Added Spring Tet

Author: nilandev

01-testing-spring-boot/src/main/java/com/stacktips/movies/api/MovieController.java

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+package com.stacktips.movies.api;
+
+import com.stacktips.movies.service.GreetingService;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class GreetingController {
+
+    private final GreetingService greetingService;
+
+    public GreetingController(GreetingService greetingService) {
+        this.greetingService = greetingService;
+    }
+
+    @RequestMapping("/")
+    public String greeting() {
+        return greetingService.greet();
+    }
+}

01-testing-spring-boot/src/main/java/com/stacktips/movies/service/MovieService.java

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+package com.stacktips.movies.service;
+
+import org.springframework.stereotype.Service;
+
+@Service
+public class GreetingService {
+    public String greet() {
+        return "Hello, World!";
+    }
+}

01-testing-spring-boot/src/test/java/com/stacktips/movies/api/GreetingControllerTest.java

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+package com.stacktips.movies.api;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.web.servlet.MockMvc;
+
+import static org.hamcrest.Matchers.containsString;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+@AutoConfigureMockMvc
+class GreetingControllerUsingMockMvcTest {
+
+    @Autowired
+    MockMvc mockMvc;
+
+    @Test
+    void greetingShouldReturnDefaultMessage() throws Exception {
+        this.mockMvc.perform(get("/"))
+                .andDo(print())
+                .andExpect(status().isOk())
+                .andExpect(content().string(containsString("Hello, World")));
+    }
+
+}

01-testing-spring-boot/src/test/java/com/stacktips/movies/api/GreetingControllerWithSpringContextTest.java

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+package com.stacktips.movies.api;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.boot.test.web.server.LocalServerPort;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+import static org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+
+@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
+class GreetingsControllerTest {
+
+    @LocalServerPort
+    private int port;
+
+    @Autowired
+    private TestRestTemplate restTemplate;
+
+    @Test
+    void greetingShouldReturnDefaultMessage() throws Exception {
+        String result = this.restTemplate.getForObject("http://localhost:" + port + "/",
+                String.class);
+        assertThat(result, is("Hello, World"));
+    }
+
+}

01-testing-spring-boot/src/test/java/com/stacktips/movies/api/MovieControllerTest.java

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+package com.stacktips.movies.api;
+
+import com.stacktips.movies.service.MovieService;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.test.web.servlet.MockMvc;
+
+import static org.hamcrest.Matchers.containsString;
+import static org.mockito.Mockito.when;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+@AutoConfigureMockMvc
+class GreetingControllerTest {
+
+    @Autowired
+    MockMvc mockMvc;
+
+    @MockBean
+    private MovieService movieService;
+
+    @Test
+    void greetingShouldReturnMockResponse() throws Exception {
+        when(movieService.greet()).thenReturn("Hello, Spring Boot!");
+
+        this.mockMvc.perform(get("/"))
+                .andDo(print())
+                .andExpect(status().isOk())
+                .andExpect(content().string(containsString("Hello, Spring Boot!")));
+    }
+
+}