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add test for trimEdges function with uneven vertical rectangle image

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Vetle Leinonen-Roeim 2025-03-30 18:19:29 +02:00
parent 5c2594a139
commit 209bcc54a3
1 changed files with 38 additions and 0 deletions
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38
transform_test.go
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@ -449,6 +449,44 @@ func TestTrimEdgesCircle(t *testing.T) {
}
}
func TestTrimEdgesUnevenVerticalRectangle(t *testing.T) {
// Define colors for better readability
white := color.NRGBA{255, 255, 255, 255}
red := color.NRGBA{255, 0, 0, 255}
// Create a 9x5 image with a white background and a red diagonal shape
src := newImage(5, 9,
white, white, white, white, white,
white, white, white, red, white,
white, white, red, white, white,
white, red, white, white, white,
white, red, white, white, white,
white, red, white, white, white,
white, white, red, white, white,
white, white, white, red, white,
white, white, white, white, white,
)
// Expected result: a trimmed 5x5 image containing only the diagonal shape
want := newImage(3, 7,
white, white, red,
white, red, white,
red, white, white,
red, white, white,
red, white, white,
white, red, white,
white, white, red,
)
// Apply the trimEdges function
got := trimEdges(src)
// Compare pixel data
if !compareImages(got, want) {
t.Errorf("trimEdges() pixel data does not match expected result")
}
}
func compareImages(img1, img2 image.Image) bool {
bounds1 := img1.Bounds()
bounds2 := img2.Bounds()