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# those tests only work after transation with the new _structseq changes, since
# _structseq is frozen in
import pytest
import sys
from _structseq import structseqtype, structseqfield
class foo(metaclass=structseqtype):
f1 = structseqfield(0, "a")
f2 = structseqfield(1, "b")
f3 = structseqfield(2, "c")
f5 = structseqfield(4, "nonconsecutive")
f6 = structseqfield(5, "nonconsecutive2", default=lambda self: -15)
def test_structseqtype():
t = foo((1, 2, 3))
assert isinstance(t, tuple)
assert t.f1 == 1
assert t.f2 == 2
assert t.f3 == 3
assert t.f5 is None
t = foo((1, 2, 3, 4))
assert t.f1 == 1
assert t.f2 == 2
assert t.f3 == 3
assert t.f5 == 4
assert t.f6 == -15
assert tuple(t) == (1, 2, 3) # only positional
t = foo((1, 2, 3), dict(f5=4))
assert t.f1 == 1
assert t.f2 == 2
assert t.f3 == 3
assert t.f5 == 4
assert t.f6 == -15
assert tuple(t) == (1, 2, 3) # only positional
t = foo((1, 2, 3, 4, 5))
assert t.f1 == 1
assert t.f2 == 2
assert t.f3 == 3
assert t.f5 == 4
assert t.f6 == 5
assert tuple(t) == (1, 2, 3)
t = foo((1, 2, 3), dict(f5=4, f6=12))
assert t.f1 == 1
assert t.f2 == 2
assert t.f3 == 3
assert t.f5 == 4
assert t.f6 == 12
assert tuple(t) == (1, 2, 3)
t = foo((1, 2, 3, 4), dict(f6=12))
assert t.f1 == 1
assert t.f2 == 2
assert t.f3 == 3
assert t.f5 == 4
assert t.f6 == 12
assert tuple(t) == (1, 2, 3)
with pytest.raises(TypeError):
foo((1, ))
with pytest.raises(TypeError):
foo((1, ) * 6)
with pytest.raises(TypeError):
foo((1, 2, 3, 4), dict(f5=5))
def test_dict_extra_keys_ignored():
t = foo((1, 2, 3), dict(a=2))
assert not hasattr(t, 'a') # follow CPython
def test_dict_mapdict():
import __pypy__
t = foo((1, 2, 3, 4), dict(f6=12))
assert __pypy__.strategy(t.__dict__) == 'MapDictStrategy'
def test_dict_structseqfield_immutable():
import __pypy__
assert __pypy__.strategy(foo.f5).count("immutable") == 5
def test_default_only_nonpositional():
with pytest.raises(AssertionError):
class foo(metaclass=structseqtype):
f1 = structseqfield(0, "a", default=lambda self: 0)
def test_trace_get():
l = []
def trace(frame, event, *args):
l.append((frame, event, ) + args)
return trace
t = foo((1, 2, 3))
sys.settrace(trace)
assert t.f1 == 1
sys.settrace(None)
assert l == []
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