#!/bin/sh

# this test is also in test_resample.py (though much smaller and neater) ...
# keep this test to exercise the cli interface

# set -x

. ./variables.sh

test_rotate() {
	im=$1
	inter=$2

	printf "testing $inter ... "

	# 90 degree clockwise rotate 
	trn="0 1 1 0"

	$vips affine $im $tmp/t1.v "$trn" --interpolate $inter
	$vips affine $tmp/t1.v $tmp/t2.v "$trn" --interpolate $inter
	$vips affine $tmp/t2.v $tmp/t1.v "$trn" --interpolate $inter
	$vips affine $tmp/t1.v $tmp/t2.v "$trn" --interpolate $inter

	test_difference $im $tmp/t2.v 1

	echo "ok"
}

# vsqbs is non-interpolatory, don't test this way

echo "testing with $(basename $image)"
for i in nearest bicubic bilinear nohalo lbb; do
	test_rotate $image $i
done

test_size() {
	to_test=$1
	correct_width=$2
	correct_height=$3

	width=$($vipsheader -f width $to_test)
	height=$($vipsheader -f height $to_test)
	if [ $width -ne $correct_width ]; then
		echo width is $width, not $correct_width
		exit 1
	fi
	if [ $height -ne $correct_height ]; then
		echo height is $height, not $correct_height
		exit 1
	fi
}

test_thumbnail() {
	geo=$1
	correct_width=$2
	correct_height=$3

	printf "testing thumbnail -s $geo ... "
	$vipsthumbnail $image -s "$geo" -o $tmp/t1.jpg
	test_size $tmp/t1.jpg $correct_width $correct_height

	echo "ok"
}

test_thumbnail 100 66 100
test_thumbnail 100x100 66 100
test_thumbnail x100 66 100
test_thumbnail "100x100<" 290 442
test_thumbnail "2000<" 1312 2000
test_thumbnail "100x100>" 66 100
test_thumbnail "2000>" 290 442

# test thumbnail to and from pipes
echo -n "testing thumbnail of stdin / stdout ... "
$vipsthumbnail stdin -s 100 -o $tmp/t1.jpg < $image
test_size $tmp/t1.jpg 66 100
cat $image | $vipsthumbnail stdin -s 100 -o $tmp/t1.jpg
test_size $tmp/t1.jpg 66 100
cat $image | $vipsthumbnail stdin -s 100 -o .jpg > $tmp/t1.jpg
test_size $tmp/t1.jpg 66 100
cat $image | $vipsthumbnail stdin -s 100 -o .jpg | cat > $tmp/t1.jpg
echo ok
test_size $tmp/t1.jpg 66 100