Question

我对编码相对缺乏经验，之前从未被迫编写测试类。我从概念上不理解它。我写了以下触发器：

trigger CreateNewInvoiceAndUpdateCM on CampaignMember(after insert, after update){
for (CampaignMember cm: trigger.new){

    if(cm.Status == 'Needs Renewal and Invoice'){
        Asset memb = [SELECT Id, Product2Id FROM Asset WHERE Id = :cm.Membership__c];
        Product2 prod = [SELECT Id, ProductCode FROM Product2 WHERE Id = :memb.Product2Id];
        Pricebook2 pb =[SELECT Id, Name FROM Pricebook2 WHERE Name = 'Standard Price Book'];
        PricebookEntry pbe = [SELECT Id, UnitPrice, Pricebook2Id, Product2Id FROM PricebookEntry WHERE Pricebook2Id = :pb.Id AND Product2Id = :prod.Id];

        Invoice__c inv = new Invoice__c();
        inv.Membership__c = cm.Membership__c;
        inv.Contact__c = cm.ContactId;
        inv.Price__c = pbe.UnitPrice;
        insert inv;



        CampaignMember newCm = [select Id, Invoice__c FROM CampaignMember WHERE Id = :cm.Id];
        newCm.Invoice__c = inv.Id;
        newCM.Status = 'Needs Renewal';
        update newCm;

        }}
        }

但后来我不知道如何正确编写测试类。我已经浏览了Salesforce网站上的所有文档以及这里的无数帖子，但是我未能从13％（2/15）获得我的代码覆盖率[这意味着什么是btw？]。

我编写的测试类基本上只是尝试将所有内容都放在那里，希望代码覆盖率会上升。我不知道我实际应该在测试类中做些什么：

@isTest 

private class testCreateNewInvoiceAndUpdateCM{

static testMethod void testCreateNewInvoiceAndUpdateCM(){

PricebookEntry pbe = new PriceBookEntry();
pbe.UnitPrice = 2;

Campaign camp = new Campaign();
camp.Name = 'Test Campaign';
insert camp;

Account acc = new Account();
acc.Name ='Test Account';
insert acc;

Contact cont= new Contact();
cont.LastName = 'LastName';
cont.AccountId = acc.Id;
insert cont;


Asset ass = new Asset();
ass.Name = 'Test Asset';
ass.Membership_Start_Date__c = System.today();
ass.ContactId = cont.Id;
ass.AccountId = ass.Id;
insert ass;

Invoice__c inv = new Invoice__c();
inv.Membership__c = ass.Id;
inv.Contact__c = cont.Id;
inv.Price__c = pbe.UnitPrice;
insert inv;

CampaignMember cm = new CampaignMember(); 
cm.CampaignId = camp.Id;
cm.ContactId = cont.Id;
cm.Membership__c = ass.Id;
cm.Status = 'Needs Renewal and Invoice';
cm.Invoice__c = Inv.Id;

insert cm;


CampaignMember cm2 = [select Id, Status, Invoice__c  from CampaignMember where Id = :cm.Id];
System.assertEquals('Needs Renewal and Invoice',cm.Status);







   }
}

任何人都可以帮助我取悦它让我疯了吗？

Answer 1

在编写测试类之前，需要重写触发器。你永远不会在for循环中查询。您还应该使用连接最小化查询数。您应该查看apex最佳实践指南。从这里开始：

http://wiki.developerforce.com/page/Apex_Code_Best_Practices

Answer 2

（2/15）表示15行中（你的触发器中的2行）通过了测试，你还有13行测试，这意味着你的测试类代码没有覆盖那13行。你可以指定你的触发器的哪两行通过测试吗？这肯定有助于了解你的问题更好。

触发器的Apex测试类 - 初学者指南

2 个答案: