def test_splice_illegal():
# Try to splice onto a descendant of the source node.
strain = Strain(
(
(
(),
),
)
)
assert_raises(
IndexError,
lambda: strain.splice([0], [0, 0])
)
# Try to create a node with too many children.
strain = Strain(
(
(),
(
(),
),
)
)
assert_raises(
ValueError,
lambda: strain.splice([1, 0], [0])
)
def test_splice():
strain = Strain(
(
(
(),
),
))
strain.splice([0, 0], [1])
assert_equal(
strain.as_tuple(),
(
(),
(),
)
)
strain = Strain(
(
(),
(),
)
)
strain.splice([0], [0, 0])
assert_equal(
strain.as_tuple(),
(
(
(),
),
)
)
strain = Strain(
(
(),
(
(),
(),
),
)
)
strain.splice([1], [0, 0])
assert_equal(
strain.as_tuple(),
(
(
(
(),
(),
),
),
)
)
strain = Strain(
(
(
(),
),
(),
)
)
strain.splice([0], [1])
assert_equal(
strain.as_tuple(),
(
(),
(
(),
),
)
)
