mirror of
https://github.com/Mikaela/Limnoria.git
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382 lines
13 KiB
Python
382 lines
13 KiB
Python
#!/usr/bin/env python
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###
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# Copyright (c) 2002, Jeremiah Fincher
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions, and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions, and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of the author of this software nor the name of
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# contributors to this software may be used to endorse or promote products
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# derived from this software without specific prior written consent.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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###
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from test import *
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import pickle
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from structures import *
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class RingBufferTestCase(unittest.TestCase):
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def testInit(self):
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self.assertRaises(ValueError, RingBuffer, -1)
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self.assertRaises(ValueError, RingBuffer, 0)
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self.assertEqual(range(10), list(RingBuffer(10, range(10))))
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def testLen(self):
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b = RingBuffer(3)
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self.assertEqual(0, len(b))
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b.append(1)
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self.assertEqual(1, len(b))
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b.append(2)
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self.assertEqual(2, len(b))
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b.append(3)
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self.assertEqual(3, len(b))
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b.append(4)
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self.assertEqual(3, len(b))
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b.append(5)
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self.assertEqual(3, len(b))
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def testNonzero(self):
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b = RingBuffer(3)
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self.failIf(b)
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b.append(1)
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self.failUnless(b)
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def testAppend(self):
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b = RingBuffer(3)
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self.assertEqual([], list(b))
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b.append(1)
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self.assertEqual([1], list(b))
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b.append(2)
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self.assertEqual([1, 2], list(b))
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b.append(3)
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self.assertEqual([1, 2, 3], list(b))
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b.append(4)
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self.assertEqual([2, 3, 4], list(b))
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b.append(5)
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self.assertEqual([3, 4, 5], list(b))
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b.append(6)
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self.assertEqual([4, 5, 6], list(b))
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def testContains(self):
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b = RingBuffer(3, range(3))
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self.failUnless(0 in b)
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self.failUnless(1 in b)
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self.failUnless(2 in b)
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self.failIf(3 in b)
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def testGetitem(self):
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L = range(10)
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b = RingBuffer(len(L), L)
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for i in range(len(b)):
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self.assertEqual(L[i], b[i])
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for i in range(len(b)):
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self.assertEqual(L[-i], b[-i])
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for i in range(len(b)):
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b.append(i)
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for i in range(len(b)):
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self.assertEqual(L[i], b[i])
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for i in range(len(b)):
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self.assertEqual(list(b), list(b[:i]) + list(b[i:]))
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def testSliceGetitem(self):
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L = range(10)
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b = RingBuffer(len(L), L)
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for i in range(len(b)):
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self.assertEqual(L[:i], b[:i])
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self.assertEqual(L[i:], b[i:])
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self.assertEqual(L[i:len(b)-i], b[i:len(b)-i])
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self.assertEqual(L[:-i], b[:-i])
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self.assertEqual(L[-i:], b[-i:])
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self.assertEqual(L[i:-i], b[i:-i])
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for i in range(len(b)):
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b.append(i)
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for i in range(len(b)):
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self.assertEqual(L[:i], b[:i])
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self.assertEqual(L[i:], b[i:])
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self.assertEqual(L[i:len(b)-i], b[i:len(b)-i])
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self.assertEqual(L[:-i], b[:-i])
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self.assertEqual(L[-i:], b[-i:])
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self.assertEqual(L[i:-i], b[i:-i])
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def testSetitem(self):
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L = range(10)
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b = RingBuffer(len(L), [0]*len(L))
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for i in range(len(b)):
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b[i] = i
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for i in range(len(b)):
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self.assertEqual(b[i], i)
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for i in range(len(b)):
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b.append(0)
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for i in range(len(b)):
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b[i] = i
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for i in range(len(b)):
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self.assertEqual(b[i], i)
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def testSliceSetitem(self):
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L = range(10)
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b = RingBuffer(len(L), [0]*len(L))
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self.assertRaises(ValueError, b.__setitem__, slice(0, 10), [])
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b[2:4] = L[2:4]
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self.assertEquals(b[2:4], L[2:4])
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for i in range(len(b)):
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b.append(0)
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b[2:4] = L[2:4]
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self.assertEquals(b[2:4], L[2:4])
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def testExtend(self):
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b = RingBuffer(3, range(3))
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self.assertEqual(list(b), range(3))
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b.extend(range(6))
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self.assertEqual(list(b), range(6)[3:])
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def testRepr(self):
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b = RingBuffer(3)
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self.assertEqual(repr(b), 'RingBuffer(3, [])')
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b.append(1)
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self.assertEqual(repr(b), 'RingBuffer(3, [1])')
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b.append(2)
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self.assertEqual(repr(b), 'RingBuffer(3, [1, 2])')
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b.append(3)
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self.assertEqual(repr(b), 'RingBuffer(3, [1, 2, 3])')
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b.append(4)
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self.assertEqual(repr(b), 'RingBuffer(3, [2, 3, 4])')
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b.append(5)
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self.assertEqual(repr(b), 'RingBuffer(3, [3, 4, 5])')
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b.append(6)
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self.assertEqual(repr(b), 'RingBuffer(3, [4, 5, 6])')
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def testPickleCopy(self):
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b = RingBuffer(10, range(10))
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self.assertEqual(pickle.loads(pickle.dumps(b)), b)
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def testEq(self):
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b = RingBuffer(3, range(3))
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self.failIf(b == range(3))
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b1 = RingBuffer(3)
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self.failIf(b == b1)
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b1.append(0)
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self.failIf(b == b1)
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b1.append(1)
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self.failIf(b == b1)
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b1.append(2)
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self.failUnless(b == b1)
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b = RingBuffer(100, range(10))
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b1 = RingBuffer(10, range(10))
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self.failIf(b == b1)
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def testIter(self):
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b = RingBuffer(3, range(3))
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L = []
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for elt in b:
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L.append(elt)
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self.assertEqual(L, range(3))
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for elt in range(3):
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b.append(elt)
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del L[:]
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for elt in b:
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L.append(elt)
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self.assertEqual(L, range(3))
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class QueueTest(unittest.TestCase):
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def testGetitem(self):
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q = queue()
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n = 10
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self.assertRaises(IndexError, q.__getitem__, 0)
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for i in xrange(n):
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q.enqueue(i)
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for i in xrange(n):
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self.assertEqual(q[i], i)
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for i in xrange(n, 0, -1):
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self.assertEqual(q[-i], n-i)
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for i in xrange(len(q)):
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self.assertEqual(list(q), list(q[:i]) + list(q[i:]))
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self.assertRaises(IndexError, q.__getitem__, -(n+1))
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self.assertRaises(IndexError, q.__getitem__, n)
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self.assertEqual(q[3:7], queue([3, 4, 5, 6]))
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def testSetitem(self):
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q1 = queue()
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self.assertRaises(IndexError, q1.__setitem__, 0, 0)
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for i in xrange(10):
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q1.enqueue(i)
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q2 = eval(repr(q1))
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for (i, elt) in enumerate(q2):
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q2[i] = elt*2
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self.assertEqual([x*2 for x in q1], list(q2))
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def testNonzero(self):
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q = queue()
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self.failIf(q, 'queue not zero after initialization')
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q.enqueue(1)
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self.failUnless(q, 'queue zero after adding element')
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q.dequeue()
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self.failIf(q, 'queue not zero after dequeue of only element')
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def testLen(self):
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q = queue()
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self.assertEqual(0, len(q), 'queue len not 0 after initialization')
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q.enqueue(1)
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self.assertEqual(1, len(q), 'queue len not 1 after enqueue')
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q.enqueue(2)
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self.assertEqual(2, len(q), 'queue len not 2 after enqueue')
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q.dequeue()
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self.assertEqual(1, len(q), 'queue len not 1 after dequeue')
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q.dequeue()
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self.assertEqual(0, len(q), 'queue len not 0 after dequeue')
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for i in range(10):
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L = range(i)
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q = queue(L)
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self.assertEqual(len(q), i)
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def testEq(self):
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q1 = queue()
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q2 = queue()
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self.failUnless(q1 == q1, 'queue not equal to itself')
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self.failUnless(q2 == q2, 'queue not equal to itself')
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self.failUnless(q1 == q2, 'initialized queues not equal')
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q1.enqueue(1)
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self.failUnless(q1 == q1, 'queue not equal to itself')
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self.failUnless(q2 == q2, 'queue not equal to itself')
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q2.enqueue(1)
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self.failUnless(q1 == q1, 'queue not equal to itself')
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self.failUnless(q2 == q2, 'queue not equal to itself')
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self.failUnless(q1 == q2, 'queues not equal after identical enqueue')
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q1.dequeue()
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self.failUnless(q1 == q1, 'queue not equal to itself')
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self.failUnless(q2 == q2, 'queue not equal to itself')
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self.failIf(q1 == q2, 'queues equal after one dequeue')
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q2.dequeue()
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self.failUnless(q1 == q2, 'queues not equal after both are dequeued')
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self.failUnless(q1 == q1, 'queue not equal to itself')
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self.failUnless(q2 == q2, 'queue not equal to itself')
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def testInit(self):
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self.assertEqual(len(queue()), 0, 'queue len not 0 after init')
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q = queue()
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q.enqueue(1)
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q.enqueue(2)
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q.enqueue(3)
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self.assertEqual(queue((1, 2, 3)),q, 'init not equivalent to enqueues')
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q = queue((1, 2, 3))
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self.assertEqual(q.dequeue(), 1, 'values not returned in proper order')
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self.assertEqual(q.dequeue(), 2, 'values not returned in proper order')
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self.assertEqual(q.dequeue(), 3, 'values not returned in proper order')
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def testRepr(self):
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q = queue()
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q.enqueue(1)
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self.assertEqual(q, eval(repr(q)), 'repr doesn\'t eval to same queue')
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q.enqueue('foo')
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self.assertEqual(q, eval(repr(q)), 'repr doesn\'t eval to same queue')
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q.enqueue(None)
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self.assertEqual(q, eval(repr(q)), 'repr doesn\'t eval to same queue')
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q.enqueue(1.0)
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self.assertEqual(q, eval(repr(q)), 'repr doesn\'t eval to same queue')
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q.enqueue([])
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self.assertEqual(q, eval(repr(q)), 'repr doesn\'t eval to same queue')
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q.enqueue(())
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self.assertEqual(q, eval(repr(q)), 'repr doesn\'t eval to same queue')
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q.enqueue([1])
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self.assertEqual(q, eval(repr(q)), 'repr doesn\'t eval to same queue')
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q.enqueue((1,))
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self.assertEqual(q, eval(repr(q)), 'repr doesn\'t eval to same queue')
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def testEnqueueDequeue(self):
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q = queue()
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self.assertRaises(IndexError, q.dequeue)
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q.enqueue(1)
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self.assertEqual(q.dequeue(), 1,
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'first dequeue didn\'t return same as first enqueue')
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q.enqueue(1)
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q.enqueue(2)
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q.enqueue(3)
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self.assertEqual(q.dequeue(), 1)
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self.assertEqual(q.dequeue(), 2)
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self.assertEqual(q.dequeue(), 3)
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def testPeek(self):
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q = queue()
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self.assertRaises(IndexError, q.peek)
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q.enqueue(1)
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self.assertEqual(q.peek(), 1, 'peek didn\'t return first enqueue')
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q.enqueue(2)
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self.assertEqual(q.peek(), 1, 'peek didn\'t return first enqueue')
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q.dequeue()
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self.assertEqual(q.peek(), 2, 'peek didn\'t return second enqueue')
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q.dequeue()
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self.assertRaises(IndexError, q.peek)
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def testContains(self):
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q = queue()
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self.failIf(1 in q, 'empty queue cannot have elements')
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q.enqueue(1)
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self.failUnless(1 in q, 'recent enqueued element not in q')
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q.enqueue(2)
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self.failUnless(1 in q, 'original enqueued element not in q')
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self.failUnless(2 in q, 'second enqueued element not in q')
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q.dequeue()
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self.failIf(1 in q, 'dequeued element in q')
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self.failUnless(2 in q, 'not dequeued element not in q')
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q.dequeue()
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self.failIf(2 in q, 'dequeued element in q')
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def testIter(self):
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q1 = queue((1, 2, 3))
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q2 = queue()
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for i in q1:
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q2.enqueue(i)
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self.assertEqual(q1, q2, 'iterate didn\'t return all elements')
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for _ in queue():
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self.fail('no elements should be in empty queue')
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def testPickleCopy(self):
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q = queue(range(10))
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self.assertEqual(q, pickle.loads(pickle.dumps(q)))
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class MaxLengthQueueTestCase(unittest.TestCase):
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def testInit(self):
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q = MaxLengthQueue(3, (1, 2, 3))
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self.assertEqual(list(q), [1, 2, 3])
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self.assertRaises(TypeError, MaxLengthQueue, 3, 1, 2, 3)
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def testMaxLength(self):
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q = MaxLengthQueue(3)
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q.enqueue(1)
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self.assertEqual(len(q), 1)
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q.enqueue(2)
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self.assertEqual(len(q), 2)
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q.enqueue(3)
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self.assertEqual(len(q), 3)
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q.enqueue(4)
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self.assertEqual(len(q), 3)
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self.assertEqual(q.peek(), 2)
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q.enqueue(5)
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self.assertEqual(len(q), 3)
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self.assertEqual(q[0], 3)
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# vim:set shiftwidth=4 tabstop=8 expandtab textwidth=78:
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