/usr/lib/python3/dist-packages/plainbox/impl/test_symbol.py is in python3-plainbox 0.5.3-2.
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#
# Copyright 2013 Canonical Ltd.
# Written by:
# Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
#
# Checkbox is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3,
# as published by the Free Software Foundation.
#
# Checkbox is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Checkbox. If not, see <http://www.gnu.org/licenses/>.
"""
plainbox.impl.test_symbol
=========================
Test definitions for plainbox.impl.symbol module
"""
import unittest
from plainbox.impl.symbol import SymbolDef, Symbol
class SymbolTests(unittest.TestCase):
"""
Tests for Symbol class
"""
def test_symbol_str(self):
"""
verify that str() produces the symbol name
"""
self.assertEqual(str(Symbol('foo')), 'foo')
def test_symbol_repr(self):
"""
verify that repr() produces the symbol object
"""
self.assertEqual(repr(Symbol('foo')), "Symbol('foo')")
def test_symbol_hash(self):
"""
verify that hash() hashes the symbol name
"""
self.assertEqual(hash(Symbol('foo')), hash('foo'))
def test_symbol_name(self):
"""
verify that Symbol.name returns the symbol name
"""
self.assertEqual(Symbol('foo').name, 'foo')
def test_symbol_uniqueness(self):
"""
verify that two symbols with the same name are indeed a single object
"""
self.assertIs(Symbol('foo'), Symbol('foo'))
def test_different_symbols_are_not_same(self):
"""
verify that two symbols with different names are not the same object
"""
self.assertIsNot(Symbol('foo'), Symbol('bar'))
def test_symbol_symbol_comparison(self):
"""
verify that comparing symbols to symbols works
"""
self.assertEqual(Symbol('foo'), Symbol('foo'))
self.assertNotEqual(Symbol('foo'), Symbol('bar'))
def test_symbol_string_comparison(self):
"""
verify that comparing symbols to strings works
"""
self.assertEqual(Symbol('foo'), 'foo')
self.assertNotEqual(Symbol('foo'), 'bar')
def test_string_symbol_comparison(self):
"""
verify that comparing strings to symbols works
"""
self.assertEqual('foo', Symbol('foo'))
self.assertNotEqual('bar', Symbol('foo'))
def test_symbol_other_comparison(self):
"""
verify that comparing symbols to other types (or vice
versa) is always False
"""
self.assertFalse(
Symbol('foo') == 1,
"Symbol compared equal to integer")
self.assertFalse(
1 == Symbol('foo'),
"integer compared equal to Symbol")
self.assertFalse(
Symbol('foo') != 1,
"Symbol compared unequal to integer")
self.assertFalse(
1 != Symbol('foo'),
"integer compared unequal to Symbol")
class SymbolDefTests(unittest.TestCase):
"""
Tests for SymbolDef class
"""
def test_implicit_symbols(self):
"""
verify that referencing names inside SymbolDef creates symbols
"""
class S(SymbolDef):
a
b
c
self.assertIs(S.a, Symbol('a'))
self.assertIs(S.b, Symbol('b'))
self.assertIs(S.c, Symbol('c'))
def test_custom_symbols(self):
"""
verify that assigning symbols to variables works
"""
class S(SymbolDef):
a = Symbol("the-a-symbol")
self.assertIs(S.a, Symbol('the-a-symbol'))
def test_custom_string_symbols(self):
"""
verify that assigning strings to variables creates symbols
"""
class S(SymbolDef):
a = "the-a-symbol"
self.assertIs(S.a, Symbol('the-a-symbol'))
def test_repeated_symbol(self):
"""
verify that repeating a symbol doesn't break anything
"""
class S(SymbolDef):
a
a
self.assertIs(S.a, Symbol('a'))
self.assertEqual(S.get_all_symbols(), [Symbol('a')])
def test_invalid_assignment(self):
"""
verify that assigning other values is rejected
"""
with self.assertRaises(ValueError) as boom:
class S(SymbolDef):
a = 1
self.assertEqual(
str(boom.exception),
"Only Symbol() instances can be assigned here")
def test_get_all_symbols(self):
"""
verify that get_all_symbols() works as intended
"""
class S(SymbolDef):
a
b
c
self.assertEqual(
S.get_all_symbols(), [Symbol('a'), Symbol('b'), Symbol('c')])
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