Added quaternion class

unit-tests/quaternion-tests.cpp

@@ -0,0 +1,55 @@
+// include the unit test framework first
+#include <catch2/catch_test_macros.hpp>
+#include <catch2/matchers/catch_matchers_floating_point.hpp>
+
+// include the module you're going to test next
+#include "Quaternion.h"
+
+// any other libraries
+#include <array>
+#include <cmath>
+#include <iostream>
+
+TEST_CASE("Vector Math", "Vector")
+{
+    Quaternion q1{1, 2, 3, 4};
+    Quaternion q2{5, 6, 7, 8};
+
+    SECTION("Initialization")
+    {
+        // explicit initialization
+        REQUIRE(q1.v1 == 1);
+        REQUIRE(q1.v2 == 2);
+        REQUIRE(q1.v3 == 3);
+        REQUIRE(q1.w == 4);
+
+        // fill initialization
+        Quaternion q3{0};
+        REQUIRE(q3.v1 == 0);
+        REQUIRE(q3.v2 == 0);
+        REQUIRE(q3.v3 == 0);
+        REQUIRE(q3.w == 0);
+
+        // copy initialization
+        Quaternion q4{q1};
+        REQUIRE(q4.v1 == 1);
+        REQUIRE(q4.v2 == 2);
+        REQUIRE(q4.v3 == 3);
+        REQUIRE(q4.w == 4);
+
+        // matrix initialization
+        Matrix<1, 4> m1{1, 2, 3, 4};
+        Quaternion q5{m1};
+        REQUIRE(q5.v1 == 1);
+        REQUIRE(q5.v2 == 2);
+        REQUIRE(q5.v3 == 3);
+        REQUIRE(q5.w == 4);
+
+        // array initialization
+        Quaternion q6{std::array<float, 4>{1, 2, 3, 4}};
+        REQUIRE(q6.v1 == 1);
+        REQUIRE(q6.v2 == 2);
+        REQUIRE(q6.v3 == 3);
+        REQUIRE(q6.w == 4);
+    }
+}