autofill: switch autofill_regexes to RE2 library

components/autofill/core/browser/form_field_unittest.cc

 // Copyright 2013 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/autofill/core/browser/form_field.h"
+
+#include <string>
+
 #include "base/memory/scoped_vector.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/autofill/core/browser/autofill_field.h"
-#include "components/autofill/core/browser/form_field.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::ASCIIToUTF16;
 
 namespace autofill {
 
 TEST(FormFieldTest, Match) {
   AutofillField field;
 
   // Empty strings match.
-  EXPECT_TRUE(FormField::Match(&field, base::string16(),
-                               FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, std::string(), FormField::MATCH_LABEL));
 
   // Empty pattern matches non-empty string.
   field.label = ASCIIToUTF16("a");
-  EXPECT_TRUE(FormField::Match(&field, base::string16(),
-                               FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, std::string(), FormField::MATCH_LABEL));
 
   // Strictly empty pattern matches empty string.
   field.label = base::string16();
-  EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("^$"),
-              FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, "^$", FormField::MATCH_LABEL));
 
   // Strictly empty pattern does not match non-empty string.
   field.label = ASCIIToUTF16("a");
-  EXPECT_FALSE(FormField::Match(&field, ASCIIToUTF16("^$"),
-               FormField::MATCH_LABEL));
+  EXPECT_FALSE(FormField::Match(&field, "^$", FormField::MATCH_LABEL));
 
   // Non-empty pattern doesn't match empty string.
   field.label = base::string16();
-  EXPECT_FALSE(FormField::Match(&field, ASCIIToUTF16("a"),
-               FormField::MATCH_LABEL));
+  EXPECT_FALSE(FormField::Match(&field, "a", FormField::MATCH_LABEL));
 
   // Beginning of line.
   field.label = ASCIIToUTF16("head_tail");
-  EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("^head"),
-              FormField::MATCH_LABEL));
-  EXPECT_FALSE(FormField::Match(&field, ASCIIToUTF16("^tail"),
-               FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, "^head", FormField::MATCH_LABEL));
+  EXPECT_FALSE(FormField::Match(&field, "^tail", FormField::MATCH_LABEL));
 
   // End of line.
   field.label = ASCIIToUTF16("head_tail");
-  EXPECT_FALSE(FormField::Match(&field, ASCIIToUTF16("head$"),
-               FormField::MATCH_LABEL));
-  EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("tail$"),
-              FormField::MATCH_LABEL));
+  EXPECT_FALSE(FormField::Match(&field, "head$", FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, "tail$", FormField::MATCH_LABEL));
 
   // Exact.
   field.label = ASCIIToUTF16("head_tail");
-  EXPECT_FALSE(FormField::Match(&field, ASCIIToUTF16("^head$"),
-               FormField::MATCH_LABEL));
-  EXPECT_FALSE(FormField::Match(&field, ASCIIToUTF16("^tail$"),
-               FormField::MATCH_LABEL));
-  EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("^head_tail$"),
-              FormField::MATCH_LABEL));
+  EXPECT_FALSE(FormField::Match(&field, "^head$", FormField::MATCH_LABEL));
+  EXPECT_FALSE(FormField::Match(&field, "^tail$", FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, "^head_tail$", FormField::MATCH_LABEL));
 
   // Escaped dots.
   field.label = ASCIIToUTF16("m.i.");
   // Note: This pattern is misleading as the "." characters are wild cards.
-  EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("m.i."),
-              FormField::MATCH_LABEL));
-  EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("m\\.i\\."),
-              FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, "m.i.", FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, "m\\.i\\.", FormField::MATCH_LABEL));
   field.label = ASCIIToUTF16("mXiX");
-  EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("m.i."),
-              FormField::MATCH_LABEL));
-  EXPECT_FALSE(FormField::Match(&field, ASCIIToUTF16("m\\.i\\."),
-               FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, "m.i.", FormField::MATCH_LABEL));
+  EXPECT_FALSE(FormField::Match(&field, "m\\.i\\.", FormField::MATCH_LABEL));
 
   // Repetition.
   field.label = ASCIIToUTF16("headtail");
-  EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("head.*tail"),
-              FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, "head.*tail", FormField::MATCH_LABEL));
   field.label = ASCIIToUTF16("headXtail");
-  EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("head.*tail"),
-              FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, "head.*tail", FormField::MATCH_LABEL));
   field.label = ASCIIToUTF16("headXXXtail");
-  EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("head.*tail"),
-              FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, "head.*tail", FormField::MATCH_LABEL));
   field.label = ASCIIToUTF16("headtail");
-  EXPECT_FALSE(FormField::Match(&field, ASCIIToUTF16("head.+tail"),
-               FormField::MATCH_LABEL));
+  EXPECT_FALSE(FormField::Match(&field, "head.+tail", FormField::MATCH_LABEL));
   field.label = ASCIIToUTF16("headXtail");
-  EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("head.+tail"),
-              FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, "head.+tail", FormField::MATCH_LABEL));
   field.label = ASCIIToUTF16("headXXXtail");
-  EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("head.+tail"),
-              FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, "head.+tail", FormField::MATCH_LABEL));
 
   // Alternation.
   field.label = ASCIIToUTF16("head_tail");
-  EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("head|other"),
-              FormField::MATCH_LABEL));
-  EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("tail|other"),
-              FormField::MATCH_LABEL));
-  EXPECT_FALSE(FormField::Match(&field, ASCIIToUTF16("bad|good"),
-               FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, "head|other", FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, "tail|other", FormField::MATCH_LABEL));
+  EXPECT_FALSE(FormField::Match(&field, "bad|good", FormField::MATCH_LABEL));
 
   // Case sensitivity.
   field.label = ASCIIToUTF16("xxxHeAd_tAiLxxx");
-  EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("head_tail"),
-              FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, "head_tail", FormField::MATCH_LABEL));
 
   // Word boundaries.
+  const std::string kWordBoundary = "(\\A|\\z|\\PL)";
   field.label = ASCIIToUTF16("contains word:");
-  EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("\\bword\\b"),
+  EXPECT_TRUE(FormField::Match(&field, kWordBoundary + "word" + kWordBoundary,
                                FormField::MATCH_LABEL));
-  EXPECT_FALSE(FormField::Match(&field, ASCIIToUTF16("\\bcon\\b"),
+  EXPECT_FALSE(FormField::Match(&field, kWordBoundary + "con" + kWordBoundary,
                                 FormField::MATCH_LABEL));
   // Make sure the circumflex in 'crepe' is not treated as a word boundary.
   field.label = base::UTF8ToUTF16("cr" "\xC3\xAA" "pe");
-  EXPECT_FALSE(FormField::Match(&field, ASCIIToUTF16("\\bcr\\b"),
+  EXPECT_FALSE(FormField::Match(&field, kWordBoundary + "cr" + kWordBoundary,
                                 FormField::MATCH_LABEL));
 }
 
 // Test that we ignore checkable elements.
 TEST(FormFieldTest, ParseFormFields) {
   ScopedVector<AutofillField> fields;
   FormFieldData field_data;
   field_data.form_control_type = "text";
 
   field_data.label = ASCIIToUTF16("Address line1");
@@ skipping 22 matching lines @@
   FormField::ParseFormFields(fields.get(), true, &field_type_map);
   ASSERT_EQ(3U, field_type_map.size());
 
   EXPECT_EQ(ADDRESS_HOME_LINE1,
             field_type_map.find(ASCIIToUTF16("Address line1"))->second);
   EXPECT_EQ(ADDRESS_HOME_LINE2,
             field_type_map.find(ASCIIToUTF16("Address line2"))->second);
 }
 
 }  // namespace autofill