--- /dev/null
+///////////////////////////////////////////////////////////////////////////////
+// Name: tests/streams/backfile.cpp
+// Purpose: Test wxBackingFile
+// Author: Mike Wetherell
+// RCS-ID: $Id$
+// Copyright: (c) 2006 Mike Wetherell
+// Licence: wxWidgets licence
+///////////////////////////////////////////////////////////////////////////////
+
+#include "testprec.h"
+
+#ifdef __BORLANDC__
+ #pragma hdrstop
+#endif
+
+// for all others, include the necessary headers
+#ifndef WX_PRECOMP
+ #include "wx/wx.h"
+#endif
+
+#include "wx/mstream.h"
+#include "wx/fileback.h"
+#include "bstream.h"
+
+#if wxUSE_STREAMS
+
+const size_t TESTSIZE = 256;
+const size_t BUFSIZE = 100;
+
+
+///////////////////////////////////////////////////////////////////////////////
+// Parent stream for testing
+
+class TestStream : public wxMemoryInputStream
+{
+public:
+ TestStream(const void *buf, size_t size)
+ : wxMemoryInputStream(buf, size) { }
+
+ wxFileOffset GetLength() const { return wxInvalidOffset; }
+};
+
+
+///////////////////////////////////////////////////////////////////////////////
+// The test case
+
+class backStream : public CppUnit::TestCase
+{
+public:
+ backStream();
+
+ CPPUNIT_TEST_SUITE(backStream);
+ CPPUNIT_TEST(ReadLenSeek);
+ CPPUNIT_TEST(LenSeekRead);
+ CPPUNIT_TEST(SeekReadLen);
+ CPPUNIT_TEST(ReadAll);
+ CPPUNIT_TEST(ReadTooMuch);
+ CPPUNIT_TEST(EmptyStream);
+ CPPUNIT_TEST_SUITE_END();
+
+ void ReadLenSeek();
+ void LenSeekRead();
+ void SeekReadLen();
+ void ReadAll();
+ void ReadTooMuch();
+ void EmptyStream();
+
+private:
+ void Read(wxInputStream& in, size_t size1, size_t size2, size_t size3);
+ void Len(wxInputStream& in);
+ void Seek(wxInputStream& in);
+
+ char m_testdata[TESTSIZE];
+};
+
+backStream::backStream()
+{
+ for (unsigned i = 0; i < TESTSIZE; i++)
+ m_testdata[i] = i;
+}
+
+void backStream::ReadLenSeek()
+{
+ wxBackingFile bf(new TestStream(m_testdata, TESTSIZE), BUFSIZE);
+ wxBackedInputStream in(bf);
+
+ Read(in, BUFSIZE, BUFSIZE / 2, 2 * BUFSIZE / 3);
+ Len(in);
+ Seek(in);
+}
+
+void backStream::LenSeekRead()
+{
+ wxBackingFile bf(new wxMemoryInputStream(m_testdata, TESTSIZE), BUFSIZE);
+ wxBackedInputStream in(bf);
+
+ Len(in);
+ Seek(in);
+ Read(in, BUFSIZE, BUFSIZE / 2, 2 * BUFSIZE / 3);
+}
+
+void backStream::SeekReadLen()
+{
+ wxBackingFile bf(new TestStream(m_testdata, TESTSIZE), BUFSIZE);
+ wxBackedInputStream in(bf);
+
+ Seek(in);
+ Read(in, BUFSIZE, BUFSIZE / 2, 2 * BUFSIZE / 3);
+ Len(in);
+}
+
+void backStream::ReadAll()
+{
+ wxBackingFile bf(new TestStream(m_testdata, TESTSIZE), BUFSIZE);
+ wxBackedInputStream in(bf);
+
+ Read(in, TESTSIZE, 0, 0);
+}
+
+void backStream::ReadTooMuch()
+{
+ wxBackingFile bf(new TestStream(m_testdata, TESTSIZE), BUFSIZE);
+ wxBackedInputStream in(bf);
+
+ char buf[TESTSIZE * 2];
+
+ CPPUNIT_ASSERT_EQUAL(TESTSIZE, in.Read(buf, TESTSIZE * 2).LastRead());
+ CPPUNIT_ASSERT(in.Eof());
+ CPPUNIT_ASSERT(memcmp(buf, m_testdata, TESTSIZE) == 0);
+}
+
+void backStream::EmptyStream()
+{
+ wxBackingFile bf(new TestStream(m_testdata, 0), BUFSIZE);
+ wxBackedInputStream in(bf);
+
+ char buf[1];
+
+ CPPUNIT_ASSERT_EQUAL(size_t(0), in.Read(buf, 1).LastRead());
+ CPPUNIT_ASSERT(in.Eof());
+}
+
+void backStream::Read(wxInputStream& in,
+ size_t size1,
+ size_t size2,
+ size_t size3)
+{
+ const size_t remainder = TESTSIZE - size1 - size2 - size3;
+ char buf[TESTSIZE];
+ char *testdata = m_testdata;
+
+ in.SeekI(0);
+
+ CPPUNIT_ASSERT_EQUAL(size1, in.Read(buf, size1).LastRead());
+ CPPUNIT_ASSERT(in.IsOk());
+ CPPUNIT_ASSERT(memcmp(buf, testdata, size1) == 0);
+ testdata += size1;
+
+ CPPUNIT_ASSERT_EQUAL(size2, in.Read(buf, size2).LastRead());
+ CPPUNIT_ASSERT(in.IsOk());
+ CPPUNIT_ASSERT(memcmp(buf, testdata, size2) == 0);
+ testdata += size2;
+
+ CPPUNIT_ASSERT_EQUAL(size3, in.Read(buf, size3).LastRead());
+ CPPUNIT_ASSERT(in.IsOk());
+ CPPUNIT_ASSERT(memcmp(buf, testdata, size3) == 0);
+ testdata += size3;
+
+ CPPUNIT_ASSERT_EQUAL(remainder, in.Read(buf, TESTSIZE).LastRead());
+ CPPUNIT_ASSERT(in.Eof());
+ CPPUNIT_ASSERT(memcmp(buf, testdata, remainder) == 0);
+
+ CPPUNIT_ASSERT_EQUAL(size_t(0), in.Read(buf, TESTSIZE).LastRead());
+ CPPUNIT_ASSERT(in.Eof());
+}
+
+void backStream::Len(wxInputStream& in)
+{
+ CPPUNIT_ASSERT_EQUAL(wxFileOffset(TESTSIZE), in.GetLength());
+}
+
+void backStream::Seek(wxInputStream& in)
+{
+ CPPUNIT_ASSERT_EQUAL(wxFileOffset(TESTSIZE), in.SeekI(TESTSIZE));
+ in.GetC();
+ CPPUNIT_ASSERT_EQUAL(size_t(0), in.LastRead());
+ CPPUNIT_ASSERT(in.Eof());
+
+ for (wxFileOffset i = TESTSIZE - 1; i >= 0; i--) {
+ CPPUNIT_ASSERT_EQUAL(i, in.SeekI(i));
+ CPPUNIT_ASSERT_EQUAL(i, in.TellI());
+ CPPUNIT_ASSERT_EQUAL(char(i), in.GetC());
+ CPPUNIT_ASSERT_EQUAL(size_t(1), in.LastRead());
+ CPPUNIT_ASSERT(in.IsOk());
+ }
+}
+
+// Register the stream sub suite, by using some stream helper macro.
+// Note: Don't forget to connect it to the base suite (See: bstream.cpp => StreamCase::suite())
+STREAM_TEST_SUBSUITE_NAMED_REGISTRATION(backStream)
+
+#endif // wxUSE_STREAMS
projects / wxWidgets.git / commitdiff
