Spring、Spring Boot和TestNG测试指南

测试积点老人

例子1: 使用Spring Testing工具

我们先使用@PropertySource将一个外部properties文件加载进来，PropertySourceConfig：

1. @Configuration
   
2. @PropertySource("classpath:me/chanjar/annotation/testps/ex1/property-source.properties")
   
3. public class PropertySourceConfig {
   
4. }
   
5. file: property-source.properties
   
6. foo=abc

复制代码

然后我们用@TestPropertySource覆盖了这个property:

1. @TestPropertySource(properties = { "foo=xyz" ...

复制代码

最后我们测试了是否覆盖成功（结果是成功的）：

1. @Test
   
2. public void testOverridePropertySource() {
   
3.   assertEquals(environment.getProperty("foo"), "xyz");
   
4. }

复制代码

同时我们还对@TestPropertySource做了一些其他的测试，具体情况你可以自己观察。为了方便你观察@TestPropertySource对系统环境变量和Java系统属性的覆盖效果，我们在一开始打印出了它们的值。

源代码TestPropertyTest：

1. @ContextConfiguration(classes = PropertySourceConfig.class)
   
2. @TestPropertySource(
   
3.     properties = { "foo=xyz", "bar=uvw", "PATH=aaa", "java.runtime.name=bbb" },
   
4.     locations = "classpath:me/chanjar/annotation/testps/ex1/test-property-source.properties"
   
5. )
   
6. public class TestPropertyTest extends AbstractTestNGSpringContextTests implements EnvironmentAware {
   
7. 
   
8.   private Environment environment;
   
9. 
   
10.   @Override
    
11.   public void setEnvironment(Environment environment) {
    
12.     this.environment = environment;
    
13.     Map<String, Object> systemEnvironment = ((ConfigurableEnvironment) environment).getSystemEnvironment();
    
14.     System.out.println("=== System Environment ===");
    
15.     System.out.println(getMapString(systemEnvironment));
    
16.     System.out.println();
    
17. 
    
18.     System.out.println("=== Java System Properties ===");
    
19.     Map<String, Object> systemProperties = ((ConfigurableEnvironment) environment).getSystemProperties();
    
20.     System.out.println(getMapString(systemProperties));
    
21.   }
    
22. 
    
23.   @Test
    
24.   public void testOverridePropertySource() {
    
25.     assertEquals(environment.getProperty("foo"), "xyz");
    
26.   }
    
27. 
    
28.   @Test
    
29.   public void testOverrideSystemEnvironment() {
    
30.     assertEquals(environment.getProperty("PATH"), "aaa");
    
31.   }
    
32. 
    
33.   @Test
    
34.   public void testOverrideJavaSystemProperties() {
    
35.     assertEquals(environment.getProperty("java.runtime.name"), "bbb");
    
36.   }
    
37. 
    
38.   @Test
    
39.   public void testInlineTestPropertyOverrideResourceLocationTestProperty() {
    
40.     assertEquals(environment.getProperty("bar"), "uvw");
    
41.   }
    
42. 
    
43.   private String getMapString(Map<String, Object> map) {
    
44.     return String.join("\n",
    
45.         map.keySet().stream().map(k -> k + "=" + map.get(k)).collect(toList())
    
46.     );
    
47.   }
    
48. }

复制代码

例子2: 使用Spring Boot Testing工具

@TestPropertySource也可以和@SpringBootTest一起使用。

源代码见TestPropertyTest：

1. @SpringBootTest(classes = PropertySourceConfig.class)
   
2. @TestPropertySource(
   
3.     properties = { "foo=xyz", "bar=uvw", "PATH=aaa", "java.runtime.name=bbb" },
   
4.     locations = "classpath:me/chanjar/annotation/testps/ex1/test-property-source.properties"
   
5. )
   
6. public class TestPropertyTest extends AbstractTestNGSpringContextTests implements EnvironmentAware {
   
7.   // ...
   
8. }

复制代码