S19: establish engineering repository

tests/test_generator.py

@@ -0,0 +1,59 @@
+"""Check component selection and real Maven bootstrapping with generated/ absent."""
+import importlib.util
+import json
+from pathlib import Path
+import shutil
+import subprocess
+import tempfile
+import unittest
+
+HOME = Path(__file__).resolve().parents[1]
+spec = importlib.util.spec_from_file_location('generator', HOME / 'create-project.py')
+generator = importlib.util.module_from_spec(spec)
+spec.loader.exec_module(generator)
+
+
+class GeneratorTests(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        cls.temporary = tempfile.TemporaryDirectory()
+        cls.addClassCleanup(cls.temporary.cleanup)
+        cls.root = Path(cls.temporary.name)
+        cls.source = cls.root / 'engineering'
+        shutil.copytree(HOME, cls.source, ignore=shutil.ignore_patterns('.git','target','__pycache__'))
+        for args in (['init', '-q'], ['config','user.name','Recipe test'],
+                     ['config','user.email','test@example.invalid'], ['add','.'],
+                     ['commit','-qm','Test release'], ['tag','v1.0.0']):
+            subprocess.run(['git','-C',str(cls.source),*args], check=True, stdout=subprocess.DEVNULL)
+        generator.HOME = cls.source
+
+    def test_component_choices_and_bootstrap_without_generated_files(self):
+        for components in (['backend'], ['frontend'], ['backend','frontend']):
+            with self.subTest(components=components):
+                project = self.root / ('consumer-' + '-'.join(components))
+                generator.create(project, 'sample', components, str(self.source), 'v1.0.0', 'test-runner', 'https://landscape.invalid')
+                self.assertEqual('backend' in components, (project / 'backend/pom.xml').exists())
+                self.assertEqual('frontend' in components, (project / 'frontend/package.json').exists())
+                self.assertIn('test-runner', (project / '.gitea/workflows/build.yaml').read_text())
+                shutil.rmtree(project / 'generated')
+                result = subprocess.run(['mvn','-N','-B','-ntp','-Pregenerate-engineering','validate'], cwd=project,
+                                        text=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, timeout=180)
+                self.assertEqual(0, result.returncode, result.stdout)
+                self.assertTrue((project / 'generated/ci/Ci.java').exists())
+                subprocess.run(['python3','scripts/engineering.py','--check'], cwd=project, check=True, stdout=subprocess.DEVNULL)
+                if components == ['frontend']:
+                    for args in (['npm','ci'], ['npm','run','lint'], ['npm','test'], ['npm','run','build']):
+                        subprocess.run(args, cwd=project / 'frontend', check=True, stdout=subprocess.DEVNULL)
+                    self.assertTrue((project / 'frontend/dist/index.html').exists())
+
+    def test_generator_preserves_existing_destination(self):
+        project = self.root / 'already-exists'
+        project.mkdir()
+        (project / 'important').write_text('preserve')
+        with self.assertRaisesRegex(ValueError, 'must not exist'):
+            generator.create(project, 'sample', ['backend'], str(self.source), 'v1.0.0', 'runner', 'landscape')
+        self.assertEqual('preserve', (project / 'important').read_text())
+
+
+if __name__ == '__main__':
+    unittest.main()