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// Copyright (C) 2023 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "icing/query/advanced_query_parser/util/string-util.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "icing/testing/common-matchers.h"
namespace icing {
namespace lib {
namespace {
using ::testing::Eq;
using ::testing::IsEmpty;
TEST(StringUtilTest, UnescapeStringEmptyString) {
EXPECT_THAT(string_util::UnescapeStringValue(""), IsOkAndHolds(IsEmpty()));
}
TEST(StringUtilTest, UnescapeStringStringWithNoEscapes) {
EXPECT_THAT(string_util::UnescapeStringValue("foo"), IsOkAndHolds("foo"));
EXPECT_THAT(string_util::UnescapeStringValue("f o o"), IsOkAndHolds("f o o"));
EXPECT_THAT(string_util::UnescapeStringValue("f\to\to"),
IsOkAndHolds("f\to\to"));
EXPECT_THAT(string_util::UnescapeStringValue("f.o.o"), IsOkAndHolds("f.o.o"));
}
TEST(StringUtilTest, UnescapeStringStringWithEscapes) {
EXPECT_THAT(string_util::UnescapeStringValue("f\\oo"), IsOkAndHolds("foo"));
EXPECT_THAT(string_util::UnescapeStringValue("f\\\\oo"),
IsOkAndHolds("f\\oo"));
EXPECT_THAT(string_util::UnescapeStringValue("f\\\"oo"),
IsOkAndHolds("f\"oo"));
EXPECT_THAT(string_util::UnescapeStringValue("foo\\"), IsOkAndHolds("foo"));
EXPECT_THAT(string_util::UnescapeStringValue("foo b\\a\\\"r baz"),
IsOkAndHolds("foo ba\"r baz"));
EXPECT_THAT(string_util::UnescapeStringValue("bar b\\aar bar\\s bart"),
IsOkAndHolds("bar baar bars bart"));
EXPECT_THAT(string_util::UnescapeStringValue("\\\\\\\\a"),
IsOkAndHolds("\\\\a"));
}
TEST(StringUtilTest, UnescapeStringQuoteWithoutEscape) {
EXPECT_THAT(string_util::UnescapeStringValue("f\\o\"o"),
StatusIs(libtextclassifier3::StatusCode::INVALID_ARGUMENT));
EXPECT_THAT(string_util::UnescapeStringValue("f\"oo"),
StatusIs(libtextclassifier3::StatusCode::INVALID_ARGUMENT));
}
TEST(StringUtilTest, FindEscapedTokenEmptyUnescapedToken) {
EXPECT_THAT(string_util::FindEscapedToken("foo b\\a\\\"r baz", ""),
StatusIs(libtextclassifier3::StatusCode::INVALID_ARGUMENT));
}
TEST(StringUtilTest, FindEscapedTokenTokenNotPresent) {
EXPECT_THAT(string_util::FindEscapedToken("foo b\\a\\\"r baz", "elephant"),
StatusIs(libtextclassifier3::StatusCode::INVALID_ARGUMENT));
EXPECT_THAT(string_util::FindEscapedToken("foo b\\a\\\"r baz", "bat"),
StatusIs(libtextclassifier3::StatusCode::INVALID_ARGUMENT));
EXPECT_THAT(string_util::FindEscapedToken("foo b\\a\\\"r baz", "taz"),
StatusIs(libtextclassifier3::StatusCode::INVALID_ARGUMENT));
EXPECT_THAT(string_util::FindEscapedToken("foo b\\a\\\"r baz", "bazz"),
StatusIs(libtextclassifier3::StatusCode::INVALID_ARGUMENT));
}
TEST(StringUtilTest, FindEscapedTokenMatchInMiddleToken) {
EXPECT_THAT(string_util::FindEscapedToken("babar", "bar"),
IsOkAndHolds("bar"));
}
TEST(StringUtilTest, FindEscapedTokenMatches) {
EXPECT_THAT(string_util::FindEscapedToken("foo b\\a\\\"r baz", "ba\"r"),
IsOkAndHolds("b\\a\\\"r"));
EXPECT_THAT(string_util::FindEscapedToken("\\\\\\\\a", "\\\\a"),
IsOkAndHolds("\\\\\\\\a"));
}
TEST(StringUtilTest, FindEscapedTokenTraversesThroughEscapedText) {
std::string_view escaped_text = "bar b\\aar bar\\s bart";
ICING_ASSERT_OK_AND_ASSIGN(
std::string_view result,
string_util::FindEscapedToken(escaped_text, "bar"));
// escaped_text = "bar b\\aar bar\\s bart";
// escaped_token ^ ^
EXPECT_THAT(result, Eq("bar"));
// escaped_text = "b\\aar bar\\s bart";
// escaped_token ^ ^
const char* result_end = result.data() + result.length();
escaped_text = escaped_text.substr(result_end - escaped_text.data());
ICING_ASSERT_OK_AND_ASSIGN(
result, string_util::FindEscapedToken(escaped_text, "bar"));
EXPECT_THAT(result, Eq("bar"));
// escaped_text = "\\s bart";
// escaped_token ^ ^
result_end = result.data() + result.length();
escaped_text = escaped_text.substr(result_end - escaped_text.data());
ICING_ASSERT_OK_AND_ASSIGN(
result, string_util::FindEscapedToken(escaped_text, "bar"));
EXPECT_THAT(result, Eq("bar"));
result_end = result.data() + result.length();
escaped_text = escaped_text.substr(result_end - escaped_text.data());
EXPECT_THAT(string_util::FindEscapedToken(escaped_text, "bar"),
StatusIs(libtextclassifier3::StatusCode::INVALID_ARGUMENT));
}
} // namespace
} // namespace lib
} // namespace icing
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