[英]Mock WebApplicationContext to get property in Filter junit test
I have a filter where I use some property from servlet context in its init method:我有一个过滤器,我在它的 init 方法中使用来自 servlet 上下文的一些属性:
@Override
public void init(FilterConfig filterConfig) {
prop = WebApplicationContextUtils.getRequiredWebApplicationContext(filterConfig.getServletContext()).getEnvironment().getProperty("my.property");
}
I am writing the unit test for this filter but I can't figure out how to mock WebApplicationContext to use WebApplicationContextUtils and set this property.我正在为此过滤器编写单元测试,但我不知道如何模拟 WebApplicationContext 以使用 WebApplicationContextUtils 并设置此属性。 Here's what I've tried so far:
这是我到目前为止所尝试的:
class FilterTest {
@MockBean
private FilterChain chain;
@MockBean
private WebApplicationContext webAppContextMock;
@MockBean
private HttpServletRequest httpServletRequest;
@MockBean
private HttpServletResponse httpServletResponse;
@Autowired
private MyFilter myFilter;
@Test
void doFilter() throws IOException, ServletException {
MockServletContext mockServletContext = new MockServletContext();
mockServletContext.setAttribute("my.property", "Property");
Mockito.when(WebApplicationContextUtils.getWebApplicationContext(Mockito.any(ServletContext.class))).thenReturn(webAppContextMock);
}
I am having a npe due to webApplicationContext, and I should map this servlet context to webApplicationContext.由于webApplicationContext,我有一个npe,我应该map这个servlet上下文到webApplicationContext。 What I am missing here?
我在这里缺少什么? Thanks in advance!
提前致谢!
Here the problem is getRequiredWebApplicationContext()
is a static method of class WebApplicationContextUtils and it cannot be mocked directly using JUnit.这里的问题是
getRequiredWebApplicationContext()
是 class WebApplicationContextUtils 的 static 方法,不能直接使用 JUnit 模拟。 If you really want to mock it then use power mock.如果您真的想模拟它,请使用 power mock。 https://github.com/powermock/powermock/wiki/Mockito
https://github.com/powermock/powermock/wiki/Mockito
I followed another approach for the sake of simplicity, in my filter I just removed the init part and injected Environment bean like this:为了简单起见,我采用了另一种方法,在我的过滤器中,我只是删除了 init 部分并注入了 Environment bean,如下所示:
private final Environment environment;
public MyFilter(Environment environment) {
this.environment = environment;
}
in doFilter method:在 doFilter 方法中:
String prop = environment.getProperty("my.property");
and then in my test, the filter was able to access my.property since Environment had access to it.然后在我的测试中,过滤器能够访问 my.property 因为 Environment 可以访问它。
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