def test_set_not_none(self):
testNode = NpNode(None, None)
testValue = 'valueNone'
testKey = 'keyNone'
print('current value = ', testNode.get())
testNode.set(testKey, testValue)
self.assertEquals(testNode.get(), (testKey, testValue))
print('New value = ', testNode.get())
def test_set_none(self):
testNode = NpNode('key', 'value')
testValue = None
testKey = None
print('current value = ', testNode.get())
testNode.set(testKey, testValue)
self.assertEquals(testNode.get(), (testKey, testValue))
print('New value = ', testNode.get())
def test_set(self):
testNode = NpNode('key1', 'test1')
testValue = 'test2'
testKey = 'key2'
print('current value = ', testNode.get())
testNode.set(testKey, testValue)
self.assertEquals(testNode.get(), (testKey, testValue))
print('New value = ', testNode.get())
def put(self, key, value):
if not self.dict: #check if the dictionary is empty
nodeToAdd = NpNode(key, value)
self.head = nodeToAdd
self.tail = nodeToAdd
elif key in self.dict:
#change the value of the node and move it to head.
nodeToChange = self.dict[key]
self.moveNodeToHead(nodeToChange)
self.head.set(key, value)
else:
if (len(self.dict) == self.maxsize):
keyToRemove = self.tail.get_key()
self.tail = self.tail.prev
self.tail.next = None
del self.dict[keyToRemove]
nodeToAdd = NpNode(key, value)
self.head.prev = nodeToAdd
nodeToAdd.next = self.head
self.head = nodeToAdd
self.dict[key] = self.head
return
def test_get(self):
testNode = NpNode('key1','test1')
self.assertIsNotNone(testNode.get(), msg='Node should have a data value already set')
self.assertEquals(testNode.get(), ('key1', 'test1'))
def test_hasValueTrue(self):
testNode = NpNode('key1', 'test1')
self.assertTrue(testNode.has_value('test1'))
def test_hasValueFalse(self):
testNode = NpNode('key1', 'test1')
self.assertFalse(testNode.has_value('test2'))