add auth tests

tests/test_auth.py

@@ -0,0 +1,37 @@
+from pathlib import Path
+
+from opera_rtc_s1_browse import auth
+
+
+def test_get_netrc(monkeypatch):
+    with monkeypatch.context() as m:
+        m.setattr(auth, 'system', lambda: 'Windows')
+        assert auth.get_netrc() == Path.home() / '_netrc'
+
+    with monkeypatch.context() as m:
+        m.setattr(auth, 'system', lambda: 'Linux')
+        assert auth.get_netrc() == Path.home() / '.netrc'
+
+
+def test_find_creds_in_env(monkeypatch):
+    with monkeypatch.context() as m:
+        m.setenv('TEST_USERNAME', 'foo')
+        m.setenv('TEST_PASSWORD', 'bar')
+        assert auth.find_creds_in_env('TEST_USERNAME', 'TEST_PASSWORD') == ('foo', 'bar')
+
+    with monkeypatch.context() as m:
+        m.delenv('TEST_USERNAME', raising=False)
+        m.delenv('TEST_PASSWORD', raising=False)
+        assert auth.find_creds_in_env('TEST_USERNAME', 'TEST_PASSWORD') == (None, None)
+
+
+def test_find_creds_in_netrc(tmp_path, monkeypatch):
+    with monkeypatch.context() as m:
+        m.setattr(auth, 'get_netrc', lambda: tmp_path / '.netrc')
+        (tmp_path / '.netrc').write_text('machine test login foo password bar')
+        assert auth.find_creds_in_netrc('test') == ('foo', 'bar')
+
+    with monkeypatch.context() as m:
+        m.setattr(auth, 'get_netrc', lambda: tmp_path / '.netrc')
+        (tmp_path / '.netrc').write_text('')
+        assert auth.find_creds_in_netrc('test') == (None, None)