Add base project class

catfish/project/__init__.py

@@ -0,0 +1,14 @@
+from dataclasses import dataclass
+from pathlib import Path
+
+
+@dataclass
+class Project:
+    root: Path
+
+    def __post_init__(self):
+        self.root = Path(self.root)
+        assert self.exists()
+
+    def exists(self):
+        return self.root.exists()

tests/__init__.py

@@ -20,6 +20,7 @@ from catfish.utils.sockets import create_base_socket_dir, delete_base_socket_dir
 
 class BaseTestCase(TestCase):
     DUMMY_EXE = os.path.join(os.path.dirname(__file__), "dummy_program.py")
+    EXAMPLE_DIR = os.path.join(os.path.dirname(__file__), "../example")
 
     def setUp(self):
         create_base_socket_dir()

tests/test_project/test_project.py

@@ -0,0 +1,15 @@
+from catfish.project import Project
+from tests import BaseTestCase
+
+
+class ProjectTestCase(BaseTestCase):
+    def setUp(self):
+        super().setUp()
+        self.project = Project(self.EXAMPLE_DIR)
+
+    def test_exists(self):
+        self.assertTrue(self.project.exists())
+
+    def test_cant_create_nonexistent_directory(self):
+        with self.assertRaises(AssertionError):
+            Project("/nonexistent")