[Autofill] Autofill incorrectly fills credit card expiration year in 2-digit fields.

components/autofill/core/browser/credit_card_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 "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/autofill/core/browser/autofill_field.h"
 #include "components/autofill/core/browser/autofill_scanner.h"
 #include "components/autofill/core/browser/credit_card_field.h"
@@ skipping 329 matching lines @@
   ASSERT_TRUE(
       field_type_map_.find(ASCIIToUTF16("number1")) != field_type_map_.end());
   EXPECT_EQ(CREDIT_CARD_NUMBER,
             field_type_map_[ASCIIToUTF16("number1")]);
   ASSERT_TRUE(
       field_type_map_.find(ASCIIToUTF16("date2")) != field_type_map_.end());
   EXPECT_EQ(CREDIT_CARD_EXP_DATE_4_DIGIT_YEAR,
             field_type_map_[ASCIIToUTF16("date2")]);
 }
 
+// Verify that heuristics <input name="ccyear" maxlength="2"/> considers
+// *maxlength* attribute while parsing 2 Digit expiration year.
+TEST_F(CreditCardFieldTest, ParseCreditCardExpYear_2DigitMaxLength) {
+  FormFieldData field;
+  field.form_control_type = "text";
+
+  field.label = ASCIIToUTF16("Card Number");
+  field.name = ASCIIToUTF16("card_number");
+  list_.push_back(new AutofillField(field, ASCIIToUTF16("number")));
+
+  field.label = ASCIIToUTF16("Expiration Date");
+  field.name = ASCIIToUTF16("ccmonth");
+  list_.push_back(new AutofillField(field, ASCIIToUTF16("month")));
+
+  field.name = ASCIIToUTF16("ccyear");
+  field.max_length = 2;
+  list_.push_back(new AutofillField(field, ASCIIToUTF16("year")));
+
+  Parse();
+  ASSERT_NE(static_cast<CreditCardField*>(NULL), field_.get());
+  EXPECT_TRUE(ClassifyField());
+  ASSERT_TRUE(field_type_map_.find(ASCIIToUTF16("number")) !=
+              field_type_map_.end());
+  EXPECT_EQ(CREDIT_CARD_NUMBER, field_type_map_[ASCIIToUTF16("number")]);
+  ASSERT_TRUE(field_type_map_.find(ASCIIToUTF16("month")) !=
+              field_type_map_.end());
+  EXPECT_EQ(CREDIT_CARD_EXP_MONTH, field_type_map_[ASCIIToUTF16("month")]);
+  ASSERT_TRUE(field_type_map_.find(ASCIIToUTF16("year")) !=
+              field_type_map_.end());
+  EXPECT_EQ(CREDIT_CARD_EXP_2_DIGIT_YEAR,
+            field_type_map_[ASCIIToUTF16("year")]);
+}
+
 }  // namespace autofill