Add preliminary tests for PVRTC pixels

PVRTCEncoder/test/CMakeLists.txt

@@ -57,7 +57,7 @@ INCLUDE_DIRECTORIES(${FasTC_SOURCE_DIR}/PVRTCEncoder/src)
 INCLUDE_DIRECTORIES(${FasTC_SOURCE_DIR}/GTest/include)
 
 SET(TESTS
-  Block
+  Block Pixel
 )
 
 FOREACH(TEST ${TESTS})

PVRTCEncoder/test/PixelTest.cpp

@@ -0,0 +1,91 @@
+/* FasTC
+ * Copyright (c) 2013 University of North Carolina at Chapel Hill.
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for educational, research, and non-profit purposes, without
+ * fee, and without a written agreement is hereby granted, provided that the
+ * above copyright notice, this paragraph, and the following four paragraphs
+ * appear in all copies.
+ *
+ * Permission to incorporate this software into commercial products may be
+ * obtained by contacting the authors or the Office of Technology Development
+ * at the University of North Carolina at Chapel Hill <otd@unc.edu>.
+ *
+ * This software program and documentation are copyrighted by the University of
+ * North Carolina at Chapel Hill. The software program and documentation are
+ * supplied "as is," without any accompanying services from the University of
+ * North Carolina at Chapel Hill or the authors. The University of North
+ * Carolina at Chapel Hill and the authors do not warrant that the operation of
+ * the program will be uninterrupted or error-free. The end-user understands
+ * that the program was developed for research purposes and is advised not to
+ * rely exclusively on the program for any reason.
+ *
+ * IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE
+ * AUTHORS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
+ * OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF
+ * THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA
+ * AT CHAPEL HILL OR THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS SPECIFICALLY
+ * DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY 
+ * STATUTORY WARRANTY OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON
+ * AN "AS IS" BASIS, AND THE UNIVERSITY  OF NORTH CAROLINA AT CHAPEL HILL AND
+ * THE AUTHORS HAVE NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, 
+ * ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Please send all BUG REPORTS to <pavel@cs.unc.edu>.
+ *
+ * The authors may be contacted via:
+ *
+ * Pavel Krajcevski
+ * Dept of Computer Science
+ * 201 S Columbia St
+ * Frederick P. Brooks, Jr. Computer Science Bldg
+ * Chapel Hill, NC 27599-3175
+ * USA
+ * 
+ * <http://gamma.cs.unc.edu/FasTC/>
+ */
+
+#include "gtest/gtest.h"
+#include "Pixel.h"
+
+TEST(Pixel, DefaultConstructor) {
+  PVRTCC::Pixel p;
+  EXPECT_EQ(p.R(), 0);
+  EXPECT_EQ(p.G(), 0);
+  EXPECT_EQ(p.B(), 0);
+  EXPECT_EQ(p.A(), 0);
+
+  uint8 depth[4];
+  p.GetBitDepth(depth);
+
+  for(int i = 0; i < 4; i++) {
+    EXPECT_EQ(depth[i], 8);
+  }
+}
+
+TEST(Pixel, FromBitsAndAssociatedConstructor) {
+  const uint8 bits[8] = { 0xA8, 0xB3, 0x7C, 0x21, 0xBD, 0xD4, 0x09, 0x92 };
+  PVRTCC::Pixel ps[2];
+  ps[0] = PVRTCC::Pixel(bits);
+  ps[1].FromBits(bits);
+
+  for(int i = 0; i < 2; i++) {
+    PVRTCC::Pixel &p = ps[i];
+
+    EXPECT_EQ(p.A(), 0xA8);
+    EXPECT_EQ(p.R(), 0xB3);
+    EXPECT_EQ(p.G(), 0x7C);
+    EXPECT_EQ(p.B(), 0x21);
+
+    uint8 depth[4];
+    p.GetBitDepth(depth);
+    for(int j = 0; j < 4; j++) {
+      EXPECT_EQ(depth[j], 8);
+    }
+  }
+}