diff --git a/include/wx/gdicmn.h b/include/wx/gdicmn.h
index 6a0ad01e88..2f5f8ee99f 100644
--- a/include/wx/gdicmn.h
+++ b/include/wx/gdicmn.h
@@ -435,6 +435,11 @@ inline wxSize operator*(unsigned long i, const wxSize& s)
     return wxSize(int(s.x * i), int(s.y * i));
 }
 
+inline wxSize operator/(const wxSize& s, double i)
+{
+    return wxSize(wxRound(s.x / i), wxRound(s.y / i));
+}
+
 inline wxSize operator*(const wxSize& s, double i)
 {
     return wxSize(wxRound(s.x * i), wxRound(s.y * i));
diff --git a/interface/wx/gdicmn.h b/interface/wx/gdicmn.h
index bccaa6888f..d3932fcf20 100644
--- a/interface/wx/gdicmn.h
+++ b/interface/wx/gdicmn.h
@@ -1064,12 +1064,19 @@ public:
     /**
         @name Miscellaneous operators
 
+        Sizes can be added to or subtracted from each other or divided or
+        multiplied by a number.
+
         Note that these operators are documented as class members
         (to make them easier to find) but, as their prototype shows,
         they are implemented as global operators; note that this is
         transparent to the user but it helps to understand why the
         following functions are documented to take the wxSize they
         operate on as an explicit argument.
+
+        Also note that using @c double factor may result in rounding errors,
+        as wxSize always stores @c int coordinates and the result is always
+        rounded.
     */
     //@{
     wxSize& operator=(const wxSize& sz);
@@ -1083,10 +1090,15 @@ public:
     wxSize& operator -=(const wxSize& sz);
 
     wxSize operator /(const wxSize& sz, int factor);
+    wxSize operator /(const wxSize& sz, double factor);
     wxSize operator *(const wxSize& sz, int factor);
+    wxSize operator *(const wxSize& sz, double factor);
     wxSize operator *(int factor, const wxSize& sz);
+    wxSize operator *(double factor, const wxSize& sz);
     wxSize& operator /=(int factor);
+    wxSize& operator /=(double factor);
     wxSize& operator *=(int factor);
+    wxSize& operator *=(double factor);
     //@}
 };
 
diff --git a/tests/geometry/point.cpp b/tests/geometry/point.cpp
index 30ca4181c0..aaf2867bd2 100644
--- a/tests/geometry/point.cpp
+++ b/tests/geometry/point.cpp
@@ -19,49 +19,7 @@
 
 #include "wx/math.h"
 
-// ----------------------------------------------------------------------------
-// test class
-// ----------------------------------------------------------------------------
-
-class PointTestCase : public CppUnit::TestCase
-{
-public:
-    PointTestCase() { }
-
-private:
-    CPPUNIT_TEST_SUITE( PointTestCase );
-        CPPUNIT_TEST( Operators );
-    CPPUNIT_TEST_SUITE_END();
-
-    void Operators();
-
-    wxDECLARE_NO_COPY_CLASS(PointTestCase);
-};
-
-class RealPointTestCase : public CppUnit::TestCase
-{
-public:
-    RealPointTestCase() { }
-
-private:
-    CPPUNIT_TEST_SUITE( RealPointTestCase );
-        CPPUNIT_TEST( Operators );
-    CPPUNIT_TEST_SUITE_END();
-
-    void Operators();
-
-    wxDECLARE_NO_COPY_CLASS(RealPointTestCase);
-};
-
-// register in the unnamed registry so that these tests are run by default
-CPPUNIT_TEST_SUITE_REGISTRATION( PointTestCase );
-CPPUNIT_TEST_SUITE_REGISTRATION( RealPointTestCase );
-
-// also include in its own registry so that these tests can be run alone
-CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( PointTestCase, "PointTestCase" );
-CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( RealPointTestCase, "RealPointTestCase" );
-
-void PointTestCase::Operators()
+TEST_CASE("wxPoint::Operators", "[point]")
 {
     wxPoint p1(1,2);
     wxPoint p2(6,3);
@@ -69,48 +27,43 @@ void PointTestCase::Operators()
     wxPoint p4(5,1);
     wxPoint p5 = p2 + p1;
     wxPoint p6 = p2 - p1;
-    CPPUNIT_ASSERT( p3.x == p5.x );
-    CPPUNIT_ASSERT( p3.y == p5.y );
-    CPPUNIT_ASSERT( p4.x == p6.x );
-    CPPUNIT_ASSERT( p4.y == p6.y );
-    CPPUNIT_ASSERT( p3 == p5 );
-    CPPUNIT_ASSERT( p4 == p6 );
-    CPPUNIT_ASSERT( p3 != p4 );
+    CHECK( p3.x == p5.x );
+    CHECK( p3.y == p5.y );
+    CHECK( p4.x == p6.x );
+    CHECK( p4.y == p6.y );
+    CHECK( p3 == p5 );
+    CHECK( p4 == p6 );
+    CHECK( p3 != p4 );
     p5 = p2; p5 += p1;
     p6 = p2; p6 -= p1;
-    CPPUNIT_ASSERT( p3 == p5 );
-    CPPUNIT_ASSERT( p4 == p6 );
+    CHECK( p3 == p5 );
+    CHECK( p4 == p6 );
     wxSize s(p1.x,p1.y);
     p5 = p2; p5 = p2 + s;
     p6 = p2; p6 = p2 - s;
-    CPPUNIT_ASSERT( p3 == p5 );
-    CPPUNIT_ASSERT( p4 == p6 );
+    CHECK( p3 == p5 );
+    CHECK( p4 == p6 );
     p5 = p2; p5 = s + p2;
     p6 = p2; p6 = s - p2;
-    CPPUNIT_ASSERT( p3 == p5 );
-    CPPUNIT_ASSERT( p4 == -p6 );
+    CHECK( p3 == p5 );
+    CHECK( p4 == -p6 );
     p5 = p2; p5 += s;
     p6 = p2; p6 -= s;
-    CPPUNIT_ASSERT( p3 == p5 );
-    CPPUNIT_ASSERT( p4 == p6 );
+    CHECK( p3 == p5 );
+    CHECK( p4 == p6 );
 }
 
-void RealPointTestCase::Operators()
+TEST_CASE("wxRealPoint::Operators", "[point]")
 {
-    const double EPSILON = 0.00001;
     wxRealPoint p1(1.2,3.4);
     wxRealPoint p2(8.7,5.4);
     wxRealPoint p3(9.9,8.8);
     wxRealPoint p4(7.5,2.0);
     wxRealPoint p5 = p2 + p1;
     wxRealPoint p6 = p2 - p1;
-    /*
-    CPPUNIT_ASSERT( p3 == p5 );
-    CPPUNIT_ASSERT( p4 == p6 );
-    CPPUNIT_ASSERT( p3 != p4 );
-    */
-    CPPUNIT_ASSERT( fabs( p3.x - p5.x ) < EPSILON );
-    CPPUNIT_ASSERT( fabs( p3.y - p5.y ) < EPSILON );
-    CPPUNIT_ASSERT( fabs( p4.x - p6.x ) < EPSILON );
-    CPPUNIT_ASSERT( fabs( p4.y - p6.y ) < EPSILON );
+    CHECK( p3.x == Approx(p5.x) );
+    CHECK( p3.y == Approx(p5.y) );
+    CHECK( p4.x == Approx(p6.x) );
+    CHECK( p4.y == Approx(p6.y) );
+    CHECK( p3.x != Approx(p4.x) );
 }
diff --git a/tests/geometry/size.cpp b/tests/geometry/size.cpp
index fb102da679..15ede6e524 100644
--- a/tests/geometry/size.cpp
+++ b/tests/geometry/size.cpp
@@ -17,65 +17,37 @@
     #include "wx/gdicmn.h"
 #endif // WX_PRECOMP
 
-// ----------------------------------------------------------------------------
-// test class
-// ----------------------------------------------------------------------------
+#include "asserthelper.h"
 
-class SizeTestCase : public CppUnit::TestCase
-{
-public:
-    SizeTestCase() { }
-
-private:
-    CPPUNIT_TEST_SUITE( SizeTestCase );
-        CPPUNIT_TEST( Operators );
-    CPPUNIT_TEST_SUITE_END();
-
-    void Operators();
-
-    wxDECLARE_NO_COPY_CLASS(SizeTestCase);
-};
-
-// register in the unnamed registry so that these tests are run by default
-CPPUNIT_TEST_SUITE_REGISTRATION( SizeTestCase );
-
-// also include in its own registry so that these tests can be run alone
-CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( SizeTestCase, "SizeTestCase" );
-
-void SizeTestCase::Operators()
+TEST_CASE("wxSize::Operators", "[size]")
 {
     wxSize s1(1,2);
     wxSize s2(3,4);
     wxSize s3;
 
     s3 = s1 + s2;
-    CPPUNIT_ASSERT( s3.GetWidth()==4 );
-    CPPUNIT_ASSERT( s3.GetHeight()==6 );
+    CHECK( s3 == wxSize(4, 6) );
     s3 = s2 - s1;
-    CPPUNIT_ASSERT( s3.GetWidth()==2 );
-    CPPUNIT_ASSERT( s3.GetHeight()==2 );
+    CHECK( s3 == wxSize(2, 2) );
     s3 = s1 * 2;
-    CPPUNIT_ASSERT( s3.GetWidth()==2 );
-    CPPUNIT_ASSERT( s3.GetHeight()==4 );
+    CHECK( s3 == wxSize(2, 4) );
     s3 = 2 * s1;
-    CPPUNIT_ASSERT( s3.GetWidth()==2 );
-    CPPUNIT_ASSERT( s3.GetHeight()==4 );
+    CHECK( s3 == wxSize(2, 4) );
     s3 = s3 / 2;
-    CPPUNIT_ASSERT( s3.GetWidth()==1 );
-    CPPUNIT_ASSERT( s3.GetHeight()==2 );
+    CHECK( s3 == wxSize(1, 2) );
 
     s3 = s2;
-    CPPUNIT_ASSERT( s3 != s1 );
+    CHECK( s3 != s1 );
     s3 = s1;
-    CPPUNIT_ASSERT( s3 == s1 );
+    CHECK( s3 == s1 );
     s3 += s2;
-    CPPUNIT_ASSERT( s3.GetWidth()==4 );
-    CPPUNIT_ASSERT( s3.GetHeight()==6 );
+    CHECK( s3 == wxSize(4, 6) );
     s3 -= s2;
-    CPPUNIT_ASSERT( s3 == s1 );
+    CHECK( s3 == s1 );
     s3 *= 2;
-    CPPUNIT_ASSERT( s3.GetWidth()==2 );
-    CPPUNIT_ASSERT( s3.GetHeight()==4 );
+    CHECK( s3 == wxSize(2, 4) );
     s3 /= 2;
-    CPPUNIT_ASSERT( s3 == s1 );
+    CHECK( s3 == s1 );
+
+    CHECK( wxSize(6, 9) / 1.5 == wxSize(4, 6) );
 }