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[wxWidgets.git] / tests / regex / regextest.cpp
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1///////////////////////////////////////////////////////////////////////////////
2// Name: tests/regex/regex.cpp
3// Purpose: Test the built-in regex lib and wxRegEx
4// Author: Mike Wetherell
5// RCS-ID: $Id$
6// Copyright: (c) 2004 Mike Wetherell
7// Licence: wxWidgets licence
8///////////////////////////////////////////////////////////////////////////////
9
10//
11// Notes:
12//
13// To run just one section, say wx_1, do this:
14// test regex.wx_1
15//
16// To run all the regex tests:
17// test regex
3e5f6c1c 18//
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19// Some tests must be skipped since they use features which we do not make
20// available through wxRegEx. To see the list of tests that have been skipped
21// turn on verbose logging, e.g.:
22// test --verbose regex
3e5f6c1c 23//
e70833fb 24// The tests here are for the builtin library, tests for wxRegEx in general
bc10103e 25// should go in wxregex.cpp
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26//
27// The tests are generated from Henry Spencer's reg.test, additional test
28// can be added in wxreg.test. These test files are then turned into a C++
29// include file 'regex.inc' (included below) using a script 'regex.pl'.
3e5f6c1c 30//
e70833fb 31
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32// For compilers that support precompilation, includes "wx/wx.h".
33#include "wx/wxprec.h"
34
35#ifdef __BORLANDC__
36 #pragma hdrstop
37#endif
38
39// for all others, include the necessary headers
40#ifndef WX_PRECOMP
41 #include "wx/wx.h"
42#endif
43
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44
45// many of the tests are specific to the builtin regex lib, so only attempts
46// to do them when using the builtin regex lib.
47//
48#ifdef wxHAS_REGEX_ADVANCED
49
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50#include "wx/regex.h"
51#include "wx/cppunit.h"
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52#include <string>
53#include <vector>
e70833fb 54
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55using CppUnit::Test;
56using CppUnit::TestCase;
57using CppUnit::TestSuite;
58using CppUnit::Exception;
59
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60using std::string;
61using std::vector;
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62
63///////////////////////////////////////////////////////////////////////////////
64// The test case - an instance represents a single test
65
66class RegExTestCase : public TestCase
67{
68public:
69 // constructor - create a single testcase
70 RegExTestCase(
71 const string& name,
72 const char *mode,
73 const char *id,
74 const char *flags,
75 const char *pattern,
76 const char *data,
77 const vector<const char *>& expected);
78
79protected:
80 // run this testcase
81 void runTest();
82
83private:
84 // workers
85 wxString Conv(const char *str);
86 void parseFlags(const wxString& flags);
87 void doTest(int flavor);
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88 static wxString quote(const wxString& arg);
89 const wxChar *convError() const { return _T("<cannot convert>"); }
90
91 // assertions - adds some information about the test that failed
92 void fail(const wxString& msg) const;
93 void failIf(bool condition, const wxString& msg) const
94 { if (condition) fail(msg); }
95
96 // mode, id, flags, pattern, test data, expected results...
97 int m_mode;
98 wxString m_id;
99 wxString m_flags;
100 wxString m_pattern;
101 wxString m_data;
102 wxArrayString m_expected;
103
104 // the flag decoded
105 int m_compileFlags;
106 int m_matchFlags;
107 bool m_basic;
108 bool m_extended;
109 bool m_advanced;
110};
111
112// constructor - throws Exception on failure
113//
114RegExTestCase::RegExTestCase(
115 const string& name,
116 const char *mode,
117 const char *id,
118 const char *flags,
119 const char *pattern,
120 const char *data,
121 const vector<const char *>& expected)
122 :
123 TestCase(name),
124 m_mode(mode[0]),
125 m_id(Conv(id)),
126 m_flags(Conv(flags)),
127 m_pattern(Conv(pattern)),
128 m_data(Conv(data)),
129 m_compileFlags(0),
130 m_matchFlags(0),
131 m_basic(false),
132 m_extended(false),
133 m_advanced(false)
134{
135 bool badconv = m_pattern == convError() || m_data == convError();
0868a030 136 std::vector<const char *>::const_iterator it;
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137
138 for (it = expected.begin(); it != expected.end(); ++it) {
139 m_expected.push_back(Conv(*it));
140 badconv = badconv || *m_expected.rbegin() == convError();
141 }
142
143 failIf(badconv, _T("cannot convert to default character encoding"));
3e5f6c1c 144
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145 // the flags need further parsing...
146 parseFlags(m_flags);
147
148#ifndef wxHAS_REGEX_ADVANCED
149 failIf(!m_basic && !m_extended, _T("advanced regexs not available"));
150#endif
151}
152
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153int wxWcscmp(const wchar_t* s1, const wchar_t* s2)
154{
155 size_t nLen1 = wxWcslen(s1);
156 size_t nLen2 = wxWcslen(s2);
3e5f6c1c 157
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158 if (nLen1 != nLen2)
159 return nLen1 - nLen2;
3e5f6c1c 160
0868a030 161 return wxTmemcmp(s1, s2, nLen1);
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162}
163
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164// convert a string from UTF8 to the internal encoding
165//
166wxString RegExTestCase::Conv(const char *str)
167{
168 const wxWCharBuffer wstr = wxConvUTF8.cMB2WC(str);
169 const wxWC2WXbuf buf = wxConvCurrent->cWC2WX(wstr);
170
30261041 171 if (!buf || wxWcscmp(wxConvCurrent->cWX2WC(buf), wstr) != 0)
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172 return convError();
173 else
174 return buf;
175}
176
177// Parse flags
178//
179void RegExTestCase::parseFlags(const wxString& flags)
180{
181 for (const wxChar *p = flags; *p; p++) {
182 switch (*p) {
183 // noop
184 case '-': break;
185
186 // we don't fully support these flags, but they don't stop us
187 // checking for success of failure of the match, so treat as noop
188 case 'A': case 'B': case 'E': case 'H':
189 case 'I': case 'L': case 'M': case 'N':
190 case 'P': case 'Q': case 'R': case 'S':
191 case 'T': case 'U': case '%':
192 break;
193
194 // match options
195 case '^': m_matchFlags |= wxRE_NOTBOL; break;
196 case '$': m_matchFlags |= wxRE_NOTEOL; break;
197#if wxUSE_UNICODE
198 case '*': break;
199#endif
200 // compile options
201 case '&': m_advanced = m_basic = true; break;
202 case 'b': m_basic = true; break;
203 case 'e': m_extended = true; break;
204 case 'i': m_compileFlags |= wxRE_ICASE; break;
205 case 'o': m_compileFlags |= wxRE_NOSUB; break;
206 case 'n': m_compileFlags |= wxRE_NEWLINE; break;
207 case 't': if (strchr("ep", m_mode)) break; // else fall through...
208
209 // anything else we must skip the test
210 default:
211 fail(wxString::Format(
212 _T("requires unsupported flag '%c'"), *p));
213 }
214 }
215}
216
217// Try test for all flavours of expression specified
218//
219void RegExTestCase::runTest()
220{
221 if (m_basic)
222 doTest(wxRE_BASIC);
223 if (m_extended)
224 doTest(wxRE_EXTENDED);
225#ifdef wxHAS_REGEX_ADVANCED
226 if (m_advanced || (!m_basic && !m_extended))
227 doTest(wxRE_ADVANCED);
228#endif
229}
3e5f6c1c 230
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231// Try the test for a single flavour of expression
232//
233void RegExTestCase::doTest(int flavor)
234{
235 wxRegEx re(m_pattern, m_compileFlags | flavor);
236
237 // 'e' - test that the pattern fails to compile
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238 if (m_mode == 'e') {
239 failIf(re.IsValid(), _T("compile succeeded (should fail)"));
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240 return;
241 }
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242 failIf(!re.IsValid(), _T("compile failed"));
243
244 bool matches = re.Matches(m_data, m_matchFlags);
245
246 // 'f' or 'p' - test that the pattern does not match
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247 if (m_mode == 'f' || m_mode == 'p') {
248 failIf(matches, _T("match succeeded (should fail)"));
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249 return;
250 }
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251
252 // otherwise 'm' or 'i' - test the pattern does match
253 failIf(!matches, _T("match failed"));
254
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255 if (m_compileFlags & wxRE_NOSUB)
256 return;
257
258 // check wxRegEx has correctly counted the number of subexpressions
259 failIf(m_expected.size() != re.GetMatchCount(),
260 wxString::Format(_T("GetMatchCount() == %d, expected %d"),
261 re.GetMatchCount(), m_expected.size()));
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262
263 wxString result;
264 size_t start, len;
265
266 for (size_t i = 0; i < m_expected.size(); i++) {
267 failIf(!re.GetMatch(&start, &len, i), wxString::Format(
268 _T("wxRegEx::GetMatch failed for match %d"), i));
269
270 // m - check the match returns the strings given
271 if (m_mode == 'm')
272 if (start < INT_MAX)
273 result = m_data.substr(start, len);
274 else
275 result = _T("");
276
277 // i - check the match returns the offsets given
278 else if (m_mode == 'i')
279 if (start < INT_MAX)
280 result = wxString::Format(_T("%d %d"), start, start + len - 1);
281 else
282 result = _T("-1 -1");
283
284 failIf(result != m_expected[i], wxString::Format(
285 _T("match(%d) == %s, expected == %s"), i,
286 quote(result).c_str(), quote(m_expected[i]).c_str()));
287 }
288}
289
290// assertion - adds some information about the test that failed
291//
292void RegExTestCase::fail(const wxString& msg) const
293{
294 wxString str;
295 wxArrayString::const_iterator it;
296
297 str << (wxChar)m_mode << _T(" ") << m_id << _T(" ") << m_flags << _T(" ")
298 << quote(m_pattern) << _T(" ") << quote(m_data);
299
300 for (it = m_expected.begin(); it != m_expected.end(); ++it)
301 str << _T(" ") << quote(*it);
3e5f6c1c 302
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303 if (str.length() > 77)
304 str = str.substr(0, 74) + _T("...");
305
306 str << _T("\n ") << msg;
307
308 // no lossy convs so using utf8
309 CPPUNIT_FAIL(string(str.mb_str(wxConvUTF8)));
310}
311
312// quote a string so that it can be displayed (static)
313//
314wxString RegExTestCase::quote(const wxString& arg)
315{
316 const wxChar *needEscape = _T("\a\b\t\n\v\f\r\"\\");
317 const wxChar *escapes = _T("abtnvfr\"\\");
318 wxString str;
319
320 for (size_t i = 0; i < arg.length(); i++) {
321 wxUChar ch = arg[i];
322 const wxChar *p = wxStrchr(needEscape, ch);
3e5f6c1c 323
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324 if (p)
325 str += wxString::Format(_T("\\%c"), escapes[p - needEscape]);
326 else if (wxIscntrl(ch))
327 str += wxString::Format(_T("\\%03o"), ch);
328 else
329 str += ch;
330 }
331
332 return str.length() == arg.length() && str.find(' ') == wxString::npos ?
333 str : _T("\"") + str + _T("\"");
334}
335
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336
337///////////////////////////////////////////////////////////////////////////////
338// Test suite
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339
340class RegExTestSuite : public TestSuite
341{
342public:
0d95d20c 343 RegExTestSuite(string name) : TestSuite(name) { }
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344 void add(const char *mode, const char *id, const char *flags,
345 const char *pattern, const char *data, const char *expected, ...);
346};
347
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348// Add a testcase to the suite
349//
350void RegExTestSuite::add(
351 const char *mode,
352 const char *id,
353 const char *flags,
354 const char *pattern,
355 const char *data,
356 const char *expected, ...)
357{
358 string name = getName() + "." + id;
359
360 vector<const char *> expected_results;
361 va_list ap;
362
363 for (va_start(ap, expected); expected; expected = va_arg(ap, const char *))
364 expected_results.push_back(expected);
365
366 va_end(ap);
3e5f6c1c 367
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368 try {
369 addTest(new RegExTestCase(
370 name, mode, id, flags, pattern, data, expected_results));
371 }
372 catch (Exception& e) {
373 wxLogInfo(wxString::Format(_T("skipping: %s\n %s\n"),
374 wxString(name.c_str(), wxConvUTF8).c_str(),
375 wxString(e.what(), wxConvUTF8).c_str()));
376 }
377}
378
379
380// Include the generated tests
381//
382#include "regex.inc"
383
384
385#endif // wxHAS_REGEX_ADVANCED