[Chrome OS] Refactor Canonicalize() method into base class to prepare for new Authenticator subclass

chrome/browser/chromeos/login/authenticator_unittest.cc

+// Copyright (c) 2010 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 "chrome/browser/chromeos/login/authenticator.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace chromeos {
+
+TEST(AuthenticatorTest, EmailAddressNoOp) {
+  const char lower_case[] = "user@what.com";
+  EXPECT_EQ(lower_case, Authenticator::Canonicalize(lower_case));
+}
+
+TEST(AuthenticatorTest, EmailAddressIgnoreCaps) {
+  EXPECT_EQ(Authenticator::Canonicalize("user@what.com"),
+            Authenticator::Canonicalize("UsEr@what.com"));
+}
+
+TEST(AuthenticatorTest, EmailAddressIgnoreDomainCaps) {
+  EXPECT_EQ(Authenticator::Canonicalize("user@what.com"),
+            Authenticator::Canonicalize("UsEr@what.COM"));
+}
+
+TEST(AuthenticatorTest, EmailAddressIgnoreOneUsernameDot) {
+  EXPECT_EQ(Authenticator::Canonicalize("us.er@what.com"),
+            Authenticator::Canonicalize("UsEr@what.com"));
+}
+
+TEST(AuthenticatorTest, EmailAddressIgnoreManyUsernameDots) {
+  EXPECT_EQ(Authenticator::Canonicalize("u.ser@what.com"),
+            Authenticator::Canonicalize("Us.E.r@what.com"));
+}
+
+TEST(AuthenticatorTest, EmailAddressIgnoreConsecutiveUsernameDots) {
+  EXPECT_EQ(Authenticator::Canonicalize("use.r@what.com"),
+            Authenticator::Canonicalize("Us....E.r@what.com"));
+}
+
+TEST(AuthenticatorTest, EmailAddressDifferentOnesRejected) {
+  EXPECT_NE(Authenticator::Canonicalize("who@what.com"),
+            Authenticator::Canonicalize("Us....E.r@what.com"));
+}
+
+TEST(AuthenticatorTest, EmailAddressIgnorePlusSuffix) {
+  EXPECT_EQ(Authenticator::Canonicalize("user+cc@what.com"),
+            Authenticator::Canonicalize("user@what.com"));
+}
+
+TEST(AuthenticatorTest, EmailAddressIgnoreMultiPlusSuffix) {
+  EXPECT_EQ(Authenticator::Canonicalize("user+cc+bcc@what.com"),
+            Authenticator::Canonicalize("user@what.com"));
+}
+
+}  // namespace chromeos