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test_sitegen.py
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test_sitegen.py
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from expr import (prob, v, do)
from sitegen import (gen_v_sites, gen_do_sites)
def test_gen_v_sites():
root_expr = prob([v('z')], [v('w'), do(v('x')), do(v('y'))])
sites = list(gen_v_sites(root_expr))
assert len(sites) == 1
target, inject, left, vs, dos, _ = sites[0]
atom, = target
assert atom == v('w')
assert inject('banana') == prob([v('z')], ['banana', do(v('x')), do(v('y'))])
assert left == (v('z'), )
assert vs == []
assert dos == [do(v('x')), do(v('y'))]
def test_gen_do_sites():
root_expr = prob([v('z')], [v('w'), do(v('x')), do(v('y'))])
sites = list(gen_do_sites(root_expr))
assert len(sites) == 2
target, inject, left, vs, dos, _ = sites[0]
atom, = target
assert atom == do(v('x'))
assert inject('banana') == prob([v('z')], [v('w'), 'banana', do(v('y'))])
assert left == (v('z'), )
assert vs == [v('w')]
assert dos == [do(v('y'))]
target, inject, left, vs, dos, _ = sites[1]
atom, = target
assert atom == do(v('y'))
assert inject('banana') == prob([v('z')], [v('w'), do(v('x')), 'banana'])
assert left == (v('z'), )
assert vs == [v('w')]
assert dos == [do(v('x'))]