Unify error messages

Unify error messages for CLI

Unify error messages for hub

Fixes: https://pagure.io/koji/issue/2720

tests/test_hub/test_getRPM.py

@@ -0,0 +1,38 @@
+import unittest
+import mock
+
+import koji
+import kojihub
+
+
+class TestGetRPM(unittest.TestCase):
+
+    def test_wrong_type_rpminfo(self):
+        rpminfo = ['test-user']
+        with self.assertRaises(koji.GenericError) as cm:
+            kojihub.get_rpm(rpminfo)
+        self.assertEqual("Invalid type for rpminfo: %s" % type(rpminfo), str(cm.exception))
+
+
+class TestGetRPMHeaders(unittest.TestCase):
+
+    def setUp(self):
+        self.exports = kojihub.RootExports()
+        self.exports.getLoggedInUser = mock.MagicMock()
+        self.context = mock.patch('kojihub.context').start()
+        self.cursor = mock.MagicMock()
+
+    def test_taskid_invalid_path(self):
+        self.cursor.fetchone.return_value = None
+        self.context.cnx.cursor.return_value = self.cursor
+        filepath = '../test/path'
+        with self.assertRaises(koji.GenericError) as cm:
+            self.exports.getRPMHeaders(taskID=99, filepath=filepath)
+        self.assertEqual("Invalid filepath: %s" % filepath, str(cm.exception))
+
+    def test_taskid_without_filepath(self):
+        self.cursor.fetchone.return_value = None
+        self.context.cnx.cursor.return_value = self.cursor
+        with self.assertRaises(koji.GenericError) as cm:
+            self.exports.getRPMHeaders(taskID=99)
+        self.assertEqual("filepath must be specified with taskID", str(cm.exception))