Math: properly test conversion constexpr also in Vector subclasses.

src/Math/Test/Vector2Test.cpp

@@ -126,11 +126,18 @@ void Vector2Test::constructCopy() {
 }
 
 void Vector2Test::convert() {
-    Vec2 a{1.5f, 2.0f};
-    Vector2 b(1.5f, 2.0f);
-    CORRADE_COMPARE(Vector2(a), b);
-    CORRADE_COMPARE(Vec2(b).x, a.x);
-    CORRADE_COMPARE(Vec2(b).y, a.y);
+    constexpr Vec2 a{1.5f, 2.0f};
+    constexpr Vector2 b(1.5f, 2.0f);
+
+    constexpr Vector2 c(a);
+    CORRADE_COMPARE(c, b);
+
+    #ifndef CORRADE_GCC46_COMPATIBILITY
+    constexpr /* Not constexpr under GCC < 4.7 */
+    #endif
+    Vec2 d(b);
+    CORRADE_COMPARE(d.x, a.x);
+    CORRADE_COMPARE(d.y, a.y);
 }
 
 void Vector2Test::access() {

src/Math/Test/Vector3Test.cpp

@@ -139,12 +139,19 @@ void Vector3Test::constructCopy() {
 }
 
 void Vector3Test::convert() {
-    Vec3 a{1.5f, 2.0f, -3.5f};
-    Vector3 b(1.5f, 2.0f, -3.5f);
-    CORRADE_COMPARE(Vector3(a), b);
-    CORRADE_COMPARE(Vec3(b).x, a.x);
-    CORRADE_COMPARE(Vec3(b).y, a.y);
-    CORRADE_COMPARE(Vec3(b).z, a.z);
+    constexpr Vec3 a{1.5f, 2.0f, -3.5f};
+    constexpr Vector3 b(1.5f, 2.0f, -3.5f);
+
+    constexpr Vector3 c(a);
+    CORRADE_COMPARE(c, b);
+
+    #ifndef CORRADE_GCC46_COMPATIBILITY
+    constexpr /* Not constexpr under GCC < 4.7 */
+    #endif
+    Vec3 d(b);
+    CORRADE_COMPARE(d.x, a.x);
+    CORRADE_COMPARE(d.y, a.y);
+    CORRADE_COMPARE(d.z, a.z);
 }
 
 void Vector3Test::access() {

src/Math/Test/Vector4Test.cpp

@@ -136,13 +136,20 @@ void Vector4Test::constructCopy() {
 }
 
 void Vector4Test::convert() {
-    Vec4 a{1.5f, 2.0f, -3.5f, -0.5f};
-    Vector4 b(1.5f, 2.0f, -3.5f, -0.5f);
-    CORRADE_COMPARE(Vector4(a), b);
-    CORRADE_COMPARE(Vec4(b).x, a.x);
-    CORRADE_COMPARE(Vec4(b).y, a.y);
-    CORRADE_COMPARE(Vec4(b).z, a.z);
-    CORRADE_COMPARE(Vec4(b).w, a.w);
+    constexpr Vec4 a{1.5f, 2.0f, -3.5f, -0.5f};
+    constexpr Vector4 b(1.5f, 2.0f, -3.5f, -0.5f);
+
+    constexpr Vector4 c(a);
+    CORRADE_COMPARE(c, b);
+
+    #ifndef CORRADE_GCC46_COMPATIBILITY
+    constexpr /* Not constexpr under GCC < 4.7 */
+    #endif
+    Vec4 d(b);
+    CORRADE_COMPARE(d.x, a.x);
+    CORRADE_COMPARE(d.y, a.y);
+    CORRADE_COMPARE(d.z, a.z);
+    CORRADE_COMPARE(d.w, a.w);
 }
 
 void Vector4Test::access() {

src/Math/Test/VectorTest.cpp

@@ -202,17 +202,15 @@ void VectorTest::convert() {
     constexpr Vector3 b(1.5f, 2.0f, -3.5f);
 
     #ifndef CORRADE_GCC46_COMPATIBILITY
-    constexpr Vector3 c(a);
-    #else
-    Vector3 c(a); /* Not constexpr under GCC < 4.7 */
+    constexpr /* Not constexpr under GCC < 4.7 */
     #endif
+    Vector3 c(b);
     CORRADE_COMPARE(c, b);
 
     #ifndef CORRADE_GCC46_COMPATIBILITY
-    constexpr Vec3 d(b);
-    #else
-    Vec3 d(b); /* Not constexpr under GCC < 4.7 */
+    constexpr /* Not constexpr under GCC < 4.7 */
     #endif
+    Vec3 d(b);
     CORRADE_COMPARE(d.x, a.x);
     CORRADE_COMPARE(d.y, a.y);
     CORRADE_COMPARE(d.z, a.z);