Added tests for resize

tools/resize/Makefile

@@ -5,6 +5,12 @@ HOST_WARNINGS=$(WARN_ERROR) -pedantic-errors -Wfatal-errors -Wall  -Wextra -Wno-
 HOST_CFLAGS=$(HOST_WARNINGS) -O3 `GraphicsMagick-config --cppflags`
 LIBS=`GraphicsMagick-config --ldflags --libs`
 
+TEST_IMAGE=../../assets/gigi_full.png
+RESIZED_IMAGE=out/gigi.png
+RESIZED_LACED=out/gigi_laced.png
+REFERENCE_IMAGE=reference/gigi.png
+REFERENCE_LACED=reference/gigi_laced.png
+
 $(PROGRAM): out bin $(OBJS) 
 	gcc $(OBJS) -o $(PROGRAM) $(LIBS)
 
@@ -24,4 +30,20 @@ bin:
 	mkdir bin
 
 clean:
-	rm -rf out bin *~
+	rm -rf out bin *~
+
+$(RESIZED_IMAGE): $(TEST_IMAGE) $(PROGRAM) Makefile
+	$(PROGRAM) --width=320 --height=256 --blur=0.75 --input=$(TEST_IMAGE) --output=$(RESIZED_IMAGE)
+
+$(RESIZED_LACED): $(TEST_IMAGE) $(PROGRAM) Makefile
+	$(PROGRAM) --width=320 --height=512 --interlaced --blur=0.75 --input=$(TEST_IMAGE) --output=$(RESIZED_LACED)
+
+test: $(RESIZED_IMAGE) $(RESIZED_LACED)
+	diff $(RESIZED_IMAGE) $(REFERENCE_IMAGE);
+	diff $(RESIZED_LACED) $(REFERENCE_LACED);
+	@echo "______  ___   _____ _____ ___________  "
+	@echo "| ___ \/ _ \ /  ___/  ___|  ___|  _  \ "
+	@echo "| |_/ / /_\ \\\\\ \`--.\ \`--.| |__ | | | | "
+	@echo "|  __/|  _  | \`--. \\\`--. \  __|| | | | "
+	@echo "| |   | | | |/\__/ /\__/ / |___| |/ /  "
+	@echo "\_|   \_| |_/\____/\____/\____/|___/   "