hub: throw GenericError in get_archive_file()

relates: #719

tests/test_hub/test_get_archive_file.py

@@ -0,0 +1,43 @@
+import unittest
+import mock
+
+import koji
+import kojihub
+
+FILES = [{'archive_id': 1,
+          'name': 'archive1.zip',
+          'size': 1024},
+         {'archive_id': 1,
+          'name': 'archive2.jar',
+          'size': 4096}]
+
+EMPTY_FILES = []
+
+
+class TestGetArchiveFile(unittest.TestCase):
+
+    @mock.patch('kojihub.list_archive_files')
+    def test_simple(self, list_archive_files):
+        list_archive_files.return_value = FILES
+
+        rv = kojihub.get_archive_file(1, 'archive1.zip')
+        list_archive_files.assert_called_with(1)
+        self.assertEqual(rv, FILES[0])
+
+    @mock.patch('kojihub.list_archive_files')
+    def test_empty_files(self, list_archive_files):
+        list_archive_files.return_value = EMPTY_FILES
+
+        with self.assertRaises(koji.GenericError) as cm:
+            kojihub.get_archive_file(1, 'archive1.zip')
+        list_archive_files.assert_called_with(1)
+        self.assertEqual(cm.exception.args[0], 'Archive#1 doesn\'t contain any files')
+
+    @mock.patch('kojihub.list_archive_files')
+    def test_non_existing_file(self, list_archive_files):
+        list_archive_files.return_value = FILES
+
+        with self.assertRaises(koji.GenericError) as cm:
+            kojihub.get_archive_file(1, 'archive3.xml')
+        list_archive_files.assert_called_with(1)
+        self.assertEqual(cm.exception.args[0], 'No such file: archive3.xml in archive#1')