Add first test (env var)

diff --git a/tests/test_envvars.py b/tests/test_envvars.py
new file mode 100644 (file)
index 0000000..af89161
--- /dev/null
+++ b/tests/test_envvars.py
@@ -0,0 +1,113 @@
+#!/usr/bin/env python3
+# coding: utf-8
+# SPDX-FileCopyrightText: 2012-2024  kaliko <kaliko@azylum.org>
+# SPDX-License-Identifier: LGPL-3.0-or-later
+# pylint: disable=missing-docstring
+
+import unittest
+import unittest.mock
+import os
+import warnings
+
+import mpdaio.client
+import mpdaio.const
+
+# show deprecation warnings
+warnings.simplefilter('default')
+
+
+class TestEnvVar(unittest.TestCase):
+
+    def test_envvar(self):
+        # mock "os.path.exists" here to ensure there are no socket in
+        # XDG_RUNTIME_DIR/mpd or /run/mpd since with test defaults fallbacks
+        # when :
+        #   * neither MPD_HOST nor XDG_RUNTIME_DIR are not set
+        #   * /run/mpd does not expose a socket
+        with unittest.mock.patch('os.path.exists', return_value=False):
+            os.environ.pop('MPD_HOST', None)
+            os.environ.pop('MPD_PORT', None)
+            client = mpdaio.client.MPDClient()
+            self.assertEqual(client.host, 'localhost')
+            self.assertEqual(client.port, '6600')
+
+            os.environ.pop('MPD_HOST', None)
+            os.environ['MPD_PORT'] = '6666'
+            client = mpdaio.client.MPDClient()
+            self.assertEqual(client.pwd, None)
+            self.assertEqual(client.host, 'localhost')
+            self.assertEqual(client.port, '6666')
+
+        # Test password extraction
+        os.environ['MPD_HOST'] = 'pa55w04d@example.org'
+        client = mpdaio.client.MPDClient()
+        self.assertEqual(client.pwd, 'pa55w04d')
+        self.assertEqual(client.host, 'example.org')
+
+        # Test host alone
+        os.environ['MPD_HOST'] = 'example.org'
+        client = mpdaio.client.MPDClient()
+        self.assertFalse(client.pwd)
+        self.assertEqual(client.host, 'example.org')
+
+        # Test password extraction (no host)
+        os.environ['MPD_HOST'] = 'pa55w04d@'
+        with unittest.mock.patch('os.path.exists', return_value=False):
+            client = mpdaio.client.MPDClient()
+        self.assertEqual(client.pwd, 'pa55w04d')
+        self.assertEqual(client.host, 'localhost')
+
+        # Test badly formatted MPD_HOST
+        os.environ['MPD_HOST'] = '@'
+        with unittest.mock.patch('os.path.exists', return_value=False):
+            client = mpdaio.client.MPDClient()
+        self.assertEqual(client.pwd, None)
+        self.assertEqual(client.host, 'localhost')
+
+        # Test unix socket extraction
+        os.environ['MPD_HOST'] = 'pa55w04d@/unix/sock'
+        client = mpdaio.client.MPDClient()
+        self.assertEqual(client.host, '/unix/sock')
+
+        # Test plain abstract socket extraction
+        os.environ['MPD_HOST'] = '@abstract'
+        client = mpdaio.client.MPDClient()
+        self.assertEqual(client.host, '@abstract')
+
+        # Test password and abstract socket extraction
+        os.environ['MPD_HOST'] = 'pass@@abstract'
+        client = mpdaio.client.MPDClient()
+        self.assertEqual(client.pwd, 'pass')
+        self.assertEqual(client.host, '@abstract')
+
+        # Test unix socket fallback
+        os.environ.pop('MPD_HOST', None)
+        os.environ.pop('MPD_PORT', None)
+        os.environ.pop('XDG_RUNTIME_DIR', None)
+        with unittest.mock.patch('os.path.exists', return_value=True):
+            client = mpdaio.client.MPDClient()
+            self.assertEqual(client.host, '/run/mpd/socket')
+            os.environ['XDG_RUNTIME_DIR'] = '/run/user/1000'
+            client = mpdaio.client.MPDClient()
+            self.assertEqual(client.host, '/run/user/1000/mpd/socket')
+
+        os.environ.pop('MPD_HOST', None)
+        os.environ.pop('MPD_PORT', None)
+        os.environ['XDG_RUNTIME_DIR'] = '/run/user/1000/'
+        with unittest.mock.patch('os.path.exists', return_value=True):
+            client = mpdaio.client.MPDClient()
+            self.assertEqual(client.host, '/run/user/1000/mpd/socket')
+
+        # Test MPD_TIMEOUT
+        os.environ.pop('MPD_TIMEOUT', None)
+        client = mpdaio.client.MPDClient()
+        self.assertEqual(client.mpd_timeout, mpdaio.const.CONNECTION_TIMEOUT)
+        os.environ['MPD_TIMEOUT'] = 'garbage'
+        client = mpdaio.client.MPDClient()
+        self.assertEqual(client.mpd_timeout,
+                         mpdaio.const.CONNECTION_TIMEOUT,
+                         'Garbage is silently ignore to use default value')
+        os.environ['MPD_TIMEOUT'] = '42'
+        del client
+        client = mpdaio.client.MPDClient()
+        self.assertEqual(client.mpd_timeout, 42)