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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/181393">181393</a></dd>
<dt>Author</dt> <dd>bfulgham@apple.com</dd>
<dt>Date</dt> <dd>2015-03-11 10:49:04 -0700 (Wed, 11 Mar 2015)</dd>
</dl>

<h3>Log Message</h3>
<pre>Add some DateMath tests to TestWebKitAPI
https://bugs.webkit.org/show_bug.cgi?id=142565

Reviewed by Alexey Proskuryakov.

* TestWebKitAPI/CMakeLists.txt: Add new DateMath.cpp file.
* TestWebKitAPI/TestWebKitAPI.vcxproj/TestWebKitAPI.vcxproj: Ditto.
* TestWebKitAPI/TestWebKitAPI.vcxproj/TestWebKitAPI.vcxproj.filters: Ditto.
* TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj: Ditto.&quot;
* TestWebKitAPI/Tests/WTF/DateMath.cpp: Added.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkToolsChangeLog">trunk/Tools/ChangeLog</a></li>
<li><a href="#trunkToolsTestWebKitAPICMakeListstxt">trunk/Tools/TestWebKitAPI/CMakeLists.txt</a></li>
<li><a href="#trunkToolsTestWebKitAPITestWebKitAPIvcxprojTestWebKitAPIvcxproj">trunk/Tools/TestWebKitAPI/TestWebKitAPI.vcxproj/TestWebKitAPI.vcxproj</a></li>
<li><a href="#trunkToolsTestWebKitAPITestWebKitAPIvcxprojTestWebKitAPIvcxprojfilters">trunk/Tools/TestWebKitAPI/TestWebKitAPI.vcxproj/TestWebKitAPI.vcxproj.filters</a></li>
<li><a href="#trunkToolsTestWebKitAPITestWebKitAPIxcodeprojprojectpbxproj">trunk/Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#trunkToolsTestWebKitAPITestsWTFDateMathcpp">trunk/Tools/TestWebKitAPI/Tests/WTF/DateMath.cpp</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkToolsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Tools/ChangeLog (181392 => 181393)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Tools/ChangeLog        2015-03-11 17:47:38 UTC (rev 181392)
+++ trunk/Tools/ChangeLog        2015-03-11 17:49:04 UTC (rev 181393)
</span><span class="lines">@@ -1,3 +1,16 @@
</span><ins>+2015-03-11  Brent Fulgham  &lt;bfulgham@apple.com&gt;
+
+        Add some DateMath tests to TestWebKitAPI
+        https://bugs.webkit.org/show_bug.cgi?id=142565
+
+        Reviewed by Alexey Proskuryakov.
+
+        * TestWebKitAPI/CMakeLists.txt: Add new DateMath.cpp file.
+        * TestWebKitAPI/TestWebKitAPI.vcxproj/TestWebKitAPI.vcxproj: Ditto.
+        * TestWebKitAPI/TestWebKitAPI.vcxproj/TestWebKitAPI.vcxproj.filters: Ditto.
+        * TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj: Ditto.&quot;
+        * TestWebKitAPI/Tests/WTF/DateMath.cpp: Added.
+
</ins><span class="cx"> 2015-03-10  Brent Fulgham  &lt;bfulgham@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Regression(r181257): WTF_WorkQueue.Simple is flaky
</span></span></pre></div>
<a id="trunkToolsTestWebKitAPICMakeListstxt"></a>
<div class="modfile"><h4>Modified: trunk/Tools/TestWebKitAPI/CMakeLists.txt (181392 => 181393)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Tools/TestWebKitAPI/CMakeLists.txt        2015-03-11 17:47:38 UTC (rev 181392)
+++ trunk/Tools/TestWebKitAPI/CMakeLists.txt        2015-03-11 17:49:04 UTC (rev 181393)
</span><span class="lines">@@ -77,6 +77,7 @@
</span><span class="cx">     ${TESTWEBKITAPI_DIR}/Tests/WTF/AtomicString.cpp
</span><span class="cx">     ${TESTWEBKITAPI_DIR}/Tests/WTF/CString.cpp
</span><span class="cx">     ${TESTWEBKITAPI_DIR}/Tests/WTF/CheckedArithmeticOperations.cpp
</span><ins>+    ${TESTWEBKITAPI_DIR}/Tests/WTF/DateMath.cpp
</ins><span class="cx">     ${TESTWEBKITAPI_DIR}/Tests/WTF/Deque.cpp
</span><span class="cx">     ${TESTWEBKITAPI_DIR}/Tests/WTF/Functional.cpp
</span><span class="cx">     ${TESTWEBKITAPI_DIR}/Tests/WTF/HashMap.cpp
</span></span></pre></div>
<a id="trunkToolsTestWebKitAPITestWebKitAPIvcxprojTestWebKitAPIvcxproj"></a>
<div class="modfile"><h4>Modified: trunk/Tools/TestWebKitAPI/TestWebKitAPI.vcxproj/TestWebKitAPI.vcxproj (181392 => 181393)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Tools/TestWebKitAPI/TestWebKitAPI.vcxproj/TestWebKitAPI.vcxproj        2015-03-11 17:47:38 UTC (rev 181392)
+++ trunk/Tools/TestWebKitAPI/TestWebKitAPI.vcxproj/TestWebKitAPI.vcxproj        2015-03-11 17:49:04 UTC (rev 181393)
</span><span class="lines">@@ -313,6 +313,7 @@
</span><span class="cx">     &lt;ClCompile Include=&quot;..\Tests\WTF\cf\RetainPtrHashing.cpp&quot; /&gt;
</span><span class="cx">     &lt;ClCompile Include=&quot;..\Tests\WTF\CheckedArithmeticOperations.cpp&quot; /&gt;
</span><span class="cx">     &lt;ClCompile Include=&quot;..\Tests\WTF\CString.cpp&quot; /&gt;
</span><ins>+    &lt;ClCompile Include=&quot;..\Tests\WTF\DateMath.cpp&quot; /&gt;
</ins><span class="cx">     &lt;ClCompile Include=&quot;..\Tests\WTF\Deque.cpp&quot; /&gt;
</span><span class="cx">     &lt;ClCompile Include=&quot;..\Tests\WTF\Functional.cpp&quot; /&gt;
</span><span class="cx">     &lt;ClCompile Include=&quot;..\Tests\WTF\HashMap.cpp&quot; /&gt;
</span></span></pre></div>
<a id="trunkToolsTestWebKitAPITestWebKitAPIvcxprojTestWebKitAPIvcxprojfilters"></a>
<div class="modfile"><h4>Modified: trunk/Tools/TestWebKitAPI/TestWebKitAPI.vcxproj/TestWebKitAPI.vcxproj.filters (181392 => 181393)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Tools/TestWebKitAPI/TestWebKitAPI.vcxproj/TestWebKitAPI.vcxproj.filters        2015-03-11 17:47:38 UTC (rev 181392)
+++ trunk/Tools/TestWebKitAPI/TestWebKitAPI.vcxproj/TestWebKitAPI.vcxproj.filters        2015-03-11 17:49:04 UTC (rev 181393)
</span><span class="lines">@@ -169,6 +169,9 @@
</span><span class="cx">     &lt;ClCompile Include=&quot;..\Tests\WTF\WorkQueue.cpp&quot;&gt;
</span><span class="cx">       &lt;Filter&gt;Tests\WTF&lt;/Filter&gt;
</span><span class="cx">     &lt;/ClCompile&gt;
</span><ins>+    &lt;ClCompile Include=&quot;..\Tests\WTF\DateMath.cpp&quot;&gt;
+      &lt;Filter&gt;Tests\WTF&lt;/Filter&gt;
+    &lt;/ClCompile&gt;
</ins><span class="cx">   &lt;/ItemGroup&gt;
</span><span class="cx">   &lt;ItemGroup&gt;
</span><span class="cx">     &lt;None Include=&quot;TestWebKitAPIPostBuild.cmd&quot; /&gt;
</span></span></pre></div>
<a id="trunkToolsTestWebKitAPITestWebKitAPIxcodeprojprojectpbxproj"></a>
<div class="modfile"><h4>Modified: trunk/Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj (181392 => 181393)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj        2015-03-11 17:47:38 UTC (rev 181392)
+++ trunk/Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj        2015-03-11 17:49:04 UTC (rev 181393)
</span><span class="lines">@@ -56,6 +56,7 @@
</span><span class="cx">                 7673499D1930C5BB00E44DF9 /* StopLoadingDuringDidFailProvisionalLoad_bundle.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 7673499A1930182E00E44DF9 /* StopLoadingDuringDidFailProvisionalLoad_bundle.cpp */; };
</span><span class="cx">                 76E182DD1547569100F1FADD /* WillSendSubmitEvent_Bundle.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 76E182DC1547569100F1FADD /* WillSendSubmitEvent_Bundle.cpp */; };
</span><span class="cx">                 76E182DF154767E600F1FADD /* auto-submitting-form.html in Copy Resources */ = {isa = PBXBuildFile; fileRef = 76E182DE15475A8300F1FADD /* auto-submitting-form.html */; };
</span><ins>+                7AA021BB1AB09EA70052953F /* DateMath.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 7AA021BA1AB09EA70052953F /* DateMath.cpp */; };
</ins><span class="cx">                 7AA6A1521AAC0B31002B2ED3 /* WorkQueue.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 7AA6A1511AAC0B31002B2ED3 /* WorkQueue.cpp */; };
</span><span class="cx">                 7C486BA11AA12567003F6F9B /* bundle-file.html in Copy Resources */ = {isa = PBXBuildFile; fileRef = 7C486BA01AA1254B003F6F9B /* bundle-file.html */; };
</span><span class="cx">                 7C54A4BE1AA11CCA00380F78 /* WKBundleFileHandle.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 7C54A4BC1AA11CCA00380F78 /* WKBundleFileHandle.cpp */; };
</span><span class="lines">@@ -516,6 +517,7 @@
</span><span class="cx">                 76E182D91547550100F1FADD /* WillSendSubmitEvent.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = WillSendSubmitEvent.cpp; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="cx">                 76E182DC1547569100F1FADD /* WillSendSubmitEvent_Bundle.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = WillSendSubmitEvent_Bundle.cpp; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="cx">                 76E182DE15475A8300F1FADD /* auto-submitting-form.html */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.html; path = &quot;auto-submitting-form.html&quot;; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><ins>+                7AA021BA1AB09EA70052953F /* DateMath.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = DateMath.cpp; sourceTree = &quot;&lt;group&gt;&quot;; };
</ins><span class="cx">                 7AA6A1511AAC0B31002B2ED3 /* WorkQueue.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = WorkQueue.cpp; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="cx">                 7C486BA01AA1254B003F6F9B /* bundle-file.html */ = {isa = PBXFileReference; lastKnownFileType = text.html; path = &quot;bundle-file.html&quot;; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="cx">                 7C54A4BC1AA11CCA00380F78 /* WKBundleFileHandle.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = WKBundleFileHandle.cpp; sourceTree = &quot;&lt;group&gt;&quot;; };
</span><span class="lines">@@ -1020,6 +1022,7 @@
</span><span class="cx">                                 26F1B44215CA434F00D1E4BF /* AtomicString.cpp */,
</span><span class="cx">                                 A7A966DA140ECCC8005EF9B4 /* CheckedArithmeticOperations.cpp */,
</span><span class="cx">                                 26A2C72E15E2E73C005B1A14 /* CString.cpp */,
</span><ins>+                                7AA021BA1AB09EA70052953F /* DateMath.cpp */,
</ins><span class="cx">                                 E4A757D3178AEA5B00B5D7A4 /* Deque.cpp */,
</span><span class="cx">                                 1AA9E55714980A9900001A8A /* Functional.cpp */,
</span><span class="cx">                                 0BCD833414857CE400EA2003 /* HashMap.cpp */,
</span><span class="lines">@@ -1550,6 +1553,7 @@
</span><span class="cx">                         isa = PBXSourcesBuildPhase;
</span><span class="cx">                         buildActionMask = 2147483647;
</span><span class="cx">                         files = (
</span><ins>+                                7AA021BB1AB09EA70052953F /* DateMath.cpp in Sources */,
</ins><span class="cx">                                 1CB9BC381A67482300FE5678 /* WeakPtr.cpp in Sources */,
</span><span class="cx">                                 2E7765CD16C4D80A00BA2BB1 /* mainIOS.mm in Sources */,
</span><span class="cx">                                 7AA6A1521AAC0B31002B2ED3 /* WorkQueue.cpp in Sources */,
</span></span></pre></div>
<a id="trunkToolsTestWebKitAPITestsWTFDateMathcpp"></a>
<div class="addfile"><h4>Added: trunk/Tools/TestWebKitAPI/Tests/WTF/DateMath.cpp (0 => 181393)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Tools/TestWebKitAPI/Tests/WTF/DateMath.cpp                                (rev 0)
+++ trunk/Tools/TestWebKitAPI/Tests/WTF/DateMath.cpp        2015-03-11 17:49:04 UTC (rev 181393)
</span><span class="lines">@@ -0,0 +1,208 @@
</span><ins>+/*
+ * Copyright (C) 2015 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include &quot;config.h&quot;
+
+#include &quot;Test.h&quot;
+#include &lt;wtf/DateMath.h&gt;
+
+namespace TestWebKitAPI {
+
+// Note: The results of these function look weird if you do not understand the following mappings:
+// dayOfWeek: [0, 6] 0 being Monday, day: [1, 31], month: [0, 11], year: ex: 2011,
+// hours: [0, 23], minutes: [0, 59], seconds: [0, 59], utcOffset: [-720,720].
+
+TEST(WTF_DateMath, dateToDaysFrom1970)
+{
+    EXPECT_EQ(0.0, dateToDaysFrom1970(1970, 0, 1));
+    EXPECT_EQ(157.0, dateToDaysFrom1970(1970, 5, 7));
+    EXPECT_EQ(-145.0, dateToDaysFrom1970(1969, 7, 9));
+    EXPECT_EQ(16322, dateToDaysFrom1970(2014, 8, 9));
+}
+
+
+TEST(WTF_DateMath, isLeapYear)
+{
+    EXPECT_TRUE(isLeapYear(1804));
+    EXPECT_FALSE(isLeapYear(1900));
+    EXPECT_TRUE(isLeapYear(1968));
+    EXPECT_TRUE(isLeapYear(1976));
+    EXPECT_TRUE(isLeapYear(2000));
+    EXPECT_FALSE(isLeapYear(2010));
+    EXPECT_TRUE(isLeapYear(2012));
+    EXPECT_FALSE(isLeapYear(2100));
+}
+
+TEST(WTF_DateMath, msToYear)
+{
+    EXPECT_EQ(1962, msToYear(-220953600000));
+    EXPECT_EQ(1970, msToYear(0));
+    EXPECT_EQ(1970, msToYear(100));
+    EXPECT_EQ(1977, msToYear(220953600000));
+    EXPECT_EQ(2013, msToYear(1365318000000));
+}
+
+TEST(WTF_DateMath, msToDays)
+{
+    EXPECT_EQ(0, msToDays(0));
+    EXPECT_EQ(2557, msToDays(220953600000));
+    EXPECT_EQ(255, msToDays(22095360000));
+    EXPECT_EQ(25, msToDays(2209536000));
+    EXPECT_EQ(2, msToDays(220953600));
+    EXPECT_EQ(0, msToDays(22095360));
+    EXPECT_EQ(0, msToDays(2209536));
+}
+
+TEST(WTF_DateMath, msToMinutes)
+{
+    EXPECT_EQ(0, msToMinutes(0));
+    EXPECT_EQ(0, msToMinutes(220953600000));
+    EXPECT_EQ(36, msToMinutes(22095360000));
+    EXPECT_EQ(36, msToMinutes(22095360000));
+    EXPECT_EQ(45, msToMinutes(2209536000));
+    EXPECT_EQ(22, msToMinutes(220953600));
+    EXPECT_EQ(8, msToMinutes(22095360));
+    EXPECT_EQ(36, msToMinutes(2209536));
+}
+
+TEST(WTF_DateMath, msToHours)
+{
+    EXPECT_EQ(0, msToHours(0));
+    EXPECT_EQ(8, msToHours(220953600000));
+    EXPECT_EQ(17, msToHours(22095360000));
+    EXPECT_EQ(13, msToHours(2209536000));
+    EXPECT_EQ(13, msToHours(220953600));
+    EXPECT_EQ(6, msToHours(22095360));
+    EXPECT_EQ(0, msToHours(2209536));
+}
+
+TEST(WTF_DateMath, dayInYear)
+{
+    EXPECT_EQ(59, dayInYear(2015, 2, 1));
+    EXPECT_EQ(60, dayInYear(2012, 2, 1));
+    EXPECT_EQ(0, dayInYear(2015, 0, 1));
+    EXPECT_EQ(31, dayInYear(2015, 1, 1));
+}
+
+TEST(WTF_DateMath, monthFromDayInYear)
+{
+    EXPECT_EQ(2, monthFromDayInYear(59, false));
+    EXPECT_EQ(1, monthFromDayInYear(59, true));
+    EXPECT_EQ(2, monthFromDayInYear(60, true));
+    EXPECT_EQ(0, monthFromDayInYear(0, false));
+    EXPECT_EQ(0, monthFromDayInYear(0, true));
+    EXPECT_EQ(1, monthFromDayInYear(31, true));
+    EXPECT_EQ(1, monthFromDayInYear(31, false));
+}
+
+TEST(WTF_DateMath, dayInMonthFromDayInYear)
+{
+    EXPECT_EQ(1, dayInMonthFromDayInYear(0, false));
+    EXPECT_EQ(1, dayInMonthFromDayInYear(0, true));
+    EXPECT_EQ(1, dayInMonthFromDayInYear(59, false));
+    EXPECT_EQ(29, dayInMonthFromDayInYear(59, true));
+    EXPECT_EQ(1, dayInMonthFromDayInYear(60, true));
+    EXPECT_EQ(1, dayInMonthFromDayInYear(0, false));
+    EXPECT_EQ(1, dayInMonthFromDayInYear(0, true));
+    EXPECT_EQ(31, dayInMonthFromDayInYear(30, true));
+    EXPECT_EQ(31, dayInMonthFromDayInYear(30, false));
+    EXPECT_EQ(31, dayInMonthFromDayInYear(365, true));
+    EXPECT_EQ(32, dayInMonthFromDayInYear(365, false));
+    EXPECT_EQ(32, dayInMonthFromDayInYear(366, true));
+}
+
+TEST(WTF_DateMath, calculateLocalTimeOffset)
+{
+    // DST Start: April 30, 1967 (02:00 am)
+    LocalTimeOffset dstStart1967 = calculateLocalTimeOffset(-84301200000, WTF::LocalTime);
+    EXPECT_TRUE(dstStart1967.isDST);
+    EXPECT_EQ(-25200000, dstStart1967.offset);
+
+    // November 1, 1967 (02:00 am)
+    LocalTimeOffset dstAlmostEnd1967 = calculateLocalTimeOffset(-68317200000, WTF::LocalTime);
+    EXPECT_TRUE(dstAlmostEnd1967.isDST);
+    EXPECT_EQ(-25200000, dstAlmostEnd1967.offset);
+
+    // DST End: November 11, 1967 (02:00 am)
+    LocalTimeOffset dstEnd1967 = calculateLocalTimeOffset(-67536000000, WTF::LocalTime);
+    EXPECT_FALSE(dstEnd1967.isDST);
+    EXPECT_EQ(-25200000, dstStart1967.offset);
+
+    // DST Start: April 3, 1988 (02:00 am)
+    LocalTimeOffset dstStart1988 = calculateLocalTimeOffset(576054000000, WTF::LocalTime);
+    EXPECT_TRUE(dstStart1988.isDST);
+    EXPECT_EQ(-25200000, dstStart1988.offset);
+
+    // DST End: November 4, 2012 (02:00 am)
+    LocalTimeOffset dstEnd2012 = calculateLocalTimeOffset(1352012400000, WTF::LocalTime);
+    EXPECT_FALSE(dstEnd2012.isDST);
+    EXPECT_EQ(-28800000, dstEnd2012.offset);
+
+    // DST Begin: March 8, 2015
+    LocalTimeOffset dstBegin2015 = calculateLocalTimeOffset(1425801600000, WTF::LocalTime);
+    EXPECT_TRUE(dstBegin2015.isDST);
+    EXPECT_EQ(-25200000, dstBegin2015.offset);
+
+    LocalTimeOffset dstBegin2015UTC = calculateLocalTimeOffset(1425801600000, WTF::UTCTime);
+    EXPECT_FALSE(dstBegin2015UTC.isDST);
+    EXPECT_EQ(-28800000, dstBegin2015UTC.offset);
+
+    // DST End: November 1, 2015
+    LocalTimeOffset dstEnd2015 = calculateLocalTimeOffset(1446361200000, WTF::LocalTime);
+    EXPECT_FALSE(dstEnd2015.isDST);
+    EXPECT_EQ(-28800000, dstEnd2015.offset);
+
+    // DST Begin: March 13, 2016
+    LocalTimeOffset dstBegin2016 = calculateLocalTimeOffset(1458111600000, WTF::LocalTime);
+    EXPECT_TRUE(dstBegin2016.isDST);
+    EXPECT_EQ(-25200000, dstBegin2016.offset);
+
+    // DST End: November 6, 2016
+    LocalTimeOffset dstEnd2016 = calculateLocalTimeOffset(1478415600000, WTF::LocalTime);
+    EXPECT_FALSE(dstEnd2016.isDST);
+    EXPECT_EQ(-28800000, dstEnd2016.offset);
+
+    // DST Begin: March 12, 2017
+    LocalTimeOffset dstBegin2017 = calculateLocalTimeOffset(1489305600000, WTF::LocalTime);
+    EXPECT_TRUE(dstBegin2017.isDST);
+    EXPECT_EQ(-25200000, dstBegin2017.offset);
+
+    // DST End: November 5, 2017
+    LocalTimeOffset dstEnd2017 = calculateLocalTimeOffset(1509865200000, WTF::LocalTime);
+    EXPECT_FALSE(dstEnd2017.isDST);
+    EXPECT_EQ(-28800000, dstEnd2017.offset);
+
+    // DST Begin: March 11, 2018
+    LocalTimeOffset dstBegin2018 = calculateLocalTimeOffset(1520755200000, WTF::LocalTime);
+    EXPECT_TRUE(dstBegin2018.isDST);
+    EXPECT_EQ(-25200000, dstBegin2018.offset);
+
+    // DST End: November 4, 2018
+    LocalTimeOffset dstEnd2018 = calculateLocalTimeOffset(1541314800000, WTF::LocalTime);
+    EXPECT_FALSE(dstEnd2018.isDST);
+    EXPECT_EQ(-28800000, dstEnd2018.offset);
+}
+
+} // namespace TestWebKitAPI
</ins></span></pre>
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