Math: debug output operator for Rectangle.

src/Math/Geometry/Rectangle.h

@@ -105,6 +105,15 @@ template<class T> class Rectangle {
         Vector2<T> _topRight;
 };
 
+/** @debugoperator{Magnum::Math::Geometry::Rectangle} */
+template<class T> Corrade::Utility::Debug operator<<(Corrade::Utility::Debug debug, const Rectangle<T>& value) {
+    debug << "Rectangle({";
+    debug.setFlag(Corrade::Utility::Debug::SpaceAfterEachValue, false);
+    debug << value.left() << ", " << value.bottom() << "}, {" << value.right() << ", " << value.top() <<"})";
+    debug.setFlag(Corrade::Utility::Debug::SpaceAfterEachValue, true);
+    return debug;
+}
+
 }}}
 
 #endif

src/Math/Geometry/Test/RectangleTest.cpp

@@ -15,6 +15,8 @@
 
 #include "RectangleTest.h"
 
+#include <sstream>
+
 #include "Rectangle.h"
 
 CORRADE_TEST_MAIN(Magnum::Math::Geometry::Test::RectangleTest)
@@ -28,7 +30,8 @@ RectangleTest::RectangleTest() {
     addTests(&RectangleTest::access,
              &RectangleTest::compare,
              &RectangleTest::construct,
-             &RectangleTest::size);
+             &RectangleTest::size,
+             &RectangleTest::debug);
 }
 
 void RectangleTest::access() {
@@ -56,8 +59,8 @@ void RectangleTest::compare() {
 }
 
 void RectangleTest::construct() {
-    CORRADE_VERIFY(Rectanglei() == Rectanglei({0, 0}, {0, 0}));
-    CORRADE_VERIFY(Rectanglei::fromSize({3, 5}, {23, 78}) == Rectanglei({3, 5}, {26, 83}));
+    CORRADE_COMPARE(Rectanglei(), Rectanglei({0, 0}, {0, 0}));
+    CORRADE_COMPARE(Rectanglei::fromSize({3, 5}, {23, 78}), Rectanglei({3, 5}, {26, 83}));
 }
 
 void RectangleTest::size() {
@@ -68,4 +71,11 @@ void RectangleTest::size() {
     CORRADE_COMPARE(rect.height(), 7);
 }
 
+void RectangleTest::debug() {
+    std::ostringstream o;
+    Corrade::Utility::Debug(&o) << Rectanglei({34, 23}, {47, 30});
+
+    CORRADE_COMPARE(o.str(), "Rectangle({34, 23}, {47, 30})\n");
+}
+
 }}}}

src/Math/Geometry/Test/RectangleTest.h

@@ -27,6 +27,8 @@ class RectangleTest: public Corrade::TestSuite::Tester {
         void compare();
         void construct();
         void size();
+
+        void debug();
 };
 
 }}}}