Implements More Tests for the DiceInterface Class

tests/mocks/mock_proc.py

@@ -0,0 +1,31 @@
+from typing import List
+import itertools
+
+
+class MockProc:
+    pid_counter = itertools.count()
+
+    def __init__(self, *args, **kwargs):
+        self.pid = next(MockProc.pid_counter)
+
+        if 'exitcode' in kwargs:
+            self.exitcode = kwargs['exitcode']
+        else:
+            self.exitcode = 0
+
+        self.sentinel = self.pid
+
+    def __call__(self, *args, **kwargs):
+        return self
+
+    def start(self):
+        pass
+
+    def terminate(self):
+        pass
+
+
+class MockConnection:
+    @staticmethod
+    def wait(sentinels: List[int]):
+        return sentinels