add testcase for gdImageColorClosestHWB

add testcase for gdImageColorClosestHWB

tests/CMakeLists.txt

@@ -27,6 +27,7 @@ if (BUILD_TEST)
 		gdimageclone
 		gdimagecolor
 		gdimagecolorclosest
+		gdimagecolorclosesthwb
 		gdimagecolordeallocate
 		gdimagecolorexact
 		gdimagecolormatch

tests/Makefile.am

@@ -23,6 +23,7 @@ include gdimagebrightness/Makemodule.am
 include gdimageclone/Makemodule.am
 include gdimagecolor/Makemodule.am
 include gdimagecolorclosest/Makemodule.am
+include gdimagecolorclosesthwb/Makemodule.am
 include gdimagecolordeallocate/Makemodule.am
 include gdimagecolorexact/Makemodule.am
 include gdimagecolormatch/Makemodule.am

tests/gdimagecolorclosesthwb/.gitignore

@@ -0,0 +1 @@
+/gdImageColorClosestHWB

tests/gdimagecolorclosesthwb/CMakeLists.txt

@@ -0,0 +1,7 @@
+IF(PNG_FOUND)
+LIST(APPEND TESTS_FILES
+	gdImageColorClosestHWB
+)
+ENDIF(PNG_FOUND)
+
+ADD_GD_TESTS()

tests/gdimagecolorclosesthwb/Makemodule.am

@@ -0,0 +1,7 @@
+if HAVE_LIBPNG
+libgd_test_programs += \
+	gdimagecolorclosesthwb/gdImageColorClosestHWB
+endif
+
+EXTRA_DIST += \
+	gdimagecolorclosesthwb/CMakeLists.txt

tests/gdimagecolorclosesthwb/gdImageColorClosestHWB.c

@@ -0,0 +1,26 @@
+/**
+  * Basic test for gdImageColorClosestHWB()
+  **/
+#include "gd.h"
+#include "gdtest.h"
+
+int main()
+{
+	gdImagePtr im;
+	FILE *fp;
+
+	fp = gdTestFileOpen2("gdimageflip", "remi.png");
+	im = gdImageCreateFromPng(fp);
+	fclose(fp);
+
+	int result = gdImageColorClosestHWB(im, 255, 0, 255);
+
+	if (gdTestAssert(result <= 0))
+	{
+		gdImageDestroy(im);
+		return 1;
+	}
+
+	gdImageDestroy(im);
+	return 0;
+}