Add a couple more tests

To test some parts of the code where, if we fail, we only find out
in almond-dialog-agent or genie and then it's pain to fix

test/sample.apps

@@ -1942,3 +1942,10 @@ now => @light-bulb(name="bathroom").set_power(power=enum(on));
 now => @light-bulb(name="ceiling").set_power(power=enum(on));
 
 let query x(p_name : String) := @light-bulb(name=p_name).set_power(power=enum(on));
+
+====
+
+dataset @light-bulb {
+  action (p_name : String) := @light-bulb(name=p_name).set_power(power=enum(on))
+  #_[utterances=["turn on my $p_name lights"]];
+}

test/test_example_program.js

@@ -39,6 +39,9 @@ var TEST_CASES = [
 
     ['dataset foo { action (p_song1 : String, p_song2 : String) := @com.spotify.play_songs(songs=[p_song1, p_song2]); }',
      'now => @com.spotify.play_songs(songs=[__const_SLOT_0, __const_SLOT_1]);'],
+
+     ['dataset foo { action (p_name : String) := @light-bulb(name=p_name).set_power(power=enum(on)); }',
+     'now => @light-bulb(name=__const_SLOT_0).set_power(power=enum(on));'],
 ];
 
 function test(i) {