tests: Validate **kwargs for TestProcess.wait_for.

tests/integration/quteprocess.py

@@ -127,6 +127,9 @@ class QuteProc(testprocess.Process):
 
     got_error = pyqtSignal()
 
+    KEYS = ['timestamp', 'loglevel', 'category', 'module', 'function', 'line',
+            'message']
+
     def __init__(self, httpbin, parent=None):
         super().__init__(parent)
         self._httpbin = httpbin

tests/integration/testprocess.py

@@ -79,6 +79,7 @@ class Process(QObject):
 
     ready = pyqtSignal()
     new_data = pyqtSignal(object)
+    KEYS = ['data']
 
     def __init__(self, parent=None):
         super().__init__(parent)
@@ -234,6 +235,9 @@ class Process(QObject):
                 timeout = 15000
             else:
                 timeout = 5000
+        for key in kwargs:
+            assert key in self.KEYS
+
         # Search existing messages
         for line in self._data:
             matches = []

tests/integration/webserver.py

@@ -67,6 +67,8 @@ class HTTPBin(testprocess.Process):
         \ (?P<size>[^ ]*)
     """, re.VERBOSE)
 
+    KEYS = ['verb', 'path']
+
     def __init__(self, parent=None):
         super().__init__(parent)
         self.port = self._get_port()