[tracker-miners/sam/index-location: 20/21] fixup test

[Sam Thursfield <sthursfield src gnome org>]

commit 23e169a3ad52fbd527621493a59357027f3500b2
Author: Sam Thursfield <sam afuera me uk>
Date:   Fri Jul 10 00:49:50 2020 +0200

    fixup test

 tests/functional-tests/miner-on-demand.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/tests/functional-tests/miner-on-demand.py b/tests/functional-tests/miner-on-demand.py
index 75e2bc569..ee0e91d1e 100755
--- a/tests/functional-tests/miner-on-demand.py
+++ b/tests/functional-tests/miner-on-demand.py
@@ -118,7 +118,8 @@ class MinerOnDemandTest(fixtures.TrackerMinerTest):
 
     def test_index_location_invalid_flag(self):
         testdir = pathlib.Path(self.workdir).joinpath('test-not-monitored')
-        self.miner_fs.index_location(testdir.as_uri(), ['invalid-flag-which-should-trigger-an-error'])
+        with self.assertRaises(GLib.GError) as e:
+            self.miner_fs.index_location(testdir.as_uri(), ['invalid-flag-which-should-trigger-an-error'])