Revert 94426 - Removed wchat_t from Time::FromString.

base/pr_time_unittest.cc

Index: base/pr_time_unittest.cc
===================================================================
--- base/pr_time_unittest.cc	(revision 94426)
+++ base/pr_time_unittest.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2008 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.
 
@@ -132,6 +132,122 @@
   EXPECT_EQ(parsed_time, comparison_time_pdt);
 }
 
+// This tests the Time::FromString wrapper over PR_ParseTimeString
+TEST_F(PRTimeTest, ParseTimeTest10) {
+  Time parsed_time;
+  bool result = Time::FromString(L"15/10/07 12:45", &parsed_time);
+  EXPECT_TRUE(result);
+
+  time_t computed_time = parsed_time.ToTimeT();
+  time_t time_to_compare = comparison_time_local_ /
+                           Time::kMicrosecondsPerSecond;
+  EXPECT_EQ(computed_time, time_to_compare);
+}
+
+// This tests the Time::FromString wrapper over PR_ParseTimeString
+TEST_F(PRTimeTest, ParseTimeTest11) {
+  Time parsed_time;
+  bool result = Time::FromString(L"Mon, 15 Oct 2007 19:45:00 GMT",
+                                 &parsed_time);
+  EXPECT_TRUE(result);
+
+  time_t computed_time = parsed_time.ToTimeT();
+  time_t time_to_compare = comparison_time_pdt / Time::kMicrosecondsPerSecond;
+  EXPECT_EQ(computed_time, time_to_compare);
+}
+
+// Test some of edge cases around epoch, etc.
+TEST_F(PRTimeTest, ParseTimeTestEpoch0) {
+  Time parsed_time;
+
+  // time_t == epoch == 0
+  EXPECT_TRUE(Time::FromString(L"Thu Jan 01 01:00:00 +0100 1970",
+                               &parsed_time));
+  EXPECT_EQ(0, parsed_time.ToTimeT());
+  EXPECT_TRUE(Time::FromString(L"Thu Jan 01 00:00:00 GMT 1970",
+                               &parsed_time));
+  EXPECT_EQ(0, parsed_time.ToTimeT());
+}
+
+TEST_F(PRTimeTest, ParseTimeTestEpoch1) {
+  Time parsed_time;
+
+  // time_t == 1 second after epoch == 1
+  EXPECT_TRUE(Time::FromString(L"Thu Jan 01 01:00:01 +0100 1970",
+                               &parsed_time));
+  EXPECT_EQ(1, parsed_time.ToTimeT());
+  EXPECT_TRUE(Time::FromString(L"Thu Jan 01 00:00:01 GMT 1970",
+                               &parsed_time));
+  EXPECT_EQ(1, parsed_time.ToTimeT());
+}
+
+TEST_F(PRTimeTest, ParseTimeTestEpoch2) {
+  Time parsed_time;
+
+  // time_t == 2 seconds after epoch == 2
+  EXPECT_TRUE(Time::FromString(L"Thu Jan 01 01:00:02 +0100 1970",
+                               &parsed_time));
+  EXPECT_EQ(2, parsed_time.ToTimeT());
+  EXPECT_TRUE(Time::FromString(L"Thu Jan 01 00:00:02 GMT 1970",
+                               &parsed_time));
+  EXPECT_EQ(2, parsed_time.ToTimeT());
+}
+
+TEST_F(PRTimeTest, ParseTimeTestEpochNeg1) {
+  Time parsed_time;
+
+  // time_t == 1 second before epoch == -1
+  EXPECT_TRUE(Time::FromString(L"Thu Jan 01 00:59:59 +0100 1970",
+                               &parsed_time));
+  EXPECT_EQ(-1, parsed_time.ToTimeT());
+  EXPECT_TRUE(Time::FromString(L"Wed Dec 31 23:59:59 GMT 1969",
+                               &parsed_time));
+  EXPECT_EQ(-1, parsed_time.ToTimeT());
+}
+
+// If time_t is 32 bits, a date after year 2038 will overflow time_t and
+// cause timegm() to return -1.  The parsed time should not be 1 second
+// before epoch.
+TEST_F(PRTimeTest, ParseTimeTestEpochNotNeg1) {
+  Time parsed_time;
+
+  EXPECT_TRUE(Time::FromString(L"Wed Dec 31 23:59:59 GMT 2100",
+                               &parsed_time));
+  EXPECT_NE(-1, parsed_time.ToTimeT());
+}
+
+TEST_F(PRTimeTest, ParseTimeTestEpochNeg2) {
+  Time parsed_time;
+
+  // time_t == 2 seconds before epoch == -2
+  EXPECT_TRUE(Time::FromString(L"Thu Jan 01 00:59:58 +0100 1970",
+                               &parsed_time));
+  EXPECT_EQ(-2, parsed_time.ToTimeT());
+  EXPECT_TRUE(Time::FromString(L"Wed Dec 31 23:59:58 GMT 1969",
+                               &parsed_time));
+  EXPECT_EQ(-2, parsed_time.ToTimeT());
+}
+
+TEST_F(PRTimeTest, ParseTimeTestEpoch1960) {
+  Time parsed_time;
+
+  // time_t before Epoch, in 1960
+  EXPECT_TRUE(Time::FromString(L"Wed Jun 29 19:40:01 +0100 1960",
+                               &parsed_time));
+  EXPECT_EQ(-299999999, parsed_time.ToTimeT());
+  EXPECT_TRUE(Time::FromString(L"Wed Jun 29 18:40:01 GMT 1960",
+                               &parsed_time));
+  EXPECT_EQ(-299999999, parsed_time.ToTimeT());
+  EXPECT_TRUE(Time::FromString(L"Wed Jun 29 17:40:01 GMT 1960",
+                               &parsed_time));
+  EXPECT_EQ(-300003599, parsed_time.ToTimeT());
+}
+
+TEST_F(PRTimeTest, ParseTimeTestEmpty) {
+  Time parsed_time;
+  EXPECT_FALSE(Time::FromString(L"", &parsed_time));
+}
+
 // This test should not crash when compiled with Visual C++ 2005 (see
 // http://crbug.com/4387).
 TEST_F(PRTimeTest, ParseTimeTestOutOfRange) {