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test_core.py
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181 lines (139 loc) · 4.96 KB
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# -*- coding: utf-8 -*-
from __future__ import unicode_literals
import contextlib
import os
import sys
import textwrap
import warnings
import pytest
import sh
from dotenv import dotenv_values, find_dotenv, load_dotenv, set_key
from dotenv.compat import PY2, StringIO
@contextlib.contextmanager
def restore_os_environ():
environ = dict(os.environ)
try:
yield
finally:
os.environ.update(environ)
def test_warns_if_file_does_not_exist():
with warnings.catch_warnings(record=True) as w:
load_dotenv('.does_not_exist', verbose=True)
assert len(w) == 1
assert w[0].category is UserWarning
assert str(w[0].message) == "File doesn't exist .does_not_exist"
def test_find_dotenv(tmp_path):
"""
Create a temporary folder structure like the following:
test_find_dotenv0/
└── child1
├── child2
│ └── child3
│ └── child4
└── .env
Then try to automatically `find_dotenv` starting in `child4`
"""
curr_dir = tmp_path
dirs = []
for f in ['child1', 'child2', 'child3', 'child4']:
curr_dir /= f
dirs.append(curr_dir)
curr_dir.mkdir()
child1, child4 = dirs[0], dirs[-1]
# change the working directory for testing
os.chdir(str(child4))
# try without a .env file and force error
with pytest.raises(IOError):
find_dotenv(raise_error_if_not_found=True, usecwd=True)
# try without a .env file and fail silently
assert find_dotenv(usecwd=True) == ''
# now place a .env file a few levels up and make sure it's found
dotenv_file = child1 / '.env'
dotenv_file.write_bytes(b"TEST=test\n")
assert find_dotenv(usecwd=True) == str(dotenv_file)
def test_load_dotenv(tmp_path):
os.chdir(str(tmp_path))
dotenv_path = '.test_load_dotenv'
sh.touch(dotenv_path)
set_key(dotenv_path, 'DOTENV', 'WORKS')
assert 'DOTENV' not in os.environ
success = load_dotenv(dotenv_path)
assert success
assert 'DOTENV' in os.environ
assert os.environ['DOTENV'] == 'WORKS'
def test_load_dotenv_override(tmp_path):
os.chdir(str(tmp_path))
dotenv_path = '.test_load_dotenv_override'
key_name = "DOTENV_OVER"
sh.touch(dotenv_path)
os.environ[key_name] = "OVERRIDE"
set_key(dotenv_path, key_name, 'WORKS')
success = load_dotenv(dotenv_path, override=True)
assert success
assert key_name in os.environ
assert os.environ[key_name] == 'WORKS'
def test_load_dotenv_in_current_dir(tmp_path):
dotenv_path = tmp_path / '.env'
dotenv_path.write_bytes(b'a=b')
code_path = tmp_path / 'code.py'
code_path.write_text(textwrap.dedent("""
import dotenv
import os
dotenv.load_dotenv(verbose=True)
print(os.environ['a'])
"""))
os.chdir(str(tmp_path))
result = sh.Command(sys.executable)(code_path)
assert result == 'b\n'
def test_ipython(tmp_path):
from IPython.terminal.embed import InteractiveShellEmbed
os.chdir(str(tmp_path))
dotenv_file = tmp_path / '.env'
dotenv_file.write_text("MYNEWVALUE=q1w2e3\n")
ipshell = InteractiveShellEmbed()
ipshell.magic("load_ext dotenv")
ipshell.magic("dotenv")
assert os.environ["MYNEWVALUE"] == 'q1w2e3'
def test_ipython_override(tmp_path):
from IPython.terminal.embed import InteractiveShellEmbed
os.chdir(str(tmp_path))
dotenv_file = tmp_path / '.env'
os.environ["MYNEWVALUE"] = "OVERRIDE"
dotenv_file.write_text("MYNEWVALUE=q1w2e3\n")
ipshell = InteractiveShellEmbed()
ipshell.magic("load_ext dotenv")
ipshell.magic("dotenv -o")
assert os.environ["MYNEWVALUE"] == 'q1w2e3'
def test_dotenv_values_stream():
stream = StringIO(u'hello="it works!😃"\nDOTENV=${hello}\n')
stream.seek(0)
parsed_dict = dotenv_values(stream=stream)
assert 'DOTENV' in parsed_dict
assert parsed_dict['DOTENV'] == u'it works!😃'
def test_dotenv_values_export():
stream = StringIO('export foo=bar\n')
stream.seek(0)
load_dotenv(stream=stream)
assert 'foo' in os.environ
assert os.environ['foo'] == 'bar'
def test_dotenv_values_utf_8():
stream = StringIO(u"a=à\n")
load_dotenv(stream=stream)
if PY2:
assert os.environ["a"] == u"à".encode(sys.getfilesystemencoding())
else:
assert os.environ["a"] == "à"
def test_dotenv_empty_selfreferential_interpolation():
stream = StringIO(u'some_path="${some_path}:a/b/c"\n')
stream.seek(0)
assert u'some_path' not in os.environ
parsed_dict = dotenv_values(stream=stream)
assert {u'some_path': u':a/b/c'} == parsed_dict
def test_dotenv_nonempty_selfreferential_interpolation():
stream = StringIO(u'some_path="${some_path}:a/b/c"\n')
stream.seek(0)
assert u'some_path' not in os.environ
with restore_os_environ():
os.environ[u'some_path'] = u'x/y/z'
parsed_dict = dotenv_values(stream=stream)
assert {u'some_path': u'x/y/z:a/b/c'} == parsed_dict