hy/tests/test_models.py

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# Copyright 2018 the authors.
# This file is part of Hy, which is free software licensed under the Expat
# license. See the LICENSE.
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import copy
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import hy
from clint.textui.colored import clean
from hy._compat import long_type, str_type
from hy.models import (wrap_value, replace_hy_obj, HyString, HyInteger, HyList,
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HyDict, HySet, HyExpression, HyCons, HyComplex, HyFloat,
pretty)
def test_wrap_long_type():
""" Test conversion of integers."""
wrapped = wrap_value(long_type(0))
assert type(wrapped) == HyInteger
def test_wrap_tuple():
""" Test conversion of tuples."""
wrapped = wrap_value((HyInteger(0),))
assert type(wrapped) == HyList
assert type(wrapped[0]) == HyInteger
assert wrapped == HyList([HyInteger(0)])
def test_wrap_nested_expr():
""" Test conversion of HyExpressions with embedded non-HyObjects."""
wrapped = wrap_value(HyExpression([long_type(0)]))
assert type(wrapped) == HyExpression
assert type(wrapped[0]) == HyInteger
assert wrapped == HyExpression([HyInteger(0)])
def test_replace_long_type():
""" Test replacing integers."""
replaced = replace_hy_obj(long_type(0), HyInteger(13))
assert replaced == HyInteger(0)
def test_replace_string_type():
"""Test replacing python string"""
replaced = replace_hy_obj(str_type("foo"), HyString("bar"))
assert replaced == HyString("foo")
def test_replace_tuple():
""" Test replacing tuples."""
replaced = replace_hy_obj((long_type(0), ), HyInteger(13))
assert type(replaced) == HyList
assert type(replaced[0]) == HyInteger
assert replaced == HyList([HyInteger(0)])
def test_list_add():
"""Check that adding two HyLists generates a HyList"""
a = HyList([1, 2, 3])
b = HyList([3, 4, 5])
c = a + b
assert c == [1, 2, 3, 3, 4, 5]
assert c.__class__ == HyList
def test_list_slice():
"""Check that slicing a HyList produces a HyList"""
a = HyList([1, 2, 3, 4])
sl1 = a[1:]
sl5 = a[5:]
assert type(sl1) == HyList
assert sl1 == HyList([2, 3, 4])
assert type(sl5) == HyList
assert sl5 == HyList([])
hydict = HyDict(["a", 1, "b", 2, "c", 3])
def test_dict_items():
assert hydict.items() == [("a", 1), ("b", 2), ("c", 3)]
def test_dict_keys():
assert hydict.keys() == ["a", "b", "c"]
def test_dict_values():
assert hydict.values() == [1, 2, 3]
hyset = HySet([3, 1, 2, 2])
def test_set():
assert hyset == [3, 1, 2, 2]
def test_cons_slicing():
"""Check that cons slicing works as expected"""
cons = HyCons("car", "cdr")
assert cons[0] == "car"
assert cons[1:] == "cdr"
try:
cons[:]
assert True is False
except IndexError:
pass
try:
cons[1]
assert True is False
except IndexError:
pass
def test_cons_replacing():
"""Check that assigning to a cons works as expected"""
cons = HyCons("foo", "bar")
cons[0] = "car"
assert cons == HyCons("car", "bar")
cons[1:] = "cdr"
assert cons == HyCons("car", "cdr")
try:
cons[:] = "foo"
assert True is False
except IndexError:
pass
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def test_number_model_copy():
i = HyInteger(42)
assert (i == copy.copy(i))
assert (i == copy.deepcopy(i))
f = HyFloat(42.)
assert (f == copy.copy(f))
assert (f == copy.deepcopy(f))
c = HyComplex(42j)
assert (c == copy.copy(c))
assert (c == copy.deepcopy(c))
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PRETTY_STRINGS = {
k % ('[1.0] {1.0} (1.0) #{1.0} (0.0 1.0 . 2.0)',):
v.format("""
HyList([
HyFloat(1.0)]),
HyDict([
HyFloat(1.0) # odd
]),
HyExpression([
HyFloat(1.0)]),
HySet([
HyFloat(1.0)]),
<HyCons (
HyFloat(0.0)
HyFloat(1.0)
. HyFloat(2.0))>""")
for k, v in {'[%s]': 'HyList([{}])',
'#{%s}': 'HySet([{}])'}.items()}
PRETTY_STRINGS.update({
'{[1.0] {1.0} (1.0) #{1.0} (0.0 1.0 . 2.0)}':
"""HyDict([
HyList([
HyFloat(1.0)]),
HyDict([
HyFloat(1.0) # odd
])
,
HyExpression([
HyFloat(1.0)]),
HySet([
HyFloat(1.0)])
,
<HyCons (
HyFloat(0.0)
HyFloat(1.0)
. HyFloat(2.0))> # odd
])"""
,
'([1.0] {1.0} (1.0) #{1.0} (0.0 1.0 . 2.0) . 3.0)':
"""<HyCons (
HyList([
HyFloat(1.0)])
HyDict([
HyFloat(1.0) # odd
])
HyExpression([
HyFloat(1.0)])
HySet([
HyFloat(1.0)])
<HyCons (
HyFloat(0.0)
HyFloat(1.0)
. HyFloat(2.0))>
. HyFloat(3.0))>"""
,
'[1.0 1j [] {} () #{}]':
"""HyList([
HyFloat(1.0),
HyComplex(1j),
HyList(),
HyDict(),
HyExpression(),
HySet()])"""
,
'{{1j 2j} {1j 2j [][1j]} {[1j][] 1j 2j} {[1j][1j]}}':
"""HyDict([
HyDict([
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HyComplex(1j), HyComplex(2j)]),
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HyDict([
HyComplex(1j), HyComplex(2j),
HyList(),
HyList([
HyComplex(1j)])
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])
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,
HyDict([
HyList([
HyComplex(1j)]),
HyList()
,
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HyComplex(1j), HyComplex(2j)]),
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HyDict([
HyList([
HyComplex(1j)]),
HyList([
HyComplex(1j)])
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])
])"""})
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def test_compound_model_repr():
HY_LIST_MODELS = (HyExpression, HyDict, HySet, HyList)
with pretty(False):
assert eval(repr(HyCons(1, 2))).__class__ is HyCons
assert eval(repr(HyCons(1, 2))) == HyCons(1, 2)
for model in HY_LIST_MODELS:
assert eval(repr(model())).__class__ is model
assert eval(repr(model([1, 2]))) == model([1, 2])
assert eval(repr(model([1, 2, 3]))) == model([1, 2, 3])
for k, v in PRETTY_STRINGS.items():
# `str` should be pretty, even under `pretty(False)`.
assert clean(str(hy.read_str(k))) == v
for k in PRETTY_STRINGS.keys():
assert eval(repr(hy.read_str(k))) == hy.read_str(k)
with pretty(True):
for model in HY_LIST_MODELS:
assert eval(clean(repr(model()))).__class__ is model
assert eval(clean(repr(model([1, 2])))) == model([1, 2])
assert eval(clean(repr(model([1, 2, 3])))) == model([1, 2, 3])
for k, v in PRETTY_STRINGS.items():
assert clean(repr(hy.read_str(k))) == v