PR04

Author: ben18mk

unittests/renderer/CameraTest.java

@@ -0,0 +1,86 @@
+package renderer;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import org.junit.jupiter.api.Test;
+
+import primitives.*;
+
+/**
+ * Testing Camera Class
+ * 
+ * @author Dan, Benjamin Mamistvalov, Eyal Nathan
+ *
+ */
+class CameraTest {
+	static final Point ZERO_POINT = new Point(0, 0, 0);
+
+	/**
+	 * Test method for
+	 * {@link renderer.Camera(primitives.Point, primitives.Vector, primitives.Vector)}
+	 */
+	@Test
+	void testConstructor() {
+		Vector v = new Vector(1, 0, 0);
+
+		// =============== Boundary Values Tests ==================
+		// BVA01: vTo and vUp are not orthogonal
+		assertThrows(
+				IllegalArgumentException.class,
+				() -> new Camera(ZERO_POINT, v, new Vector(1, 1, 0)),
+				"BVA01: ctor() does not throw an exception when vTo and vUp are not orthogonal"
+		);
+
+		// BVA02: vTo and vUp are the same vector
+		assertThrows(
+				IllegalArgumentException.class,
+				() -> new Camera(ZERO_POINT, v, v),
+				"BVA02: ctor() does not throw an exception when vTo and vUp are the same vector"
+		);
+	}
+
+	/**
+	 * Test method for
+	 * {@link renderer.Camera#constructRay(int, int, int, int)}.
+	 */
+	@Test
+	void testConstructRay() {
+		Camera camera = new Camera(
+				ZERO_POINT, new Vector(0, 0, -1),
+				new Vector(0, -1, 0)
+		).setVPDistance(10);
+		String badRay = "Bad ray";
+
+		// ============ Equivalence Partitions Tests ==============
+		// EP01: 4X4 Inside (1,1)
+		assertEquals(new Ray(ZERO_POINT, new Vector(1, -1, -10)),
+				camera.setVPSize(8, 8).constructRay(4, 4, 1, 1), badRay);
+
+		// =============== Boundary Values Tests ==================
+		// BVA01: 3X3 Center (1,1)
+		assertEquals(new Ray(ZERO_POINT, new Vector(0, 0, -10)),
+				camera.setVPSize(6, 6).constructRay(3, 3, 1, 1), badRay);
+
+		// BVA02: 3X3 Center of Upper Side (0,1)
+		assertEquals(new Ray(ZERO_POINT, new Vector(0, -2, -10)),
+				camera.setVPSize(6, 6).constructRay(3, 3, 1, 0), badRay);
+
+		// BVA03: 3X3 Center of Left Side (1,0)
+		assertEquals(new Ray(ZERO_POINT, new Vector(2, 0, -10)),
+				camera.setVPSize(6, 6).constructRay(3, 3, 0, 1), badRay);
+
+		// BVA04: 3X3 Corner (0,0)
+		assertEquals(new Ray(ZERO_POINT, new Vector(2, -2, -10)),
+				camera.setVPSize(6, 6).constructRay(3, 3, 0, 0), badRay);
+
+		// BVA05: 4X4 Corner (0,0)
+		assertEquals(new Ray(ZERO_POINT, new Vector(3, -3, -10)),
+				camera.setVPSize(8, 8).constructRay(4, 4, 0, 0), badRay);
+
+		// BVA06: 4X4 Side (0,1)
+		assertEquals(new Ray(ZERO_POINT, new Vector(1, -3, -10)),
+				camera.setVPSize(8, 8).constructRay(4, 4, 1, 0), badRay);
+
+	}
+
+}