Add (a very simple for now) wxBoxSizer unit test.

Only check that layout for a single sizer item works correctly for now.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63703 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

tests/sizers/boxsizer.cpp

@@ -0,0 +1,107 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        tests/sizers/boxsizer.cpp
+// Purpose:     Unit tests for wxBoxSizer
+// Author:      Vadim Zeitlin
+// Created:     2010-03-06
+// RCS-ID:      $Id$
+// Copyright:   (c) 2010 Vadim Zeitlin <vadim@wxwidgets.org>
+///////////////////////////////////////////////////////////////////////////////
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#include "testprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
+    #include "wx/app.h"
+    #include "wx/sizer.h"
+#endif // WX_PRECOMP
+
+inline std::ostream& operator<<(std::ostream& o, const wxSize& s)
+{
+    return o << s.x << 'x' << s.y;
+}
+
+// ----------------------------------------------------------------------------
+// test class
+// ----------------------------------------------------------------------------
+
+class BoxSizerTestCase : public CppUnit::TestCase
+{
+public:
+    BoxSizerTestCase() { }
+
+    virtual void setUp();
+    virtual void tearDown();
+
+private:
+    CPPUNIT_TEST_SUITE( BoxSizerTestCase );
+        CPPUNIT_TEST( Size1 );
+    CPPUNIT_TEST_SUITE_END();
+
+    void Size1();
+
+    wxWindow *m_win;
+    wxSizer *m_sizer;
+
+    DECLARE_NO_COPY_CLASS(BoxSizerTestCase)
+};
+
+// register in the unnamed registry so that these tests are run by default
+CPPUNIT_TEST_SUITE_REGISTRATION( BoxSizerTestCase );
+
+// also include in it's own registry so that these tests can be run alone
+CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( BoxSizerTestCase, "BoxSizerTestCase" );
+
+// ----------------------------------------------------------------------------
+// test initialization
+// ----------------------------------------------------------------------------
+
+void BoxSizerTestCase::setUp()
+{
+    m_win = new wxWindow(wxTheApp->GetTopWindow(), wxID_ANY);
+    m_win->SetClientSize(127, 35);
+
+    m_sizer = new wxBoxSizer(wxHORIZONTAL);
+    m_win->SetSizer(m_sizer);
+}
+
+void BoxSizerTestCase::tearDown()
+{
+    delete m_win;
+    m_win = NULL;
+
+    m_sizer = NULL;
+}
+
+// ----------------------------------------------------------------------------
+// tests themselves
+// ----------------------------------------------------------------------------
+
+void BoxSizerTestCase::Size1()
+{
+    const wxSize sizeTotal = m_win->GetClientSize();
+    const wxSize sizeChild = sizeTotal / 2;
+
+    wxWindow * const
+        child = new wxWindow(m_win, wxID_ANY, wxDefaultPosition, sizeChild);
+    m_sizer->Add(child);
+    m_win->Layout();
+    CPPUNIT_ASSERT_EQUAL( sizeChild, child->GetSize() );
+;
+    m_sizer->Clear();
+    m_sizer->Add(child, wxSizerFlags(1));
+    m_win->Layout();
+    CPPUNIT_ASSERT_EQUAL( wxSize(sizeTotal.x, sizeChild.y), child->GetSize() );
+
+    m_sizer->Clear();
+    m_sizer->Add(child, wxSizerFlags(1).Expand());
+    m_win->Layout();
+    CPPUNIT_ASSERT_EQUAL( sizeTotal, child->GetSize() );
+}
+