refactor: rewrite from Ruby/Sinatra to Python/FastAPI

tests/test_config.py

@@ -0,0 +1,112 @@
+"""Tests for Config — loading, merging, defaults, overrides."""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+from volumen.config import Config
+
+MISSING = "/nonexistent/volumen.toml"
+
+
+class TestDefaults:
+    def test_defaults_when_file_missing(self) -> None:
+        config = Config.load(path=MISSING)
+        assert config.port == 9090
+        assert config.language == "en"
+        assert config.host == "0.0.0.0"
+
+    def test_default_content_dir(self) -> None:
+        config = Config.load(path=MISSING)
+        assert config.content_dir == "/var/lib/volumen/posts"
+
+    def test_default_site_title(self) -> None:
+        config = Config.load(path=MISSING)
+        assert config.site["title"] == "My Blog"
+
+
+class TestOverrides:
+    def test_overrides_apply(self) -> None:
+        config = Config.load(
+            path=MISSING,
+            overrides={"host": "127.0.0.1", "port": 9000, "content": "/srv/posts"},
+        )
+        assert config.host == "127.0.0.1"
+        assert config.port == 9000
+        assert config.content_dir == "/srv/posts"
+
+    def test_does_not_mutate_defaults(self) -> None:
+        Config.load(path=MISSING, overrides={"host": "10.0.0.1"})
+        fresh = Config.load(path=MISSING)
+        assert fresh.host == "0.0.0.0"
+
+    def test_does_not_mutate_default_inner_hashes(self) -> None:
+        config = Config.load(path=MISSING)
+        config.site["title"] = "MUTATED"
+        fresh = Config.load(path=MISSING)
+        assert fresh.site["title"] == "My Blog"
+
+
+class TestLoadFromFile:
+    def test_loads_and_merges_file(self, tmp_path: Path) -> None:
+        config_path = tmp_path / "config.toml"
+        config_path.write_text('[site]\ntitle = "Custom"\n')
+        config = Config.load(path=str(config_path))
+        assert config.site["title"] == "Custom"
+        assert config.port == 9090  # default preserved
+
+    def test_loads_server_section(self, tmp_path: Path) -> None:
+        config_path = tmp_path / "config.toml"
+        config_path.write_text('[server]\nhost = "1.2.3.4"\nport = 8000\n')
+        config = Config.load(path=str(config_path))
+        assert config.host == "1.2.3.4"
+        assert config.port == 8000
+
+
+class TestGenerateDefault:
+    def test_generate_default_writes_template(self, tmp_path: Path) -> None:
+        dest = tmp_path / "sub" / "config.toml"
+        result = Config.generate_default(str(dest))
+        assert result == str(dest)
+        assert dest.exists()
+        loaded = Config.load(path=str(dest))
+        assert loaded.port == 9090
+
+    def test_generate_default_skips_existing(self, tmp_path: Path) -> None:
+        config_path = tmp_path / "config.toml"
+        config_path.write_text("[server]\nport = 9999\n")
+        result = Config.generate_default(str(config_path))
+        assert result is None
+        loaded = Config.load(path=str(config_path))
+        assert loaded.port == 9999
+
+
+class TestAccessors:
+    def test_host(self) -> None:
+        config = Config.load(path=MISSING, overrides={"host": "127.0.0.1"})
+        assert config.host == "127.0.0.1"
+
+    def test_port(self) -> None:
+        assert Config.load(path=MISSING).port == 9090
+
+    def test_content_dir(self) -> None:
+        config = Config.load(path=MISSING, overrides={"content": "/tmp/posts"})
+        assert config.content_dir == "/tmp/posts"
+
+    def test_users_file(self) -> None:
+        config = Config.load(path=MISSING)
+        assert config.users_file == "/var/lib/volumen/users.toml"
+
+    def test_site(self) -> None:
+        config = Config.load(path=MISSING)
+        assert isinstance(config.site, dict)
+        assert "title" in config.site
+
+    def test_admin(self) -> None:
+        config = Config.load(path=MISSING)
+        assert isinstance(config.admin, dict)
+        assert "password_hash" in config.admin
+
+    def test_language(self) -> None:
+        config = Config.load(path=MISSING)
+        assert config.language == "en"