a03ece4880
This reverts commit 41f6f17d01 ("return 0
(meaning the file is not seekable, as the docs now explain) instead of
4KB for the files in sysfs under Linux") as it seems to be wrong to
return a value different from what "ls -l" or "stat" return here and the
original problem was solved in a better way in the previous commit.
See #9965.
Closes #17818.
172 lines
4.6 KiB
C++
172 lines
4.6 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: tests/file/filetest.cpp
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// Purpose: wxFile unit test
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// Author: Vadim Zeitlin
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// Created: 2009-09-12
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// Copyright: (c) 2009 Vadim Zeitlin <vadim@wxwidgets.org>
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///////////////////////////////////////////////////////////////////////////////
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#include "testprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#if wxUSE_FILE
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#include "wx/file.h"
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#include "testfile.h"
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// ----------------------------------------------------------------------------
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// test class
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// ----------------------------------------------------------------------------
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class FileTestCase : public CppUnit::TestCase
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{
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public:
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FileTestCase() { }
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private:
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CPPUNIT_TEST_SUITE( FileTestCase );
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CPPUNIT_TEST( ReadAll );
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#if wxUSE_UNICODE
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CPPUNIT_TEST( RoundTripUTF8 );
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CPPUNIT_TEST( RoundTripUTF16 );
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CPPUNIT_TEST( RoundTripUTF32 );
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#endif // wxUSE_UNICODE
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CPPUNIT_TEST( TempFile );
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CPPUNIT_TEST_SUITE_END();
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void ReadAll();
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#if wxUSE_UNICODE
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void RoundTripUTF8() { DoRoundTripTest(wxConvUTF8); }
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void RoundTripUTF16() { DoRoundTripTest(wxMBConvUTF16()); }
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void RoundTripUTF32() { DoRoundTripTest(wxMBConvUTF32()); }
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#endif // wxUSE_UNICODE
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void DoRoundTripTest(const wxMBConv& conv);
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void TempFile();
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wxDECLARE_NO_COPY_CLASS(FileTestCase);
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};
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// ----------------------------------------------------------------------------
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// CppUnit macros
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// ----------------------------------------------------------------------------
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CPPUNIT_TEST_SUITE_REGISTRATION( FileTestCase );
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CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( FileTestCase, "FileTestCase" );
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// ----------------------------------------------------------------------------
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// tests implementation
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// ----------------------------------------------------------------------------
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void FileTestCase::ReadAll()
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{
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TestFile tf;
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const char* text = "Ream\nde";
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{
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wxFile fout(tf.GetName(), wxFile::write);
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CPPUNIT_ASSERT( fout.IsOpened() );
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fout.Write(text, strlen(text));
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CPPUNIT_ASSERT( fout.Close() );
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}
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{
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wxFile fin(tf.GetName(), wxFile::read);
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CPPUNIT_ASSERT( fin.IsOpened() );
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wxString s;
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CPPUNIT_ASSERT( fin.ReadAll(&s) );
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CPPUNIT_ASSERT_EQUAL( text, s );
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}
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}
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#if wxUSE_UNICODE
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void FileTestCase::DoRoundTripTest(const wxMBConv& conv)
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{
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TestFile tf;
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// Explicit length is needed because of the embedded NUL.
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const wxString data("Hello\0UTF!", 10);
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{
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wxFile fout(tf.GetName(), wxFile::write);
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CPPUNIT_ASSERT( fout.IsOpened() );
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CPPUNIT_ASSERT( fout.Write(data, conv) );
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}
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{
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wxFile fin(tf.GetName(), wxFile::read);
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CPPUNIT_ASSERT( fin.IsOpened() );
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const ssize_t len = fin.Length();
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wxCharBuffer buf(len);
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CPPUNIT_ASSERT_EQUAL( len, fin.Read(buf.data(), len) );
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wxString dataReadBack(buf, conv, len);
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CPPUNIT_ASSERT_EQUAL( data, dataReadBack );
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}
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{
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wxFile fin(tf.GetName(), wxFile::read);
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CPPUNIT_ASSERT( fin.IsOpened() );
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wxString dataReadBack;
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CPPUNIT_ASSERT( fin.ReadAll(&dataReadBack, conv) );
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CPPUNIT_ASSERT_EQUAL( data, dataReadBack );
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}
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}
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#endif // wxUSE_UNICODE
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void FileTestCase::TempFile()
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{
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wxTempFile tmpFile;
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CPPUNIT_ASSERT( tmpFile.Open(wxT("test2")) );
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CPPUNIT_ASSERT( tmpFile.Write(wxT("the answer is 42")) );
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CPPUNIT_ASSERT( tmpFile.Commit() );
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CPPUNIT_ASSERT( wxRemoveFile(wxT("test2")) );
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}
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#ifdef __LINUX__
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// Check that GetSize() works correctly for special files.
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TEST_CASE("wxFile::Special", "[file][linux][special-file]")
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{
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// We can't test /proc/kcore here, unlike in the similar
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// wxFileName::GetSize() test, as wxFile must be able to open it (at least
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// for reading) and usually we don't have the permissions to do it.
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// This file is not seekable and has 0 size, but can still be read.
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wxFile fileProc("/proc/diskstats");
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CHECK( fileProc.IsOpened() );
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wxString s;
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CHECK( fileProc.ReadAll(&s) );
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CHECK( !s.empty() );
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// All files in /sys seem to have size of 4KiB currently, even if they
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// don't have that much data in them.
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wxFile fileSys("/sys/power/state");
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CHECK( fileSys.Length() == 4096 );
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CHECK( fileSys.IsOpened() );
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CHECK( fileSys.ReadAll(&s) );
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CHECK( !s.empty() );
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CHECK( s.length() < 4096 );
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}
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#endif // __LINUX__
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#endif // wxUSE_FILE
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