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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/autofill/core/common/autofill_regexes.h"
// Keep these tests in sync with
// components/autofill/core/browser/pattern_provider/default_regex_patterns_unittest.cc
// These tests wil be superceded once the pattern provider launches.
#include <stddef.h>
#include <string>
#include <string_view>
#include "base/memory/ptr_util.h"
#include "base/strings/utf_string_conversions.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace autofill {
namespace {
bool MatchesRegex(std::u16string_view input,
std::u16string_view regex,
std::vector<std::u16string>* groups = nullptr) {
static base::NoDestructor<AutofillRegexCache> cache(ThreadSafe(true));
return autofill::MatchesRegex(input, *cache->GetRegexPattern(regex), groups);
}
std::optional<std::vector<std::u16string>> SplitByRegex(
std::u16string_view input,
std::string_view regex,
size_t max_groups) {
UErrorCode status = U_ZERO_ERROR;
std::unique_ptr<icu::RegexPattern> pattern = base::WrapUnique(
icu::RegexPattern::compile(icu::UnicodeString::fromUTF8(regex),
UREGEX_CASE_INSENSITIVE, status));
if (U_FAILURE(status)) {
return std::nullopt;
}
return autofill::SplitByRegex(input, *pattern, max_groups);
}
struct InputPatternTestCase {
const char16_t* const input;
const char16_t* const pattern;
};
class PositiveSampleTest : public testing::TestWithParam<InputPatternTestCase> {
};
TEST_P(PositiveSampleTest, SampleRegexes) {
auto test_case = GetParam();
SCOPED_TRACE(base::UTF16ToUTF8(test_case.input));
SCOPED_TRACE(base::UTF16ToUTF8(test_case.pattern));
EXPECT_TRUE(MatchesRegex(test_case.input, test_case.pattern));
}
INSTANTIATE_TEST_SUITE_P(AutofillRegexesTest,
PositiveSampleTest,
testing::Values(
// Empty pattern
InputPatternTestCase{u"", u""},
InputPatternTestCase{
u"Look, ma' -- a non-empty string!", u""},
// Substring
InputPatternTestCase{u"string", u"tri"},
// Substring at beginning
InputPatternTestCase{u"string", u"str"},
InputPatternTestCase{u"string", u"^str"},
// Substring at end
InputPatternTestCase{u"string", u"ring"},
InputPatternTestCase{u"string", u"ring$"},
// Case-insensitive
InputPatternTestCase{u"StRiNg", u"string"}));
class NegativeSampleTest : public testing::TestWithParam<InputPatternTestCase> {
};
TEST_P(NegativeSampleTest, SampleRegexes) {
auto test_case = GetParam();
SCOPED_TRACE(base::UTF16ToUTF8(test_case.input));
SCOPED_TRACE(base::UTF16ToUTF8(test_case.pattern));
EXPECT_FALSE(MatchesRegex(test_case.input, test_case.pattern));
}
INSTANTIATE_TEST_SUITE_P(AutofillRegexesTest,
NegativeSampleTest,
testing::Values(
// Empty string
InputPatternTestCase{
u"", u"Look, ma' -- a non-empty pattern!"},
// Substring
InputPatternTestCase{u"string", u"trn"},
// Substring at beginning
InputPatternTestCase{u"string", u" str"},
InputPatternTestCase{u"string", u"^tri"},
// Substring at end
InputPatternTestCase{u"string", u"ring "},
InputPatternTestCase{u"string", u"rin$"}));
// Tests for capture groups.
struct CapturePatternTestCase {
const char16_t* const input;
const char16_t* const pattern;
const bool matches;
const std::vector<std::u16string> groups;
};
class CaptureTest : public testing::TestWithParam<CapturePatternTestCase> {};
TEST_P(CaptureTest, SampleRegexes) {
auto test_case = GetParam();
std::vector<std::u16string> groups;
EXPECT_EQ(test_case.matches,
MatchesRegex(test_case.input, test_case.pattern, &groups));
EXPECT_THAT(groups, testing::Eq(test_case.groups));
}
INSTANTIATE_TEST_SUITE_P(
AutofillRegexes,
CaptureTest,
testing::Values(
// Find substrings in the input.
CapturePatternTestCase{u"Foo abcde Bar",
u"a(b+)c(d+)e",
true,
{u"abcde", u"b", u"d"}},
// Deal with optional capture groups.
CapturePatternTestCase{u"Foo acde Bar",
u"a(b+)?c(d+)e", // There is no b in the input.
true,
{u"acde", u"", u"d"}},
// Deal with non-matching capture groups.
CapturePatternTestCase{u"Foo acde Bar",
u"a(b+)c(d+)e", // There is no b in the input.
false,
{}}));
TEST(AutofillRegexes, SplitByRegex) {
EXPECT_EQ(SplitByRegex(u"이영 호", "[", 10), std::nullopt);
EXPECT_EQ(SplitByRegex(u"이영 호", " ", 10),
std::vector<std::u16string>({u"이영", u"호"}));
EXPECT_EQ(SplitByRegex(u"이영 호", " ", 1),
std::vector<std::u16string>({u"이영 호"}));
EXPECT_EQ(SplitByRegex(u"regex", " ", 10),
std::vector<std::u16string>({u"regex"}));
EXPECT_EQ(SplitByRegex(u"1 2 3", " ", 2),
std::vector<std::u16string>({u"1", u" 2 3"}));
EXPECT_EQ(SplitByRegex(u"", " ", 10), std::nullopt);
EXPECT_EQ(SplitByRegex(u" ", "\\s*", 10),
std::vector<std::u16string>({u"", u""}));
EXPECT_EQ(SplitByRegex(u"abcd", "\\s*", 10),
std::vector<std::u16string>({u"", u"a", u"b", u"c", u"d", u""}));
EXPECT_EQ(SplitByRegex(u"", "", 10), std::nullopt);
}
} // namespace
} // namespace autofill
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