Add startcomponent test cases and setup (#346)

.gitignore

@@ -71,3 +71,4 @@ pyproject.toml
 
 # Python environment
 .venv/
+.DS_Store

tests/django_test_setup.py

@@ -14,7 +14,12 @@ if not settings.configured:
         MIDDLEWARE=[
             "django_components.middleware.ComponentDependencyMiddleware"
         ],
-        DATABASES={},
+        DATABASES={
+            "default": {
+                "ENGINE": "django.db.backends.sqlite3",
+                "NAME": ":memory:",
+            }
+        },
     )
 
     django.setup()

tests/test_startcomponent_command.py

@@ -0,0 +1,123 @@
+import os
+import tempfile
+from io import StringIO
+from shutil import rmtree
+
+from django.core.management import call_command
+from django.core.management.base import CommandError
+from django.test import TestCase
+
+from .django_test_setup import *  # NOQA
+
+
+class CreateComponentCommandTest(TestCase):
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+        cls.temp_dir = tempfile.mkdtemp()
+
+    @classmethod
+    def tearDownClass(cls):
+        super().tearDownClass()
+        rmtree(cls.temp_dir)
+
+    def test_default_file_names(self):
+        component_name = "defaultcomponent"
+        call_command("startcomponent", component_name, "--path", self.temp_dir)
+
+        expected_files = [
+            os.path.join(self.temp_dir, component_name, "script.js"),
+            os.path.join(self.temp_dir, component_name, "style.css"),
+            os.path.join(self.temp_dir, component_name, "template.html"),
+        ]
+        for file_path in expected_files:
+            self.assertTrue(os.path.exists(file_path))
+
+    def test_nondefault_creation(self):
+        component_name = "testcomponent"
+        call_command(
+            "startcomponent",
+            component_name,
+            "--path",
+            self.temp_dir,
+            "--js",
+            "test.js",
+            "--css",
+            "test.css",
+            "--template",
+            "test.html",
+        )
+
+        expected_files = [
+            os.path.join(self.temp_dir, component_name, "test.js"),
+            os.path.join(self.temp_dir, component_name, "test.css"),
+            os.path.join(self.temp_dir, component_name, "test.html"),
+            os.path.join(
+                self.temp_dir, component_name, f"{component_name}.py"
+            ),
+        ]
+
+        for file_path in expected_files:
+            self.assertTrue(
+                os.path.exists(file_path), f"File {file_path} was not created"
+            )
+
+    def test_dry_run(self):
+        component_name = "dryruncomponent"
+        call_command(
+            "startcomponent",
+            component_name,
+            "--path",
+            self.temp_dir,
+            "--dry-run",
+        )
+
+        component_path = os.path.join(self.temp_dir, component_name)
+        self.assertFalse(os.path.exists(component_path))
+
+    def test_force_overwrite(self):
+        component_name = "existingcomponent"
+        component_path = os.path.join(self.temp_dir, component_name)
+        os.makedirs(component_path)
+
+        with open(
+            os.path.join(component_path, f"{component_name}.py"), "w"
+        ) as f:
+            f.write("hello world")
+
+        call_command(
+            "startcomponent",
+            component_name,
+            "--path",
+            self.temp_dir,
+            "--force",
+        )
+
+        with open(
+            os.path.join(component_path, f"{component_name}.py"), "r"
+        ) as f:
+            self.assertNotIn("hello world", f.read())
+
+    def test_error_existing_component_no_force(self):
+        component_name = "existingcomponent_2"
+        component_path = os.path.join(self.temp_dir, component_name)
+        os.makedirs(component_path)
+
+        with self.assertRaises(CommandError):
+            call_command(
+                "startcomponent", component_name, "--path", self.temp_dir
+            )
+
+    def test_verbose_output(self):
+        component_name = "verbosecomponent"
+        out = StringIO()
+        call_command(
+            "startcomponent",
+            component_name,
+            "--path",
+            self.temp_dir,
+            "--verbose",
+            stdout=out,
+        )
+        output = out.getvalue()
+        self.assertIn("component at", output)