build(aio): move doc-gen stuff from angular.io (#14097)

tools/docs/angular.io-package/processors/extractDecoratedClasses.spec.js

@@ -0,0 +1,48 @@
+var testPackage = require('../../helpers/test-package');
+var Dgeni = require('dgeni');
+
+describe('extractDecoratedClasses processor', function() {
+  var dgeni, injector, processor;
+
+  beforeEach(function() {
+    dgeni = new Dgeni([testPackage('angular.io-package')]);
+    injector = dgeni.configureInjector();
+    processor = injector.get('extractDecoratedClassesProcessor');
+  });
+
+  it('should extract specified decorator arguments', function() {
+    var doc1 = {
+      id: '@angular/common/ngFor',
+      name: 'ngFor',
+      docType: 'class',
+      decorators: [{
+        name: 'Directive',
+        arguments: ['{selector: \'[ng-for][ng-for-of]\', properties: [\'ngForOf\']}'],
+        argumentInfo: [{selector: '[ng-for][ng-for-of]', properties: ['ngForOf']}]
+      }]
+    };
+    var doc2 = {
+      id: '@angular/core/DecimalPipe',
+      name: 'DecimalPipe',
+      docType: 'class',
+      decorators:
+          [{name: 'Pipe', arguments: ['{name: \'number\'}'], argumentInfo: [{name: 'number'}]}]
+    };
+
+    processor.$process([doc1, doc2]);
+
+    expect(doc1).toEqual(jasmine.objectContaining({
+      id: '@angular/common/ngFor',
+      name: 'ngFor',
+      docType: 'directive',
+      directiveOptions: {selector: '[ng-for][ng-for-of]', properties: ['ngForOf']}
+    }));
+
+    expect(doc2).toEqual(jasmine.objectContaining({
+      id: '@angular/core/DecimalPipe',
+      name: 'DecimalPipe',
+      docType: 'pipe',
+      pipeOptions: {name: 'number'}
+    }));
+  });
+});