From 2b3faf683d5f78e696ad97999b761b53f3fed0ae Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Csaba=20Osztrogon=C3=A1c?= <oszi@inf.u-szeged.hu>
Date: Thu, 26 Sep 2019 14:31:22 +0200
Subject: [PATCH] Make all test262 tests pass on Windows (#3157)
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Changes:
- Implemented jerry_port_get_local_time_zone_adjustment on Windows
- Implemented jerry_port_get_current_time on Windows
- Run test262 tests on Windows in PST/PDT timezone

JerryScript-DCO-1.0-Signed-off-by: Csaba Osztrogonác oszi@inf.u-szeged.hu
---
 jerry-port/default/default-date.c       | 44 +++++++++++++++++++++++++
 tools/runners/run-test-suite-test262.py | 25 ++++++++++++--
 2 files changed, 67 insertions(+), 2 deletions(-)

diff --git a/jerry-port/default/default-date.c b/jerry-port/default/default-date.c
index 702134371..f988cc8c9 100644
--- a/jerry-port/default/default-date.c
+++ b/jerry-port/default/default-date.c
@@ -16,6 +16,14 @@
 #ifdef HAVE_TM_GMTOFF
 #include <time.h>
 #endif /* HAVE_TM_GMTOFF */
+
+#ifdef _WINDOWS
+#include <windows.h>
+#include <winbase.h>
+#include <winnt.h>
+#include <time.h>
+#endif /* _WINDOWS */
+
 #ifdef __GNUC__
 #include <sys/time.h>
 #endif /* __GNUC__ */
@@ -23,6 +31,17 @@
 #include "jerryscript-port.h"
 #include "jerryscript-port-default.h"
 
+#ifdef _WINDOWS
+/* https://support.microsoft.com/en-us/help/167296/how-to-convert-a-unix-time-t-to-a-win32-filetime-or-systemtime */
+void UnixTimeToFileTime (LONGLONG t, LPFILETIME pft)
+{
+  LONGLONG ll = t * 10000000 + 116444736000000000;
+  pft->dwLowDateTime = (DWORD) ll;
+  pft->dwHighDateTime = ll >> 32;
+} /* UnixTimeToFileTime */
+#endif /* _WINDOWS */
+
+
 /**
  * Default implementation of jerry_port_get_local_time_zone_adjustment. Uses the 'tm_gmtoff' field
  * of 'struct tm' (a GNU extension) filled by 'localtime_r' if available on the
@@ -47,6 +66,25 @@ double jerry_port_get_local_time_zone_adjustment (double unix_ms,  /**< ms since
 #else /* !HAVE_TM_GMTOFF */
   (void) unix_ms;
   (void) is_utc;
+#ifdef _WINDOWS
+  FILETIME fileTime, localFileTime;
+  SYSTEMTIME systemTime, localSystemTime;
+  ULARGE_INTEGER time, localTime;
+
+  _tzset ();
+  UnixTimeToFileTime ((LONGLONG) (unix_ms / 1000), &fileTime);
+
+  if (FileTimeToSystemTime (&fileTime, &systemTime)
+      && SystemTimeToTzSpecificLocalTime (0, &systemTime, &localSystemTime)
+      && SystemTimeToFileTime (&localSystemTime, &localFileTime))
+  {
+    time.LowPart = fileTime.dwLowDateTime;
+    time.HighPart = fileTime.dwHighDateTime;
+    localTime.LowPart = localFileTime.dwLowDateTime;
+    localTime.HighPart = localFileTime.dwHighDateTime;
+    return ((LONGLONG) localTime.QuadPart - (LONGLONG) time.QuadPart) / 10000;
+  }
+#endif /* _WINDOWS */
   return 0.0;
 #endif /* HAVE_TM_GMTOFF */
 } /* jerry_port_get_local_time_zone_adjustment */
@@ -70,5 +108,11 @@ double jerry_port_get_current_time (void)
   }
 #endif /* __GNUC__ */
 
+#ifdef _WINDOWS
+  time_t ltime;
+  time (&ltime);
+  return ltime * 1000;
+#endif /* _WINDOWS */
+
   return 0.0;
 } /* jerry_port_get_current_time */
diff --git a/tools/runners/run-test-suite-test262.py b/tools/runners/run-test-suite-test262.py
index 6884ef680..059562df2 100755
--- a/tools/runners/run-test-suite-test262.py
+++ b/tools/runners/run-test-suite-test262.py
@@ -15,10 +15,12 @@
 # limitations under the License.
 
 from __future__ import print_function
-import sys
 import os
-import subprocess
 import shutil
+import signal
+import subprocess
+import sys
+
 
 def get_platform_cmd_prefix():
     if sys.platform == 'win32':
@@ -26,6 +28,16 @@ def get_platform_cmd_prefix():
     return ['python2']  # The official test262.py isn't python3 compatible, but has python shebang.
 
 
+def set_timezone(timezone):
+    assert sys.platform == 'win32', "set_timezone is Windows only function"
+    subprocess.call(get_platform_cmd_prefix() + ['tzutil', '/s', timezone])
+
+
+def set_timezone_and_exit(timezone):
+    set_timezone(timezone)
+    sys.exit(1)
+
+
 def run_test262_tests(runtime, engine, path_to_test262):
     if not os.path.isdir(os.path.join(path_to_test262, '.git')):
         return_code = subprocess.call(['git', 'clone', 'https://github.com/tc39/test262.git',
@@ -42,6 +54,11 @@ def run_test262_tests(runtime, engine, path_to_test262):
     if os.path.isdir(path_to_remove):
         shutil.rmtree(path_to_remove)
 
+    if sys.platform == 'win32':
+        original_timezone = subprocess.check_output(get_platform_cmd_prefix() + ['tzutil', '/g'])
+        set_timezone('Pacific Standard Time')
+        signal.signal(signal.SIGINT, lambda signal, frame: set_timezone_and_exit(original_timezone))
+
     proc = subprocess.Popen(get_platform_cmd_prefix() +
                             [os.path.join(path_to_test262, 'tools/packaging/test262.py'),
                              '--command', (runtime + ' ' + engine).strip(),
@@ -73,6 +90,10 @@ def run_test262_tests(runtime, engine, path_to_test262):
                     return_code = 1
 
     proc.wait()
+
+    if sys.platform == 'win32':
+        set_timezone(original_timezone)
+
     return return_code