Object with listeners unit tests

frontend-js/src/test/js/ObjectWithListeners-test.js

 var ObjectWithListeners = require('../../main/js/ObjectWithListeners');
-var assert = require('assert');
+
+var logger = require('./logger');
+
+var chai = require('chai');
+var assert = chai.assert;
+var expect = chai.expect;
 
 describe('ObjectWithListeners', function() {
-	it("ObjectWithListeners constructor", function() {
-	  var obj = new ObjectWithListeners();
-	  assert.ok(obj);
-	});
-
-	it("ObjectWithListeners property changes", function() {
-	  var handlerCalled = 0;
-	  var obj = new ObjectWithListeners();
-
-	  var handler = function(e) {
-	    handlerCalled++;
-	  }
-
-	  obj.registerPropertyType("test");
-	
-	  obj.addPropertyChangeListener("test",handler);
-	
-	  obj.firePropertyChangeListener("test","old val","new val");
-	  assert.equal(1, handlerCalled);
-	
-	  obj.firePropertyChangeListener("test","old val","new val");
-  	assert.equal(2, handlerCalled);
-	
-	  obj.removePropertyListener("test",handler);
-	
-	  obj.firePropertyChangeListener("test","old val","new val");
-	  assert.equal(2, handlerCalled);
-	});
-});
+  beforeEach(function() {
+    logger.flushBuffer();
+  });
+  
+  it("ObjectWithListeners constructor", function() {
+    var obj = new ObjectWithListeners();
+    assert.ok(obj);
+  });
+
+  it("add invalid listener", function() {
+    var obj = new ObjectWithListeners();
+    obj.registerListenerType("t");
+    var code = function(){obj.addListener("t", "not a function");};
+    expect(code).to.throw(/string/);
+    
+  });
+
+  it("add invalid property change listener", function() {
+    var obj = new ObjectWithListeners();
+    var code = function(){obj.addPropertyChangeListener ("t", function(){});};
+    expect(code).to.throw(/Unknown property/);
+    
+  });
+
+  it("add invalid property change listener 2", function() {
+    var obj = new ObjectWithListeners();
+    obj.registerPropertyType("t");
+    var code = function(){obj.addPropertyChangeListener ("t", "not a function");};
+    expect(code).to.throw(/string/);
+    
+  });
+
+  it("re-register listener type", function() {
+    var obj = new ObjectWithListeners();
+    obj.registerListenerType("t");
+    var code = function(){obj.registerListenerType("t");};
+    expect(code).to.throw(/already registered/);
+    
+  });
+
+  it("re-register property type", function() {
+    var obj = new ObjectWithListeners();
+    obj.registerPropertyType ("t");
+    var code = function(){obj.registerPropertyType ("t");};
+    expect(code).to.throw(/already registered/);
+    
+  });
+
+  it("remove invalid listener", function() {
+    var obj = new ObjectWithListeners();
+    var name = "t";
+    var fun = function(){};
+    var code = function(){obj.removeListener(name, fun);};
+    expect(code).to.throw(/Unknown listener type/);
+    
+  });
+
+  it("remove invalid listener 2", function() {
+    var obj = new ObjectWithListeners();
+    var name = "t";
+    var fun = function(){};
+    obj.registerListenerType(name, fun);
+    var code = function(){obj.removeListener(name, "not a function");};
+    expect(code).to.throw(/string/);
+    
+  });
+
+  it("remove invalid listener 3", function() {
+    var obj = new ObjectWithListeners();
+    var name = "t";
+    var fun = function(){};
+    obj.registerListenerType(name, fun);
+    obj.removeListener(name, function(){});
+    assert.equal(logger.getWarnings().length, 1);
+    
+  });
+
+  it("remove invalid property listener", function() {
+    var obj = new ObjectWithListeners();
+    var name = "t";
+    var fun = function(){};
+    var code = function(){obj.removePropertyListener (name, fun);};
+    expect(code).to.throw(/Unknown property/);
+    
+  });
 
+  it("remove invalid property listener 2", function() {
+    var obj = new ObjectWithListeners();
+    var name = "t";
+    var fun = function(){};
+    obj.registerPropertyType(name);
+    var code = function(){obj.removePropertyListener (name, "not a function");};
+    expect(code).to.throw(/string/);
+    
+  });
+
+  it("remove invalid property listener 3", function() {
+    var obj = new ObjectWithListeners();
+    var name = "t";
+    var fun = function(){};
+    obj.registerPropertyType(name);
+    obj.removePropertyListener (name, fun);
+    assert.equal(logger.getWarnings().length, 1);
+    
+  });
+
+  it("call invalid listeners", function() {
+    var obj = new ObjectWithListeners();
+    var name = "t";
+    var code = function(){obj.callListeners(name);};
+    expect(code).to.throw(/Unknown listener/);
+    
+  });
+  it("fire invalid property change listeners", function() {
+    var obj = new ObjectWithListeners();
+    var name = "t";
+    var code = function(){obj.firePropertyChangeListener (name,"old","new");};
+    expect(code).to.throw(/Unknown property/);
+    
+  });
+
+  it("ObjectWithListeners property changes", function() {
+    var handlerCalled = 0;
+    var obj = new ObjectWithListeners();
+
+    var handler = function(e) {
+      handlerCalled++;
+    }
+
+    obj.registerPropertyType("test");
+
+    obj.addPropertyChangeListener("test", handler);
+
+    obj.firePropertyChangeListener("test", "old val", "new val");
+    assert.equal(1, handlerCalled);
+
+    obj.firePropertyChangeListener("test", "old val", "new val");
+    assert.equal(2, handlerCalled);
+
+    obj.removePropertyListener("test", handler);
+
+    obj.firePropertyChangeListener("test", "old val", "new val");
+    assert.equal(2, handlerCalled);
+  });
+});