def METHOD_NAME(self):
    try:
        mms.evaluate('div(h*u)', 'cos(x*t)*e_i', scalars=['R'], h='k*x*x')
    except SyntaxError as e:
        self.assertIn("name 'R'", str(e))
    try:
        mms.evaluate('div(h*u)', 'cos(x*t)*e_i', scalars=['x'], h='k*x*x')
    except SyntaxError as e:
        self.assertIn("name 'x'", str(e))
    try:
        mms.evaluate('div(h*u)', 'cos(x*t)*e_i', scalars=['t'], h='k*x*x')
    except SyntaxError as e:
        self.assertIn("name 't'", str(e))
    try:
        mms.evaluate('div(h*u)', 'cos(x*t)*e_i', scalars=['e_k'], h='k*x*x')
    except SyntaxError as e:
        self.assertIn("name 'e_k'", str(e))