#106: tests: aircox_streamer (#110)

- Writes tests for aircox streamer application;
- Add test utilities in aircox

Co-authored-by: bkfox <thomas bkfox net>
Reviewed-on: rc/aircox#110

aircox_streamer/tests/fake_modules/subprocess.py

@@ -0,0 +1,39 @@
+"""Spoof psutil module in order to run and check tests Resulting values of
+method calls are set inside `fixtures` module."""
+
+STDOUT = 1
+STDERR = 2
+STDIN = 3
+
+
+class FakeProcess:
+    args = None
+    kwargs = None
+    """Kwargs passed to Popen."""
+    killed = False
+    """kill() have been called."""
+    waited = False
+    """wait() have been called."""
+    polled = False
+    """poll() have been called."""
+    poll_result = None
+    """Result of poll() method."""
+
+    def __init__(self, args=[], kwargs={}):
+        self.pid = -13
+        self.args = args
+        self.kwargs = kwargs
+
+    def kill(self):
+        self.killed = True
+
+    def wait(self):
+        self.waited = True
+
+    def poll(self):
+        self.polled = True
+        return self.poll_result
+
+
+def Popen(args, **kwargs):
+    return FakeProcess(args, kwargs)