[occur] make occur doc react to keyboard evts / highlight it

lib/ace/occur_test.js

@@ -71,17 +71,28 @@ module.exports = {
     },
 
     "test: occur command" : function() {
+        // setup
         var lines = ['hel', 'lo', '', 'wo', 'rld'];
         session.doc.insertLines(0, lines);
         editor.commands.addCommands(occurCommands);
+
+        // run occur for lines including 'o'
         editor.execCommand('occur', {needle: 'o'});
         assert.equal(session.getValue(), 'lo\nwo');
+
+        // command install OK?
+        assert.ok(editor.getReadOnly(), 'occur doc not marked as read only');
         assert.ok(editor.getKeyboardHandler().isOccurHandler, 'no occur handler installed');
         assert.ok(editor.commands.byName.occurexit, 'no exitoccur command installed');
+
+        // exit occur
         editor.execCommand('occurexit');
+        assert.equal(session.getValue(), lines.join('\n') + '\n');
+
+        // editor state cleaned up?
+        assert.ok(!editor.getReadOnly(), 'original doc is marked as read only');
         assert.ok(!editor.getKeyboardHandler().isOccurHandler, 'occur handler installed after detach');
         assert.ok(!editor.commands.byName.occurexit, 'exitoccur installed after exiting occur');
-        assert.equal(session.getValue(), lines.join('\n') + '\n');
     }
 
 };