Translated tests for Math/Lerp

Test/Math__Lerp.cpp

@@ -0,0 +1,106 @@
+#include "Catch2.h"
+#include <Eule/Math.h>
+
+using namespace Eule;
+
+/** Equivalence classes:
+*		-- a < b, 0 < t < 1		-> a < result < b
+*		-- a > b, 0 < t < 1		-> b < result < a
+*		-- a == b, 0 < t < 1	-> result == b
+* 
+*		-- a < b, t < 0			-> result < a
+*		-- a > b, t < 0			-> result > a
+*		-- a == b, t < 0		-> result == b
+* 
+* 		-- a < b, t > 1			-> result > b
+*		-- a > b, t > 1			-> result < b
+*		-- a == b, t > 1		-> result == b
+* 
+*		-- a == 0
+*		-- b == 0
+*		-- a == b == 0
+*/
+
+// -- a < b, 0 < t < 1		-> a < result < b
+TEST_CASE(__FILE__"/a_lt_b___0_lt_t_lt_1", "[Math][Lerp]")
+{
+    REQUIRE(Math::Lerp(1, 2, 0.75) == 1.75);
+    return;
+}
+
+// -- a > b, 0 < t < 1		-> b < result < a
+TEST_CASE(__FILE__"/a_gt_b___0_lt_t_lt_1", "[Math][Lerp]")
+{
+    REQUIRE(Math::Lerp(2, 1, 0.75) == 1.25);
+    return;
+}
+
+// -- a == b, 0 < t < 1		-> result == b
+TEST_CASE(__FILE__"/a_eq_b___0_lt_t_lt_1", "[Math][Lerp]")
+{
+    REQUIRE(Math::Lerp(2, 2, 0.75) == 2.0);
+    return;
+}
+
+// -- a < b, t < 0			-> result < a
+TEST_CASE(__FILE__"/a_lt_b___t_lt_0", "[Math][Lerp]")
+{
+    REQUIRE(Math::Lerp(1, 2, -0.75) == 0.25);
+    return;
+}
+
+// -- a > b, t < 0			-> result > a
+TEST_CASE(__FILE__"/a_gt_b___t_lt_0", "[Math][Lerp]")
+{
+    REQUIRE(Math::Lerp(2, 1, -0.75) == 2.75);
+    return;
+}
+
+// -- a == b, t < 0			-> result == b
+TEST_CASE(__FILE__"/a_eq_b___t_lt_0", "[Math][Lerp]")
+{
+    REQUIRE(Math::Lerp(2, 2, -0.75) == 2.0);
+    return;
+}
+
+// -- a < b, t > 1			-> result > b
+TEST_CASE(__FILE__"/a_lt_b___t_gt_1", "[Math][Lerp]")
+{
+    REQUIRE(Math::Lerp(1, 2, 1.5) == 2.5);
+    return;
+}
+
+// -- a > b, t > 1			-> result < b
+TEST_CASE(__FILE__"/a_gt_b___t_gt_1", "[Math][Lerp]")
+{
+    REQUIRE(Math::Lerp(2, 1, 1.5) == 0.5);
+    return;
+}
+
+// -- a == b, t > 1			-> result == b
+TEST_CASE(__FILE__"/a_eq_b___t_gt_1", "[Math][Lerp]")
+{
+    REQUIRE(Math::Lerp(1, 1, 1.5) == 1.0);
+    return;
+}
+
+// -- a == 0
+TEST_CASE(__FILE__"/a_eq_0", "[Math][Lerp]")
+{
+    REQUIRE(Math::Lerp(0, 3, 0.75) == 2.25);
+    return;
+}
+
+// -- b == 0
+TEST_CASE(__FILE__"/b_eq_0", "[Math][Lerp]")
+{
+    REQUIRE(Math::Lerp(3, 0, 0.75) == 0.75);
+    return;
+}
+
+// -- a == b == 0
+TEST_CASE(__FILE__"/a_eq_b_eq_0", "[Math][Lerp]")
+{
+    REQUIRE(Math::Lerp(0, 0, 0.75) == 0.0);
+    return;
+}