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- // Copyright 2014 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "components/query_parser/query_parser.h"
- #include <stddef.h>
- #include "base/strings/utf_string_conversions.h"
- #include "testing/gtest/include/gtest/gtest.h"
- namespace query_parser {
- class QueryParserTest : public testing::Test {
- public:
- struct TestData {
- const char* input;
- const int expected_word_count;
- };
- std::string QueryToString(const std::string& query);
- };
- // Test helper: Convert a user query string in 8-bit (for hardcoding
- // convenience) to a SQLite query string.
- std::string QueryParserTest::QueryToString(const std::string& query) {
- std::u16string sqlite_query;
- QueryParser::ParseQuery(base::UTF8ToUTF16(query), MatchingAlgorithm::DEFAULT,
- &sqlite_query);
- return base::UTF16ToUTF8(sqlite_query);
- }
- // Basic multi-word queries, including prefix matching.
- TEST_F(QueryParserTest, SimpleQueries) {
- EXPECT_EQ("", QueryToString(" "));
- EXPECT_EQ("singleword*", QueryToString("singleword"));
- EXPECT_EQ("spacedout*", QueryToString(" spacedout "));
- EXPECT_EQ("foo* bar*", QueryToString("foo bar"));
- // Short words aren't prefix matches. For Korean Hangul
- // the minimum is 2 while for other scripts, it's 3.
- EXPECT_EQ("f b", QueryToString(" f b"));
- // KA JANG
- EXPECT_EQ(base::WideToUTF8(L"\xAC00 \xC7A5"),
- QueryToString(base::WideToUTF8(L" \xAC00 \xC7A5")));
- EXPECT_EQ("foo* bar*", QueryToString(" foo bar "));
- // KA-JANG BICH-GO
- EXPECT_EQ(base::WideToUTF8(L"\xAC00\xC7A5* \xBE5B\xACE0*"),
- QueryToString(base::WideToUTF8(L"\xAC00\xC7A5 \xBE5B\xACE0")));
- }
- // Quoted substring parsing.
- TEST_F(QueryParserTest, Quoted) {
- // ASCII quotes
- EXPECT_EQ("\"Quoted\"", QueryToString("\"Quoted\""));
- // Missing end quotes
- EXPECT_EQ("\"miss end\"", QueryToString("\"miss end"));
- // Missing begin quotes
- EXPECT_EQ("miss* beg*", QueryToString("miss beg\""));
- // Weird formatting
- EXPECT_EQ("\"Many\" \"quotes\"", QueryToString("\"Many \"\"quotes"));
- }
- // Apostrophes within words should be preserved, but otherwise stripped.
- TEST_F(QueryParserTest, Apostrophes) {
- EXPECT_EQ("foo* bar's*", QueryToString("foo bar's"));
- EXPECT_EQ("l'foo*", QueryToString("l'foo"));
- EXPECT_EQ("foo*", QueryToString("'foo"));
- }
- // Special characters.
- TEST_F(QueryParserTest, SpecialChars) {
- EXPECT_EQ("foo* the* bar*", QueryToString("!#:/*foo#$*;'* the!#:/*bar"));
- }
- TEST_F(QueryParserTest, NumWords) {
- TestData data[] = {
- { "blah", 1 },
- { "foo \"bar baz\"", 3 },
- { "foo \"baz\"", 2 },
- { "foo \"bar baz\" blah", 4 },
- };
- for (size_t i = 0; i < std::size(data); ++i) {
- std::u16string query_string;
- EXPECT_EQ(
- data[i].expected_word_count,
- QueryParser::ParseQuery(base::UTF8ToUTF16(data[i].input),
- MatchingAlgorithm::DEFAULT, &query_string));
- }
- }
- TEST_F(QueryParserTest, ParseQueryNodesAndMatch) {
- struct TestData2 {
- const std::string query;
- const std::string text;
- const bool matches;
- const size_t m1_start;
- const size_t m1_end;
- const size_t m2_start;
- const size_t m2_end;
- } data[] = {
- { "foo", "fooey foo", true, 0, 3, 6, 9 },
- { "foo foo", "foo", true, 0, 3, 0, 0 },
- { "foo fooey", "fooey", true, 0, 5, 0, 0 },
- { "fooey foo", "fooey", true, 0, 5, 0, 0 },
- { "foo fooey bar", "bar fooey", true, 0, 3, 4, 9 },
- { "blah", "blah", true, 0, 4, 0, 0 },
- { "blah", "foo", false, 0, 0, 0, 0 },
- { "blah", "blahblah", true, 0, 4, 0, 0 },
- { "blah", "foo blah", true, 4, 8, 0, 0 },
- { "foo blah", "blah", false, 0, 0, 0, 0 },
- { "foo blah", "blahx foobar", true, 0, 4, 6, 9 },
- { "\"foo blah\"", "foo blah", true, 0, 8, 0, 0 },
- { "\"foo blah\"", "foox blahx", false, 0, 0, 0, 0 },
- { "\"foo blah\"", "foo blah", true, 0, 8, 0, 0 },
- { "\"foo blah\"", "\"foo blah\"", true, 1, 9, 0, 0 },
- { "foo blah", "\"foo bar blah\"", true, 1, 4, 9, 13 },
- };
- for (size_t i = 0; i < std::size(data); ++i) {
- query_parser::QueryNodeVector query_nodes;
- QueryParser::ParseQueryNodes(base::UTF8ToUTF16(data[i].query),
- MatchingAlgorithm::DEFAULT, &query_nodes);
- Snippet::MatchPositions match_positions;
- ASSERT_EQ(data[i].matches,
- QueryParser::DoesQueryMatch(base::UTF8ToUTF16(data[i].text),
- query_nodes, &match_positions));
- size_t offset = 0;
- if (data[i].m1_start != 0 || data[i].m1_end != 0) {
- ASSERT_TRUE(match_positions.size() >= 1);
- EXPECT_EQ(data[i].m1_start, match_positions[0].first);
- EXPECT_EQ(data[i].m1_end, match_positions[0].second);
- offset++;
- }
- if (data[i].m2_start != 0 || data[i].m2_end != 0) {
- ASSERT_TRUE(match_positions.size() == 1 + offset);
- EXPECT_EQ(data[i].m2_start, match_positions[offset].first);
- EXPECT_EQ(data[i].m2_end, match_positions[offset].second);
- }
- }
- }
- TEST_F(QueryParserTest, ParseQueryWords) {
- struct TestData2 {
- const std::string text;
- const std::string w1;
- const std::string w2;
- const std::string w3;
- const size_t word_count;
- } data[] = {
- { "foo", "foo", "", "", 1 },
- { "foo bar", "foo", "bar", "", 2 },
- { "\"foo bar\"", "foo", "bar", "", 2 },
- { "\"foo bar\" a", "foo", "bar", "a", 3 },
- };
- for (size_t i = 0; i < std::size(data); ++i) {
- std::vector<std::u16string> results;
- QueryParser::ParseQueryWords(base::UTF8ToUTF16(data[i].text),
- MatchingAlgorithm::DEFAULT, &results);
- ASSERT_EQ(data[i].word_count, results.size());
- EXPECT_EQ(data[i].w1, base::UTF16ToUTF8(results[0]));
- if (results.size() == 2)
- EXPECT_EQ(data[i].w2, base::UTF16ToUTF8(results[1]));
- if (results.size() == 3)
- EXPECT_EQ(data[i].w3, base::UTF16ToUTF8(results[2]));
- }
- }
- TEST_F(QueryParserTest, ParseQueryNodesAndMatchExact) {
- struct TestData2 {
- const std::string query;
- const std::string find_in_text;
- const bool matches;
- } data[] = {
- // Trivial cases.
- {"blah", "blah", true},
- {"blah", "foo", false},
- {"blah", "blahblah", false},
- {"blah", "foo blah", true},
- {"foo blah", "blah", false},
- {"foo blah", "blahx foobar", false},
- // Verify some prefix-match edge cases.
- {"foo", "fooey foo", true},
- {"foo foo", "foo", true},
- // Query contains a term that doesn't have an exact match in the text.
- {"foo fooey", "fooey", false},
- {"fooey foo", "fooey", false},
- {"foo fooey bar", "bar fooey", false},
- // Verify that quotes still work correctly.
- {"\"foo blah\"", "foo blah", true},
- {"\"foo blah\"", "foox blahx", false},
- {"\"foo blah\"", "\"foo blah\"", true},
- {"foo blah", "\"foo bar blah\"", true},
- };
- for (size_t i = 0; i < std::size(data); ++i) {
- SCOPED_TRACE(::testing::Message()
- << " Testing case i=" << i << " query=" << data[i].query
- << " find_in_text=" << data[i].find_in_text);
- QueryWordVector find_in_words;
- QueryParser::ExtractQueryWords(base::UTF8ToUTF16(data[i].find_in_text),
- &find_in_words);
- query_parser::QueryNodeVector query_nodes;
- QueryParser::ParseQueryNodes(base::UTF8ToUTF16(data[i].query),
- MatchingAlgorithm::DEFAULT, &query_nodes);
- EXPECT_EQ(data[i].matches, QueryParser::DoesQueryMatch(
- find_in_words, query_nodes, /*exact=*/true));
- }
- }
- } // namespace query_parser
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