def test_dict_access_and_mod(self):
"""
Test num dict access and modification
"""
# dicts for testing
dict_0 = {} # Empty dictionary
dict_1 = {1: "Elephant"} # Single numeric key
dict_2 = {1: "Elephant", 2: "Mouse"} # Multiple numeric keys
# Construct NumDicts from dicts
num_dict_0 = NumDict()
num_dict_1 = NumDict(dict_1)
num_dict_2 = NumDict(dict_2)
# test __getitem__
assert num_dict_2[1] == "Elephant"
with pytest.raises(KeyError):
_ = num_dict_1["Mouse"] # key is not numeric
with pytest.raises(KeyError):
_ = num_dict_1.__getitem__("Mouse") # key is not numeric
with pytest.raises(KeyError):
_ = num_dict_1[None] # key does not exist
with pytest.raises(KeyError):
_ = num_dict_1.__getitem__(None) # key does not exist
# Test __setitem__
num_dict_3 = NumDict(num_dict_2)
assert num_dict_2 == num_dict_3
num_dict_3[2] = "Frog"
assert num_dict_2 != num_dict_3
# Check None keys and numeric key conversion
num_dict_3["3"] = "Armadillo"
num_dict_3[None] = "Cockroach"
# Check long ints
num_dict_3[12390809518259081208909880312] = "Squid"
num_dict_3["12390809518259081208909880312"] = "Octopus"
assert num_dict_3[12390809518259081208909880312] == "Octopus"
with pytest.raises(TypeError):
num_dict_3.__setitem__("Gorilla", 1) # key is not numeric
with pytest.raises(TypeError):
num_dict_3["Chimpanzee"] = 1 # key is not numeric
with pytest.raises(TypeError):
num_dict_3[(4, 1)] = 1 # key is not numeric
with pytest.raises(TypeError):
num_dict_3[[1, 3, 4]] = 1 # key is not numeric and is not hashable
# Test __delitem__
del num_dict_3[3]
del num_dict_3[None]
with pytest.raises(KeyError):
del num_dict_3[3] # already deleted
with pytest.raises(KeyError):
num_dict_3.__delitem__(3) # already deleted
with pytest.raises(KeyError):
del num_dict_3[
"Mouse"] # key would not exist, since it is not numeric
# Test clear
num_dict_3.clear()
assert num_dict_3 == {}
# Test copy()
num_dict_2a = dict_2.copy()
assert num_dict_2 == num_dict_2a
num_dict_2b = num_dict_2.copy()
assert num_dict_2b == num_dict_2
num_dict_2c = UserDict({1: "Elephant", 2: "Mouse"})
num_dict_2d = num_dict_2c.copy(
) # making a copy of a UserDict is special cased
assert num_dict_2c == num_dict_2d
class MyNumDict(NumDict):
"""
subclass Numdict for testing
"""
def display(self):
"""
add a method to subclass to differentiate from superclass
"""
print("MyNumDict:", self)
my_num_dict = MyNumDict(num_dict_2)
my_num_dict_a = my_num_dict.copy()
assert my_num_dict_a == my_num_dict
my_num_dict[1] = "Frog"
assert my_num_dict_a != my_num_dict
# Test keys, items, values
assert sorted(num_dict_2) == sorted(dict_2)
assert sorted(num_dict_2.items()) == sorted(dict_2.items())
assert sorted(num_dict_2.values()) == sorted(dict_2.values())
# Test "in".
for i in num_dict_2:
assert i in num_dict_2
assert (i in num_dict_1) == (i in dict_1)
assert (i in num_dict_0) == (i in dict_0)
assert None not in num_dict_2
assert (None in num_dict_2) is (None in dict_2)
dict_2[None] = "Cow"
num_dict_2[None] = dict_2[None]
assert None in num_dict_2
assert (None in num_dict_2) is (None in dict_2)
assert "Penguin" not in num_dict_2
# Test update
test = NumDict()
test.update(dict_2)
assert test == num_dict_2
# Test get
for i in num_dict_2:
assert num_dict_2.get(i) == num_dict_2[i]
assert num_dict_1.get(i) == dict_1.get(i)
assert num_dict_0.get(i) == dict_0.get(i)
for i in ["purple", None, 12312301924091284, 23]:
assert num_dict_2.get(i) == dict_2.get(i), i
with pytest.raises(AssertionError):
assert num_dict_2.get("1") == dict_2.get(
"1"), 1 # dict_2 expects string key which does not exist
# Test "in" iteration.
num_dict_2b = num_dict_2
for i in range(20):
num_dict_2[i] = str(i)
num_dict_2b[str(i)] = str(i)
assert num_dict_2 == num_dict_2b
ikeys = []
for k in num_dict_2:
ikeys.append(k)
assert set(ikeys) == set(num_dict_2)
# Test setdefault
val = 1
test = NumDict()
assert test.setdefault(val, 42) == 42
assert test.setdefault(val, "42") == 42
assert test.setdefault(val, 42) != "42"
assert test.setdefault(val, "42") != "42"
assert val in test
assert test.setdefault(val, 23) == 42
assert test.setdefault(val, "23") == 42
assert test.setdefault(val, 23) != "42"
assert test.setdefault(val, "23") != "42"
assert val in test
# Test pop
val = 1
test = NumDict({val: 42})
assert test.pop(val) == 42
pytest.raises(KeyError, test.pop, val)
assert test.pop(val, 1) == 1
test[val] = 42
assert test.pop(val, 1) == 42
# Test popitem
val = 1
test = NumDict({val: 42})
assert test.popitem() == (val, 42)
pytest.raises(KeyError, test.popitem)
def test_dict_access_and_mod(self):
"""
Test num dict access and modification
"""
# dicts for testing
dict_0 = {} # Empty dictionary
dict_1 = {1: 'Elephant'} # Single numeric key
dict_2 = {1: 'Elephant', 2: 'Mouse'} # Multiple numeric keys
# Construct NumDicts from dicts
num_dict_0 = NumDict()
num_dict_1 = NumDict(dict_1)
num_dict_2 = NumDict(dict_2)
# test __getitem__
self.assertEqual(num_dict_2[1], 'Elephant')
with self.assertRaises(KeyError):
_ = num_dict_1['Mouse'] # key is not numeric
with self.assertRaises(KeyError):
_ = num_dict_1.__getitem__('Mouse') # key is not numeric
with self.assertRaises(KeyError):
_ = num_dict_1[None] # key does not exist
with self.assertRaises(KeyError):
_ = num_dict_1.__getitem__(None) # key does not exist
# Test __setitem__
num_dict_3 = NumDict(num_dict_2)
self.assertEqual(num_dict_2, num_dict_3)
num_dict_3[2] = 'Frog'
self.assertNotEqual(num_dict_2, num_dict_3)
# Check None keys and numeric key conversion
num_dict_3['3'] = 'Armadillo'
num_dict_3[None] = 'Cockroach'
# Check long ints
num_dict_3[12390809518259081208909880312] = 'Squid'
num_dict_3['12390809518259081208909880312'] = 'Octopus'
self.assertEqual(num_dict_3[12390809518259081208909880312], 'Octopus')
with self.assertRaises(TypeError):
num_dict_3.__setitem__('Gorilla', 1) # key is not numeric
with self.assertRaises(TypeError):
num_dict_3['Chimpanzee'] = 1 # key is not numeric
with self.assertRaises(TypeError):
num_dict_3[(4, 1)] = 1 # key is not numeric
with self.assertRaises(TypeError):
num_dict_3[[1, 3, 4]] = 1 # key is not numeric and is not hashable
# Test __delitem__
del num_dict_3[3]
del num_dict_3[None]
with self.assertRaises(KeyError):
del num_dict_3[3] # already deleted
with self.assertRaises(KeyError):
num_dict_3.__delitem__(3) # already deleted
with self.assertRaises(KeyError):
del num_dict_3[
'Mouse'] # key would not exist, since it is not numeric
# Test clear
num_dict_3.clear()
self.assertEqual(num_dict_3, {})
# Test copy()
num_dict_2a = dict_2.copy()
self.assertEqual(num_dict_2, num_dict_2a)
num_dict_2b = num_dict_2.copy()
self.assertEqual(num_dict_2b, num_dict_2)
num_dict_2c = UserDict({1: 'Elephant', 2: 'Mouse'})
num_dict_2d = num_dict_2c.copy(
) # making a copy of a UserDict is special cased
self.assertEqual(num_dict_2c, num_dict_2d)
class MyNumDict(NumDict):
"""
subclass Numdict for testing
"""
def display(self):
"""
add a method to subclass to differentiate from superclass
"""
print('MyNumDict:', self)
my_num_dict = MyNumDict(num_dict_2)
my_num_dict_a = my_num_dict.copy()
self.assertEqual(my_num_dict_a, my_num_dict)
my_num_dict[1] = 'Frog'
self.assertNotEqual(my_num_dict_a, my_num_dict)
# Test keys, items, values
self.assertEqual(sorted(num_dict_2), sorted(dict_2))
self.assertEqual(sorted(num_dict_2.items()), sorted(dict_2.items()))
self.assertEqual(sorted(num_dict_2.values()), sorted(dict_2.values()))
# Test "in".
for i in num_dict_2:
self.assertIn(i, num_dict_2)
self.assertEqual(i in num_dict_1, i in dict_1)
self.assertEqual(i in num_dict_0, i in dict_0)
self.assertFalse(None in num_dict_2)
self.assertEqual(None in num_dict_2, None in dict_2)
dict_2[None] = 'Cow'
num_dict_2[None] = dict_2[None]
self.assertTrue(None in num_dict_2)
self.assertEqual(None in num_dict_2, None in dict_2)
self.assertFalse('Penguin' in num_dict_2)
# Test update
test = NumDict()
test.update(dict_2)
self.assertEqual(test, num_dict_2)
# Test get
for i in num_dict_2:
self.assertEqual(num_dict_2.get(i), num_dict_2[i])
self.assertEqual(num_dict_1.get(i), dict_1.get(i))
self.assertEqual(num_dict_0.get(i), dict_0.get(i))
for i in ['purple', None, 12312301924091284, 23]:
self.assertEqual(num_dict_2.get(i), dict_2.get(i), i)
with self.assertRaises(AssertionError):
i = '1'
self.assertEqual(
num_dict_2.get(i), dict_2.get(i),
i) # dict_2 expects string key which does not exist
# Test "in" iteration.
num_dict_2b = num_dict_2
for i in range(20):
num_dict_2[i] = str(i)
num_dict_2b[str(i)] = str(i)
self.assertEqual(num_dict_2, num_dict_2b)
ikeys = []
for k in num_dict_2:
ikeys.append(k)
self.assertEqual(set(ikeys), set(num_dict_2))
# Test setdefault
val = 1
test = NumDict()
self.assertEqual(test.setdefault(val, 42), 42)
self.assertEqual(test.setdefault(val, '42'), 42)
self.assertNotEqual(test.setdefault(val, 42), '42')
self.assertNotEqual(test.setdefault(val, '42'), '42')
self.assertIn(val, test)
self.assertEqual(test.setdefault(val, 23), 42)
self.assertEqual(test.setdefault(val, '23'), 42)
self.assertNotEqual(test.setdefault(val, 23), '42')
self.assertNotEqual(test.setdefault(val, '23'), '42')
self.assertIn(val, test)
# Test pop
val = 1
test = NumDict({val: 42})
self.assertEqual(test.pop(val), 42)
self.assertRaises(KeyError, test.pop, val)
self.assertEqual(test.pop(val, 1), 1)
test[val] = 42
self.assertEqual(test.pop(val, 1), 42)
# Test popitem
val = 1
test = NumDict({val: 42})
self.assertEqual(test.popitem(), (val, 42))
self.assertRaises(KeyError, test.popitem)