X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b2b0bee6d822b05fea419e8bf24ab4009cb17ac4..e5354813181461c154044d52a464b29fa1aefaf8:/tests/controls/textctrltest.cpp

diff --git a/tests/controls/textctrltest.cpp b/tests/controls/textctrltest.cpp
index 04e5939a5e..dee9da5822 100644
--- a/tests/controls/textctrltest.cpp
+++ b/tests/controls/textctrltest.cpp
@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////////
-// Name:        tests/textctrl/textctrltest.cpp
+// Name:        tests/controls/textctrltest.cpp
 // Purpose:     wxTextCtrl unit test
 // Author:      Vadim Zeitlin
 // Created:     2007-09-25
@@ -13,6 +13,8 @@
 
 #include "testprec.h"
 
+#if wxUSE_TEXTCTRL
+
 #ifdef __BORLANDC__
     #pragma hdrstop
 #endif
@@ -22,11 +24,20 @@
     #include "wx/textctrl.h"
 #endif // WX_PRECOMP
 
+#include "wx/scopeguard.h"
+
+#include "textentrytest.h"
+#include "testableframe.h"
+#include "asserthelper.h"
+#include "wx/uiaction.h"
+
+static const int TEXT_HEIGHT = 200;
+
 // ----------------------------------------------------------------------------
 // test class
 // ----------------------------------------------------------------------------
 
-class TextCtrlTestCase : public CppUnit::TestCase
+class TextCtrlTestCase : public TextEntryTestCase, public CppUnit::TestCase
 {
 public:
     TextCtrlTestCase() { }
@@ -35,22 +46,80 @@ public:
     virtual void tearDown();
 
 private:
+    virtual wxTextEntry *GetTestEntry() const { return m_text; }
+    virtual wxWindow *GetTestWindow() const { return m_text; }
+
+    #define SINGLE_AND_MULTI_TESTS() \
+        WXUISIM_TEST( ReadOnly ); \
+        CPPUNIT_TEST( StreamInput ); \
+        CPPUNIT_TEST( Redirector )
+
     CPPUNIT_TEST_SUITE( TextCtrlTestCase );
+        // These tests run for single line text controls.
+        wxTEXT_ENTRY_TESTS();
+        WXUISIM_TEST( MaxLength );
+        SINGLE_AND_MULTI_TESTS();
+
+        // Now switch to the multi-line text controls.
+        CPPUNIT_TEST( PseudoTestSwitchToMultiLineStyle );
+
+        // Rerun some of the tests above. Notice that not all of them pass, so
+        // we can't just use wxTEXT_ENTRY_TESTS() here. For some of them it's
+        // normal, e.g. Hint() test isn't supposed to work for multi-line
+        // controls. Others, such as InsertionPoint() and TextChangeEvents()
+        // don't pass neither but this could be a bug.
         CPPUNIT_TEST( SetValue );
-        CPPUNIT_TEST( TextChangeEvents );
         CPPUNIT_TEST( Selection );
+        CPPUNIT_TEST( Replace );
+        WXUISIM_TEST( Editable );
+        CPPUNIT_TEST( CopyPaste );
+        CPPUNIT_TEST( UndoRedo );
+
+        SINGLE_AND_MULTI_TESTS();
+
+
+        // All tests from now on are for multi-line controls only.
+        CPPUNIT_TEST( MultiLineReplace );
+        //WXUISIM_TEST( ProcessEnter );
+        WXUISIM_TEST( Url );
+        CPPUNIT_TEST( Style );
+        CPPUNIT_TEST( FontStyle );
+        CPPUNIT_TEST( Lines );
+        CPPUNIT_TEST( LogTextCtrl );
+        CPPUNIT_TEST( PositionToCoords );
+        CPPUNIT_TEST( PositionToCoordsRich );
+        CPPUNIT_TEST( PositionToCoordsRich2 );
     CPPUNIT_TEST_SUITE_END();
 
-    void SetValue();
-    void TextChangeEvents();
-    void Selection();
-
-    // Selection() test helper: verify that selection is as described by the
-    // function parameters
-    void AssertSelection(int from, int to, const char *sel);
+    void PseudoTestSwitchToMultiLineStyle()
+    {
+        ms_style = wxTE_MULTILINE;
+    }
+
+    void MultiLineReplace();
+    void ReadOnly();
+    void MaxLength();
+    void StreamInput();
+    void Redirector();
+    //void ProcessEnter();
+    void Url();
+    void Style();
+    void FontStyle();
+    void Lines();
+    void LogTextCtrl();
+    void PositionToCoords();
+    void PositionToCoordsRich();
+    void PositionToCoordsRich2();
+
+    void DoPositionToCoordsTestWithStyle(long style);
+
+    // Create the control with the following styles added to ms_style which may
+    // (or not) already contain wxTE_MULTILINE.
+    void CreateText(long extraStyles);
 
     wxTextCtrl *m_text;
-    wxFrame *m_frame;
+
+    static long ms_style;
 
     DECLARE_NO_COPY_CLASS(TextCtrlTestCase)
 };
@@ -58,127 +127,489 @@ private:
 // 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
+// also include in its own registry so that these tests can be run alone
 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( TextCtrlTestCase, "TextCtrlTestCase" );
 
 // ----------------------------------------------------------------------------
 // test initialization
 // ----------------------------------------------------------------------------
 
+// This is 0 initially and set to wxTE_MULTILINE later to allow running the
+// same tests for both single and multi line controls.
+long TextCtrlTestCase::ms_style = 0;
+
+void TextCtrlTestCase::CreateText(long extraStyles)
+{
+    wxSize size;
+    if ( ms_style == wxTE_MULTILINE )
+        size = wxSize(400, TEXT_HEIGHT);
+
+    m_text = new wxTextCtrl(wxTheApp->GetTopWindow(), wxID_ANY, "",
+                            wxDefaultPosition, size,
+                            ms_style | extraStyles);
+}
+
 void TextCtrlTestCase::setUp()
 {
-    m_text = new wxTextCtrl(wxTheApp->GetTopWindow(), wxID_ANY);
+    CreateText(ms_style);
 }
 
 void TextCtrlTestCase::tearDown()
 {
-    delete m_text;
-    m_text = NULL;
+    wxDELETE(m_text);
 }
 
 // ----------------------------------------------------------------------------
 // tests themselves
 // ----------------------------------------------------------------------------
 
-void TextCtrlTestCase::SetValue()
+void TextCtrlTestCase::MultiLineReplace()
+{
+    m_text->SetValue("Hello replace\n"
+                    "0123456789012");
+    m_text->SetInsertionPoint(0);
+
+    m_text->Replace(6, 13, "changed");
+
+    CPPUNIT_ASSERT_EQUAL("Hello changed\n"
+                         "0123456789012",
+                         m_text->GetValue());
+    CPPUNIT_ASSERT_EQUAL(13, m_text->GetInsertionPoint());
+
+    m_text->Replace(13, -1, "");
+    CPPUNIT_ASSERT_EQUAL("Hello changed", m_text->GetValue());
+    CPPUNIT_ASSERT_EQUAL(13, m_text->GetInsertionPoint());
+}
+
+void TextCtrlTestCase::ReadOnly()
+{
+#if wxUSE_UIACTIONSIMULATOR
+    // we need a read only control for this test so recreate it
+    delete m_text;
+    CreateText(wxTE_READONLY);
+
+    EventCounter updated(m_text, wxEVT_TEXT);
+
+    m_text->SetFocus();
+
+    wxUIActionSimulator sim;
+    sim.Text("abcdef");
+    wxYield();
+
+    CPPUNIT_ASSERT_EQUAL("", m_text->GetValue());
+    CPPUNIT_ASSERT_EQUAL(0, updated.GetCount());
+
+    // SetEditable() is supposed to override wxTE_READONLY
+    m_text->SetEditable(true);
+    
+#ifdef __WXOSX__
+    // a ready only text field might not have been focusable at all
+    m_text->SetFocus();
+#endif
+
+    sim.Text("abcdef");
+    wxYield();
+
+    CPPUNIT_ASSERT_EQUAL("abcdef", m_text->GetValue());
+    CPPUNIT_ASSERT_EQUAL(6, updated.GetCount());
+#endif
+}
+
+void TextCtrlTestCase::MaxLength()
+{
+#if wxUSE_UIACTIONSIMULATOR
+    EventCounter updated(m_text, wxEVT_TEXT);
+    EventCounter maxlen(m_text, wxEVT_TEXT_MAXLEN);
+
+    m_text->SetFocus();
+    m_text->SetMaxLength(10);
+
+    wxUIActionSimulator sim;
+    sim.Text("abcdef");
+    wxYield();
+
+    CPPUNIT_ASSERT_EQUAL(0, maxlen.GetCount());
+
+    sim.Text("ghij");
+    wxYield();
+
+    CPPUNIT_ASSERT_EQUAL(0, maxlen.GetCount());
+    CPPUNIT_ASSERT_EQUAL(10, updated.GetCount());
+
+    maxlen.Clear();
+    updated.Clear();
+
+    sim.Text("k");
+    wxYield();
+
+    CPPUNIT_ASSERT_EQUAL(1, maxlen.GetCount());
+    CPPUNIT_ASSERT_EQUAL(0, updated.GetCount());
+
+    maxlen.Clear();
+    updated.Clear();
+
+    m_text->SetMaxLength(0);
+
+    sim.Text("k");
+    wxYield();
+
+    CPPUNIT_ASSERT_EQUAL(0, maxlen.GetCount());
+    CPPUNIT_ASSERT_EQUAL(1, updated.GetCount());
+#endif
+}
+
+void TextCtrlTestCase::StreamInput()
 {
-    CPPUNIT_ASSERT( m_text->IsEmpty() );
+#ifndef __WXOSX__
+    {
+        // Ensure we use decimal point and not a comma.
+        char * const locOld = setlocale(LC_NUMERIC, "C");
+        wxON_BLOCK_EXIT2( setlocale, (int)LC_NUMERIC, locOld );
 
-    m_text->SetValue("foo");
-    CPPUNIT_ASSERT_EQUAL( "foo", m_text->GetValue() );
+        *m_text << "stringinput"
+                << 10
+                << 1000L
+                << 3.14f
+                << 2.71
+                << 'a'
+                << L'b';
+    }
+
+    CPPUNIT_ASSERT_EQUAL("stringinput1010003.142.71ab", m_text->GetValue());
 
     m_text->SetValue("");
-    CPPUNIT_ASSERT( m_text->IsEmpty() );
 
-    m_text->SetValue("hi");
-    CPPUNIT_ASSERT_EQUAL( "hi", m_text->GetValue() );
+#if wxHAS_TEXT_WINDOW_STREAM
+
+    std::ostream stream(m_text);
+
+    // We don't test a wide character as this is not a wide stream
+    stream << "stringinput"
+           << 10
+           << 1000L
+           << 3.14f
+           << 2.71
+           << 'a';
+
+    stream.flush();
+
+    CPPUNIT_ASSERT_EQUAL("stringinput1010003.142.71a", m_text->GetValue());
+
+#endif // wxHAS_TEXT_WINDOW_STREAM
+#endif // !__WXOSX__
+}
+
+void TextCtrlTestCase::Redirector()
+{
+#if wxHAS_TEXT_WINDOW_STREAM && wxUSE_STD_IOSTREAM
+
+    wxStreamToTextRedirector redirect(m_text);
+
+    std::cout << "stringinput"
+              << 10
+              << 1000L
+              << 3.14f
+              << 2.71
+              << 'a';
+
+    CPPUNIT_ASSERT_EQUAL("stringinput1010003.142.71a", m_text->GetValue());
+
+#endif
+}
+
+#if 0
+void TextCtrlTestCase::ProcessEnter()
+{
+#if wxUSE_UIACTIONSIMULATOR
+    wxTestableFrame* frame = wxStaticCast(wxTheApp->GetTopWindow(),
+                                          wxTestableFrame);
+
+    EventCounter count(m_text, wxEVT_TEXT_ENTER);
+
+    m_text->SetFocus();
 
-    m_text->SetValue("bye");
-    CPPUNIT_ASSERT_EQUAL( "bye", m_text->GetValue() );
+    wxUIActionSimulator sim;
+    sim.Char(WXK_RETURN);
+    wxYield();
+
+    CPPUNIT_ASSERT_EQUAL(0, frame->GetEventCount(wxEVT_TEXT_ENTER));
+
+    // we need a text control with wxTE_PROCESS_ENTER for this test
+    delete m_text;
+    CreateText(wxTE_PROCESS_ENTER);
+
+    m_text->SetFocus();
+
+    sim.Char(WXK_RETURN);
+    wxYield();
+
+    CPPUNIT_ASSERT_EQUAL(1, frame->GetEventCount(wxEVT_TEXT_ENTER));
+#endif
+}
+#endif
+
+void TextCtrlTestCase::Url()
+{
+#if wxUSE_UIACTIONSIMULATOR && defined(__WXMSW__)
+    delete m_text;
+    CreateText(wxTE_RICH | wxTE_AUTO_URL);
+
+    EventCounter url(m_text, wxEVT_TEXT_URL);
+
+    m_text->AppendText("http://www.wxwidgets.org");
+
+    wxUIActionSimulator sim;
+    sim.MouseMove(m_text->ClientToScreen(wxPoint(5, 5)));
+    sim.MouseClick();
+    wxYield();
+
+    CPPUNIT_ASSERT_EQUAL(1, url.GetCount());
+#endif
+}
+
+void TextCtrlTestCase::Style()
+{
+#ifndef __WXOSX__
+    delete m_text;
+    // We need wxTE_RICH under windows for style support
+    CreateText(wxTE_RICH);
+
+    // Red text on a white background
+    m_text->SetDefaultStyle(wxTextAttr(*wxRED, *wxWHITE));
+
+    CPPUNIT_ASSERT_EQUAL(m_text->GetDefaultStyle().GetTextColour(), *wxRED);
+    CPPUNIT_ASSERT_EQUAL(m_text->GetDefaultStyle().GetBackgroundColour(),
+                         *wxWHITE);
+
+    m_text->AppendText("red on white ");
+
+    // Red text on a grey background
+    m_text->SetDefaultStyle(wxTextAttr(wxNullColour, *wxLIGHT_GREY));
+
+    CPPUNIT_ASSERT_EQUAL(m_text->GetDefaultStyle().GetTextColour(), *wxRED);
+    CPPUNIT_ASSERT_EQUAL(m_text->GetDefaultStyle().GetBackgroundColour(),
+                         *wxLIGHT_GREY);
+
+    m_text->AppendText("red on grey ");
+
+    // Blue text on a grey background
+    m_text->SetDefaultStyle(wxTextAttr(*wxBLUE));
+
+
+    CPPUNIT_ASSERT_EQUAL(m_text->GetDefaultStyle().GetTextColour(), *wxBLUE);
+    CPPUNIT_ASSERT_EQUAL(m_text->GetDefaultStyle().GetBackgroundColour(),
+                         *wxLIGHT_GREY);
+
+    m_text->AppendText("blue on grey");
+
+    // Get getting the style at a specific location
+    wxTextAttr style;
+
+    // We have to check that styles are supported
+    if(m_text->GetStyle(3, style))
+    {
+        CPPUNIT_ASSERT_EQUAL(style.GetTextColour(), *wxRED);
+        CPPUNIT_ASSERT_EQUAL(style.GetBackgroundColour(), *wxWHITE);
+    }
+
+    // And then setting the style
+    if(m_text->SetStyle(15, 18, style))
+    {
+        m_text->GetStyle(17, style);
+
+        CPPUNIT_ASSERT_EQUAL(style.GetTextColour(), *wxRED);
+        CPPUNIT_ASSERT_EQUAL(style.GetBackgroundColour(), *wxWHITE);
+    }
+#endif
 }
 
-void TextCtrlTestCase::TextChangeEvents()
+void TextCtrlTestCase::FontStyle()
 {
-    class TextTestEventHandler : public wxEvtHandler
+    // We need wxTE_RICH under MSW and wxTE_MULTILINE under GTK for style
+    // support so recreate the control with these styles.
+    delete m_text;
+    CreateText(wxTE_RICH);
+
+    // Check that we get back the same font from GetStyle() after setting it
+    // with SetDefaultStyle().
+    wxFont fontIn(14,
+                  wxFONTFAMILY_DEFAULT,
+                  wxFONTSTYLE_NORMAL,
+                  wxFONTWEIGHT_NORMAL);
+    wxTextAttr attrIn;
+    attrIn.SetFont(fontIn);
+    if ( !m_text->SetDefaultStyle(attrIn) )
     {
-    public:
-        TextTestEventHandler() { m_events = 0; }
+        // Skip the test if the styles are not supported.
+        return;
+    }
 
-        // calling this automatically resets the events counter
-        int GetEvents()
-        {
-            const int events = m_events;
-            m_events = 0;
-            return events;
-        }
+    m_text->AppendText("Default font size 14");
 
-        void OnText(wxCommandEvent& WXUNUSED(event)) { m_events++; }
+    wxTextAttr attrOut;
+    m_text->GetStyle(5, attrOut);
 
-    private:
-        int m_events;
-    } handler;
+    CPPUNIT_ASSERT( attrOut.HasFont() );
 
-    m_text->Connect(wxEVT_COMMAND_TEXT_UPDATED,
-                    wxCommandEventHandler(TextTestEventHandler::OnText),
-                    NULL,
-                    &handler);
+    wxFont fontOut = attrOut.GetFont();
+#ifdef __WXMSW__
+    // Under MSW we get back an encoding in the font even though we hadn't
+    // specified it originally. It's not really a problem but we need this hack
+    // to prevent the assert below from failing because of it.
+    fontOut.SetEncoding(fontIn.GetEncoding());
+#endif
+    CPPUNIT_ASSERT_EQUAL( fontIn, fontOut );
 
-    // 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() );
+    // Also check the same for SetStyle().
+    fontIn.SetPointSize(10);
+    fontIn.SetWeight(wxFONTWEIGHT_BOLD);
+    attrIn.SetFont(fontIn);
+    m_text->SetStyle(0, 6, attrIn);
+
+    m_text->GetStyle(4, attrOut);
+    CPPUNIT_ASSERT( attrOut.HasFont() );
+
+    fontOut = attrOut.GetFont();
+#ifdef __WXMSW__
+    fontOut.SetEncoding(fontIn.GetEncoding());
+#endif
+    CPPUNIT_ASSERT_EQUAL( fontIn, fontOut );
+}
 
-    m_text->SetValue("foo");
-    CPPUNIT_ASSERT_EQUAL( 1, handler.GetEvents() );
+void TextCtrlTestCase::Lines()
+{
+    m_text->SetValue("line1\nline2\nlong long line 3");
+    m_text->Refresh();
+    m_text->Update();
+
+    CPPUNIT_ASSERT_EQUAL(3, m_text->GetNumberOfLines());
+    CPPUNIT_ASSERT_EQUAL(5, m_text->GetLineLength(0));
+    CPPUNIT_ASSERT_EQUAL("line2", m_text->GetLineText(1));
+    CPPUNIT_ASSERT_EQUAL(16, m_text->GetLineLength(2));
+
+    m_text->AppendText("\n\nMore text on line 5");
+
+    CPPUNIT_ASSERT_EQUAL(5, m_text->GetNumberOfLines());
+    CPPUNIT_ASSERT_EQUAL(0, m_text->GetLineLength(3));
+    CPPUNIT_ASSERT_EQUAL("", m_text->GetLineText(3));
+
+    // Verify that wrapped lines count as 2 lines.
+    //
+    // This currently doesn't work neither in wxGTK nor wxOSX/Cocoa, see
+    // #12366, where GetNumberOfLines() always returns the number of logical,
+    // not physical, lines.
+    m_text->AppendText("\n" + wxString(50, '1') + ' ' + wxString(50, '2'));
+#if defined(__WXGTK__) || defined(__WXOSX_COCOA__)
+    CPPUNIT_ASSERT_EQUAL(6, m_text->GetNumberOfLines());
+#else
+    CPPUNIT_ASSERT_EQUAL(7, m_text->GetNumberOfLines());
+#endif
+}
 
-    m_text->ChangeValue("bar");
-    CPPUNIT_ASSERT_EQUAL( 0, handler.GetEvents() );
+void TextCtrlTestCase::LogTextCtrl()
+{
+    CPPUNIT_ASSERT(m_text->IsEmpty());
 
-    m_text->AppendText("bar");
-    CPPUNIT_ASSERT_EQUAL( 1, handler.GetEvents() );
+    wxLogTextCtrl* logtext = new wxLogTextCtrl(m_text);
 
-    m_text->Replace(3, 6, "baz");
-    CPPUNIT_ASSERT_EQUAL( 1, handler.GetEvents() );
+    wxLog* old = wxLog::SetActiveTarget(logtext);
 
-    m_text->Remove(0, 3);
-    CPPUNIT_ASSERT_EQUAL( 1, handler.GetEvents() );
+    logtext->LogText("text");
 
-    m_text->WriteText("foo");
-    CPPUNIT_ASSERT_EQUAL( 1, handler.GetEvents() );
+    delete wxLog::SetActiveTarget(old);
 
-    m_text->Clear();
-    CPPUNIT_ASSERT_EQUAL( 1, handler.GetEvents() );
+    CPPUNIT_ASSERT(!m_text->IsEmpty());
 }
 
-void TextCtrlTestCase::AssertSelection(int from, int to, const char *sel)
+void TextCtrlTestCase::PositionToCoords()
 {
-    CPPUNIT_ASSERT( m_text->HasSelection() );
+    DoPositionToCoordsTestWithStyle(0);
+}
 
-    long fromReal,
-         toReal;
-    m_text->GetSelection(&fromReal, &toReal);
-    CPPUNIT_ASSERT_EQUAL( from, fromReal );
-    CPPUNIT_ASSERT_EQUAL( to, toReal );
-    CPPUNIT_ASSERT_EQUAL( sel, m_text->GetStringSelection() );
+void TextCtrlTestCase::PositionToCoordsRich()
+{
+    DoPositionToCoordsTestWithStyle(wxTE_RICH);
+}
 
-    CPPUNIT_ASSERT_EQUAL( from, m_text->GetInsertionPoint() );
+void TextCtrlTestCase::PositionToCoordsRich2()
+{
+    DoPositionToCoordsTestWithStyle(wxTE_RICH2);
 }
 
-void TextCtrlTestCase::Selection()
+void TextCtrlTestCase::DoPositionToCoordsTestWithStyle(long style)
 {
-    m_text->SetValue("0123456789");
+    delete m_text;
+    CreateText(style);
+
+    // Asking for invalid index should fail.
+    WX_ASSERT_FAILS_WITH_ASSERT( m_text->PositionToCoords(1) );
+
+    // Getting position shouldn't return wxDefaultPosition except if the method
+    // is not implemented at all in the current port.
+    const wxPoint pos0 = m_text->PositionToCoords(0);
+    if ( pos0 == wxDefaultPosition )
+    {
+#if defined(__WXMSW__) || defined(__WXGTK20__)
+        CPPUNIT_FAIL( "PositionToCoords() unexpectedly failed." );
+#endif
+        return;
+    }
+
+    CPPUNIT_ASSERT(pos0.x >= 0);
+    CPPUNIT_ASSERT(pos0.y >= 0);
+
+
+    m_text->SetValue("Hello");
+    wxYield(); // Let GTK layout the control correctly.
+
+    // Position of non-first character should be positive.
+    const long posHello4 = m_text->PositionToCoords(4).x;
+    CPPUNIT_ASSERT( posHello4 > 0 );
 
-    m_text->SetSelection(2, 4);
-    AssertSelection(2, 4, "23"); // not "234"!
+    // Asking for position beyond the last character should succeed and return
+    // reasonable result.
+    CPPUNIT_ASSERT( m_text->PositionToCoords(5).x > posHello4 );
 
-    m_text->SetSelection(3, -1);
-    AssertSelection(3, 10, "3456789");
+    // But asking for the next position should fail.
+    WX_ASSERT_FAILS_WITH_ASSERT( m_text->PositionToCoords(6) );
 
-    m_text->SelectAll();
-    AssertSelection(0, 10, "0123456789");
+    // Test getting the coordinates of the last character when it is in the
+    // beginning of a new line to exercise MSW code which has specific logic
+    // for it.
+    m_text->AppendText("\n");
+    const wxPoint posLast = m_text->PositionToCoords(m_text->GetLastPosition());
+    CPPUNIT_ASSERT_EQUAL( pos0.x, posLast.x );
+    CPPUNIT_ASSERT( posLast.y > 0 );
 
-    m_text->SetSelection(0, 0);
-    CPPUNIT_ASSERT( !m_text->HasSelection() );
+
+    // Add enough contents to the control to make sure it has a scrollbar.
+    m_text->SetValue("First line" + wxString(50, '\n') + "Last line");
+    m_text->SetInsertionPoint(0);
+    wxYield(); // Let GTK layout the control correctly.
+
+    // This shouldn't change anything for the first position coordinates.
+    CPPUNIT_ASSERT_EQUAL( pos0, m_text->PositionToCoords(0) );
+
+    // And the last one must be beyond the window boundary and so not be
+    // visible -- but getting its coordinate should still work.
+    CPPUNIT_ASSERT
+    (
+        m_text->PositionToCoords(m_text->GetLastPosition()).y > TEXT_HEIGHT
+    );
+
+
+    // Now make it scroll to the end and check that the first position now has
+    // negative offset as its above the visible part of the window while the
+    // last position is in its bounds.
+    m_text->SetInsertionPointEnd();
+
+    CPPUNIT_ASSERT( m_text->PositionToCoords(0).y < 0 );
+    CPPUNIT_ASSERT
+    (
+        m_text->PositionToCoords(m_text->GetInsertionPoint()).y <= TEXT_HEIGHT
+    );
 }
+
+
+#endif //wxUSE_TEXTCTRL