wxWidgets/tests/regex/regex.cpp

380 lines
10 KiB
C++

///////////////////////////////////////////////////////////////////////////////
// Name: tests/regex/regex.cpp
// Purpose: Test the built-in regex lib and wxRegEx
// Author: Mike Wetherell
// RCS-ID: $Id$
// Copyright: (c) 2004 Mike Wetherell
// Licence: wxWidgets licence
///////////////////////////////////////////////////////////////////////////////
//
// Notes:
//
// To run just one section, say wx_1, do this:
// test regex.wx_1
//
// To run all the regex tests:
// test regex
//
// Some tests must be skipped since they use features which we do not make
// available through wxRegEx. To see the list of tests that have been skipped
// turn on verbose logging, e.g.:
// test --verbose regex
//
// The tests here are for the builtin library, tests for wxRegEx in general
// should go in wxregex.cpp
//
// The tests are generated from Henry Spencer's reg.test, additional test
// can be added in wxreg.test. These test files are then turned into a C++
// include file 'regex.inc' (included below) using a script 'regex.pl'.
//
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
// for all others, include the necessary headers
#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif
#include "wx/regex.h"
#include "wx/cppunit.h"
#include <stdexcept>
using namespace std;
using namespace CppUnit;
// many of the tests are specific to the builtin regex lib, so only attempts
// to do them when using the builtin regex lib.
//
#ifdef wxHAS_REGEX_ADVANCED
///////////////////////////////////////////////////////////////////////////////
// The test case - an instance represents a single test
class RegExTestCase : public TestCase
{
public:
// constructor - create a single testcase
RegExTestCase(
const string& name,
const char *mode,
const char *id,
const char *flags,
const char *pattern,
const char *data,
const vector<const char *>& expected);
protected:
// run this testcase
void runTest();
private:
// workers
wxString Conv(const char *str);
void parseFlags(const wxString& flags);
void doTest(int flavor);
static wxString quote(const wxString& arg);
const wxChar *convError() const { return _T("<cannot convert>"); }
// assertions - adds some information about the test that failed
void fail(const wxString& msg) const;
void failIf(bool condition, const wxString& msg) const
{ if (condition) fail(msg); }
// mode, id, flags, pattern, test data, expected results...
int m_mode;
wxString m_id;
wxString m_flags;
wxString m_pattern;
wxString m_data;
wxArrayString m_expected;
// the flag decoded
int m_compileFlags;
int m_matchFlags;
bool m_basic;
bool m_extended;
bool m_advanced;
};
// constructor - throws Exception on failure
//
RegExTestCase::RegExTestCase(
const string& name,
const char *mode,
const char *id,
const char *flags,
const char *pattern,
const char *data,
const vector<const char *>& expected)
:
TestCase(name),
m_mode(mode[0]),
m_id(Conv(id)),
m_flags(Conv(flags)),
m_pattern(Conv(pattern)),
m_data(Conv(data)),
m_compileFlags(0),
m_matchFlags(0),
m_basic(false),
m_extended(false),
m_advanced(false)
{
bool badconv = m_pattern == convError() || m_data == convError();
vector<const char *>::const_iterator it;
for (it = expected.begin(); it != expected.end(); ++it) {
m_expected.push_back(Conv(*it));
badconv = badconv || *m_expected.rbegin() == convError();
}
failIf(badconv, _T("cannot convert to default character encoding"));
// the flags need further parsing...
parseFlags(m_flags);
#ifndef wxHAS_REGEX_ADVANCED
failIf(!m_basic && !m_extended, _T("advanced regexs not available"));
#endif
}
int wxWcscmp(const wchar_t* s1, const wchar_t* s2)
{
size_t nLen1 = wxWcslen(s1);
size_t nLen2 = wxWcslen(s2);
if (nLen1 != nLen2)
return nLen1 - nLen2;
return wxMemcmp(s1, s2, nLen1);
}
// convert a string from UTF8 to the internal encoding
//
wxString RegExTestCase::Conv(const char *str)
{
const wxWCharBuffer wstr = wxConvUTF8.cMB2WC(str);
const wxWC2WXbuf buf = wxConvCurrent->cWC2WX(wstr);
if (!buf || wxWcscmp(wxConvCurrent->cWX2WC(buf), wstr) != 0)
return convError();
else
return buf;
}
// Parse flags
//
void RegExTestCase::parseFlags(const wxString& flags)
{
for (const wxChar *p = flags; *p; p++) {
switch (*p) {
// noop
case '-': break;
// we don't fully support these flags, but they don't stop us
// checking for success of failure of the match, so treat as noop
case 'A': case 'B': case 'E': case 'H':
case 'I': case 'L': case 'M': case 'N':
case 'P': case 'Q': case 'R': case 'S':
case 'T': case 'U': case '%':
break;
// match options
case '^': m_matchFlags |= wxRE_NOTBOL; break;
case '$': m_matchFlags |= wxRE_NOTEOL; break;
#if wxUSE_UNICODE
case '*': break;
#endif
// compile options
case '&': m_advanced = m_basic = true; break;
case 'b': m_basic = true; break;
case 'e': m_extended = true; break;
case 'i': m_compileFlags |= wxRE_ICASE; break;
case 'o': m_compileFlags |= wxRE_NOSUB; break;
case 'n': m_compileFlags |= wxRE_NEWLINE; break;
case 't': if (strchr("ep", m_mode)) break; // else fall through...
// anything else we must skip the test
default:
fail(wxString::Format(
_T("requires unsupported flag '%c'"), *p));
}
}
}
// Try test for all flavours of expression specified
//
void RegExTestCase::runTest()
{
if (m_basic)
doTest(wxRE_BASIC);
if (m_extended)
doTest(wxRE_EXTENDED);
#ifdef wxHAS_REGEX_ADVANCED
if (m_advanced || (!m_basic && !m_extended))
doTest(wxRE_ADVANCED);
#endif
}
// Try the test for a single flavour of expression
//
void RegExTestCase::doTest(int flavor)
{
wxRegEx re(m_pattern, m_compileFlags | flavor);
// 'e' - test that the pattern fails to compile
if (m_mode == 'e') {
failIf(re.IsValid(), _T("compile succeeded (should fail)"));
return;
}
failIf(!re.IsValid(), _T("compile failed"));
bool matches = re.Matches(m_data, m_matchFlags);
// 'f' or 'p' - test that the pattern does not match
if (m_mode == 'f' || m_mode == 'p') {
failIf(matches, _T("match succeeded (should fail)"));
return;
}
// otherwise 'm' or 'i' - test the pattern does match
failIf(!matches, _T("match failed"));
if (m_compileFlags & wxRE_NOSUB)
return;
// check wxRegEx has correctly counted the number of subexpressions
failIf(m_expected.size() != re.GetMatchCount(),
wxString::Format(_T("GetMatchCount() == %d, expected %d"),
re.GetMatchCount(), m_expected.size()));
wxString result;
size_t start, len;
for (size_t i = 0; i < m_expected.size(); i++) {
failIf(!re.GetMatch(&start, &len, i), wxString::Format(
_T("wxRegEx::GetMatch failed for match %d"), i));
// m - check the match returns the strings given
if (m_mode == 'm')
if (start < INT_MAX)
result = m_data.substr(start, len);
else
result = _T("");
// i - check the match returns the offsets given
else if (m_mode == 'i')
if (start < INT_MAX)
result = wxString::Format(_T("%d %d"), start, start + len - 1);
else
result = _T("-1 -1");
failIf(result != m_expected[i], wxString::Format(
_T("match(%d) == %s, expected == %s"), i,
quote(result).c_str(), quote(m_expected[i]).c_str()));
}
}
// assertion - adds some information about the test that failed
//
void RegExTestCase::fail(const wxString& msg) const
{
wxString str;
wxArrayString::const_iterator it;
str << (wxChar)m_mode << _T(" ") << m_id << _T(" ") << m_flags << _T(" ")
<< quote(m_pattern) << _T(" ") << quote(m_data);
for (it = m_expected.begin(); it != m_expected.end(); ++it)
str << _T(" ") << quote(*it);
if (str.length() > 77)
str = str.substr(0, 74) + _T("...");
str << _T("\n ") << msg;
// no lossy convs so using utf8
CPPUNIT_FAIL(string(str.mb_str(wxConvUTF8)));
}
// quote a string so that it can be displayed (static)
//
wxString RegExTestCase::quote(const wxString& arg)
{
const wxChar *needEscape = _T("\a\b\t\n\v\f\r\"\\");
const wxChar *escapes = _T("abtnvfr\"\\");
wxString str;
for (size_t i = 0; i < arg.length(); i++) {
wxUChar ch = arg[i];
const wxChar *p = wxStrchr(needEscape, ch);
if (p)
str += wxString::Format(_T("\\%c"), escapes[p - needEscape]);
else if (wxIscntrl(ch))
str += wxString::Format(_T("\\%03o"), ch);
else
str += ch;
}
return str.length() == arg.length() && str.find(' ') == wxString::npos ?
str : _T("\"") + str + _T("\"");
}
///////////////////////////////////////////////////////////////////////////////
// Test suite
class RegExTestSuite : public TestSuite
{
public:
RegExTestSuite(string name) : TestSuite(name) { }
void add(const char *mode, const char *id, const char *flags,
const char *pattern, const char *data, const char *expected, ...);
};
// Add a testcase to the suite
//
void RegExTestSuite::add(
const char *mode,
const char *id,
const char *flags,
const char *pattern,
const char *data,
const char *expected, ...)
{
string name = getName() + "." + id;
vector<const char *> expected_results;
va_list ap;
for (va_start(ap, expected); expected; expected = va_arg(ap, const char *))
expected_results.push_back(expected);
va_end(ap);
try {
addTest(new RegExTestCase(
name, mode, id, flags, pattern, data, expected_results));
}
catch (Exception& e) {
wxLogInfo(wxString::Format(_T("skipping: %s\n %s\n"),
wxString(name.c_str(), wxConvUTF8).c_str(),
wxString(e.what(), wxConvUTF8).c_str()));
}
}
// Include the generated tests
//
#include "regex.inc"
#endif // wxHAS_REGEX_ADVANCED