def testGet(self):
'''Tests simple set/get.'''
m = Map()
# What goes in is what comes out.
m.set('key1', 'value1')
self.assertEquals(m.get(('key1',)), 'value1')
# Atoms work as keys.
self.assertEquals(m.get('key2'), None)
# Values are write-once
self.assertRaises(MapError, m.set, 'key1', 'value1b')
def testGetPrefix(self):
'''Tests set/get_prefix.'''
m = Map()
# Tuple key
m.set(('key1a', 'key1b'), 'value1ab')
self.assertEquals(m.get(('key1a', 'key1b')), 'value1ab')
# Retrieve by prefix
self.assertEquals(m.get_prefix('key1a'), {'key1b': 'value1ab'})
# get_prefix only retrieves at the given level
m.set(('key1a', 'key1b', 'key1c'), 'value1abc')
self.assertEquals(m.get_prefix('key1a'), {'key1b': 'value1ab'})
def testInheritancePrefix(self):
'''Tests that inheritance works with prefixes'''
parent_map = Map()
parent_map.set(('key1a', 'key1b'), 'value1ab')
child_map = Map(parent_map)
self.assertEquals(parent_map.get(('key1a', 'key1b')), 'value1ab')
self.assertEquals(child_map.get(('key1a', 'key1b')), 'value1ab')
self.assertEquals(parent_map.get_prefix(('key1a',)), {'key1b': 'value1ab'})
self.assertEquals(child_map.get_prefix(('key1a',)), {'key1b': 'value1ab'})
# Override in the child
child_map.set(('key1a', 'key1b'), 'value1abchild')
self.assertEquals(parent_map.get(('key1a', 'key1b')), 'value1ab')
self.assertEquals(child_map.get(('key1a', 'key1b')), 'value1abchild')
self.assertEquals(parent_map.get_prefix(('key1a',)), {'key1b': 'value1ab'})
self.assertEquals(child_map.get_prefix(('key1a',)), {'key1b': 'value1abchild'})
def testInheritance(self):
'''Tests that inheritance from a parent map works'''
parent_map = Map()
parent_map.set('key1', 'value1')
self.assertEquals(parent_map.get('key1'), 'value1')
child_map = Map(parent_map)
# Check that the child map inherits values from the parent map
self.assertEquals(child_map.get('key1'), 'value1')
# Now override the value
child_map.set('key1', 'value1child')
self.assertEquals(parent_map.get('key1'), 'value1')
self.assertEquals(child_map.get('key1'), 'value1child')
# Likewise with a shared parent
other_child = Map(parent_map)
other_child.set('key1', 'value1other')
self.assertEquals(parent_map.get('key1'), 'value1')
self.assertEquals(child_map.get('key1'), 'value1child')
self.assertEquals(other_child.get('key1'), 'value1other')