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# --------------------------------------------------------------------------------------
# Copyright (c) 2013-2025, Nucleic Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file LICENSE, distributed with this software.
# --------------------------------------------------------------------------------------
"""Test the sortedmap that acts like an ordered dictionary."""
import gc
import pytest
from atom.api import Atom, Value, atomref
from atom.datastructures.api import sortedmap
@pytest.fixture
def smap():
"""Sortedmap used for testing."""
smap = sortedmap()
smap["a"] = 1
smap["b"] = 2
smap["c"] = 3
return smap
def test_sortedmap_init():
"""Test initializing a sortedmap."""
smap = sortedmap({})
assert smap.items() == []
smap = sortedmap([(1, 2)])
assert smap.items() == [(1, 2)]
smap = sortedmap({1: 2})
assert smap.items() == [(1, 2)]
with pytest.raises(TypeError):
sortedmap(1)
with pytest.raises(TypeError) as excinfo:
sortedmap([1])
assert "pairs" in excinfo.exconly()
def test_traverse():
"""Test traversing on deletion."""
class Holder(Atom):
smap = Value()
h = Holder()
smap = sortedmap()
# Create a reference cycle
h.smap = smap
smap[1] = h
# Create a weakref to check that the objects involved in teh cycle are
# collected
ref = atomref(h)
del smap, h
gc.collect()
assert not ref()
def test_contains(smap):
"""Test contains test."""
assert "a" in smap
assert 1 not in smap
def test_indexing(smap):
"""Test using indexing for get and set operations."""
assert smap["a"] == 1
smap["a"] = 2
assert smap["a"] == 2
with pytest.raises(KeyError):
smap[1]
with pytest.raises(KeyError):
sortedmap()[1]
def test_get(smap):
"""Test the get method of sortedmap."""
assert smap.get("a") == 1
assert smap.get("d") is None
assert smap.get("e", 4) == 4
# Test bad parameters for get
with pytest.raises(TypeError):
smap.get()
with pytest.raises(TypeError):
smap.get("r", None, None)
def test_pop(smap):
"""Test the pop method of sortedmap."""
assert smap.pop("b") == 2
assert "b" not in smap
assert smap.pop("b", 1) == 1
assert smap.keys() == ["a", "c"]
assert smap.pop("d", 1) == 1
with pytest.raises(KeyError):
smap.pop("b")
# Test bad parameters for pop
with pytest.raises(TypeError):
smap.pop()
with pytest.raises(TypeError):
smap.pop(None, None, None)
def test_keys_values_items(smap):
"""Test the keys, values and items."""
assert smap.keys() == ["a", "b", "c"]
assert smap.values() == [1, 2, 3]
assert smap.items() == [("a", 1), ("b", 2), ("c", 3)]
def test_iter(smap):
"""Test iterating sortedmap."""
keys = smap.keys()
for i, k in enumerate(smap):
assert keys[i] == k
def test_ordering_with_inhomogeneous(smap):
"""Test the ordering of the map."""
smap["d"] = 4
assert list(smap.keys()) == ["a", "b", "c", "d"]
smap["0"] = 4
assert list(smap.keys()) == ["0", "a", "b", "c", "d"]
smap[1] = 4
assert list(smap.keys()) == [1, "0", "a", "b", "c", "d"]
# Test ordering None, which is smaller than anything
s = sortedmap()
s[1] = 1
s[None] = 1
assert list(s.keys()) == [None, 1]
s = sortedmap()
s[None] = 1
s[1] = 1
assert list(s.keys()) == [None, 1]
# Test ordering class that cannot be ordered through the usual mean
class T:
pass
t1 = T()
t2 = T()
oT = T
class T:
pass
u = T()
s = sortedmap()
s[t1] = 1
s[t2] = 1
assert list(s.keys()) == [t1, t2] if id(t1) < id(t2) else [t2, t1]
s[u] = 1
assert next(iter(s.keys())) is u if id(T) < id(oT) else list(s.keys())[-1] is u
def test_deleting_keys(smap):
"""Test deleting items."""
del smap["c"]
assert smap.keys() == ["a", "b"]
with pytest.raises(KeyError):
del smap[1]
with pytest.raises(KeyError):
del sortedmap()[1]
def test_repr(smap):
"""Test getting the repr of the map."""
assert "sortedmap" in repr(smap)
new_smap = eval(repr(smap))
assert new_smap.items() == smap.items()
# assert eval(repr(smap)) == smap
def test_copying(smap):
"""Test copying a sortedmap."""
csmap = smap.copy()
assert csmap is not smap
assert csmap.keys() == smap.keys()
assert csmap.values() == smap.values()
assert csmap.items() == smap.items()
def test_sizeof(smap):
"""Test comuting the size."""
smap.__sizeof__()
def test_clear(smap):
"""Test clearing a map."""
smap.clear()
assert not smap
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