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office-gobmx/tools/qa/cppunit/test_stream.cxx
Noel Grandin b14224fe97 loplugin:unusedmethods 
using an idea from dtardon:

<dtardon> noelgrandin, hi. could you try to run the unusedmethods clang
plugin with "make build-nocheck"? that would catch functions that are
only used in tests. e.g., i just removed the whole o3tl::range class,
which has not been used in many years, but htere was a test for it...
<noelgrandin> dtardon, interesting idea! Sure, I can do that.

Change-Id: I5653953a426a2186a1e43017212d87ffce520387
Reviewed-on: https://gerrit.libreoffice.org/22041
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>
2016-02-08 06:08:14 +00:00

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <sal/types.h>
#include "cppunit/TestAssert.h"
#include "cppunit/TestFixture.h"
#include "cppunit/extensions/HelperMacros.h"
#include "cppunit/plugin/TestPlugIn.h"
#include <tools/stream.hxx>
#include <sstream>
//Tests for eofbit/badbit/goodbit/failbit
namespace
{
class Test: public CppUnit::TestFixture
{
public:
void test_stdstream();
void test_fastostring();
void test_read_cstring();
void test_read_pstring();
void test_readline();
CPPUNIT_TEST_SUITE(Test);
CPPUNIT_TEST(test_stdstream);
CPPUNIT_TEST(test_fastostring);
CPPUNIT_TEST(test_read_cstring);
CPPUNIT_TEST(test_read_pstring);
CPPUNIT_TEST(test_readline);
CPPUNIT_TEST_SUITE_END();
};
void Test::test_stdstream()
{
char foo[] = "foo";
std::istringstream iss(foo, std::istringstream::in);
SvMemoryStream aMemStream(foo, SAL_N_ELEMENTS(foo)-1, StreamMode::READ);
char std_a(78);
iss >> std_a;
CPPUNIT_ASSERT(std_a == 'f');
char tools_a(78);
aMemStream.ReadChar( tools_a );
CPPUNIT_ASSERT(tools_a == 'f');
iss.seekg(0, std::ios_base::end);
//seeking to end doesn't set eof, reading past eof does
CPPUNIT_ASSERT(!iss.eof());
CPPUNIT_ASSERT(iss.good());
aMemStream.Seek(STREAM_SEEK_TO_END);
//seeking to end doesn't set eof, reading past eof does
CPPUNIT_ASSERT(!aMemStream.eof());
CPPUNIT_ASSERT(aMemStream.good());
std_a = 78;
iss >> std_a;
//so, now eof is set
CPPUNIT_ASSERT(iss.eof());
//a failed read doesn't change the data, it remains unchanged
CPPUNIT_ASSERT(std_a == 78);
//nothing wrong with the stream, so not bad
CPPUNIT_ASSERT(!iss.bad());
//yet, the read didn't succeed
CPPUNIT_ASSERT(!iss.good());
CPPUNIT_ASSERT(iss.rdstate() == (std::ios::failbit|std::ios::eofbit));
tools_a = 78;
aMemStream.ReadChar( tools_a );
//so, now eof is set
CPPUNIT_ASSERT(aMemStream.eof());
//a failed read doesn't change the data, it remains unchanged
CPPUNIT_ASSERT(tools_a == 78);
//nothing wrong with the stream, so not bad
CPPUNIT_ASSERT(!aMemStream.bad());
//yet, the read didn't succeed
CPPUNIT_ASSERT(!aMemStream.good());
//set things up so that there is only one byte available on an attempt
//to read a two-byte sal_uInt16. The byte should be consumed, but the
//operation should fail, and tools_b should remain unchanged,
sal_uInt16 tools_b = 0x1122;
aMemStream.SeekRel(-1);
CPPUNIT_ASSERT(!aMemStream.eof());
CPPUNIT_ASSERT(aMemStream.good());
aMemStream.ReadUInt16( tools_b );
CPPUNIT_ASSERT(!aMemStream.good());
CPPUNIT_ASSERT(aMemStream.eof());
CPPUNIT_ASSERT(tools_b == 0x1122);
iss.clear();
iss.seekg(0);
CPPUNIT_ASSERT(iss.good());
iss >> std_a;
CPPUNIT_ASSERT(std_a == 'f');
aMemStream.Seek(0);
CPPUNIT_ASSERT(aMemStream.good());
aMemStream.ReadChar( tools_a );
CPPUNIT_ASSERT(tools_a == 'f');
//failbit is rather subtle wrt e.g seeks
char buffer[1024];
iss.clear();
iss.seekg(0);
CPPUNIT_ASSERT(iss.good());
iss.read(buffer, sizeof(buffer));
CPPUNIT_ASSERT(iss.gcount() == 3);
CPPUNIT_ASSERT(!iss.good());
CPPUNIT_ASSERT(!iss.bad());
CPPUNIT_ASSERT(iss.eof());
aMemStream.Seek(0);
CPPUNIT_ASSERT(aMemStream.good());
sal_Size nRet = aMemStream.Read(buffer, sizeof(buffer));
CPPUNIT_ASSERT(nRet == 3);
CPPUNIT_ASSERT(!aMemStream.good());
CPPUNIT_ASSERT(!aMemStream.bad());
CPPUNIT_ASSERT(aMemStream.eof());
}
void Test::test_fastostring()
{
char foo[] = "foobar";
SvMemoryStream aMemStream(foo, SAL_N_ELEMENTS(foo)-1, StreamMode::READ);
OString aOne = read_uInt8s_ToOString(aMemStream, 3);
CPPUNIT_ASSERT(aOne == "foo");
OString aTwo = read_uInt8s_ToOString(aMemStream, 3);
CPPUNIT_ASSERT(aTwo == "bar");
OString aThree = read_uInt8s_ToOString(aMemStream, 3);
CPPUNIT_ASSERT(aThree.isEmpty());
aMemStream.Seek(0);
OString aFour = read_uInt8s_ToOString(aMemStream, 100);
CPPUNIT_ASSERT(aFour == foo);
}
void Test::test_read_cstring()
{
char foo[] = "foobar";
SvMemoryStream aMemStream(foo, SAL_N_ELEMENTS(foo)-1, StreamMode::READ);
OString aOne = read_zeroTerminated_uInt8s_ToOString(aMemStream);
CPPUNIT_ASSERT(aOne == "foobar");
CPPUNIT_ASSERT(!aMemStream.good());
CPPUNIT_ASSERT(!aMemStream.bad());
CPPUNIT_ASSERT(aMemStream.eof());
aMemStream.Seek(0);
foo[3] = 0;
OString aTwo = read_zeroTerminated_uInt8s_ToOString(aMemStream);
CPPUNIT_ASSERT(aTwo == "foo");
CPPUNIT_ASSERT(aMemStream.good());
}
void Test::test_read_pstring()
{
char foo[] = "\3foobar";
SvMemoryStream aMemStream(foo, SAL_N_ELEMENTS(foo)-1, StreamMode::READ);
OString aFoo = read_uInt8_lenPrefixed_uInt8s_ToOString(aMemStream);
CPPUNIT_ASSERT(aFoo == "foo");
CPPUNIT_ASSERT(aMemStream.good());
CPPUNIT_ASSERT(!aMemStream.bad());
CPPUNIT_ASSERT(!aMemStream.eof());
aMemStream.Seek(0);
foo[0] = 10;
aFoo = read_uInt8_lenPrefixed_uInt8s_ToOString(aMemStream);
CPPUNIT_ASSERT(aFoo == "foobar");
CPPUNIT_ASSERT(!aMemStream.good());
CPPUNIT_ASSERT(!aMemStream.bad());
CPPUNIT_ASSERT(aMemStream.eof());
aMemStream.SetEndian(SvStreamEndian::BIG);
aMemStream.Seek(0);
foo[0] = 0;
foo[1] = 3;
aFoo = read_uInt16_lenPrefixed_uInt8s_ToOString(aMemStream);
CPPUNIT_ASSERT(aFoo == "oob");
CPPUNIT_ASSERT(aMemStream.good());
CPPUNIT_ASSERT(!aMemStream.bad());
CPPUNIT_ASSERT(!aMemStream.eof());
}
void Test::test_readline()
{
char foo[] = "foo\nbar\n\n";
SvMemoryStream aMemStream(foo, SAL_N_ELEMENTS(foo)-1, StreamMode::READ);
OString aFoo;
bool bRet;
bRet = aMemStream.ReadLine(aFoo);
CPPUNIT_ASSERT(bRet);
CPPUNIT_ASSERT(aFoo == "foo");
CPPUNIT_ASSERT(aMemStream.good());
bRet = aMemStream.ReadLine(aFoo);
CPPUNIT_ASSERT(bRet);
CPPUNIT_ASSERT(aFoo == "bar");
CPPUNIT_ASSERT(aMemStream.good());
bRet = aMemStream.ReadLine(aFoo);
CPPUNIT_ASSERT(bRet);
CPPUNIT_ASSERT(aFoo.isEmpty());
CPPUNIT_ASSERT(aMemStream.good());
bRet = aMemStream.ReadLine(aFoo);
CPPUNIT_ASSERT(!bRet);
CPPUNIT_ASSERT(aFoo.isEmpty());
CPPUNIT_ASSERT(aMemStream.eof());
foo[3] = 0; //test reading embedded nulls
aMemStream.Seek(0);
bRet = aMemStream.ReadLine(aFoo);
CPPUNIT_ASSERT(bRet);
CPPUNIT_ASSERT(aFoo.getLength() == 7 && aFoo[3] == 0);
CPPUNIT_ASSERT(aMemStream.good());
std::string sStr(foo, RTL_CONSTASCII_LENGTH(foo));
std::istringstream iss(sStr, std::istringstream::in);
std::getline(iss, sStr, '\n');
//embedded null read as expected
CPPUNIT_ASSERT(sStr.size() == 7 && sStr[3] == 0);
CPPUNIT_ASSERT(iss.good());
bRet = aMemStream.ReadLine(aFoo);
CPPUNIT_ASSERT(bRet);
CPPUNIT_ASSERT(aFoo.isEmpty());
CPPUNIT_ASSERT(aMemStream.good());
std::getline(iss, sStr, '\n');
CPPUNIT_ASSERT(sStr.empty());
CPPUNIT_ASSERT(iss.good());
bRet = aMemStream.ReadLine(aFoo);
CPPUNIT_ASSERT(!bRet);
CPPUNIT_ASSERT(aFoo.isEmpty());
CPPUNIT_ASSERT(aMemStream.eof() && !aMemStream.bad());
std::getline(iss, sStr, '\n');
CPPUNIT_ASSERT(sStr.empty());
CPPUNIT_ASSERT(iss.eof() && !iss.bad());
char bar[] = "foo";
SvMemoryStream aMemStreamB(bar, SAL_N_ELEMENTS(bar)-1, StreamMode::READ);
bRet = aMemStreamB.ReadLine(aFoo);
CPPUNIT_ASSERT(bRet);
CPPUNIT_ASSERT(aFoo == "foo");
CPPUNIT_ASSERT(!aMemStreamB.eof()); //<-- diff A
std::istringstream issB(bar, std::istringstream::in);
std::getline(issB, sStr, '\n');
CPPUNIT_ASSERT(sStr == "foo");
CPPUNIT_ASSERT(issB.eof()); //<-- diff A
}
CPPUNIT_TEST_SUITE_REGISTRATION(Test);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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