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forgejo/modules/avatar/avatar_test.go
wxiaoguang 82224c54e0
Improve avatar uploading / resizing / compressing, remove Fomantic card module (#24653)
Fixes: #8972
Fixes: #24263

And I think it also (partially) fix #24263 (no need to convert) ,
because users could upload any supported image format if it isn't larger
than AVATAR_MAX_ORIGIN_SIZE


The main idea: 

* if the uploaded file size is not larger than AVATAR_MAX_ORIGIN_SIZE,
use the origin
* if the resized size is larger than the origin, use the origin

Screenshots:

JPG:

<details>


![image](https://github.com/go-gitea/gitea/assets/2114189/70e98bb0-ecb9-4c4e-a89f-4a37d4e37f8e)

</details>

APNG:

<details>


![image](https://github.com/go-gitea/gitea/assets/2114189/9055135b-5e2d-4152-bd72-596fcb7c6671)


![image](https://github.com/go-gitea/gitea/assets/2114189/50364caf-f7f6-4241-a289-e485fe4cd582)

</details>

WebP (animated)

<details>


![image](https://github.com/go-gitea/gitea/assets/2114189/f642eb85-498a-49a5-86bf-0a7b04089ae0)

</details>

The only exception: if a WebP image is larger than MaxOriginSize and it
is animated, then current `webp` package can't decode it, so only in
this case it isn't supported. IMO no need to support such case: why a
user would upload a 1MB animated webp as avatar? crazy .....

---------

Co-authored-by: silverwind <me@silverwind.io>
2023-05-13 20:59:11 +02:00

137 lines
3.7 KiB
Go

// Copyright 2016 The Gogs Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package avatar
import (
"bytes"
"image"
"image/png"
"os"
"testing"
"code.gitea.io/gitea/modules/setting"
"github.com/stretchr/testify/assert"
)
func Test_RandomImageSize(t *testing.T) {
_, err := RandomImageSize(0, []byte("gitea@local"))
assert.Error(t, err)
_, err = RandomImageSize(64, []byte("gitea@local"))
assert.NoError(t, err)
}
func Test_RandomImage(t *testing.T) {
_, err := RandomImage([]byte("gitea@local"))
assert.NoError(t, err)
}
func Test_ProcessAvatarPNG(t *testing.T) {
setting.Avatar.MaxWidth = 4096
setting.Avatar.MaxHeight = 4096
data, err := os.ReadFile("testdata/avatar.png")
assert.NoError(t, err)
_, err = processAvatarImage(data, 262144)
assert.NoError(t, err)
}
func Test_ProcessAvatarJPEG(t *testing.T) {
setting.Avatar.MaxWidth = 4096
setting.Avatar.MaxHeight = 4096
data, err := os.ReadFile("testdata/avatar.jpeg")
assert.NoError(t, err)
_, err = processAvatarImage(data, 262144)
assert.NoError(t, err)
}
func Test_ProcessAvatarInvalidData(t *testing.T) {
setting.Avatar.MaxWidth = 5
setting.Avatar.MaxHeight = 5
_, err := processAvatarImage([]byte{}, 12800)
assert.EqualError(t, err, "image.DecodeConfig: image: unknown format")
}
func Test_ProcessAvatarInvalidImageSize(t *testing.T) {
setting.Avatar.MaxWidth = 5
setting.Avatar.MaxHeight = 5
data, err := os.ReadFile("testdata/avatar.png")
assert.NoError(t, err)
_, err = processAvatarImage(data, 12800)
assert.EqualError(t, err, "image width is too large: 10 > 5")
}
func Test_ProcessAvatarImage(t *testing.T) {
setting.Avatar.MaxWidth = 4096
setting.Avatar.MaxHeight = 4096
scaledSize := DefaultAvatarSize * setting.Avatar.RenderedSizeFactor
newImgData := func(size int, optHeight ...int) []byte {
width := size
height := size
if len(optHeight) == 1 {
height = optHeight[0]
}
img := image.NewRGBA(image.Rect(0, 0, width, height))
bs := bytes.Buffer{}
err := png.Encode(&bs, img)
assert.NoError(t, err)
return bs.Bytes()
}
// if origin image canvas is too large, crop and resize it
origin := newImgData(500, 600)
result, err := processAvatarImage(origin, 0)
assert.NoError(t, err)
assert.NotEqual(t, origin, result)
decoded, err := png.Decode(bytes.NewReader(result))
assert.NoError(t, err)
assert.EqualValues(t, scaledSize, decoded.Bounds().Max.X)
assert.EqualValues(t, scaledSize, decoded.Bounds().Max.Y)
// if origin image is smaller than the default size, use the origin image
origin = newImgData(1)
result, err = processAvatarImage(origin, 0)
assert.NoError(t, err)
assert.Equal(t, origin, result)
// use the origin image if the origin is smaller
origin = newImgData(scaledSize + 100)
result, err = processAvatarImage(origin, 0)
assert.NoError(t, err)
assert.Less(t, len(result), len(origin))
// still use the origin image if the origin doesn't exceed the max-origin-size
origin = newImgData(scaledSize + 100)
result, err = processAvatarImage(origin, 262144)
assert.NoError(t, err)
assert.Equal(t, origin, result)
// allow to use known image format (eg: webp) if it is small enough
origin, err = os.ReadFile("testdata/animated.webp")
assert.NoError(t, err)
result, err = processAvatarImage(origin, 262144)
assert.NoError(t, err)
assert.Equal(t, origin, result)
// do not support unknown image formats, eg: SVG may contain embedded JS
origin = []byte("<svg></svg>")
_, err = processAvatarImage(origin, 262144)
assert.ErrorContains(t, err, "image: unknown format")
// make sure the canvas size limit works
setting.Avatar.MaxWidth = 5
setting.Avatar.MaxHeight = 5
origin = newImgData(10)
_, err = processAvatarImage(origin, 262144)
assert.ErrorContains(t, err, "image width is too large: 10 > 5")
}