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package exiffix
import (
"image/color"
"os"
"strconv"
"testing"
)
func TestDecode(t *testing.T) {
for i := 1; i < 9; i++ {
path := "test_data/f" + strconv.Itoa(i) + "t.jpg"
file, err := os.Open(path)
if err != nil {
panic(err)
}
defer file.Close()
img, _, err := Decode(file)
if err != nil {
panic(err)
}
bounds := img.Bounds()
minP := bounds.Min
maxP := bounds.Max
leftUpper := img.At(minP.X, minP.Y)
rightUpper := img.At(maxP.X-1, minP.Y)
leftLower := img.At(minP.X, maxP.Y-1)
rightLower := img.At(maxP.X-1, maxP.Y-1)
if !(isBlack(leftUpper) && isBlack(rightUpper) && isBlack(leftLower) && !isBlack(rightLower)) {
t.Errorf(`
The path is %s.
isBlack(leftUpper) && isBlack(rightUpper) && isBlack(leftLower) && !isBlack(rightLower):
Expected %t, %t, %t, %t.
Got %t, %t, %t, %t`,
path,
true, true, true, true,
isBlack(leftUpper), isBlack(rightUpper), isBlack(leftLower), !isBlack(rightLower),
)
}
}
}
func isBlack(point color.Color) bool {
r, g, b, _ := point.RGBA()
return r == 0 && g == 0 && b == 0
}
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