HelloControllerTest.java

package dev.danvega.quickstart.controller;

import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
import org.springframework.test.context.junit.jupiter.SpringExtension;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;
import org.springframework.test.web.servlet.RequestBuilder;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

@ExtendWith(SpringExtension.class)
@WebMvcTest(HelloController.class)
public class HelloControllerIntTest {

    @Autowired
    private MockMvc mvc;

    @Test
    public void testHelloEndpointWithDefaultName() throws Exception {
        RequestBuilder request = get("/hello");
        MvcResult result = mvc.perform(request).andReturn();
        assertEquals("Hello, World", result.getResponse().getContentAsString());
    }

    @Test
    public void testHelloWithName() throws Exception {
        mvc.perform(get("/hello?name=Dan"))
                .andExpect(status().isOk())
                .andExpect(content().string("Hello, Dan"))
                .andReturn();
    }
}