def test_check_word_lengths():
"""Ensure that we verify that word lengths add up to the grid tiles."""
# Should not raise an error.
_check_word_lengths(Grid.from_string("aaaa"), [1, 3])
with pytest.raises(SystemExit):
_check_word_lengths(Grid.from_string("aaaa"), [1, 2])
def test_grid_factory_constructor_fails_on_non_perfect_square():
"""Ensure that we don't accept an input string of a non perfect square."""
try:
Grid.from_string("abc")
except ValueError as e:
assert str(e) == \
"Length of input string (3) was not a perfect square: abc"
else:
assert False, "Failed to raise ValueError."
def test_grid_delete_word():
"""Ensure that we delete a word safely; see the note on `Grid.delete_word`.
"""
grid = Grid.from_string("aaabbbccc")
new_grid = grid.delete_word([(1, 0), (0, 0)])
assert new_grid._rows == [["", "a", "a"],
["", "b", "b"],
["c", "c", "c"]]
def test_grid_to_bool(example_grid):
"""Ensure that a grid is converted to bool depending on whether it is
empty.
"""
assert bool(example_grid)
grid = Grid.from_string("a")
del grid[0, 0]
assert not bool(grid)
def test_grid_delete_tile():
"""Ensure that deleting a tile causes it to disappear and the above tiles
to fall down.
"""
input_string = "aaabbbccc"
grid = Grid.from_string(input_string)
del grid[2, 0]
expected_grid = [["", "a", "a"], ["a", "b", "b"], ["b", "c", "c"]]
assert grid._rows == expected_grid
from wordacademysolver.grid import Grid
from wordacademysolver.prefixtree import PrefixTree
from wordacademysolver.solver import _indices_to_word, _words_of_length, Solver
WORD_LIST = {"hello", "got", "python", "pyth", "foo", "bar", "baz"}
"""A sample list of words."""
GRID = Grid.from_string("gpt"
"noy"
"oht")
"""A sample grid."""
def test_indices_to_word():
"""Ensure that we can convert a set of indices through a grid into its
corresponding word.
"""
word = "python"
indices = [(0, 1), (1, 2), (2, 2),
(2, 1), (2, 0), (1, 0)]
assert _indices_to_word(GRID, indices) == word
def test_words_of_length():
"""Ensure that we can find words of a given length."""
tree = PrefixTree(WORD_LIST)
# The result should be "got" in two different ways.
expected = [[(0, 0), (1, 1), (0, 2)],
[(0, 0), (1, 1), (2, 2)]]
def test_grid_factory_constructor_fails_on_empty_grid():
"""Ensure that we don't accept empty grids."""
with pytest.raises(ValueError):
Grid.from_string("")
def test_grid_factory_constructor(example_grid_array, example_grid_string):
"""Ensure that the factory constructor creates the expected grid."""
grid = Grid.from_string(example_grid_string)
assert grid._rows == example_grid_array
