Merge pull request #146 from delroth/tests

Add more tests for Common and Core/MMIO

1 files changed, 56 insertions, 0 deletions

diff --git a/Source/UnitTests/Common/MathUtilTest.cpp b/Source/UnitTests/Common/MathUtilTest.cpp
new file mode 100644
index 0000000000..a6924f9cf7
--- /dev/null
+++ b/Source/UnitTests/Common/MathUtilTest.cpp
@@ -0,0 +1,56 @@
+// Copyright 2014 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include <cmath>
+#include <gtest/gtest.h>
+
+#include "Common/MathUtil.h"
+
+template <typename T>
+T ClampAndReturn(const T& val, const T& min, const T& max)
+{
+	T ret = val;
+	MathUtil::Clamp(&ret, min, max);
+	return ret;
+}
+
+TEST(MathUtil, Clamp)
+{
+	EXPECT_EQ(1, ClampAndReturn(1, 0, 2));
+	EXPECT_EQ(1.0, ClampAndReturn(1.0, 0.0, 2.0));
+
+	EXPECT_EQ(2, ClampAndReturn(4, 0, 2));
+	EXPECT_EQ(2.0, ClampAndReturn(4.0, 0.0, 2.0));
+
+	EXPECT_EQ(0, ClampAndReturn(-1, 0, 2));
+	EXPECT_EQ(0.0, ClampAndReturn(-1.0, 0.0, 2.0));
+}
+
+TEST(MathUtil, IsNAN)
+{
+	EXPECT_TRUE(MathUtil::IsNAN(nan("")));
+}
+
+TEST(MathUtil, IsQNAN)
+{
+	// TODO
+}
+
+TEST(MathUtil, IsSNAN)
+{
+	// TODO
+}
+
+TEST(MathUtil, Log2)
+{
+	EXPECT_EQ(0, Log2(1));
+	EXPECT_EQ(1, Log2(2));
+	EXPECT_EQ(2, Log2(4));
+	EXPECT_EQ(3, Log2(8));
+	EXPECT_EQ(63, Log2(0x8000000000000000ull));
+
+	// Rounding behavior.
+	EXPECT_EQ(3, Log2(15));
+	EXPECT_EQ(63, Log2(0xFFFFFFFFFFFFFFFFull));
+}