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Add tests to CSP class #299

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Merged
norvig merged 2 commits into from
Mar 5, 2017
Merged

Add tests to CSP class #299

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544cd5c
Add tests to CSP class
lucasmoura Mar 2, 2017
0aed370
Refactor some asserts in test_csp.py
lucasmoura Mar 3, 2017
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64 changes: 55 additions & 9 deletions tests/test_csp.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,16 +2,62 @@
from csp import * #noqa


def test_csp_assign():
var = 10
val = 5
assignment = {}
australia.assign(var, val, assignment)

assert australia.nassigns == 1
assert assignment[var] == val


def test_csp_unassign():
var = 10
assignment = {var: 5}
australia.unassign(var, assignment)

assert var not in assignment


def test_csp_nconflits():
map_coloring_test = MapColoringCSP(list('RGB'), 'A: B C; B: C; C: ')
assignment = {'A': 'R', 'B': 'G'}
var = 'C'
val = 'R'
assert map_coloring_test.nconflicts(var, val, assignment) == 1

val = 'B'
assert map_coloring_test.nconflicts(var, val, assignment) == 0


def test_csp_actions():
map_coloring_test = MapColoringCSP(list('123'), 'A: B C; B: C; C: ')

state = {'A': '1', 'B': '2', 'C': '3'}
assert map_coloring_test.actions(state) == []

state = {'A': '1', 'B': '3'}
assert map_coloring_test.actions(state) == [('C', '2')]

state = {'A': '1', 'C': '2'}
assert map_coloring_test.actions(state) == [('B', '3')]

state = {'A': '1'}
assert (map_coloring_test.actions(state) == [('C', '2'), ('C', '3')] or
map_coloring_test.actions(state) == [('B', '2'), ('B', '3')])


def test_backtracking_search():
assert (backtracking_search(australia) is not None) == True
assert (backtracking_search(australia, select_unassigned_variable=mrv) is not None) == True
assert (backtracking_search(australia, order_domain_values=lcv) is not None) == True
assert (backtracking_search(australia, select_unassigned_variable=mrv,
order_domain_values=lcv) is not None) == True
assert (backtracking_search(australia, inference=forward_checking) is not None) == True
assert (backtracking_search(australia, inference=mac) is not None) == True
assert (backtracking_search(usa, select_unassigned_variable=mrv,
order_domain_values=lcv, inference=mac) is not None) == True
assert backtracking_search(australia)
assert backtracking_search(australia, select_unassigned_variable=mrv)
assert backtracking_search(australia, order_domain_values=lcv)
assert backtracking_search(australia, select_unassigned_variable=mrv,
order_domain_values=lcv)
assert backtracking_search(australia, inference=forward_checking)
assert backtracking_search(australia, inference=mac)
assert backtracking_search(usa, select_unassigned_variable=mrv,
order_domain_values=lcv, inference=mac)


def test_universal_dict():
Expand Down