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[FAQ]JUnit测试前置行为
引用Kent Beck, Erich Gamma，连接地址：http://junit.sourceforge.net/doc/cookbook/cookbook.htm
What if you have two or more tests that operate on the same or similar sets of objects?
Tests need to run against the background of a known set of objects. This set of objects is called a test fixture. When you are writing tests you will often find that you spend more time writing the code to set up the fixture than you do in actually testing values.
To some extent, you can make writing the fixture code easier by paying careful attention to the constructors you write. However, a much bigger savings comes from sharing fixture code. Often, you will be able to use the same fixture for several different tests. Each case will send slightly different messages or parameters to the fixture and will check for different results.
When you have a common fixture, here is what you do:
1.Create a subclass of TestCase
2.Create a constructor which accepts a String as a parameter and passes it to the superclass.
3.Add an instance variable for each part of the fixture
4.Override setUp() to initialize the variables
5.Override tearDown() to release any permanent resources you allocated in setUp
For example, to write several test cases that want to work with different combinations of 12 Swiss Francs, 14 Swiss Francs, and 28 US Dollars, first create a fixture:
public class MoneyTest extends TestCase {
private Money f12CHF;
private Money f14CHF;
private Money f28USD;
protected void setUp() {
f12CHF= new Money(12, "CHF");
f14CHF= new Money(14, "CHF");
f28USD= new Money(28, "USD");
}
}
Once you have the Fixture in place, you can write as many Test Cases as you'd like.
[ 此贴被Fastpoint在2005-10-17 11:00重新编辑 ]
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即使千多百个深夜曾在梦境内
我有吻过你这毕竟并没存在
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无谓要你惹上各种问题
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[楼 主]
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Posted: 2005-10-14 19:18 |
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软件测试基地论坛 -> 新手园地 -> [FAQ]JUnit测试前置行为
