func BenchmarkProcessorHighQuality(b *testing.B) {
nim, err := imageserver_image.Decode(testdata.Medium)
if err != nil {
b.Fatal(err)
}
prc := NewProcessor(2.2, true)
params := imageserver.Params{}
b.ResetTimer()
for i := 0; i < b.N; i++ {
prc.Process(nim, params)
}
}
func TestProcessorProcess(t *testing.T) {
nim, err := imageserver_image.Decode(testdata.Medium)
if err != nil {
t.Fatal(err)
}
for _, highQuality := range []bool{false, true} {
prc := NewProcessor(2.2, highQuality)
_, err = prc.Process(nim, imageserver.Params{})
if err != nil {
t.Fatal(err)
}
}
}
// BenchmarkEncoder is a helper to benchmark Encoder.
func BenchmarkEncoder(b *testing.B, enc imageserver_image.Encoder, im *imageserver.Image, params imageserver.Params) {
nim, err := imageserver_image.Decode(im)
if err != nil {
b.Fatal(err)
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
err := enc.Encode(ioutil.Discard, nim, params)
if err != nil {
b.Fatal(err)
}
}
}
func BenchmarkProcessorHighQuality(b *testing.B) {
nim, err := imageserver_image.Decode(testdata.Medium)
if err != nil {
b.Fatal(err)
}
prc := NewProcessor(2.2, true)
params := imageserver.Params{}
b.ResetTimer()
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
prc.Process(nim, params)
}
})
}
// BenchmarkEncoder is a helper to benchmark Encoder.
func BenchmarkEncoder(b *testing.B, enc imageserver_image.Encoder, im *imageserver.Image, params imageserver.Params) {
nim, err := imageserver_image.Decode(im)
if err != nil {
b.Fatal(err)
}
b.ResetTimer()
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
err := enc.Encode(ioutil.Discard, nim, params)
if err != nil {
b.Fatal(err)
}
}
})
}
func BenchmarkCorrectionProcessor(b *testing.B) {
nim, err := imageserver_image.Decode(testdata.Medium)
if err != nil {
b.Fatal(err)
}
prc := NewCorrectionProcessor(
imageserver_image.ProcessorFunc(func(nim image.Image, params imageserver.Params) (image.Image, error) {
return nim, nil
}),
true,
)
params := imageserver.Params{}
for i := 0; i < b.N; i++ {
prc.Process(nim, params)
}
}
func benchmarkRotateProcessor(b *testing.B, params imageserver.Params) {
nim, err := imageserver_image.Decode(testdata.Medium)
if err != nil {
b.Fatal(err)
}
params = imageserver.Params{
rotateParam: params,
}
prc := &RotateProcessor{}
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := prc.Process(nim, params)
if err != nil {
b.Fatal(err)
}
}
}
func BenchmarkCorrectionProcessor(b *testing.B) {
nim, err := imageserver_image.Decode(testdata.Medium)
if err != nil {
b.Fatal(err)
}
prc := NewCorrectionProcessor(
imageserver_image.ProcessorFunc(func(nim image.Image, params imageserver.Params) (image.Image, error) {
return nim, nil
}),
true,
)
params := imageserver.Params{}
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
prc.Process(nim, params)
}
})
}
func benchmark(b *testing.B, im *imageserver.Image, params imageserver.Params) {
nim, err := imageserver_image.Decode(im)
if err != nil {
b.Fatal(err)
}
params.Set("width", 100)
params = imageserver.Params{
Param: params,
}
proc := &Processor{}
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := proc.Process(nim, params)
if err != nil {
b.Fatal(err)
}
}
}
func benchmarkResizeProcessor(b *testing.B, name string, im *imageserver.Image, params imageserver.Params) {
nim, err := imageserver_image.Decode(im)
if err != nil {
b.Fatal(err)
}
params.Set("width", 100)
params = imageserver.Params{
resizeParam: params,
}
prc := &ResizeProcessor{}
b.Run(name, func(b *testing.B) {
for i := 0; i < b.N; i++ {
_, err := prc.Process(nim, params)
if err != nil {
b.Fatal(err)
}
}
})
}
func benchmark(b *testing.B, im *imageserver.Image, params imageserver.Params) {
nim, err := imageserver_image.Decode(im)
if err != nil {
b.Fatal(err)
}
params.Set("width", 100)
params = imageserver.Params{
Param: params,
}
proc := &Processor{}
b.ResetTimer()
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
_, err := proc.Process(nim, params)
if err != nil {
b.Fatal(err)
}
}
})
}
func TestProcessor(t *testing.T) {
nim, err := imageserver_image.Decode(imageserver_testdata.Medium)
if err != nil {
t.Fatal(err)
}
for _, tc := range []struct {
name string
processor *Processor
params imageserver.Params
expectedWidth int
expectedHeight int
expectedParamError string
}{
// no size
{
name: "Empty",
params: imageserver.Params{},
expectedWidth: 1024,
expectedHeight: 819,
},
{
name: "ParamEmpty",
params: imageserver.Params{param: imageserver.Params{}},
expectedWidth: 1024,
expectedHeight: 819,
},
{
name: "SizeZero",
params: imageserver.Params{param: imageserver.Params{
"width": 0,
"height": 0,
}},
expectedWidth: 1024,
expectedHeight: 819,
},
// with size
{
name: "Width",
params: imageserver.Params{param: imageserver.Params{
"width": 100,
}},
expectedWidth: 100,
},
{
name: "Height",
params: imageserver.Params{param: imageserver.Params{
"height": 100,
}},
expectedHeight: 100,
},
{
name: "WidthHeight",
params: imageserver.Params{param: imageserver.Params{
"width": 100,
"height": 100,
}},
expectedWidth: 100,
expectedHeight: 100,
},
// mode
{
name: "ModeResize",
params: imageserver.Params{param: imageserver.Params{
"width": 100,
"height": 100,
"mode": "resize",
}},
expectedWidth: 100,
expectedHeight: 100,
},
{
name: "ModeThumbnail",
params: imageserver.Params{param: imageserver.Params{
"width": 100,
"height": 100,
"mode": "thumbnail",
}},
expectedWidth: 100,
expectedHeight: 79,
},
// interpolation
{
name: "InterpolationNearestNeighbor",
params: imageserver.Params{param: imageserver.Params{
"width": 100,
"interpolation": "nearest_neighbor",
}},
expectedWidth: 100,
},
{
name: "InterpolationBilinear",
params: imageserver.Params{param: imageserver.Params{
"width": 100,
"interpolation": "bilinear",
}},
expectedWidth: 100,
},
{
name: "InterpolationBicubic",
params: imageserver.Params{param: imageserver.Params{
"width": 100,
"interpolation": "bicubic",
}},
expectedWidth: 100,
},
{
name: "InterpolationMitchelNetravali",
params: imageserver.Params{param: imageserver.Params{
"width": 100,
"interpolation": "mitchell_netravali",
}},
expectedWidth: 100,
},
{
name: "InterpolationLanczos2",
params: imageserver.Params{param: imageserver.Params{
"width": 100,
"interpolation": "lanczos2",
}},
expectedWidth: 100,
},
{
name: "InterpolationLanczos3",
params: imageserver.Params{param: imageserver.Params{
"width": 100,
"interpolation": "lanczos3",
}},
expectedWidth: 100,
},
// error
{
name: "ParamInvalid",
params: imageserver.Params{param: "invalid"},
expectedParamError: param,
},
{
name: "WidthInvalidType",
params: imageserver.Params{param: imageserver.Params{
"width": "invalid",
}},
expectedParamError: param + ".width",
},
{
name: "HeightInvalidType",
params: imageserver.Params{param: imageserver.Params{
"height": "invalid",
}},
expectedParamError: param + ".height",
},
{
name: "WidthInvalidNegative",
params: imageserver.Params{param: imageserver.Params{
"width": -1,
}},
expectedParamError: param + ".width",
},
{
name: "HeightInvalidNegative",
params: imageserver.Params{param: imageserver.Params{
"height": -1,
}},
expectedParamError: param + ".height",
},
{
name: "WidthInvalidTooLarge",
processor: &Processor{MaxWidth: 500},
params: imageserver.Params{param: imageserver.Params{
"width": 1000,
}},
expectedParamError: param + ".width",
},
{
name: "HeightInvalidTooLarge",
processor: &Processor{MaxHeight: 500},
params: imageserver.Params{param: imageserver.Params{
"height": 1000,
}},
expectedParamError: param + ".height",
},
{
name: "InterpolationInvalidType",
params: imageserver.Params{param: imageserver.Params{
"width": 100,
"interpolation": false,
}},
expectedParamError: param + ".interpolation",
},
{
name: "InterpolationInvalidUnknown",
params: imageserver.Params{param: imageserver.Params{
"width": 100,
"interpolation": "invalid",
}},
expectedParamError: param + ".interpolation",
},
{
name: "ModeInvalidType",
params: imageserver.Params{param: imageserver.Params{
"width": 100,
"mode": false,
}},
expectedParamError: param + ".mode",
},
{
name: "ModeInvalidUnknown",
params: imageserver.Params{param: imageserver.Params{
"width": 100,
"mode": "invalid",
}},
expectedParamError: param + ".mode",
},
} {
t.Run(tc.name, func(t *testing.T) {
prc := tc.processor
if prc == nil {
prc = &Processor{}
}
nim, err := prc.Process(nim, tc.params)
if err != nil {
if err, ok := err.(*imageserver.ParamError); ok && err.Param == tc.expectedParamError {
return
}
t.Fatal(err)
}
if tc.expectedParamError != "" {
t.Fatal("no error")
}
if tc.expectedWidth != 0 && nim.Bounds().Dx() != tc.expectedWidth {
t.Fatalf("unexpected width: got %d, want %d", nim.Bounds().Dx(), tc.expectedWidth)
}
if tc.expectedHeight != 0 && nim.Bounds().Dy() != tc.expectedHeight {
t.Fatalf("unexpected height: got %d, want %d", nim.Bounds().Dy(), tc.expectedHeight)
}
})
}
}
func TestCorrectionProcessor(t *testing.T) {
nim, err := imageserver_image.Decode(testdata.Medium)
if err != nil {
t.Fatal(err)
}
simplePrc := imageserver_image.ProcessorFunc(func(nim image.Image, params imageserver.Params) (image.Image, error) {
return nim, nil
})
errPrc := imageserver_image.ProcessorFunc(func(nim image.Image, params imageserver.Params) (image.Image, error) {
return nil, fmt.Errorf("error")
})
for _, tc := range []struct {
name string
processor imageserver_image.Processor
enabled bool
params imageserver.Params
errorExpected bool
}{
{
name: "DefaultEnabled",
processor: simplePrc,
enabled: true,
},
{
name: "DefaultDisabled",
processor: simplePrc,
enabled: false,
},
{
name: "ParamDisabled",
processor: simplePrc,
enabled: true,
params: imageserver.Params{
"gamma_correction": false,
},
},
{
name: "ParamEnabled",
processor: simplePrc,
enabled: false,
params: imageserver.Params{
"gamma_correction": true,
},
},
{
name: "Error",
processor: errPrc,
enabled: true,
errorExpected: true,
},
{
name: "Invalid",
processor: simplePrc,
enabled: true,
params: imageserver.Params{
"gamma_correction": "invalid",
},
errorExpected: true,
},
} {
t.Run(tc.name, func(t *testing.T) {
prc := NewCorrectionProcessor(tc.processor, tc.enabled)
params := tc.params
if params == nil {
params = imageserver.Params{}
}
_, err = prc.Process(nim, params)
if tc.errorExpected && err == nil {
t.Fatal("no error")
} else if !tc.errorExpected && err != nil {
t.Fatal(err)
}
})
}
}
func TestProcess(t *testing.T) {
nim, err := imageserver_image.Decode(imageserver_testdata.Medium)
if err != nil {
t.Fatal(err)
}
type TC struct {
processor *Processor
params imageserver.Params
expectedWidth int
expectedHeight int
expectedParamError string
}
for _, tc := range []TC{
// no size
{
params: imageserver.Params{},
expectedWidth: 1024,
expectedHeight: 819,
},
{
params: imageserver.Params{Param: imageserver.Params{}},
expectedWidth: 1024,
expectedHeight: 819,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 0,
"height": 0,
}},
expectedWidth: 1024,
expectedHeight: 819,
},
// with size
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
}},
expectedWidth: 100,
},
{
params: imageserver.Params{Param: imageserver.Params{
"height": 100,
}},
expectedHeight: 100,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"height": 100,
}},
expectedWidth: 100,
expectedHeight: 100,
},
// mode
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"height": 100,
"mode": "fit",
}},
expectedWidth: 100,
expectedHeight: 80,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"height": 100,
"mode": "fill",
}},
expectedWidth: 100,
expectedHeight: 100,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"mode": "fill",
}},
expectedWidth: 100,
expectedHeight: 80,
},
// resampling
{
processor: &Processor{DefaultResampling: gift.NearestNeighborResampling},
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
}},
expectedWidth: 100,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"resampling": "nearest_neighbor",
}},
expectedWidth: 100,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"resampling": "box",
}},
expectedWidth: 100,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"resampling": "linear",
}},
expectedWidth: 100,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"resampling": "cubic",
}},
expectedWidth: 100,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"resampling": "lanczos",
}},
expectedWidth: 100,
},
// error
{
params: imageserver.Params{Param: "invalid"},
expectedParamError: Param,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": "invalid",
}},
expectedParamError: Param + ".width",
},
{
params: imageserver.Params{Param: imageserver.Params{
"height": "invalid",
}},
expectedParamError: Param + ".height",
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": -1,
}},
expectedParamError: Param + ".width",
},
{
params: imageserver.Params{Param: imageserver.Params{
"height": -1,
}},
expectedParamError: Param + ".height",
},
{
processor: &Processor{MaxWidth: 500},
params: imageserver.Params{Param: imageserver.Params{
"width": 1000,
}},
expectedParamError: Param + ".width",
},
{
processor: &Processor{MaxHeight: 500},
params: imageserver.Params{Param: imageserver.Params{
"height": 1000,
}},
expectedParamError: Param + ".height",
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"height": 100,
"mode": 666,
}},
expectedParamError: Param + ".mode",
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"height": 100,
"mode": "invalid",
}},
expectedParamError: Param + ".mode",
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"resampling": 666,
}},
expectedParamError: Param + ".resampling",
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"resampling": "invalid",
}},
expectedParamError: Param + ".resampling",
},
} {
func() {
defer func() {
if t.Failed() {
t.Logf("%#v", tc)
}
}()
prc := tc.processor
if prc == nil {
prc = &Processor{}
}
nim, err := prc.Process(nim, tc.params)
if err != nil {
if err, ok := err.(*imageserver.ParamError); ok && err.Param == tc.expectedParamError {
return
}
t.Fatal(err)
}
if tc.expectedParamError != "" {
t.Fatal("no error")
}
if tc.expectedWidth != 0 && nim.Bounds().Dx() != tc.expectedWidth {
t.Fatalf("unexpected width: got %d, want %d", nim.Bounds().Dx(), tc.expectedWidth)
}
if tc.expectedHeight != 0 && nim.Bounds().Dy() != tc.expectedHeight {
t.Fatalf("unexpected height: got %d, want %d", nim.Bounds().Dy(), tc.expectedHeight)
}
}()
}
}
func TestCorrectionProcessor(t *testing.T) {
nim, err := imageserver_image.Decode(testdata.Medium)
if err != nil {
t.Fatal(err)
}
simplePrc := imageserver_image.ProcessorFunc(func(nim image.Image, params imageserver.Params) (image.Image, error) {
return nim, nil
})
errPrc := imageserver_image.ProcessorFunc(func(nim image.Image, params imageserver.Params) (image.Image, error) {
return nil, fmt.Errorf("error")
})
type TC struct {
processor imageserver_image.Processor
enabled bool
params imageserver.Params
errorExpected bool
}
for _, tc := range []TC{
{
processor: simplePrc,
enabled: true,
},
{
processor: simplePrc,
enabled: false,
},
{
processor: simplePrc,
enabled: true,
params: imageserver.Params{
"gamma_correction": false,
},
},
{
processor: simplePrc,
enabled: false,
params: imageserver.Params{
"gamma_correction": true,
},
},
{
processor: errPrc,
enabled: true,
errorExpected: true,
},
{
processor: simplePrc,
enabled: true,
params: imageserver.Params{
"gamma_correction": "invalid",
},
errorExpected: true,
},
} {
func() {
defer func() {
if t.Failed() {
t.Logf("%#v", tc)
}
}()
prc := NewCorrectionProcessor(tc.processor, tc.enabled)
params := tc.params
if params == nil {
params = imageserver.Params{}
}
_, err = prc.Process(nim, params)
if tc.errorExpected && err == nil {
t.Fatal("no error")
} else if !tc.errorExpected && err != nil {
t.Fatal(err)
}
}()
}
}
func TestResizeProcessorProcess(t *testing.T) {
nim, err := imageserver_image.Decode(imageserver_testdata.Medium)
if err != nil {
t.Fatal(err)
}
for _, tc := range []struct {
name string
processor *ResizeProcessor
params imageserver.Params
expectedWidth int
expectedHeight int
expectedParamError string
}{
// no size
{
name: "Empty",
params: imageserver.Params{},
expectedWidth: 1024,
expectedHeight: 819,
},
{
name: "EmptyParam",
params: imageserver.Params{resizeParam: imageserver.Params{}},
expectedWidth: 1024,
expectedHeight: 819,
},
{
name: "SizeZero",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 0,
"height": 0,
}},
expectedWidth: 1024,
expectedHeight: 819,
},
// with size
{
name: "Width",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 100,
}},
expectedWidth: 100,
},
{
name: "Height",
params: imageserver.Params{resizeParam: imageserver.Params{
"height": 100,
}},
expectedHeight: 100,
},
{
name: "WidthHeight",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 100,
"height": 100,
}},
expectedWidth: 100,
expectedHeight: 100,
},
// mode
{
name: "ModeFit",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 100,
"height": 100,
"mode": "fit",
}},
expectedWidth: 100,
expectedHeight: 80,
},
{
name: "ModeFillWidthHeight",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 100,
"height": 100,
"mode": "fill",
}},
expectedWidth: 100,
expectedHeight: 100,
},
{
name: "ModeFill",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 100,
"mode": "fill",
}},
expectedWidth: 100,
expectedHeight: 80,
},
// resampling
{
name: "ResamplingDefault",
processor: &ResizeProcessor{DefaultResampling: gift.NearestNeighborResampling},
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 100,
}},
expectedWidth: 100,
},
{
name: "ResamplingNearestNeighbor",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 100,
"resampling": "nearest_neighbor",
}},
expectedWidth: 100,
},
{
name: "ResamplingBox",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 100,
"resampling": "box",
}},
expectedWidth: 100,
},
{
name: "ResamplingLinear",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 100,
"resampling": "linear",
}},
expectedWidth: 100,
},
{
name: "ResamplingCubic",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 100,
"resampling": "cubic",
}},
expectedWidth: 100,
},
{
name: "ResamplingLanczos",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 100,
"resampling": "lanczos",
}},
expectedWidth: 100,
},
// error
{
name: "ParamInvalid",
params: imageserver.Params{resizeParam: "invalid"},
expectedParamError: resizeParam,
},
{
name: "WidthInvalidType",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": "invalid",
}},
expectedParamError: resizeParam + ".width",
},
{
name: "HeightInvalidInvalid",
params: imageserver.Params{resizeParam: imageserver.Params{
"height": "invalid",
}},
expectedParamError: resizeParam + ".height",
},
{
name: "WidthInvalidNegative",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": -1,
}},
expectedParamError: resizeParam + ".width",
},
{
name: "HeightInvalidNegative",
params: imageserver.Params{resizeParam: imageserver.Params{
"height": -1,
}},
expectedParamError: resizeParam + ".height",
},
{
name: "WidthInvalidTooLarge",
processor: &ResizeProcessor{MaxWidth: 500},
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 1000,
}},
expectedParamError: resizeParam + ".width",
},
{
name: "HeightInvalidTooLarge",
processor: &ResizeProcessor{MaxHeight: 500},
params: imageserver.Params{resizeParam: imageserver.Params{
"height": 1000,
}},
expectedParamError: resizeParam + ".height",
},
{
name: "ModeInvalidType",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 100,
"height": 100,
"mode": 666,
}},
expectedParamError: resizeParam + ".mode",
},
{
name: "ModeInvalidUnknown",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 100,
"height": 100,
"mode": "invalid",
}},
expectedParamError: resizeParam + ".mode",
},
{
name: "ResamplingInvalidType",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 100,
"resampling": 666,
}},
expectedParamError: resizeParam + ".resampling",
},
{
name: "ResamplingInvalidUnknown",
params: imageserver.Params{resizeParam: imageserver.Params{
"width": 100,
"resampling": "invalid",
}},
expectedParamError: resizeParam + ".resampling",
},
} {
t.Run(tc.name, func(t *testing.T) {
prc := tc.processor
if prc == nil {
prc = &ResizeProcessor{}
}
nim, err := prc.Process(nim, tc.params)
if err != nil {
if err, ok := err.(*imageserver.ParamError); ok && err.Param == tc.expectedParamError {
return
}
t.Fatal(err)
}
if tc.expectedParamError != "" {
t.Fatal("no error")
}
if tc.expectedWidth != 0 && nim.Bounds().Dx() != tc.expectedWidth {
t.Fatalf("unexpected width: got %d, want %d", nim.Bounds().Dx(), tc.expectedWidth)
}
if tc.expectedHeight != 0 && nim.Bounds().Dy() != tc.expectedHeight {
t.Fatalf("unexpected height: got %d, want %d", nim.Bounds().Dy(), tc.expectedHeight)
}
})
}
}
func TestRotateProcessorProcess(t *testing.T) {
nim, err := imageserver_image.Decode(imageserver_testdata.Medium)
if err != nil {
t.Fatal(err)
}
prc := &RotateProcessor{}
for _, tc := range []struct {
name string
params imageserver.Params
expectedWidth int
expectedHeight int
expectedParamError string
}{
// no rotation
{
name: "Empty",
params: imageserver.Params{},
expectedWidth: 1024,
expectedHeight: 819,
},
{
name: "EmptyParam",
params: imageserver.Params{rotateParam: imageserver.Params{}},
expectedWidth: 1024,
expectedHeight: 819,
},
// with rotation
{
name: "Rotation0",
params: imageserver.Params{rotateParam: imageserver.Params{
"rotation": 0.0,
}},
expectedWidth: 1024,
expectedHeight: 819,
},
{
name: "Rotation360",
params: imageserver.Params{rotateParam: imageserver.Params{
"rotation": 360.0,
}},
expectedWidth: 1024,
expectedHeight: 819,
},
{
name: "Rotation90",
params: imageserver.Params{rotateParam: imageserver.Params{
"rotation": 90.0,
}},
expectedWidth: 819,
expectedHeight: 1024,
},
{
name: "Rotation180",
params: imageserver.Params{rotateParam: imageserver.Params{
"rotation": 180.0,
}},
expectedWidth: 1024,
expectedHeight: 819,
},
{
name: "Rotation270",
params: imageserver.Params{rotateParam: imageserver.Params{
"rotation": 270.0,
}},
expectedWidth: 819,
expectedHeight: 1024,
},
{
name: "Rotation45",
params: imageserver.Params{rotateParam: imageserver.Params{
"rotation": 45.0,
}},
expectedWidth: 1304,
expectedHeight: 1304,
},
// background
{
name: "Background",
params: imageserver.Params{rotateParam: imageserver.Params{
"rotation": 45.0,
"background": "FF0000",
}},
},
// interpolation
{
name: "InterpolationNearestNeighbor",
params: imageserver.Params{rotateParam: imageserver.Params{
"rotation": 45.0,
"interpolation": "nearest_neighbor",
}},
},
{
name: "InterpolationLinear",
params: imageserver.Params{rotateParam: imageserver.Params{
"rotation": 45.0,
"interpolation": "linear",
}},
},
{
name: "InterpolationCubic",
params: imageserver.Params{rotateParam: imageserver.Params{
"rotation": 45.0,
"interpolation": "cubic",
}},
},
// error
{
name: "ParamInvalid",
params: imageserver.Params{rotateParam: "invalid"},
expectedParamError: rotateParam,
},
{
name: "RotationInvalid",
params: imageserver.Params{rotateParam: imageserver.Params{
"rotation": "invalid",
}},
expectedParamError: rotateParam + ".rotation",
},
{
name: "BackgroundInvalidColor",
params: imageserver.Params{rotateParam: imageserver.Params{
"rotation": 45.0,
"background": "invalid",
}},
expectedParamError: rotateParam + ".background",
},
{
name: "BackgroundInvalidType",
params: imageserver.Params{rotateParam: imageserver.Params{
"rotation": 45.0,
"background": 666,
}},
expectedParamError: rotateParam + ".background",
},
{
name: "InterpolationInvalidUnknown",
params: imageserver.Params{rotateParam: imageserver.Params{
"rotation": 45.0,
"interpolation": "invalid",
}},
expectedParamError: rotateParam + ".interpolation",
},
{
name: "InteprolationInvalidType",
params: imageserver.Params{rotateParam: imageserver.Params{
"rotation": 45.0,
"interpolation": 666,
}},
expectedParamError: rotateParam + ".interpolation",
},
} {
t.Run(tc.name, func(t *testing.T) {
nim, err := prc.Process(nim, tc.params)
if err != nil {
if err, ok := err.(*imageserver.ParamError); ok && err.Param == tc.expectedParamError {
return
}
t.Fatal(err)
}
if tc.expectedParamError != "" {
t.Fatal("no error")
}
if tc.expectedWidth != 0 && nim.Bounds().Dx() != tc.expectedWidth {
t.Fatalf("unexpected width: got %d, want %d", nim.Bounds().Dx(), tc.expectedWidth)
}
if tc.expectedHeight != 0 && nim.Bounds().Dy() != tc.expectedHeight {
t.Fatalf("unexpected height: got %d, want %d", nim.Bounds().Dy(), tc.expectedHeight)
}
})
}
}
func TestProcessor(t *testing.T) {
prc := &Processor{}
type TC struct {
params imageserver.Params
expectedWidth int
expectedHeight int
expectedParamError string
}
for _, tc := range []TC{
// no size
{
params: imageserver.Params{},
expectedWidth: 1024,
expectedHeight: 819,
},
{
params: imageserver.Params{Param: imageserver.Params{}},
expectedWidth: 1024,
expectedHeight: 819,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 0,
"height": 0,
}},
expectedWidth: 1024,
expectedHeight: 819,
},
// with size
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
}},
expectedWidth: 100,
},
{
params: imageserver.Params{Param: imageserver.Params{
"height": 100,
}},
expectedHeight: 100,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"height": 100,
}},
expectedWidth: 100,
expectedHeight: 100,
},
// interpolation
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"interpolation": "nearest_neighbor",
}},
expectedWidth: 100,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"interpolation": "bilinear",
}},
expectedWidth: 100,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"interpolation": "bicubic",
}},
expectedWidth: 100,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"interpolation": "mitchell_netravali",
}},
expectedWidth: 100,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"interpolation": "lanczos2",
}},
expectedWidth: 100,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"interpolation": "lanczos3",
}},
expectedWidth: 100,
},
// mode
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"height": 100,
"mode": "resize",
}},
expectedWidth: 100,
expectedHeight: 100,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"height": 100,
"mode": "thumbnail",
}},
expectedWidth: 100,
expectedHeight: 79, // 819 * 100 / 1024
},
// error
{
params: imageserver.Params{Param: "invalid"},
expectedParamError: Param,
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": "invalid",
}},
expectedParamError: Param + ".width",
},
{
params: imageserver.Params{Param: imageserver.Params{
"height": "invalid",
}},
expectedParamError: Param + ".height",
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": -1,
}},
expectedParamError: Param + ".width",
},
{
params: imageserver.Params{Param: imageserver.Params{
"height": -1,
}},
expectedParamError: Param + ".height",
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"interpolation": false,
}},
expectedParamError: Param + ".interpolation",
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"interpolation": "invalid",
}},
expectedParamError: Param + ".interpolation",
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"mode": false,
}},
expectedParamError: Param + ".mode",
},
{
params: imageserver.Params{Param: imageserver.Params{
"width": 100,
"mode": "invalid",
}},
expectedParamError: Param + ".mode",
},
} {
func() {
defer func() {
if t.Failed() {
t.Logf("%#v", tc)
}
}()
im, err := imageserver_image.Decode(imageserver_testdata.Medium)
if err != nil {
t.Fatal(err)
}
im, err = prc.Process(im, tc.params)
if err != nil {
if err, ok := err.(*imageserver.ParamError); ok && err.Param == tc.expectedParamError {
return
}
t.Fatal(err)
}
if tc.expectedWidth != 0 && im.Bounds().Dx() != tc.expectedWidth {
t.Fatalf("unexpected width: got %d, want %d", im.Bounds().Dx(), tc.expectedWidth)
}
if tc.expectedHeight != 0 && im.Bounds().Dy() != tc.expectedHeight {
t.Fatalf("unexpected height: got %d, want %d", im.Bounds().Dy(), tc.expectedHeight)
}
}()
}
}