DebugTools: include the tests only if the features are actually built.

src/Magnum/DebugTools/Test/CMakeLists.txt

@@ -23,10 +23,15 @@
 #   DEALINGS IN THE SOFTWARE.
 #
 
-corrade_add_test(DebugToolsCapsuleRendererTest CapsuleRendererTest.cpp LIBRARIES MagnumMathTestLib)
-corrade_add_test(DebugToolsCylinderRendererTest CylinderRendererTest.cpp LIBRARIES MagnumMathTestLib)
-corrade_add_test(DebugToolsForceRendererTest ForceRendererTest.cpp LIBRARIES MagnumMathTestLib)
-corrade_add_test(DebugToolsLineSegmentRendererTest LineSegmentRendererTest.cpp LIBRARIES MagnumMathTestLib)
+if(WITH_SHAPES)
+    corrade_add_test(DebugToolsCapsuleRendererTest CapsuleRendererTest.cpp LIBRARIES MagnumMathTestLib)
+    corrade_add_test(DebugToolsCylinderRendererTest CylinderRendererTest.cpp LIBRARIES MagnumMathTestLib)
+    corrade_add_test(DebugToolsLineSegmentRendererTest LineSegmentRendererTest.cpp LIBRARIES MagnumMathTestLib)
+endif()
+
+if(WITH_SCENEGRAPH)
+    corrade_add_test(DebugToolsForceRendererTest ForceRendererTest.cpp LIBRARIES MagnumMathTestLib)
+endif()
 
 if(BUILD_GL_TESTS)
     corrade_add_test(DebugToolsBufferDataGLTest BufferDataGLTest.cpp LIBRARIES MagnumDebugTools ${GL_TEST_LIBRARIES})