see if GetCommandLine() value is interesting

src/allmydata/test/test_windows.py

@@ -49,6 +49,7 @@ from testtools.matchers import (
 
 from hypothesis import (
     given,
+    note,
 )
 
 from hypothesis.strategies import (
@@ -118,7 +119,15 @@ class GetArgvTests(SyncTestCase):
             PIPE,
         )
         argv = [executable.decode("utf-8"), save_argv_path.path] + argv
-        returncode = Popen(argv, stdin=PIPE, stdout=PIPE, stderr=PIPE).wait()
+        p = Popen(argv, stdin=PIPE, stdout=PIPE, stderr=PIPE)
+        p.stdin.close()
+        stdout = p.stdout.read()
+        stderr = p.stderr.read()
+        returncode = p.wait()
+
+        note("stdout: {!r}".format(stdout))
+        note("stderr: {!r}".format(stderr))
+
         self.assertThat(
             returncode,
             Equals(0),

src/allmydata/windows/fixups.py

@@ -26,8 +26,12 @@ def get_argv():
         use_last_error=True
     )(("CommandLineToArgvW", windll.shell32))
 
+    import sys
+
+    command_line = GetCommandLine()
+    print("GetCommandLine() -> {!r}".format(command_line), file=sys.stderr)
     argc = c_int(0)
-    argv_unicode = CommandLineToArgvW(GetCommandLine(), byref(argc))
+    argv_unicode = CommandLineToArgvW(command_line, byref(argc))
     if argv_unicode is None:
         raise WinError(get_last_error())