func openImage(t *testing.T, path string) image.Image {
fireTruck, err := os.Open(path)
assert.NoError(t, err, "error openenig image")
img, err := jpeg.Decode(fireTruck)
assert.NoError(t, err, "error decoding image")
return img
}
func Test4pieceJigsaw(t *testing.T) {
img := openImage(t, JPG_SAMPLE)
builder := jigsaw.NewJigsawBuilder(img, 24)
jig, err := builder.Build()
assert.NoError(t, err, "did not expect an error")
assert.NotNil(t, jig, "expected jigsaw")
// for _, p := range jig.Pieces {
// assert.True(t, p.IsCorner, "should be a corner")
// }
}