Automation test

Automation Test余昭辉

2011.10

I’m a…

Developer(C#, Java, Scala…) Blogger(http://yuyijq.cnblogs.com) Microsoft MVP(C#)

I like… CLR, JVM OO, Design Pattern, Clean Code Agile(TDD, Code Review, Pair

Programming, etc)

Tools

jUnit

Test Fixture BeforeClass, AfterClass, Before,

After, assumeThat, Group Tests Extensions

DbUnit, jsonAssert Hamcres

Matchers More expression Friendly assert result

Mock

Mockito jMock easyMock MockObjects

Spring test

MockHttpServletRequest MockHttpServletResponse MockHttpSession MockServletConfig MockServletContext … ModelAndViewAssert

Selenium + WebDriver

driver.get(“http://www.qunar.com”) driver.findElement(By.id(“login”)).click(

); …

BDD(Cucumber)

How to manage test cases? The relation between test cases and

test code. QA and Dev

Principles

Test is a feedback mechanism

Run fast Run after each modified Run before check-in …

Test triangle

Functional

Tests

Integration Tests

Unit Tests

State-based assert over behavior-based assert

assertThat(service.findById(1),is(expected))

verify(service,times(1)).findById(1);

assertThat over assertXxx

Self description Different parameter type

Test behavior, not methods

One behavior, one test Not one method many tests One test one assert(*)

Test method name is important

Test method is document Give your intent:

testFindById is not a good name should_find_agent_by_id is better TestDox rule

Test data builder

Agent agent = new AgentBuilder().build();

Repeat run

Don’t modified database, transaction Prepare data itself, or write fixture

Test code is as important as product code

We should extract duplicate code to method

We should use good names …

Add test at:

If you want to add println to get debug info

If you find a bug, write a test first

Test as singal

It’s very difficult to test Three steps:

Given When Then

Test private methods

Demo

Remember

Automated test can’t avoid bugs Even it can’t help you find bugs But it can avoid introduce bugs But…

Thank you