def test_invalid_name(self):
interp = Interpreter()
with self.assertRaises(Exception) as context:
interp.eval('set 3 5')
self.assertTrue('Invalid variable name "3"' in str(context.exception))
def test_get_undefined_variable(self):
"""
Test that get None for an undefined variable.
"""
interp = Interpreter()
self.assertEqual(interp.get('x'), None)
def test_missing_command(self):
interp = Interpreter()
with self.assertRaises(Exception) as context:
interp.eval('qwerty')
self.assertTrue(
"Command \"qwerty\" not found." in str(context.exception))
def test_normal(self):
interp = Interpreter()
with self.assertRaises(CommandError) as context:
interp.eval('error "Hello world."')
self.assertTrue('Hello world.' in str(context.exception))
def test_string_starting_with_number_set(self):
""" Not keen on this aspect of Tcl """
interp = Interpreter()
interp.eval('set x 123.4234excel')
self.assertEqual(interp.get('x'), '123.4234excel')
def test_simple_set_read_not_exist(self):
interp = Interpreter()
with self.assertRaises(VariableDoesNotExistError) as context:
interp.eval('set x')
self.assertTrue(
'set: Variable "x" does not exist.' in str(context.exception))
def test_invalid_arguments(self):
interp = Interpreter()
with self.assertRaises(IncorrectNumberOfArgumentsError) as context:
interp.eval('error "Hello world." 34 45 56')
print(str(context.exception))
self.assertTrue('error: Expected 1 or 2 or 3 arguments but received 4.'
in str(context.exception))
def test_malformed_script_2(self):
interp = Interpreter()
with self.assertRaises(Exception) as context:
interp.eval('set x "cat"se')
self.assertTrue(
"Expecting space but got 'se'" in str(context.exception))
def test_simple_set_script_incorrect_args_excess(self):
interp = Interpreter()
with self.assertRaises(IncorrectNumberOfArgumentsError) as context:
interp.eval('set x 5 4')
self.assertTrue("set: Expected 1 or 2 arguments but received 3" in str(
context.exception))
def test_set_and_get_variable(self):
"""
Test that we can set and get a variable.
"""
interp = Interpreter()
interp.set('x', 5)
self.assertEqual(interp.get('x'), 5)
def test_cannot_set_variable_to_class(self):
interp = Interpreter()
with self.assertRaises(Exception) as context:
interp.set('x', interp)
self.assertTrue(
"Cannot set a variable to type <class 'pytcl.interp.Interpreter'>"
in str(context.exception))
def test_simple_set_read(self):
interp = Interpreter()
interp.eval('set x "5"')
result = interp.eval('set x')
self.assertEqual(result.value, '5')
self.assertEqual(interp.get('x'), '5')
def test_simple_set_script_integer(self):
interp = Interpreter()
interp.eval('set x 5')
self.assertEqual(interp.get('x'), 5)
def test_float_set(self):
interp = Interpreter()
interp.eval('set x 12.34')
self.assertEqual(interp.get('x'), 12.34)
def test_float_with_exponent_set(self):
interp = Interpreter()
interp.eval('set x 12.34e-14')
self.assertEqual(interp.get('x'), 1.234e-13)
def test_string_set_single_quote(self):
interp = Interpreter()
interp.eval('set x \'This is a string\'')
self.assertEqual(interp.get('x'), 'This is a string')
def test_malformed_script_3(self):
interp = Interpreter()
with self.assertRaises(Exception) as context:
interp.eval('2')
self.assertTrue('invalid command name "2"' in str(context.exception))
def test_simple_set_script_string_single_quote(self):
interp = Interpreter()
interp.eval('set x \'5\'')
self.assertEqual(interp.get('x'), '5')
def test_string_set(self):
interp = Interpreter()
interp.eval('set x "This is a string"')
self.assertEqual(interp.get('x'), 'This is a string')
def test_simple_set_script_string(self):
interp = Interpreter()
interp.eval('set x "5"')
self.assertEqual(interp.get('x'), '5')
def test_simple_set_string_script_2(self):
interp = Interpreter()
interp.set('x', "The quick brown fox")
self.assertEqual(interp.get('x'), 'The quick brown fox')
def test_malformed_script_1(self):
interp = Interpreter()
with self.assertRaises(Exception) as context:
interp.eval('set x ]')
self.assertTrue("Unexpected character ']'" in str(context.exception))