Unit testing

Let's quickly write a unit test for the preceding method. We will want to pass a name as a part of the URI and check whether the response contains the name. The following code shows how we can do that:

    @Test
    fun `GET welcome-with-parameter returns "Hello World, Buddy"`() {
      mvc.perform(
      MockMvcRequestBuilders.get(
      "/welcome-with-parameter/name/Buddy")
     .accept(MediaType.APPLICATION_JSON))
     .andExpect(status().isOk())
     .andExpect(content().string(
     containsString("Hello World, Buddy")));
    }

A few important things to note are as follows:

  • MockMvcRequestBuilders.get("/welcome-with-parameter/name/Buddy"): This matches against the variable template in the URI. We will pass in the name, .
  • .andExpect(content().string(containsString("Hello World, Buddy"))): We expect the response to contain the message with the name.
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