check that HWNDs are non-NULL before doing anything with them (part of patch 1866053)

[wxWidgets.git] / tests / controls / textctrltest.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        tests/textctrl/textctrltest.cpp
// Purpose:     wxTextCtrl unit test
// Author:      Vadim Zeitlin
// Created:     2007-09-25
// RCS-ID:      $Id$
// Copyright:   (c) 2007 Vadim Zeitlin <vadim@wxwidgets.org>
///////////////////////////////////////////////////////////////////////////////

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

#include "testprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#ifndef WX_PRECOMP
    #include "wx/app.h"
    #include "wx/textctrl.h"
#endif // WX_PRECOMP

// ----------------------------------------------------------------------------
// test class
// ----------------------------------------------------------------------------

class TextCtrlTestCase : public CppUnit::TestCase
{
public:
    TextCtrlTestCase() { }

    virtual void setUp();
    virtual void tearDown();

private:
    CPPUNIT_TEST_SUITE( TextCtrlTestCase );
        CPPUNIT_TEST( SetValue );
        CPPUNIT_TEST( TextChangeEvents );
    CPPUNIT_TEST_SUITE_END();

    void SetValue();
    void TextChangeEvents();

    wxTextCtrl *m_text;
    wxFrame *m_frame;

    DECLARE_NO_COPY_CLASS(TextCtrlTestCase)
};

// register in the unnamed registry so that these tests are run by default
CPPUNIT_TEST_SUITE_REGISTRATION( TextCtrlTestCase );

// also include in it's own registry so that these tests can be run alone
CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( TextCtrlTestCase, "TextCtrlTestCase" );

// ----------------------------------------------------------------------------
// test initialization
// ----------------------------------------------------------------------------

void TextCtrlTestCase::setUp()
{
    m_text = new wxTextCtrl(wxTheApp->GetTopWindow(), wxID_ANY);
}

void TextCtrlTestCase::tearDown()
{
    delete m_text;
    m_text = NULL;
}

// ----------------------------------------------------------------------------
// tests themselves
// ----------------------------------------------------------------------------

void TextCtrlTestCase::SetValue()
{
    CPPUNIT_ASSERT( m_text->IsEmpty() );

    m_text->SetValue("foo");
    WX_ASSERT_STR_EQUAL( "foo", m_text->GetValue() );

    m_text->SetValue("");
    CPPUNIT_ASSERT( m_text->IsEmpty() );

    m_text->SetValue("hi");
    WX_ASSERT_STR_EQUAL( "hi", m_text->GetValue() );

    m_text->SetValue("bye");
    WX_ASSERT_STR_EQUAL( "bye", m_text->GetValue() );
}

void TextCtrlTestCase::TextChangeEvents()
{
    class TextTestEventHandler : public wxEvtHandler
    {
    public:
        TextTestEventHandler() { m_events = 0; }

        // calling this automatically resets the events counter
        int GetEvents()
        {
            const int events = m_events;
            m_events = 0;
            return events;
        }

        void OnText(wxCommandEvent& WXUNUSED(event)) { m_events++; }

    private:
        int m_events;
    } handler;

    m_text->Connect(wxEVT_COMMAND_TEXT_UPDATED,
                    wxCommandEventHandler(TextTestEventHandler::OnText),
                    NULL,
                    &handler);

    // notice that SetValue() generates an event even if the text didn't change
    m_text->SetValue("");
    CPPUNIT_ASSERT_EQUAL( 1, handler.GetEvents() );

    m_text->SetValue("foo");
    CPPUNIT_ASSERT_EQUAL( 1, handler.GetEvents() );

    m_text->SetValue("foo");
    CPPUNIT_ASSERT_EQUAL( 1, handler.GetEvents() );

    m_text->ChangeValue("bar");
    CPPUNIT_ASSERT_EQUAL( 0, handler.GetEvents() );

    m_text->AppendText("bar");
    CPPUNIT_ASSERT_EQUAL( 1, handler.GetEvents() );

    m_text->Replace(3, 6, "baz");
    CPPUNIT_ASSERT_EQUAL( 1, handler.GetEvents() );

    m_text->Remove(0, 3);
    CPPUNIT_ASSERT_EQUAL( 1, handler.GetEvents() );

    m_text->WriteText("foo");
    CPPUNIT_ASSERT_EQUAL( 1, handler.GetEvents() );

    m_text->Clear();
    CPPUNIT_ASSERT_EQUAL( 1, handler.GetEvents() );
}