Replace FTS in the history_service with a brute force text search.

chrome/browser/history/query_parser_unittest.cc

 // Copyright (c) 2011 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 "base/basictypes.h"
 #include "base/memory/scoped_vector.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/history/query_parser.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+// Convenience macro to wrap a regexp expression in the expected format.
+#define REGEXP_WB "(\\b|[\\u0E00-\\u0E7F]|[\\u4E00-\\u9FFF])"
+#define REGEXP(MATCH_EXP) ("(?i).*" REGEXP_WB MATCH_EXP REGEXP_WB ".*")
+
 class QueryParserTest : public testing::Test {
  public:
   struct TestData {
     const char* input;
     const int expected_word_count;
   };
 
   std::string QueryToString(const std::string& query);
 
  protected:
@@ skipping 135 matching lines @@
     QueryParser parser;
     parser.ParseQueryWords(UTF8ToUTF16(data[i].text), &results);
     ASSERT_EQ(data[i].word_count, results.size());
     EXPECT_EQ(data[i].w1, UTF16ToUTF8(results[0]));
     if (results.size() == 2)
       EXPECT_EQ(data[i].w2, UTF16ToUTF8(results[1]));
     if (results.size() == 3)
       EXPECT_EQ(data[i].w3, UTF16ToUTF8(results[2]));
   }
 }
+
+// Test Regexp Queries.
+TEST_F(QueryParserTest, ParseRegexps) {
+  struct TestData3 {
+    const std::string text;
+    const std::string regexp1;
+    const std::string regexp2;
+    const std::string regexp3;
+    const size_t regexp_count;
+  } data[] = {
+    { "a",             REGEXP("a"), "", "",  1 },
+    { "foo",           REGEXP("foo\\w*"), "", "",  1 },
+    { "foo bar",       REGEXP("foo\\w*"), REGEXP("bar\\w*"), "",  2 },
+    { "\"foo bar\"",   REGEXP("foo\\W+bar"), "", "",  1 },
+    { "\"foo.com\"",   REGEXP("foo\\W+com"), "", "",  1 },
+    { "\"foo bar\" a", REGEXP("foo\\W+bar"), REGEXP("a"), "",  2 },
+    { "\"foo bar\" a", REGEXP("foo\\W+bar"), REGEXP("a"), "",  2 },
+    { "\"miss end",    REGEXP("miss\\W+end"), "", "", 1 },
+    { "miss beg\"",    REGEXP("miss\\w*"), REGEXP("beg\\w*"), "", 2 },
+    { "!#:/*foo#$*;'* the!#:/*bar",
+          REGEXP("foo\\w*"), REGEXP("the\\w*"), REGEXP("bar\\w*"), 3 }
+  };
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(data); ++i) {
+    std::vector<string16> results;
+    QueryParser parser;
+    parser.ParseQueryAsRegexps(UTF8ToUTF16(data[i].text), &results);
+    ASSERT_EQ(data[i].regexp_count, results.size());
+    EXPECT_EQ(data[i].regexp1, UTF16ToUTF8(results[0]));
+    if (results.size() == 2)
+      EXPECT_EQ(data[i].regexp2, UTF16ToUTF8(results[1]));
+    if (results.size() == 3)
+      EXPECT_EQ(data[i].regexp3, UTF16ToUTF8(results[2]));
+  }
+}