From 3dde22ea6265041b5d35d8ff59cf22306bc83c56 Mon Sep 17 00:00:00 2001
From: Sam Hocevar <sam@hocevar.net>
Date: Fri, 4 Nov 2011 22:42:35 +0000
Subject: [PATCH] test: add missing quaternion unit tests.
---
test/unit/quat.cpp | 129 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 129 insertions(+)
create mode 100644 test/unit/quat.cpp
diff --git a/test/unit/quat.cpp b/test/unit/quat.cpp
new file mode 100644
index 00000000..02a13f38
--- /dev/null
+++ b/test/unit/quat.cpp
@@ -0,0 +1,129 @@
+//
+// 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 "core.h"
+#include "lol/unit.h"
+
+namespace lol
+{
+
+LOLUNIT_FIXTURE(QuaternionTest)
+{
+ void SetUp() {}
+
+ void TearDown() {}
+
+ LOLUNIT_TEST(Equality)
+ {
+ quat a4(1.0f, 2.0f, 3.0f, 4.0f);
+ quat b4(0.0f, 2.0f, 3.0f, 4.0f);
+ quat c4(1.0f, 0.0f, 3.0f, 4.0f);
+ quat d4(1.0f, 2.0f, 0.0f, 4.0f);
+ quat e4(1.0f, 2.0f, 3.0f, 0.0f);
+
+ LOLUNIT_ASSERT_EQUAL(a4, a4);
+ LOLUNIT_ASSERT_NOT_DIFFERENT(a4, a4);
+
+ LOLUNIT_ASSERT_DIFFERENT(a4, b4);
+ LOLUNIT_ASSERT_NOT_EQUAL(a4, b4);
+ LOLUNIT_ASSERT_DIFFERENT(a4, c4);
+ LOLUNIT_ASSERT_NOT_EQUAL(a4, c4);
+ LOLUNIT_ASSERT_DIFFERENT(a4, d4);
+ LOLUNIT_ASSERT_NOT_EQUAL(a4, d4);
+ LOLUNIT_ASSERT_DIFFERENT(a4, e4);
+ LOLUNIT_ASSERT_NOT_EQUAL(a4, e4);
+ }
+
+ LOLUNIT_TEST(UnaryMinus)
+ {
+ quat a(1.0f, 3.0f, 2.0f, 4.0f);
+ quat b(-1.0f, -3.0f, -2.0f, -4.0f);
+
+ LOLUNIT_ASSERT_EQUAL(a, -b);
+ LOLUNIT_ASSERT_EQUAL(-a, b);
+ }
+
+ LOLUNIT_TEST(Conjugate)
+ {
+ quat a(1.0f, 3.0f, 2.0f, 4.0f);
+ quat b(-1.0f, -3.0f, -2.0f, 4.0f);
+
+ LOLUNIT_ASSERT_EQUAL(a, ~b);
+ LOLUNIT_ASSERT_EQUAL(~a, b);
+ }
+
+ LOLUNIT_TEST(Norm)
+ {
+ quat a(2.0f, -2.0f, -8.0f, 3.0f);
+
+ LOLUNIT_ASSERT_EQUAL(a.norm(), 81.0f);
+
+ quat b = a * ~a;
+ quat c(0.0f, 0.0f, 0.0f, a.norm());
+
+ LOLUNIT_ASSERT_EQUAL(b, c);
+
+ quat d(2.0f, 3.0f, -4.0f, -1.0f);
+
+ LOLUNIT_ASSERT_EQUAL((a * d).norm(), a.norm() * d.norm());
+ }
+
+ LOLUNIT_TEST(Base)
+ {
+ quat i(1.0f, 0.0f, 0.0f, 0.0f);
+ quat j(0.0f, 1.0f, 0.0f, 0.0f);
+ quat k(0.0f, 0.0f, 1.0f, 0.0f);
+ quat one(0.0f, 0.0f, 0.0f, 1.0f);
+
+ LOLUNIT_ASSERT_EQUAL(i.norm(), 1.0f);
+ LOLUNIT_ASSERT_EQUAL(j.norm(), 1.0f);
+ LOLUNIT_ASSERT_EQUAL(k.norm(), 1.0f);
+ LOLUNIT_ASSERT_EQUAL(one.norm(), 1.0f);
+
+ LOLUNIT_ASSERT_EQUAL(i * i, -one);
+ LOLUNIT_ASSERT_EQUAL(j * j, -one);
+ LOLUNIT_ASSERT_EQUAL(k * k, -one);
+ LOLUNIT_ASSERT_EQUAL(i * j * k, -one);
+
+ LOLUNIT_ASSERT_EQUAL(i * j, k);
+ LOLUNIT_ASSERT_EQUAL(j * i, -k);
+ LOLUNIT_ASSERT_EQUAL(j * k, i);
+ LOLUNIT_ASSERT_EQUAL(k * j, -i);
+ LOLUNIT_ASSERT_EQUAL(k * i, j);
+ LOLUNIT_ASSERT_EQUAL(i * k, -j);
+ }
+
+ LOLUNIT_TEST(Normalize)
+ {
+ quat a(2.0f, -2.0f, -8.0f, 3.0f);
+ quat b = normalize(a);
+
+ LOLUNIT_ASSERT_DOUBLES_EQUAL(b.norm(), 1.0, 1e-8);
+ }
+
+ LOLUNIT_TEST(Reciprocal)
+ {
+ quat a(2.0f, -2.0f, -8.0f, 3.0f);
+ quat b = re(a);
+
+ LOLUNIT_ASSERT_EQUAL(a * b, b * a);
+
+ quat c = 1.0f;
+
+ LOLUNIT_ASSERT_EQUAL(a * b, c);
+ }
+};
+
+} /* namespace lol */
+