63e58ba035
Add banner image as a special `IdentityImage` beside "thumbnail" and "large" Banner input cropped image processing - Resize to keep in the limits of `BannerDim` - Encode to match the file size limits define for banner - Don't scale up. This can be done efficiently in the UI Changes to `images` module - Refactor `EncodeToBestSize` as `EncodeToLimits` to accept arbitrary dimensions and allow for custom size - Define `DimensionLimits` for banner not to exceed 450 KB and a rough estimate for the ideal size
47 lines
1.4 KiB
Go
47 lines
1.4 KiB
Go
package images
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import (
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"image"
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"image/png"
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"os"
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"testing"
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"github.com/stretchr/testify/require"
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)
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func TestGenerateBannerImage_NoScaleUp(t *testing.T) {
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// Test image 256x256
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testImage := path + "status.png"
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identityImage, err := GenerateBannerImage(testImage, 50, 50, 150, 100)
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require.NoError(t, err)
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require.Exactly(t, identityImage.Name, BannerIdentityName)
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require.Positive(t, len(identityImage.Payload))
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// Ensure we don't scale it up. That will be done inefficiently in backend instead of frontend
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require.Exactly(t, identityImage.Width, 100)
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require.Exactly(t, identityImage.Height, 50)
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require.Exactly(t, identityImage.FileSize, len(identityImage.Payload))
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require.Exactly(t, identityImage.ResizeTarget, int(BannerDim))
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}
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func TestGenerateBannerImage_ShrinkOnly(t *testing.T) {
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// Generate test image bigger than BannerDim
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testImage := image.NewRGBA(image.Rect(0, 0, int(BannerDim)+10, int(BannerDim)+20))
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tmpTestFilePath := t.TempDir() + "/test.png"
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file, err := os.Create(tmpTestFilePath)
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require.NoError(t, err)
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defer file.Close()
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err = png.Encode(file, testImage)
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require.NoError(t, err)
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identityImage, error := GenerateBannerImage(tmpTestFilePath, 0, 0, int(BannerDim)+5, int(BannerDim)+10)
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require.NoError(t, error)
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require.Positive(t, len(identityImage.Payload))
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// Ensure we scale it down by the small side
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require.Exactly(t, identityImage.Width, int(BannerDim))
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require.Exactly(t, identityImage.Height, 805)
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}
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