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#!/usr/bin/env python
from __future__ import division
import unittest
import schedcat.mapping.binpack as bp
import schedcat.mapping.rollback as rb
class TooLarge(unittest.TestCase):
def setUp(self):
self.cap = 10
self.items = range(100, 1000)
self.bins = 9
self.empty = [[]] * self.bins
def test_next_fit(self):
sets = bp.next_fit(self.items, self.bins, self.cap)
self.assertEqual(sets, self.empty)
def test_first_fit(self):
sets = bp.first_fit(self.items, self.bins, self.cap)
self.assertEqual(sets, self.empty)
def test_worst_fit(self):
sets = bp.worst_fit(self.items, self.bins, self.cap)
self.assertEqual(sets, self.empty)
def test_best_fit(self):
sets = bp.best_fit(self.items, self.bins, self.cap)
self.assertEqual(sets, self.empty)
def test_next_fit_decreasing(self):
sets = bp.next_fit_decreasing(self.items, self.bins, self.cap)
self.assertEqual(sets, self.empty)
def test_first_fit_decreasing(self):
sets = bp.first_fit_decreasing(self.items, self.bins, self.cap)
self.assertEqual(sets, self.empty)
def test_worst_fit_decreasing(self):
sets = bp.worst_fit_decreasing(self.items, self.bins, self.cap)
self.assertEqual(sets, self.empty)
def test_best_fit_decreasing(self):
sets = bp.best_fit_decreasing(self.items, self.bins, self.cap)
self.assertEqual(sets, self.empty)
class NotLossy(unittest.TestCase):
def setUp(self):
self.items = range(100, 1000)
self.bins = 1
self.cap = sum(self.items)
self.expected = [self.items]
def test_next_fit(self):
sets = bp.next_fit(self.items, self.bins, self.cap)
sets[0].sort()
self.assertEqual(sets, self.expected)
def test_first_fit(self):
sets = bp.first_fit(self.items, self.bins, self.cap)
sets[0].sort()
self.assertEqual(sets, self.expected)
def test_worst_fit(self):
sets = bp.worst_fit(self.items, self.bins, self.cap)
sets[0].sort()
self.assertEqual(sets, self.expected)
def test_best_fit(self):
sets = bp.best_fit(self.items, self.bins, self.cap)
sets[0].sort()
self.assertEqual(sets, self.expected)
def test_next_fit_decreasing(self):
sets = bp.next_fit_decreasing(self.items, self.bins, self.cap)
sets[0].sort()
self.assertEqual(sets, self.expected)
def test_first_fit_decreasing(self):
sets = bp.first_fit_decreasing(self.items, self.bins, self.cap)
sets[0].sort()
self.assertEqual(sets, self.expected)
def test_worst_fit_decreasing(self):
sets = bp.worst_fit_decreasing(self.items, self.bins, self.cap)
sets[0].sort()
self.assertEqual(sets, self.expected)
def test_best_fit_decreasing(self):
sets = bp.best_fit_decreasing(self.items, self.bins, self.cap)
sets[0].sort()
self.assertEqual(sets, self.expected)
class KnownExample(unittest.TestCase):
def setUp(self):
self.items = [8, 5, 7, 6, 2, 4, 1]
self.bins = 5
self.cap = 10
def test_next_fit(self):
sets = bp.next_fit(self.items, self.bins, self.cap)
self.expected = [[8], [5], [7], [6, 2], [4, 1]]
self.assertEqual(sets, self.expected)
def test_first_fit(self):
sets = bp.first_fit(self.items, self.bins, self.cap)
self.expected = [[8, 2], [5, 4, 1], [7], [6], []]
self.assertEqual(sets, self.expected)
def test_worst_fit(self):
self.bins = 4
sets = bp.worst_fit(self.items, self.bins, self.cap)
self.expected = [[8], [5, 2, 1], [7], [6, 4]]
self.assertEqual(sets, self.expected)
def test_best_fit(self):
sets = bp.best_fit(self.items, self.bins, self.cap)
self.expected = [[8, 2], [5], [7, 1], [6, 4], []]
self.assertEqual(sets, self.expected)
class RollbackBins(unittest.TestCase):
def setUp(self):
self.bin = rb.Bin([0.2])
self.bin2 = rb.Bin([2], size=lambda x: x + 0.1, capacity=10)
def test_try_to_add_float(self):
self.assertTrue(self.bin.try_to_add(0.3))
self.assertFalse(self.bin.try_to_add(0.6))
self.assertTrue(self.bin.try_to_add(0.5))
self.assertFalse(self.bin.try_to_add(0.0000001))
self.assertEqual([0.2,0.3,0.5], self.bin.items)
def test_try_to_add_int(self):
self.assertTrue(self.bin2.try_to_add(3))
self.assertFalse(self.bin2.try_to_add(6))
self.assertFalse(self.bin2.try_to_add(5))
self.assertTrue(self.bin2.try_to_add(1))
self.assertEqual([2,3,1], self.bin2.items)
class Heuristics(unittest.TestCase):
def setUp(self):
self.items = [8, 5, 7, 6, 2, 4, 1]
self.bins = [rb.Bin(capacity = 10) for _ in range(5)]
self.bins = [rb.CheckedBin(b) for b in self.bins]
self.make_bin = lambda x: rb.CheckedBin(rb.Bin(capacity = x))
def test_base(self):
h = rb.Heuristic(self.bins)
self.assertEqual(0, h.binpack(self.items))
self.assertEqual(h.misfits, self.items)
h.misfits = []
self.assertRaises(bp.DidNotFit, h.binpack, self.items,
report_misfit=bp.report_failure)
self.assertEqual([8], h.misfits)
def test_next_fit_fixed(self):
h = rb.NextFit(self.bins)
self.assertEqual(len(self.items), h.binpack(self.items))
expected = [[8], [5], [7], [6, 2], [4, 1]]
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
def test_next_fit_make(self):
h = rb.NextFit(make_bin=lambda: self.make_bin(10))
self.assertEqual(len(self.items), h.binpack(self.items))
expected = [[8], [5], [7], [6, 2], [4, 1]]
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
def test_next_fit_small(self):
h = rb.NextFit(make_bin=lambda: self.make_bin(7))
expected = [[5], [7], [6], [2, 4, 1]]
misfits = [8]
self.assertEqual(len(self.items) - len(misfits),
h.binpack(self.items))
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
self.assertEqual(misfits, h.misfits)
def test_next_fit_few(self):
h = rb.NextFit(self.bins[:4])
expected = [[8], [5], [7], [6, 2]]
misfits = [4, 1]
self.assertEqual(len(self.items) - len(misfits),
h.binpack(self.items))
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
self.assertEqual(misfits, h.misfits)
def test_first_fit_fixed(self):
h = rb.FirstFit(self.bins)
self.assertEqual(len(self.items), h.binpack(self.items))
expected = [[8, 2], [5, 4, 1], [7], [6], []]
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
def test_first_fit_make(self):
h = rb.FirstFit(make_bin=lambda: self.make_bin(10))
self.assertEqual(len(self.items), h.binpack(self.items))
expected = [[8, 2], [5, 4, 1], [7], [6]]
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
def test_first_fit_small(self):
h = rb.FirstFit(make_bin=lambda: self.make_bin(7))
expected = [[5,2], [7], [6, 1], [4]]
misfits = [8]
self.assertEqual(len(self.items) - len(misfits),
h.binpack(self.items))
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
self.assertEqual(misfits, h.misfits)
def test_first_fit_few(self):
h = rb.FirstFit(self.bins[:3])
expected = [[8, 2], [5, 4, 1], [7]]
misfits = [6]
self.assertEqual(len(self.items) - len(misfits),
h.binpack(self.items))
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
self.assertEqual(misfits, h.misfits)
def test_worst_fit_fixed(self):
h = rb.WorstFit(self.bins)
self.assertEqual(len(self.items), h.binpack(self.items))
expected = [[8], [5, 1], [7], [6], [2, 4]]
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
def test_worst_fit_make(self):
h = rb.WorstFit(make_bin=lambda: self.make_bin(10))
self.assertEqual(len(self.items), h.binpack(self.items))
expected = [[8], [5, 2, 1], [7], [6, 4]]
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
def test_worst_fit_small(self):
h = rb.WorstFit(make_bin=lambda: self.make_bin(7))
expected = [[5, 2], [7], [6], [4, 1]]
misfits = [8]
self.assertEqual(len(self.items) - len(misfits),
h.binpack(self.items))
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
self.assertEqual(misfits, h.misfits)
def test_worst_fit_few(self):
h = rb.WorstFit(self.bins[:4])
expected = [[8], [5, 2, 1], [7], [6, 4]]
misfits = []
self.assertEqual(len(self.items) - len(misfits),
h.binpack(self.items))
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
self.assertEqual(misfits, h.misfits)
def test_best_fit_fixed(self):
h = rb.BestFit(self.bins)
self.assertEqual(len(self.items), h.binpack(self.items))
expected = [[8, 2], [5], [7, 1], [6, 4], []]
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
def test_best_fit_make(self):
h = rb.BestFit(make_bin=lambda: self.make_bin(10))
self.assertEqual(len(self.items), h.binpack(self.items))
expected = [[8, 2], [5], [7, 1], [6, 4]]
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
def test_best_fit_small(self):
h = rb.BestFit(make_bin=lambda: self.make_bin(7))
expected = [[5, 2], [7], [6, 1], [4]]
misfits = [8]
self.assertEqual(len(self.items) - len(misfits),
h.binpack(self.items))
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
self.assertEqual(misfits, h.misfits)
def test_best_fit_few(self):
h = rb.BestFit(self.bins[:3])
expected = [[8, 2], [5, 4, 1], [7]]
misfits = [6]
self.assertEqual(len(self.items) - len(misfits),
h.binpack(self.items))
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
self.assertEqual(misfits, h.misfits)
def test_max_spare_cap_fixed(self):
h = rb.MaxSpareCapacity(self.bins)
self.assertEqual(len(self.items), h.binpack(self.items))
expected = [[8], [5, 1], [7], [6], [2, 4]]
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
def test_max_spare_cap_make(self):
h = rb.MaxSpareCapacity(make_bin=lambda: self.make_bin(10))
self.assertEqual(len(self.items), h.binpack(self.items))
expected = [[8], [5, 2, 1], [7], [6, 4]]
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
def test_max_spare_cap_small(self):
h = rb.MaxSpareCapacity(make_bin=lambda: self.make_bin(7))
expected = [[5, 2], [7], [6], [4, 1]]
misfits = [8]
self.assertEqual(len(self.items) - len(misfits),
h.binpack(self.items))
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
self.assertEqual(misfits, h.misfits)
def test_max_spare_cap_few(self):
h = rb.MaxSpareCapacity(self.bins[:4])
expected = [[8], [5, 2, 1], [7], [6, 4]]
misfits = []
self.assertEqual(len(self.items) - len(misfits),
h.binpack(self.items))
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
self.assertEqual(misfits, h.misfits)
def test_min_spare_cap_fixed(self):
h = rb.MinSpareCapacity(self.bins)
self.assertEqual(len(self.items), h.binpack(self.items))
expected = [[8, 2], [5], [7, 1], [6, 4], []]
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
def test_min_spare_cap_make(self):
h = rb.MinSpareCapacity(make_bin=lambda: self.make_bin(10))
self.assertEqual(len(self.items), h.binpack(self.items))
expected = [[8, 2], [5], [7, 1], [6, 4]]
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
def test_min_spare_cap_small(self):
h = rb.MinSpareCapacity(make_bin=lambda: self.make_bin(7))
expected = [[5, 2], [7], [6, 1], [4]]
misfits = [8]
self.assertEqual(len(self.items) - len(misfits),
h.binpack(self.items))
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
self.assertEqual(misfits, h.misfits)
def test_min_spare_cap_few(self):
h = rb.MinSpareCapacity(self.bins[:3])
expected = [[8, 2], [5, 4, 1], [7]]
misfits = [6]
self.assertEqual(len(self.items) - len(misfits),
h.binpack(self.items))
did_part = [bin.items for bin in h.bins]
self.assertEqual(expected, did_part)
self.assertEqual(misfits, h.misfits)
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