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/*
* Copyright (c) 2015, Intel Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Intel Corporation nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "gtest/gtest.h"
#include "parser/Component.h"
#include "parser/Parser.h"
#include "parser/dump.h"
#include "parser/prefilter.h"
#include "parser/unsupported.h"
#include "hs.h"
#include <sstream>
using namespace ue2;
using std::ostringstream;
using std::unique_ptr;
struct PatternInfo {
const char *expr;
unsigned int flags;
};
class ParserTest : public testing::TestWithParam<PatternInfo> {};
TEST_P(ParserTest, clone) {
const PatternInfo &info = GetParam();
SCOPED_TRACE(info.expr);
// This tests that we can parse expr and then clone it, then verifies that
// the cloned component tree matches the original (using dump code for
// serialisation)
ParseMode mode(info.flags);
unique_ptr<Component> c(parse(info.expr, mode));
ASSERT_TRUE(c != nullptr);
#if defined(DUMP_SUPPORT)
ostringstream oss;
dumpTree(oss, c.get());
#endif
unique_ptr<Component> c_copy(c->clone());
ASSERT_TRUE(c_copy != nullptr);
c.reset(); // free original c
#if defined(DUMP_SUPPORT)
ostringstream oss_copy;
dumpTree(oss_copy, c_copy.get());
ASSERT_EQ(oss.str(), oss_copy.str());
#endif
}
TEST_P(ParserTest, prefilter) {
const PatternInfo &info = GetParam();
SCOPED_TRACE(info.expr);
ParseMode mode(info.flags);
unique_ptr<Component> c(parse(info.expr, mode));
ASSERT_TRUE(c != nullptr);
prefilterTree(c, mode);
ASSERT_TRUE(c != nullptr);
// Should now be supported.
ASSERT_NO_THROW(checkUnsupported(*c));
}
static const PatternInfo patterns[] = {
{ "easy literal", 0 },
{ "foo|bar|baz", 0 },
{ "(?>\\d+)foo", 0 },
{ "\\bhello\\b", 0 },
{ "a+ b+? c++", 0 },
{ "^bi-anchored$", 0 },
{ "\\C", 0 },
{ "\\X", HS_FLAG_UTF8 },
{ "\\w+", HS_FLAG_UTF8 | HS_FLAG_UCP },
{ "foo(?!bar).*baz", 0 },
{ "(hatstand.*teakettle){2,} badgerbrush(es)? \\1", 0 },
{ "a (pine)?(?(1)apple)", 0 },
{ "^(?(?=hello)[a-z]+|[a-z]{3})", 0 },
};
INSTANTIATE_TEST_CASE_P(Parser, ParserTest, testing::ValuesIn(patterns));
// teach google-test how to print a param
void PrintTo(const PatternInfo &p, ::std::ostream *os) {
*os << p.expr << ":" << p.flags;
}
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