1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
/* -*- 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_EQUAL('f', std_a);

        char tools_a(78);
        aMemStream.ReadChar( tools_a );
        CPPUNIT_ASSERT_EQUAL('f', tools_a);

        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_EQUAL(static_cast<char>(78), std_a);
        //nothing wrong with the stream, so not bad
        CPPUNIT_ASSERT(!iss.bad());
        //yet, the read didn't succeed
        CPPUNIT_ASSERT(!iss.good());
        CPPUNIT_ASSERT_EQUAL((std::ios::failbit|std::ios::eofbit), iss.rdstate());

        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_EQUAL(static_cast<char>(78), tools_a);
        //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_EQUAL(static_cast<sal_uInt16>(0x1122), tools_b);

        iss.clear();
        iss.seekg(0);
        CPPUNIT_ASSERT(iss.good());
        iss >> std_a;
        CPPUNIT_ASSERT_EQUAL('f', std_a);

        aMemStream.Seek(0);
        CPPUNIT_ASSERT(aMemStream.good());
        aMemStream.ReadChar( tools_a );
        CPPUNIT_ASSERT_EQUAL('f', tools_a);

        //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_EQUAL(static_cast<std::streamsize>(3), iss.gcount());
        CPPUNIT_ASSERT(!iss.good());
        CPPUNIT_ASSERT(!iss.bad());
        CPPUNIT_ASSERT(iss.eof());

        aMemStream.Seek(0);
        CPPUNIT_ASSERT(aMemStream.good());
        std::size_t nRet = aMemStream.ReadBytes(buffer, sizeof(buffer));
        CPPUNIT_ASSERT_EQUAL(static_cast<std::size_t>(3), nRet);
        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_EQUAL(OString("foo"), aOne);

        OString aTwo = read_uInt8s_ToOString(aMemStream, 3);
        CPPUNIT_ASSERT_EQUAL(OString("bar"), aTwo);

        OString aThree = read_uInt8s_ToOString(aMemStream, 3);
        CPPUNIT_ASSERT(aThree.isEmpty());

        aMemStream.Seek(0);

        OString aFour = read_uInt8s_ToOString(aMemStream, 100);
        CPPUNIT_ASSERT_EQUAL(OString(foo), aFour);
    }

    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_EQUAL(OString("foobar"), aOne);
        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_EQUAL(OString("foo"), aTwo);
        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_EQUAL(OString("foo"), aFoo);
        CPPUNIT_ASSERT(aMemStream.good());
        CPPUNIT_ASSERT(!aMemStream.bad());
        CPPUNIT_ASSERT(!aMemStream.eof());

        aMemStream.Seek(0);
        foo[0] = 10;<--- Variable 'foo[0]' is reassigned a value before the old one has been used.
        aFoo = read_uInt8_lenPrefixed_uInt8s_ToOString(aMemStream);
        CPPUNIT_ASSERT_EQUAL(OString("foobar"), aFoo);
        CPPUNIT_ASSERT(!aMemStream.good());
        CPPUNIT_ASSERT(!aMemStream.bad());
        CPPUNIT_ASSERT(aMemStream.eof());

        aMemStream.SetEndian(SvStreamEndian::BIG);
        aMemStream.Seek(0);
        foo[0] = 0;<--- Variable 'foo[0]' is reassigned a value before the old one has been used.
        foo[1] = 3;
        aFoo = read_uInt16_lenPrefixed_uInt8s_ToOString(aMemStream);
        CPPUNIT_ASSERT_EQUAL(OString("oob"), aFoo);
        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_EQUAL(OString("foo"), aFoo);
        CPPUNIT_ASSERT(aMemStream.good());

        bRet = aMemStream.ReadLine(aFoo);
        CPPUNIT_ASSERT(bRet);
        CPPUNIT_ASSERT_EQUAL(OString("bar"), aFoo);
        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_EQUAL(OString("foo"), aFoo);
        CPPUNIT_ASSERT(!aMemStreamB.eof()); //<-- diff A

        std::istringstream issB(bar, std::istringstream::in);
        std::getline(issB, sStr, '\n');
        CPPUNIT_ASSERT_EQUAL(std::string("foo"), sStr);
        CPPUNIT_ASSERT(issB.eof());         //<-- diff A
    }

    CPPUNIT_TEST_SUITE_REGISTRATION(Test);
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */