give doclets a longname even if the name is empty (#643)

lib/jsdoc/name.js

@@ -144,6 +144,11 @@ exports.resolve = function(doclet) {
     if (about.variation) {
         doclet.variation = about.variation;
     }
+
+    // if we never found a longname, just use an empty string
+    if (!doclet.longname) {
+        doclet.longname = '';
+    }
 };
 
 /**

test/fixtures/classwithoutname.js

@@ -0,0 +1,9 @@
+// JSDoc should not be able to identify the name of this class.
+
+var MyClass = Class.define({
+    /**
+     * Create an instance of MyClass.
+     * @constructs
+     */
+    initialize: function() {}
+});

test/specs/documentation/classwithoutname.js

@@ -0,0 +1,14 @@
+/*global describe, expect, it, jasmine */
+describe('class without a name', function() {
+	var docSet = jasmine.getDocSetFromFile('test/fixtures/classwithoutname.js').doclets
+		.filter(function(doclet) {
+			return doclet.name === '';
+		});
+
+	it('When the doclet for a class has an empty name, it should also have an empty longname', function() {
+		expect(docSet).toBeDefined();
+		expect(docSet.length).toBe(1);
+		expect(docSet[0].description).toBe('Create an instance of MyClass.');
+		expect(docSet[0].longname).toBe('');
+	});
+});