+///////////////////////////////////////////////////////////////////////////////
+// Name: tests/geometry/region.cpp
+// Purpose: wxRegion unit test
+// Author: Vadim Zeitlin
+// Created: 2011-10-12
+// RCS-ID: $Id$
+// Copyright: (c) 2011 Vadim Zeitlin <vadim@wxwidgets.org>
+///////////////////////////////////////////////////////////////////////////////
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#include "testprec.h"
+
+#ifdef __BORLANDC__
+ #pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
+ #include "wx/region.h"
+#endif // WX_PRECOMP
+
+#include "wx/iosfwrap.h"
+
+// ----------------------------------------------------------------------------
+// helper functions
+// ----------------------------------------------------------------------------
+
+namespace
+{
+
+// This function could be easily added to wxRegionIterator itself, where it
+// could be implemented far more efficiently as all major platforms store the
+// number of rectangles anyhow, but as we only use it for debugging purposes,
+// just keep it here for now.
+unsigned GetRectsCount(const wxRegion& rgn)
+{
+ unsigned count = 0;
+ for ( wxRegionIterator iter(rgn); iter.HaveRects(); ++iter )
+ count++;
+ return count;
+}
+
+} // anonymous namespace
+
+// this operator is needed to use CPPUNIT_ASSERT_EQUAL with wxRegions
+std::ostream& operator<<(std::ostream& os, const wxRegion& rgn)
+{
+ wxRect r = rgn.GetBox();
+ os << "# rects = " << GetRectsCount(rgn)
+ << "; bounding box {"
+ << r.x << ", " << r.y << ", " << r.width << ", " << r.height
+ << "}";
+ return os;
+}
+
+// ----------------------------------------------------------------------------
+// test class
+// ----------------------------------------------------------------------------
+
+class RegionTestCase : public CppUnit::TestCase
+{
+public:
+ RegionTestCase() { }
+
+private:
+ CPPUNIT_TEST_SUITE( RegionTestCase );
+ CPPUNIT_TEST( Validity );
+ CPPUNIT_TEST_SUITE_END();
+
+ void Validity();
+
+ wxDECLARE_NO_COPY_CLASS(RegionTestCase);
+};
+
+// register in the unnamed registry so that these tests are run by default
+CPPUNIT_TEST_SUITE_REGISTRATION( RegionTestCase );
+
+// also include in its own registry so that these tests can be run alone
+CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( RegionTestCase, "RegionTestCase" );
+
+void RegionTestCase::Validity()
+{
+ wxRegion r;
+
+ CPPUNIT_ASSERT_MESSAGE
+ (
+ "Default constructed region must be invalid",
+ !r.IsOk()
+ );
+
+ CPPUNIT_ASSERT_MESSAGE
+ (
+ "Invalid region should be empty",
+ r.IsEmpty()
+ );
+
+ // Offsetting an invalid region doesn't make sense.
+ WX_ASSERT_FAILS_WITH_ASSERT( r.Offset(1, 1) );
+
+ CPPUNIT_ASSERT_MESSAGE
+ (
+ "Combining with a valid region should create a valid region",
+ r.Union(0, 0, 10, 10)
+ );
+
+ CPPUNIT_ASSERT_EQUAL_MESSAGE
+ (
+ "Union() with invalid region should give the same region",
+ wxRegion(0, 0, 10, 10),
+ r
+ );
+}
projects / wxWidgets.git / commitdiff
