Reverse order of cli test assertions

PyTest generates diffs for the expected vs actual values on the
assumption that the expected value is on the right of the comparison.

tests/test_cli.py

@@ -613,21 +613,21 @@ def test_unknown_object_formatting():
     output = StringIO()
     OutputFormat.JSON.display(demo, output)
     exp = """{"foo": 42, "bar": ["hello", "World"]}\n"""
-    assert exp == output.getvalue()
+    assert output.getvalue() == exp
 
     output = StringIO()
     OutputFormat.COMPACT.display(demo, output)
     exp = """{'bar': ['hello', 'World'], 'foo': 42}\n"""
-    assert exp == output.getvalue()
+    assert output.getvalue() == exp
 
     output = StringIO()
     OutputFormat.FULL.display(demo, output)
-    assert exp == output.getvalue()
+    assert output.getvalue() == exp
 
 
 def test_generic_base_model_formatting():
     output = StringIO()
     obj = ExtendedModel(name="foo", keys=[1, 2, 3], metadata={"fizz": "buzz"})
     exp = '{"name": "foo", "keys": [1, 2, 3], "metadata": {"fizz": "buzz"}}\n'
     OutputFormat.JSON.display(obj, output)
-    assert exp == output.getvalue()
+    assert output.getvalue() == exp