esphome/tests/unit_tests/test_helpers.py

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import pytest
from hypothesis import given
from hypothesis.provisional import ip4_addr_strings
from esphome import helpers
@pytest.mark.parametrize("preferred_string, current_strings, expected", (
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("foo", [], "foo"),
# TODO: Should this actually start at 1?
("foo", ["foo"], "foo_2"),
("foo", ("foo",), "foo_2"),
("foo", ("foo", "foo_2"), "foo_3"),
("foo", ("foo", "foo_2", "foo_2"), "foo_3"),
))
def test_ensure_unique_string(preferred_string, current_strings, expected):
actual = helpers.ensure_unique_string(preferred_string, current_strings)
assert actual == expected
@pytest.mark.parametrize("text, expected", (
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("foo", "foo"),
("foo\nbar", "foo\nbar"),
("foo\nbar\neek", "foo\n bar\neek"),
))
def test_indent_all_but_first_and_last(text, expected):
actual = helpers.indent_all_but_first_and_last(text)
assert actual == expected
@pytest.mark.parametrize("text, expected", (
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("foo", [" foo"]),
("foo\nbar", [" foo", " bar"]),
("foo\nbar\neek", [" foo", " bar", " eek"]),
))
def test_indent_list(text, expected):
actual = helpers.indent_list(text)
assert actual == expected
@pytest.mark.parametrize("text, expected", (
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("foo", " foo"),
("foo\nbar", " foo\n bar"),
("foo\nbar\neek", " foo\n bar\n eek"),
))
def test_indent(text, expected):
actual = helpers.indent(text)
assert actual == expected
@pytest.mark.parametrize("string, expected", (
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("foo", '"foo"'),
("foo\nbar", '"foo\\012bar"'),
("foo\\bar", '"foo\\134bar"'),
('foo "bar"', '"foo \\042bar\\042"'),
('foo 🐍', '"foo \\360\\237\\220\\215"'),
))
def test_cpp_string_escape(string, expected):
actual = helpers.cpp_string_escape(string)
assert actual == expected
@pytest.mark.parametrize("host", (
"127.0.0", "localhost", "127.0.0.b",
))
def test_is_ip_address__invalid(host):
actual = helpers.is_ip_address(host)
assert actual is False
@given(value=ip4_addr_strings())
def test_is_ip_address__valid(value):
actual = helpers.is_ip_address(value)
assert actual is True
@pytest.mark.parametrize("var, value, default, expected", (
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("FOO", None, False, False),
("FOO", None, True, True),
("FOO", "", False, False),
("FOO", "Yes", False, True),
("FOO", "123", False, True),
))
def test_get_bool_env(monkeypatch, var, value, default, expected):
if value is None:
monkeypatch.delenv(var, raising=False)
else:
monkeypatch.setenv(var, value)
actual = helpers.get_bool_env(var, default)
assert actual == expected
@pytest.mark.parametrize("value, expected", (
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(None, False),
("Yes", True)
))
def test_is_hassio(monkeypatch, value, expected):
if value is None:
monkeypatch.delenv("ESPHOME_IS_HASSIO", raising=False)
else:
monkeypatch.setenv("ESPHOME_IS_HASSIO", value)
actual = helpers.is_hassio()
assert actual == expected
def test_walk_files(fixture_path):
path = fixture_path / "helpers"
actual = list(helpers.walk_files(path))
# Ensure paths start with the root
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assert all(p.startswith(str(path)) for p in actual)
class Test_write_file_if_changed:
def test_src_and_dst_match(self, tmp_path):
text = "A files are unique.\n"
initial = text
dst = tmp_path / "file-a.txt"
dst.write_text(initial)
helpers.write_file_if_changed(dst, text)
assert dst.read_text() == text
def test_src_and_dst_do_not_match(self, tmp_path):
text = "A files are unique.\n"
initial = "B files are unique.\n"
dst = tmp_path / "file-a.txt"
dst.write_text(initial)
helpers.write_file_if_changed(dst, text)
assert dst.read_text() == text
def test_dst_does_not_exist(self, tmp_path):
text = "A files are unique.\n"
dst = tmp_path / "file-a.txt"
helpers.write_file_if_changed(dst, text)
assert dst.read_text() == text
class Test_copy_file_if_changed:
def test_src_and_dst_match(self, tmp_path, fixture_path):
src = fixture_path / "helpers" / "file-a.txt"
initial = fixture_path / "helpers" / "file-a.txt"
dst = tmp_path / "file-a.txt"
dst.write_text(initial.read_text())
helpers.copy_file_if_changed(src, dst)
def test_src_and_dst_do_not_match(self, tmp_path, fixture_path):
src = fixture_path / "helpers" / "file-a.txt"
initial = fixture_path / "helpers" / "file-c.txt"
dst = tmp_path / "file-a.txt"
dst.write_text(initial.read_text())
helpers.copy_file_if_changed(src, dst)
assert src.read_text() == dst.read_text()
def test_dst_does_not_exist(self, tmp_path, fixture_path):
src = fixture_path / "helpers" / "file-a.txt"
dst = tmp_path / "file-a.txt"
helpers.copy_file_if_changed(src, dst)
assert dst.exists()
assert src.read_text() == dst.read_text()
@pytest.mark.parametrize("file1, file2, expected", (
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# Same file
("file-a.txt", "file-a.txt", True),
# Different files, different size
("file-a.txt", "file-b_1.txt", False),
# Different files, same size
("file-a.txt", "file-c.txt", False),
# Same files
("file-b_1.txt", "file-b_2.txt", True),
# Not a file
("file-a.txt", "", False),
# File doesn't exist
("file-a.txt", "file-d.txt", False),
))
def test_file_compare(fixture_path, file1, file2, expected):
path1 = fixture_path / "helpers" / file1
path2 = fixture_path / "helpers" / file2
actual = helpers.file_compare(path1, path2)
assert actual == expected