test: add simple unit tests for image loading.

test/Makefile.am

@@ -14,12 +14,15 @@ CLEANFILES = $(noinst_PROGRAMS:%$(EXEEXT)=%.self) \
              $(noinst_PROGRAMS:%$(EXEEXT)=%.elf) \
              $(noinst_PROGRAMS:%$(EXEEXT)=%.exe)
 
+EXTRA_DIST = data/gradient.png
+
 noinst_PROGRAMS = quad sandbox benchsuite testsuite
 
 TESTS = testsuite
 
 testsuite_SOURCES = testsuite.cpp \
-    unit/matrix.cpp unit/half.cpp unit/trig.cpp unit/build.cpp unit/real.cpp
+    unit/matrix.cpp unit/half.cpp unit/trig.cpp unit/build.cpp \
+    unit/real.cpp unit/image.cpp
 testsuite_CPPFLAGS = @LOL_CFLAGS@ @PIPI_CFLAGS@
 testsuite_LDFLAGS = $(top_builddir)/src/liblol.a @LOL_LIBS@ @PIPI_LIBS@
 testsuite_DEPENDENCIES = $(top_builddir)/src/liblol.a

test/unit/image.cpp

@@ -0,0 +1,50 @@
+//
+// Lol Engine
+//
+// Copyright: (c) 2010-2011 Sam Hocevar <sam@hocevar.net>
+//   This program is free software; you can redistribute it and/or
+//   modify it under the terms of the Do What The Fuck You Want To
+//   Public License, Version 2, as published by Sam Hocevar. See
+//   http://sam.zoy.org/projects/COPYING.WTFPL for more details.
+//
+
+#if defined HAVE_CONFIG_H
+#   include "config.h"
+#endif
+
+#include <cmath>
+
+#include "core.h"
+#include "lol/unit.h"
+
+namespace lol
+{
+
+LOLUNIT_FIXTURE(ImageTest)
+{
+    LOLUNIT_TEST(OpenImage)
+    {
+        Image *image = new Image("data/gradient.png");
+        LOLUNIT_ASSERT(image);
+
+        ivec2 size = image->GetSize();
+        LOLUNIT_ASSERT_EQUAL(size.x, 256);
+        LOLUNIT_ASSERT_EQUAL(size.y, 16);
+
+        uint8_t *data = (uint8_t *)image->GetData();
+        LOLUNIT_ASSERT(data);
+
+        LOLUNIT_ASSERT_EQUAL((int)data[0], 0x00);
+        LOLUNIT_ASSERT_EQUAL((int)data[1], 0x00);
+        LOLUNIT_ASSERT_EQUAL((int)data[2], 0x00);
+
+        LOLUNIT_ASSERT_EQUAL((int)data[255 * 4 + 0], 0xff);
+        LOLUNIT_ASSERT_EQUAL((int)data[255 * 4 + 1], 0xff);
+        LOLUNIT_ASSERT_EQUAL((int)data[255 * 4 + 2], 0xff);
+
+        delete image;
+    }
+};
+
+} /* namespace lol */
+