Update test_database.py

Author: kingbuzzman

tests/test_database.py

@@ -550,9 +550,9 @@ def test_simple():
     )
 
     result = django_pytester.runpytest_subprocess("-vv", "-s", "--reuse-db", "-n", "auto")
-    assert "Creating test database for alias 'default'" in result.stdout.str()
+    assert "Creating test database for alias 'default'" in result.stderr.str()
     result.assert_outcomes(passed=1)
 
     result = django_pytester.runpytest_subprocess("-vv", "-s", "--reuse-db", "-n", "auto")
-    assert "Got an error creating the test database: database" in result.stdout.str()
+    assert "Got an error creating the test database: database" in result.stderr.str()
     result.assert_outcomes(passed=1)