Nicer (?) code.

tests/transformer/test_async.py

@@ -70,9 +70,7 @@ def test_await(c_exec):
     result = compile_restricted_exec(
         AWAIT_EXAMPLE,
         policy=RestrictingAsyncNodeTransformer)
-    assert result.errors == (
-        'Line 11: Await statements are not allowed.',
-    )
+    assert result.errors == ('Line 11: Await statements are not allowed.',)
     assert result.code is None
 
 
@@ -89,9 +87,7 @@ def test_async_with(c_exec):
     result = compile_restricted_exec(
         ASYNC_WITH_EXAMPLE,
         policy=RestrictingAsyncNodeTransformer)
-    assert result.errors == (
-        'Line 3: AsyncWith statements are not allowed.',
-    )
+    assert result.errors == ('Line 3: AsyncWith statements are not allowed.',)
     assert result.code is None
 
 
@@ -108,7 +104,5 @@ def test_async_for(c_exec):
     result = compile_restricted_exec(
         ASYNC_FOR_EXAMPLE,
         policy=RestrictingAsyncNodeTransformer)
-    assert result.errors == (
-        'Line 3: AsyncFor statements are not allowed.',
-    )
+    assert result.errors == ('Line 3: AsyncFor statements are not allowed.',)
     assert result.code is None

tests/transformer/test_global_local.py

@@ -38,7 +38,5 @@ def inside():
 @pytest.mark.parametrize(*c_exec)
 def test_Nonlocal(c_exec):
     result = c_exec(NONLOCAL_EXAMPLE)
-    assert result.errors == (
-        'Line 5: Nonlocal statements are not allowed.',
-    )
+    assert result.errors == ('Line 5: Nonlocal statements are not allowed.',)
     assert result.code is None

tests/transformer/test_yield.py

@@ -14,12 +14,8 @@ def no_yield():
 def test_yield(c_exec):
     """It prevents using the `yield` statement."""
     result = c_exec(YIELD_EXAMPLE)
+    assert result.errors == ("Line 2: Yield statements are not allowed.",)
     assert result.code is None
-    assert result.errors == (
-        "Line 2: Yield statements are not allowed.",
-    )
-    assert result.warnings == []
-    assert result.used_names == {}
 
 
 # Modified Example from http://stackabuse.com/python-async-await-tutorial/
@@ -38,11 +34,5 @@ def get_json(client, url):
 @pytest.mark.parametrize(*c_exec)
 def test_yield_from(c_exec):
     result = c_exec(YIELD_FORM_EXAMPLE)
+    assert result.errors == ('Line 6: YieldFrom statements are not allowed.',)
     assert result.code is None
-    assert result.errors == (
-        'Line 6: YieldFrom statements are not allowed.',
-    )
-    assert result.warnings == []
-    assert result.used_names == {
-        'asyncio': True,
-    }