[gnome-battery-bench] integration-test: adapt for json output change

[Christian Kellner <gicmo src gnome org>]

commit c4d6f9d7f1431f805cfe3408e5d6c5fdee8928ca
Author: Christian Kellner <gicmo gnome org>
Date:   Thu May 11 14:27:49 2017 +0200

    integration-test: adapt for json output change
    
    The JSON we get from 'gbb info --json' is now omitting fields that
    were previously reported as 'Unknown'.

 src/integration-test |   12 ++++--------
 1 files changed, 4 insertions(+), 8 deletions(-)
---
diff --git a/src/integration-test b/src/integration-test
index 93dbde9..715007c 100755
--- a/src/integration-test
+++ b/src/integration-test
@@ -192,8 +192,8 @@ class Tests(unittest.TestCase):
     def test_basic(self):
         '''Basic system information (model, bios, etc)
 
-        In the first run we ensure that we get 'Unknown' for all
-        fields that we haven't set in /sys, then we fill them for them
+        In the first run we ensure that we don't have the fields in the
+        json that we haven't set in /sys, then we fill them for them
         second run and check we get the right values
         '''
         log = self.gbb("info", ["--json"])
@@ -201,12 +201,8 @@ class Tests(unittest.TestCase):
 
         self.assertIn('hardware', out)
         hw = out['hardware']
-        for key in ['vendor', 'version', 'name']:
-            self.assertEqual(hw[key], 'Unknown')
-        self.assertIn('bios', hw)
-        bios = hw['bios']
-        for key in ['vendor', 'version', 'date']:
-            self.assertEqual(bios[key], 'Unknown')
+        for key in ['vendor', 'version', 'name', 'bios']:
+            self.assertNotIn(key, hw)
 
         self.assertIn('batteries', hw)
         self.assertEqual(len(hw['batteries']), 0)