Add tests for polygon (#128)

Author: tuupola

tests/Makefile

@@ -17,15 +17,19 @@ SRCS = \
     ../src/hagl_triangle.c \
     ../src/rgb565.c
 
-all: test_fill_polygon
+all: test_fill_polygon test_polygon
 
 test_fill_polygon: test_fill_polygon.c $(SRCS)
 	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
 
-test: test_fill_polygon
+test_polygon: test_polygon.c $(SRCS)
+	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
+
+test: test_fill_polygon test_polygon
 	./test_fill_polygon
+	./test_polygon
 
 clean:
-	rm -f test_fill_polygon
+	rm -f test_fill_polygon test_polygon
 
 .PHONY: all test clean

tests/test_fill_polygon.c

@@ -561,7 +561,7 @@ test_fill_polygon_degenerate_two_vertices(void) {
     PASS();
 }
 
-SUITE(polygon_suite) {
+SUITE(fill_polygon_suite) {
     SET_SETUP(setup_callback, NULL);
     RUN_TEST(test_fill_polygon_square);
     RUN_TEST(test_fill_polygon_square_regression);
@@ -592,6 +592,6 @@ GREATEST_MAIN_DEFS();
 int
 main(int argc, char **argv) {
     GREATEST_MAIN_BEGIN();
-    RUN_SUITE(polygon_suite);
+    RUN_SUITE(fill_polygon_suite);
     GREATEST_MAIN_END();
 }