Make all test262 tests pass on Windows (#3157)

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

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