Add unit tests for all modules including config, main, playlist, and server

tests/test_config.py

@@ -0,0 +1,177 @@
+"""Tests unitarios para el módulo config."""
+
+import os
+
+import pytest
+from pydantic import ValidationError
+
+
+@pytest.fixture(autouse=True)
+def clean_env(monkeypatch):
+    """Limpia todas las variables de entorno relevantes antes de cada test."""
+    env_vars = [
+        "HOST",
+        "USERNAME",
+        "PASSWORD",
+        "PORT",
+        "UPDATE_INTERVAL",
+        "OUTPUT_FILE",
+    ]
+    for var in env_vars:
+        monkeypatch.delenv(var, raising=False)
+    yield
+
+
+class TestSettings:
+    """Tests para la clase Settings."""
+
+    def test_settings_with_required_fields(self, monkeypatch):
+        """Test: Settings se crea correctamente con campos obligatorios."""
+        monkeypatch.setenv("HOST", "http://test.com")
+        monkeypatch.setenv("USERNAME", "user")
+        monkeypatch.setenv("PASSWORD", "pass")
+
+        from m3u_list_builder.config import Settings
+
+        # _env_file=None evita leer el archivo .env
+        settings = Settings(_env_file=None)
+
+        assert settings.host == "http://test.com"
+        assert settings.username == "user"
+        assert settings.password == "pass"
+
+    def test_settings_default_values(self, monkeypatch):
+        """Test: Settings usa valores por defecto correctos."""
+        monkeypatch.setenv("HOST", "http://test.com")
+        monkeypatch.setenv("USERNAME", "user")
+        monkeypatch.setenv("PASSWORD", "pass")
+
+        from m3u_list_builder.config import Settings
+
+        settings = Settings(_env_file=None)
+
+        assert settings.port == 8080
+        assert settings.update_interval == 3600
+        assert settings.output_file == "playlist.m3u"
+
+    def test_settings_custom_values(self, monkeypatch):
+        """Test: Settings acepta valores personalizados."""
+        monkeypatch.setenv("HOST", "http://custom.com")
+        monkeypatch.setenv("USERNAME", "custom_user")
+        monkeypatch.setenv("PASSWORD", "custom_pass")
+        monkeypatch.setenv("PORT", "9090")
+        monkeypatch.setenv("UPDATE_INTERVAL", "7200")
+        monkeypatch.setenv("OUTPUT_FILE", "custom.m3u")
+
+        from m3u_list_builder.config import Settings
+
+        settings = Settings(_env_file=None)
+
+        assert settings.host == "http://custom.com"
+        assert settings.username == "custom_user"
+        assert settings.password == "custom_pass"
+        assert settings.port == 9090
+        assert settings.update_interval == 7200
+        assert settings.output_file == "custom.m3u"
+
+    def test_settings_missing_required_host(self, monkeypatch):
+        """Test: Settings falla sin HOST."""
+        monkeypatch.setenv("USERNAME", "user")
+        monkeypatch.setenv("PASSWORD", "pass")
+
+        from m3u_list_builder.config import Settings
+
+        with pytest.raises(ValidationError) as exc_info:
+            Settings(_env_file=None)
+
+        assert "host" in str(exc_info.value).lower()
+
+    def test_settings_missing_required_username(self, monkeypatch):
+        """Test: Settings falla sin USERNAME."""
+        monkeypatch.setenv("HOST", "http://test.com")
+        monkeypatch.setenv("PASSWORD", "pass")
+
+        from m3u_list_builder.config import Settings
+
+        with pytest.raises(ValidationError) as exc_info:
+            Settings(_env_file=None)
+
+        assert "username" in str(exc_info.value).lower()
+
+    def test_settings_missing_required_password(self, monkeypatch):
+        """Test: Settings falla sin PASSWORD."""
+        monkeypatch.setenv("HOST", "http://test.com")
+        monkeypatch.setenv("USERNAME", "user")
+
+        from m3u_list_builder.config import Settings
+
+        with pytest.raises(ValidationError) as exc_info:
+            Settings(_env_file=None)
+
+        assert "password" in str(exc_info.value).lower()
+
+    def test_settings_invalid_port_type(self, monkeypatch):
+        """Test: Settings falla con PORT inválido."""
+        monkeypatch.setenv("HOST", "http://test.com")
+        monkeypatch.setenv("USERNAME", "user")
+        monkeypatch.setenv("PASSWORD", "pass")
+        monkeypatch.setenv("PORT", "invalid")
+
+        from m3u_list_builder.config import Settings
+
+        with pytest.raises(ValidationError):
+            Settings(_env_file=None)
+
+    def test_settings_extra_fields_ignored(self, monkeypatch):
+        """Test: Settings ignora campos extra (extra='ignore')."""
+        monkeypatch.setenv("HOST", "http://test.com")
+        monkeypatch.setenv("USERNAME", "user")
+        monkeypatch.setenv("PASSWORD", "pass")
+        monkeypatch.setenv("UNKNOWN_FIELD", "should_be_ignored")
+
+        from m3u_list_builder.config import Settings
+
+        # No debe lanzar excepción
+        settings = Settings(_env_file=None)
+        assert not hasattr(settings, "unknown_field")
+
+    def test_settings_reads_env_file(self, tmp_path, monkeypatch):
+        """Test: Settings puede leer desde archivo .env."""
+        # Crear archivo .env temporal
+        env_file = tmp_path / ".env"
+        env_file.write_text(
+            "HOST=http://from-env-file.com\nUSERNAME=envuser\nPASSWORD=envpass\n"
+        )
+
+        from m3u_list_builder.config import Settings
+
+        settings = Settings(_env_file=str(env_file))
+
+        assert settings.host == "http://from-env-file.com"
+        assert settings.username == "envuser"
+        assert settings.password == "envpass"
+
+    def test_settings_invalid_port_type(self, monkeypatch):
+        """Test: Settings falla con PORT inválido."""
+        monkeypatch.setenv("HOST", "http://test.com")
+        monkeypatch.setenv("USERNAME", "user")
+        monkeypatch.setenv("PASSWORD", "pass")
+        monkeypatch.setenv("PORT", "invalid")
+
+        from m3u_list_builder.config import Settings
+
+        with pytest.raises(ValidationError):
+            Settings()
+
+    def test_settings_extra_fields_ignored(self, monkeypatch):
+        """Test: Settings ignora campos extra (extra='ignore')."""
+        monkeypatch.setenv("HOST", "http://test.com")
+        monkeypatch.setenv("USERNAME", "user")
+        monkeypatch.setenv("PASSWORD", "pass")
+        monkeypatch.setenv("UNKNOWN_FIELD", "should_be_ignored")
+
+        from m3u_list_builder.config import Settings
+
+        # No debe lanzar excepción
+        settings = Settings()
+        assert not hasattr(settings, "unknown_field")