new subcommand "exec": podman implementation

tests/test_exec.py

@@ -0,0 +1,63 @@
+#!/usr/bin/env python3
+
+import os
+import subprocess
+import unittest
+
+from pathlib import Path
+from unittest import mock, skipUnless
+
+from fdroidserver import common, exception, exec
+from .shared_test_code import mkdtemp, APPID, VERCODE, APPID_VERCODE
+
+
+class ExecTest(unittest.TestCase):
+    def setUp(self):
+        self._td = mkdtemp()
+        self.testdir = self._td.name
+        os.chdir(self.testdir)
+        common.config = dict()
+
+    def tearDown(self):
+        self._td.cleanup()
+        common.config = None
+
+
+class Exec_main(ExecTest):
+    @mock.patch('sys.argv', ['fdroid exec', APPID_VERCODE])
+    @mock.patch('fdroidserver.common.get_default_cachedir')
+    @mock.patch('fdroidserver.common.podman_exec')
+    def test_podman(self, podman_exec, get_default_cachedir):
+        get_default_cachedir.return_value = self.testdir
+        common.config['virt_container_type'] = 'podman'
+        exec.main()
+        podman_exec.assert_called_once()
+
+
+@skipUnless(os.path.isdir('/run/podman'), 'Requires Podman to run.')
+class Exec_podman_exec(ExecTest):
+    def _only_run_if_container_exists(self):
+        try:
+            common.get_podman_container(APPID, VERCODE)
+        except exception.BuildException as e:
+            # To run these tests, first do: `./fdroid up com.example:123`
+            self.skipTest(f'Requires Podman container {APPID_VERCODE} to run: {e}')
+
+    def test_no_existing_container(self):
+        appid = 'should.never.exist'
+        f = Path(f'metadata/{appid}.yml')
+        f.parent.mkdir()
+        f.write_text(f.name)
+        with self.assertRaises(subprocess.CalledProcessError) as e:
+            common.podman_exec(appid, 9999999999, ['ls'])
+            self.assertEqual(e.exception.returncode, 1)
+
+    def test_clean_run(self):
+        self._only_run_if_container_exists()
+        common.podman_exec(APPID, VERCODE, ['ls'])
+
+    def test_error_run(self):
+        self._only_run_if_container_exists()
+        with self.assertRaises(subprocess.CalledProcessError) as e:
+            common.podman_exec(APPID, VERCODE, ['/bin/false'])
+            self.assertEqual(e.exception.returncode, 1)