Establish AAISA research foundation

tests/test_cli.py

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+from contextlib import redirect_stderr, redirect_stdout
+from io import StringIO
+import json
+from pathlib import Path
+import tempfile
+import unittest
+
+from aaisa.cli import main
+
+
+class CliTests(unittest.TestCase):
+    def test_clean_scan_returns_zero(self) -> None:
+        with tempfile.TemporaryDirectory() as directory:
+            Path(directory, "safe.txt").write_text("ordinary content\n", encoding="utf-8")
+            output = StringIO()
+            with redirect_stdout(output):
+                result = main(["scan", directory])
+            self.assertEqual(result, 0)
+            self.assertEqual(json.loads(output.getvalue())["summary"]["finding_count"], 0)
+
+    def test_finding_returns_one(self) -> None:
+        with tempfile.TemporaryDirectory() as directory:
+            Path(directory, "requirements.txt").write_text("requests>=2\n", encoding="utf-8")
+            with redirect_stdout(StringIO()):
+                self.assertEqual(main(["scan", directory]), 1)
+
+    def test_missing_path_returns_two(self) -> None:
+        with redirect_stderr(StringIO()):
+            self.assertEqual(main(["scan", "/definitely/missing/aaisa-path"]), 2)
+
+
+if __name__ == "__main__":
+    unittest.main()