Fix directory paths configured by the config loader.

Home paths provided in the -h parameter or SLIVKA_HOME were used
as is without resolving symlinks. On the other hand, os.getcwd
and paths to input and output files were formed with os.realpath
which resolved all symlinks.
It was actually a problem with an api code converting paths to
ids in a hacky way, but changing all paths to real paths works too.
Fix #129

slivka/conf/loaders.py

@@ -30,11 +30,21 @@ class ImproperlyConfigured(Exception):
     pass
 
 
-compatible_config_ver = ['0.3', '0.8', '0.8.0', '0.8.1', '0.8.2', '0.8.3']
+compatible_config_ver = [
+    "0.3",
+    "0.8",
+    "0.8.0",
+    "0.8.1",
+    "0.8.2",
+    "0.8.3",
+    "0.8.4",
+    "0.8.5",
+]
 
 
 def load_settings_0_3(config, home=None) -> 'SlivkaSettings':
     home = home or os.getenv('SLIVKA_HOME', os.getcwd())
+    home = os.path.realpath(home)
     if config['version'] not in compatible_config_ver:
         raise ImproperlyConfigured("Expected config version 0.8")
     config = flatten_mapping(config)

slivka/server/forms/file_proxy.py

@@ -87,7 +87,7 @@ def _del_file(self):
     def save_as(self, path, fp=None):
         """
         Saves the file at the specified location. If ``fp`` is specified it
-        will be used to write the content. Otherwise, a new file at ``path``
+        will be used as a write destination. Otherwise, a new file at ``path``
         will be created.
 
         :param path: Path to the destination file

test/conf/loaders.py

@@ -0,0 +1,28 @@
+import os
+from unittest import mock
+
+import pytest
+import yaml
+
+import slivka.conf.loaders
+from slivka.compat.resources import open_text
+
+
+@pytest.fixture
+def dict_config():
+    with open_text('test', 'resources/minimal_project/settings.yaml') as stream:
+        return yaml.safe_load(stream)
+
+
+def test_conf_directory_real_path(tmp_path, dict_config):
+    real_home = tmp_path / "real-slivka"
+    os.mkdir(real_home)
+    home = tmp_path / "slivka"
+    os.symlink(real_home, home, target_is_directory=True)
+    with mock.patch.dict(os.environ, SLIVKA_HOME=str(home)):
+        conf = slivka.conf.loaders.load_settings_0_3(dict_config)
+    assert conf.directory.home == str(real_home)
+    assert conf.directory.jobs == str(real_home / 'jobs')
+    assert conf.directory.uploads == str(real_home / 'uploads')
+    assert conf.directory.logs == str(real_home / 'log')
+    assert conf.directory.services == str(real_home)