def test_empty_cache_reset(self):
"""
Test the reset function when cache capacity is 0
"""
print('test_empty_cache_reset')
cache = Cache(size=0, verbose=self.verbose)
with self.assertRaises(Exception) as context:
cache.reset()
self.assertTrue('Cache is not defined' in str(context.exception))
def test_cache_reset(self):
"""
Test the functionality of reseting the cache
"""
print('test_cache_reset')
cache = Cache(size=3, verbose=self.verbose)
cache.put(1, 3)
cache.put(2, 2)
cache.put(3, 1)
cache.reset()
self.assertEqual(0, len(cache.cacheLRU))
def test_cache_4(self):
"""
Test the functionality of deleting a key
"""
print('test_cache_4')
cache = Cache(size=3, verbose=self.verbose)
cache.put(1, 3)
cache.put(2, 2)
cache.put(3, 1)
cache.delKey(1)
self.assertEqual(3, next(reversed(cache.cacheLRU)))
def test_cache_update_val(self):
"""
Test the put function when value is updated for a key
"""
print('test_cache_update_val')
cache = Cache(size=3, verbose=self.verbose)
cache.put(1, 3)
cache.put(2, 2)
cache.put(3, 1)
cache.put(1, 5)
self.assertEqual(5, cache.get(1))
def test_cache_3(self):
"""
Test the functionality of having the last item in
ordered dictionary as the most recent one
"""
print('test_cache_3')
cache = Cache(size=3, verbose=self.verbose)
cache.put(1, 3)
cache.put(2, 2)
cache.put(3, 1)
val = cache.get(3)
self.assertEqual(3, next(reversed(cache.cacheLRU)))
def test_cache_get(self):
"""
Test the functionality of get function
"""
print('test_cache_get')
cache = Cache(size=3, verbose=self.verbose)
cache.put(1, 4)
cache.put(2, 3)
cache.put(3, 3)
cache.put(4, 1)
val = cache.get(2)
self.assertEqual(3, val)
self.assertEqual(2, next(reversed(cache.cacheLRU)))
def test_cache_5(self):
"""
Test the functionality of put when entries greater than size are added
"""
print('test_cache_5')
cache = Cache(size=3, verbose=self.verbose)
cache.put(1, 4)
cache.put(2, 3)
cache.put(3, 2)
cache.put(4, 1)
self.assertEqual(4, next(reversed(cache.cacheLRU)))
from cacheLRU import Cache
if __name__ == '__main__':
#to define the cache
cache = Cache(size=3,verbose=True)
#to enter key/value to the cache
cache.put('a',1)
cache.put('b',2)
cache.put('c',3)
cache.put('d',4)
#to get value of a particular key in the cache
val = cache.get('b')
#to delete a particular key
cache.delKey('c')
#to dump the cache for visual inspection
cache.dumpCache()
#to reset the cache
cache.reset()