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Matthew Barr
2015-10-20 09:13:35 +11:00
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unit/internal/nfagraph_width.cpp Normal file
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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 "nfagraph_common.h"
#include "gtest/gtest.h"
#include "compiler/compiler.h"
#include "nfagraph/ng.h"
#include "nfagraph/ng_builder.h"
#include "nfagraph/ng_width.h"
#include "grey.h"
#include "util/target_info.h"
#include "util/depth.h"
using namespace std;
using namespace testing;
using namespace ue2;
struct WidthTest {
string pattern;
depth minWidth;
depth maxWidth;
};
class NFAWidthTest : public TestWithParam<WidthTest> { };
static const WidthTest widthTests[] = {
{ "()", 0, 0 },
{ "a", 1, 1 },
{ "a?b", 1, 2 },
{ "foobar", 6, 6 },
{ "foo(bar)?", 3, 6 },
{ "(a|ab|abc|abcd)", 1, 4 },
{ "foo.*bar", 6, depth::infinity() },
{ "foo(bar)*", 3, depth::infinity() },
{ "foo(bar)+", 6, depth::infinity() },
{ "foo(bar){1,3}", 6, 12 },
{ "(abcd)+", 4, depth::infinity() },
{ "foo\\z", 3, 3 },
{ "^foo", 3, 3 },
{ "^foo|bar.*baz", 3, depth::infinity() },
{ "^foobar.*|baz", 3, depth::infinity() },
{ "foo(\\z|bar)", 3, 6 },
{ "foo(|bar\\z)", 3, 6 },
{ "foo.{0,15}bar", 6, 21 },
{ "foo.{0,15}.*bar", 6, depth::infinity() },
{ "(?smi)^(aa[^a]aa$|a|a+\\Z|a)", 1, depth::infinity() }
};
INSTANTIATE_TEST_CASE_P(NFAWidth, NFAWidthTest, ValuesIn(widthTests));
TEST_P(NFAWidthTest, Check) {
const WidthTest &t = GetParam();
SCOPED_TRACE(testing::Message() << "Pattern: " << t.pattern);
unique_ptr<NGWrapper> w(constructGraph(t.pattern, 0));
ASSERT_EQ(t.minWidth, findMinWidth(*w));
ASSERT_EQ(t.maxWidth, findMaxWidth(*w));
}