@isTest private class QLMAttachmentPreviewControllerTest { static testMethod void testMethod1() { Tender_information__c Ten = new Tender_information__c(); Ten.Name = '123456'; Ten.ProjectId__c = '38_99df2844cf784982acdc61d00d7a7dbb'; insert Ten; list attachmentList = new list(); Attachment attach = new Attachment(); attach.Name = 'A-65224941-20200923--1.docx'; Blob bodyBlob = Blob.valueOf('Unit Test Attachment Body'); attach.body = bodyBlob; attach.parentId = Ten.id; attach.ContentType = 'application/pdf'; attachmentList.add(attach); // insert attach; Attachment attach1 = new Attachment(); attach1.Name = 'H-65224945-20200928--15.jpg'; Blob bodyBlob1 = Blob.valueOf('Unit Test Attachment Body'); attach1.body = bodyBlob1; attach1.parentId = Ten.id; attach1.ContentType = 'application/pdf'; attachmentList.add(attach1); insert attachmentList; PageReference page = new PageReference('/apex/QLMAttachmentPreview?parentId=' + Ten.id); System.Test.setCurrentPage(page); QLMAttachmentPreviewController apc = new QLMAttachmentPreviewController(); //初始化测试 apc.gethtmlvalue(); apc.init(); } }