Added Catch unit test framework. Added Vector2(i) unit test. Re-enabled CMake's RPATH feature.

test/src/Vector2.cpp

@@ -0,0 +1,222 @@
+#include <SFML/System/Vector2.hpp>
+#include <catch.hpp>
+
+// Use sf::Vector2i for tests. Test coverage is given, as there are no template specializations.
+
+SCENARIO("Constructing sf::Vector2")
+{
+    WHEN("default constructor is used")
+    {
+        sf::Vector2i vector;
+
+        THEN("x and y are 0")
+        {
+            CHECK(vector.x == 0);
+            CHECK(vector.y == 0);
+        }
+    }
+
+    WHEN("x, y constructor is used")
+    {
+        sf::Vector2i vector(1, 2);
+
+        THEN("x and y are set accordingly")
+        {
+            CHECK(vector.x == 1);
+            CHECK(vector.y == 2);
+        }
+    }
+
+    GIVEN("a vector of a different type")
+    {
+        sf::Vector2f sourceVector(1.0f, 2.0f);
+
+        WHEN("a vector is constructed from the another vector")
+        {
+            sf::Vector2i vector(sourceVector);
+
+            THEN("x and y are equal to the source vector's elements")
+            {
+                CHECK(vector.x == static_cast<int>(sourceVector.x));
+                CHECK(vector.y == static_cast<int>(sourceVector.y));
+            }
+        }
+    }
+}
+
+SCENARIO("sf::Vector2 algebra")
+{
+    GIVEN("a vector with x and y != 0")
+    {
+        sf::Vector2i vector(1, 2);
+
+        WHEN("the vector is negated")
+        {
+            sf::Vector2i negatedVector = -vector;
+
+            THEN("x and y are negated")
+            {
+                CHECK(negatedVector.x == -1);
+                CHECK(negatedVector.y == -2);
+            }
+        }
+    }
+
+    GIVEN("two different vectors with x and y != 0")
+    {
+        sf::Vector2i firstVector(2, 5);
+        sf::Vector2i secondVector(8, 3);
+
+        WHEN("one vector is increased by another one")
+        {
+            firstVector += secondVector;
+
+            THEN("the first operand's x and y are increased by the second one's")
+            {
+                CHECK(firstVector.x == 10);
+                CHECK(firstVector.y == 8);
+            }
+        }
+
+        WHEN("one vector is decreased by another one")
+        {
+            firstVector -= secondVector;
+
+            THEN("the first operand's x and y are decreased by the second one's")
+            {
+                CHECK(firstVector.x == -6);
+                CHECK(firstVector.y == 2);
+            }
+        }
+
+        WHEN("two vectors are summed")
+        {
+            sf::Vector2i result = firstVector + secondVector;
+
+            THEN("the result vector's x and y are the sum of the vectors' x and y")
+            {
+                CHECK(result.x == 10);
+                CHECK(result.y == 8);
+            }
+        }
+
+        WHEN("one vector is subtracted from another one")
+        {
+            sf::Vector2i result = firstVector - secondVector;
+
+            THEN("the result vector's x and y are the difference of the vectors' x and y")
+            {
+                CHECK(result.x == -6);
+                CHECK(result.y == 2);
+            }
+        }
+    }
+
+    GIVEN("a vector with x and y != 0 and a scalar value")
+    {
+        sf::Vector2i vector(26, 12);
+        int scalar(2);
+
+        WHEN("a vector is multiplied by a scalar")
+        {
+            sf::Vector2i result = vector * scalar;
+
+            THEN("the result vector's x and y are the product with the scalar")
+            {
+                CHECK(result.x == 52);
+                CHECK(result.y == 24);
+            }
+        }
+
+        WHEN("a scalar is multiplied by a vector")
+        {
+            sf::Vector2i result = scalar * vector ;
+
+            THEN("the result vector's x and y are the product with the scalar")
+            {
+                CHECK(result.x == 52);
+                CHECK(result.y == 24);
+            }
+        }
+
+        WHEN("a vector is multiplied by a scalar in itself")
+        {
+            vector *= scalar;
+
+            THEN("the vector's x and y are the product with the scalar")
+            {
+                CHECK(vector.x == 52);
+                CHECK(vector.y == 24);
+            }
+        }
+
+        WHEN("a vector is divided by a scalar")
+        {
+            sf::Vector2i result = vector / scalar;
+
+            THEN("the result vector's x and y are the division with the scalar")
+            {
+                CHECK(result.x == 13);
+                CHECK(result.y == 6);
+            }
+        }
+
+        WHEN("a vector is divided by a scalar in itself")
+        {
+            vector /= scalar;
+
+            THEN("the vector's x and y are the division with the scalar")
+            {
+                CHECK(vector.x == 13);
+                CHECK(vector.y == 6);
+            }
+        }
+    }
+
+    GIVEN("3 vectors, where two are equal")
+    {
+        sf::Vector2i firstEqualVector(1, 5);
+        sf::Vector2i secondEqualVector(1, 5);
+        sf::Vector2i differentVector(6, 9);
+
+        WHEN("equal vectors are tested for equality")
+        {
+            bool equal = (firstEqualVector == secondEqualVector);
+
+            THEN("the result is true")
+            {
+                CHECK(equal == true);
+            }
+        }
+
+        WHEN("different vectors are tested for equality")
+        {
+            bool equal = (firstEqualVector == differentVector);
+
+            THEN("the result is false")
+            {
+                CHECK(equal == false);
+            }
+        }
+
+        WHEN("equal vectors are tested for inequality")
+        {
+            bool equal = (firstEqualVector != secondEqualVector);
+
+            THEN("the result is false")
+            {
+                CHECK(equal == false);
+            }
+        }
+
+        WHEN("different vectors are tested for inequality")
+        {
+            bool equal = (firstEqualVector != differentVector);
+
+            THEN("the result is true")
+            {
+                CHECK(equal == true);
+            }
+        }
+    }
+}