Improve test coverage

Author: ondras12345

tests/test_ModelicaSystem.py

@@ -377,6 +377,12 @@ def test_simulate_inputs(self):
             "u2=[(0.0, 0), (0.25, 0.5), (0.5, 1.0), (1.0, 0)]",
         ])
         mod.simulate()
+        assert pathlib.Path(mod.csvFile).read_text() == """time,u1,u2,end
+0.0,0.0,0.0,0
+0.25,0.25,0.5,0
+0.5,0.5,1.0,0
+1.0,1.0,0.0,0
+"""
         y = mod.getSolutions("y")[0]
         assert np.isclose(y[-1], 1.0)
 

tests/test_ZMQ.py

@@ -40,6 +40,12 @@ def testSimulate(self):
         self.assertNotEqual("", self.om.sendExpression('res.resultFile'))
         self.clean()
 
+    def test_execute(self):
+        self.assertEqual('"HelloWorld!"\n', self.om.execute('"HelloWorld!"'))
+        self.assertEqual('"HelloWorld!"\n', self.om.sendExpression('"HelloWorld!"', parsed=False))
+        self.assertEqual('HelloWorld!', self.om.sendExpression('"HelloWorld!"', parsed=True))
+        self.clean()
+
 
 if __name__ == '__main__':
     unittest.main()