old_contents: """Various tests of type safety."""
  import unittest
  
  from raco.fakedb import FakeDatabase
  from raco.scheme import Scheme
  from raco.myrial.myrial_test import MyrialTestCase
  from collections import Counter
  
  
  class TypeTests(MyrialTestCase):
      schema = Scheme(
          [("clong", "LONG_TYPE"),
           ("cint", "INT_TYPE"),
           ("cstring", "STRING_TYPE"),
           ("cfloat", "DOUBLE_TYPE")])
  
      def setUp(self):
          super(TypeTests, self).setUp()
          self.db.ingest("public:adhoc:mytable", Counter(), TypeTests.schema)
  
      def noop_test(self):
          query = """
          X = SCAN(public:adhoc:mytable);
          STORE(X, OUTPUT);
          """
  
          self.check_scheme(query, TypeTests.schema)
  
new_contents: """Various tests of type safety."""
  import unittest
  
  from raco.fakedb import FakeDatabase
  from raco.scheme import Scheme
  from raco.myrial.myrial_test import MyrialTestCase
  from raco.expression import TypeSafetyViolation
  from collections import Counter
  
  
  class TypeTests(MyrialTestCase):
      schema = Scheme(
          [("clong", "LONG_TYPE"),
           ("cint", "INT_TYPE"),
           ("cstring", "STRING_TYPE"),
           ("cfloat", "DOUBLE_TYPE")])
  
      def setUp(self):
          super(TypeTests, self).setUp()
          self.db.ingest("public:adhoc:mytable", Counter(), TypeTests.schema)
  
      def noop_test(self):
          query = """
          X = SCAN(public:adhoc:mytable);
          STORE(X, OUTPUT);
          """
  
          self.check_scheme(query, TypeTests.schema)
  
      def invalid_eq(self):
          query = """
          X = [FROM SCAN(public:adhoc:mytable) AS X EMIT clong=cstring];
          STORE(X, OUTPUT);
          """
          with self.assertRaises(TypeSafetyViolation):
              self.check_scheme(query, None)
  
subject: Test of invalid equality test