Added third_party python libraries that are needed for browser testing.

pylib/mozrunner/wpk.py

Index: pylib/mozrunner/wpk.py
===================================================================
--- pylib/mozrunner/wpk.py	(revision 0)
+++ pylib/mozrunner/wpk.py	(revision 0)
@@ -0,0 +1,81 @@
+from ctypes import sizeof, windll, addressof, c_wchar, create_unicode_buffer
+from ctypes.wintypes import DWORD, HANDLE
+
+PROCESS_TERMINATE = 0x0001
+PROCESS_QUERY_INFORMATION = 0x0400
+PROCESS_VM_READ = 0x0010
+
+def get_pids(process_name):
+    BIG_ARRAY = DWORD * 4096
+    processes = BIG_ARRAY()
+    needed = DWORD()
+
+    pids = []
+    result = windll.psapi.EnumProcesses(processes,
+                                        sizeof(processes),
+                                        addressof(needed))
+    if not result:
+        return pids
+
+    num_results = needed.value / sizeof(DWORD)
+
+    for i in range(num_results):
+        pid = processes[i]
+        process = windll.kernel32.OpenProcess(PROCESS_QUERY_INFORMATION |
+                                              PROCESS_VM_READ,
+                                              0, pid)
+        if process:
+            module = HANDLE()
+            result = windll.psapi.EnumProcessModules(process,
+                                                     addressof(module),
+                                                     sizeof(module),
+                                                     addressof(needed))
+            if result:
+                name = create_unicode_buffer(1024)
+                result = windll.psapi.GetModuleBaseNameW(process, module,
+                                                         name, len(name))
+                # TODO: This might not be the best way to
+                # match a process name; maybe use a regexp instead.
+                if name.value.startswith(process_name):
+                    pids.append(pid)
+                windll.kernel32.CloseHandle(module)
+            windll.kernel32.CloseHandle(process)
+
+    return pids
+
+def kill_pid(pid):
+    process = windll.kernel32.OpenProcess(PROCESS_TERMINATE, 0, pid)
+    if process:
+        windll.kernel32.TerminateProcess(process, 0)
+        windll.kernel32.CloseHandle(process)
+
+def kill_process_by_name(name):
+    pids = get_pids(name)
+    for pid in pids:
+        kill_pid(pid)
+
+if __name__ == '__main__':
+    import subprocess
+    import time
+
+    # This test just opens a new notepad instance and kills it.
+
+    name = 'notepad'
+
+    old_pids = set(get_pids(name))
+    subprocess.Popen([name])
+    time.sleep(0.25)
+    new_pids = set(get_pids(name)).difference(old_pids)
+
+    if len(new_pids) != 1:
+        raise Exception('%s was not opened or get_pids() is '
+                        'malfunctioning' % name)
+
+    kill_pid(tuple(new_pids)[0])
+
+    newest_pids = set(get_pids(name)).difference(old_pids)
+
+    if len(newest_pids) != 0:
+        raise Exception('kill_pid() is malfunctioning')
+
+    print "Test passed."