[gnome-weather] tests: Fix meson to properly test world_view

[Christopher Davis <christopherdavis src gnome org>]

commit 10ddc6773ebbb95d11f5ea6af1dda8a4e99291ee
Author: Christopher Davis <brainblasted disroot org>
Date:   Sat Jan 26 22:18:55 2019 -0500

    tests: Fix meson to properly test world_view
    
    Meson previously was using `python3` alone instead of executing the test script with python.
    
    Now meson properly runs `python3 tests/world_view.py`.

 tests/meson.build | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/tests/meson.build b/tests/meson.build
index c56bafb..7f81dcf 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -1,2 +1,7 @@
 pyexec = find_program('python3')
-test('world_view', pyexec, workdir: meson.source_root())
+test(
+  'world_view',
+  pyexec,
+  args: [join_paths('tests', 'world_view.py')],
+  workdir: meson.source_root()
+)