What are some examples of using MockMvc in Spring?

Can you give me some examples of using MockMvc in a Spring application?

Sure! MockMvc is a powerful tool for testing Spring MVC applications. For example, you can test a controller like this:

@Test
public void testGetUser() throws Exception {
    mockMvc.perform(get("/users/1"))
           .andExpect(status().isOk())
           .andExpect(jsonPath("$.name").value("John Doe"));
}

What does the jsonPath method do in that example?

The jsonPath method is used to assert that a specific JSON field in the response matches the expected value. In this case, it checks if the name of the user is 'John Doe'.

Can I test POST requests with MockMvc?

Absolutely! You can test POST requests by using the post method. Here's an example:

@Test
public void testCreateUser() throws Exception {
    String userJson = "{\"name\": \"Jane Doe\"}";
    mockMvc.perform(post("/users")
           .contentType(MediaType.APPLICATION_JSON)
           .content(userJson))
           .andExpect(status().isCreated());
}