Changes: print help from single-instance binary starting single-instance without parameters +2 lines

RevBy: Trust me

tests/harmattan/invoker-tests/tests.xml

@@ -27,6 +27,10 @@
           <step expected_result="0">source /tmp/session_bus_address.user; DISPLAY=:0 `pyversions -d` /usr/share/applauncherd-testscripts/test-invoker.py test_invoker_usage_printing</step>
       </case>
 
+      <case name="applauncherd__test_invoker_help_printing" type="Functional" description="Test that applauncherd invoker ,help usage printing ok" timeout="360" level="System" insignificant="false">
+          <step expected_result="0">source /tmp/session_bus_address.user; DISPLAY=:0 `pyversions -d` /usr/share/applauncherd-testscripts/test-invoker.py test_invoker_help_printing</step>
+      </case>
+
       <case name="applauncherd__test_invoker_search_prog" type="Functional" description="Test that invoker finds binaries from PATH" timeout="360" level="System" insignificant="false">
           <step expected_result="0">source /tmp/session_bus_address.user; DISPLAY=:0  `pyversions -d` /usr/share/applauncherd-testscripts/test-invoker.py test_invoker_search_prog</step>
       </case>

tests/harmattan/testscripts/test-invoker.py

@@ -403,6 +403,14 @@ class InvokerTests(unittest.TestCase):
         p = run_cmd_as_user('invoker --help')
         self.assert_(p.wait() == 0, "'invoker --help' failed")
 
+    def test_invoker_help_printing(self):
+        """
+        Test that applauncherd invoker usage printing ok
+        """
+
+        p = run_cmd_as_user('invoker')
+        self.assert_(p.wait() == 1, "'invoker' failed")
+
     def test_app_link(self):
         """
         Test that symlink of an application can be launched.