Diffblue

Author: rieckpil

spring-boot-example/src/test/java/de/rieckpil/blog/library/BookControllerDiffblueTest.java

@@ -0,0 +1,83 @@
+package de.rieckpil.blog.library;
+
+import static org.mockito.Mockito.when;
+
+import java.awt.print.Book;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mockito;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.aot.DisabledInAotMode;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+import org.springframework.test.web.servlet.ResultActions;
+import org.springframework.test.web.servlet.request.MockHttpServletRequestBuilder;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
+import org.springframework.test.web.servlet.result.StatusResultMatchers;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+
+@ContextConfiguration(classes = {BookController.class})
+@ExtendWith(SpringExtension.class)
+@DisabledInAotMode
+class BookControllerDiffblueTest {
+  @Autowired
+  private BookController bookController;
+
+  @MockBean
+  private BookService bookService;
+
+  /**
+   * Test {@link BookController#getBookById(Long)}.
+   * <ul>
+   *   <li>Given {@link BookService} {@link BookService#findById(Long)} return {@link Book} (default constructor).</li>
+   *   <li>Then status {@link StatusResultMatchers#isOk()}.</li>
+   * </ul>
+   * <p>
+   * Method under test: {@link BookController#getBookById(Long)}
+   */
+  @Test
+  @DisplayName("Test getBookById(Long); given BookService findById(Long) return Book (default constructor); then status isOk()")
+  @Tag("MaintainedByDiffblue")
+  void testGetBookById_givenBookServiceFindByIdReturnBook_thenStatusIsOk() throws Exception {
+    // Arrange
+    when(bookService.findById(Mockito.<Long>any())).thenReturn(new Book());
+    MockHttpServletRequestBuilder requestBuilder = MockMvcRequestBuilders.get("/books/{id}", 1L);
+
+    // Act and Assert
+    MockMvcBuilders.standaloneSetup(bookController)
+      .build()
+      .perform(requestBuilder)
+      .andExpect(MockMvcResultMatchers.status().isOk())
+      .andExpect(MockMvcResultMatchers.content().contentType("application/xml;charset=UTF-8"))
+      .andExpect(MockMvcResultMatchers.content().string("<Book><numberOfPages>0</numberOfPages></Book>"));
+  }
+
+  /**
+   * Test {@link BookController#getBookById(Long)}.
+   * <ul>
+   *   <li>Given {@link BookService} {@link BookService#findById(Long)} return {@code null}.</li>
+   *   <li>Then status {@link StatusResultMatchers#isNotFound()}.</li>
+   * </ul>
+   * <p>
+   * Method under test: {@link BookController#getBookById(Long)}
+   */
+  @Test
+  @DisplayName("Test getBookById(Long); given BookService findById(Long) return 'null'; then status isNotFound()")
+  @Tag("MaintainedByDiffblue")
+  void testGetBookById_givenBookServiceFindByIdReturnNull_thenStatusIsNotFound() throws Exception {
+    // Arrange
+    when(bookService.findById(Mockito.<Long>any())).thenReturn(null);
+    MockHttpServletRequestBuilder requestBuilder = MockMvcRequestBuilders.get("/books/{id}", 1L);
+
+    // Act
+    ResultActions actualPerformResult = MockMvcBuilders.standaloneSetup(bookController).build().perform(requestBuilder);
+
+    // Assert
+    actualPerformResult.andExpect(MockMvcResultMatchers.status().isNotFound());
+  }
+}