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true,
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true,
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image.Rectangle{},
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},
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}
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for _, c := range cs {
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img, err := Decode(path + c.Filepath)
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if c.Error {
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require.Error(t, err)
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} else {
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require.NoError(t, err)
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}
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if c.Nil {
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require.Nil(t, img)
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continue
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} else {
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require.NotNil(t, img)
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}
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require.Exactly(t, c.Bounds, img.Bounds())
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}
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}
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func TestGetType(t *testing.T) {
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cs := []struct{
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Buf []byte
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Value ImageType
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}{
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{testJpegBytes, JPEG},
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{testPngBytes, PNG},
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{testGifBytes, GIF},
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{testWebpBytes, WEBP},
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{testAacBytes, UNKNOWN},
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}
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for _, c := range cs {
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require.Exactly(t, c.Value, GetType(c.Buf))
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}
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}
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func TestGetMimeType(t *testing.T) {
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cs := []struct{
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Buf []byte
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Value string
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Error error
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}{
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{testJpegBytes, "jpeg", nil},
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{testPngBytes, "png", nil},
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{testGifBytes, "gif", nil},
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{testWebpBytes, "webp", nil},
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{testAacBytes, "", errors.New("image format not supported")},
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}
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for _, c := range cs {
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mt, err := GetMimeType(c.Buf)
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if c.Error == nil {
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require.NoError(t, err)
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} else {
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require.EqualError(t, err, c.Error.Error())
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}
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require.Exactly(t, c.Value, mt)
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}
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}
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