Fixes

.gitignore

@@ -21,3 +21,6 @@
 
 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*
+
+.idea
+.gradle

src/main/java/com/example/DummyController.java

@@ -1,13 +1,15 @@
 package com.example;
 
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
 import reactor.core.publisher.Mono;
 
 import java.security.Principal;
 
+@RestController
 public class DummyController {
 
-    @GetMapping("/api/sayHello")
+    @GetMapping("/**")
     public Mono<String> sayHello(Mono<Principal> pM) {
         return pM
                 .map(Principal::getName)

src/test/java/com/example/FormLoginTest.java

@@ -1,92 +1,75 @@
 package com.example;
 
-import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.reactive.AutoConfigureWebTestClient;
 import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.context.ApplicationContext;
 import org.springframework.http.MediaType;
-import org.springframework.test.context.ContextConfiguration;
+import org.springframework.security.test.context.support.WithMockUser;
 import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.reactive.server.FluxExchangeResult;
 import org.springframework.test.web.reactive.server.WebTestClient;
 import org.springframework.util.LinkedMultiValueMap;
 import org.springframework.util.MultiValueMap;
 import org.springframework.web.reactive.function.BodyInserters;
 
 import java.time.Duration;
-import java.util.Arrays;
 import java.util.Collections;
 
+import static org.assertj.core.api.Assertions.assertThat;
 import static org.springframework.security.test.web.reactive.server.SecurityMockServerConfigurers.csrf;
-import static org.springframework.security.test.web.reactive.server.SecurityMockServerConfigurers.springSecurity;
-
 
+@SpringBootTest
 @RunWith(SpringRunner.class)
-@ContextConfiguration(classes = Application.class)
-@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+@AutoConfigureWebTestClient
 public class FormLoginTest {
 
     @Autowired
-    ApplicationContext context;
-
     private WebTestClient rest;
 
-    @Before
-    public void setup() {
-        this.rest = WebTestClient
-                .bindToApplicationContext(this.context)
-                .apply(springSecurity())
-                .configureClient()
-                .responseTimeout(Duration.ofDays(1))
-                .build();
-    }
-
-
     @Test
-    public void returnOwnUser() throws Exception {
-        this.formLogin("user1", "user1");
-
-        this.rest
-                .get()
-                .uri("/api/user/current")
+    public void formLoginWhenValidCredentialsThenSessionCreated() {
+        FluxExchangeResult<String> result = this.rest
+                .mutateWith(csrf())
+                .post()
+                .uri("/login")
+                .body(BodyInserters
+                        .fromFormData(new FormData("user1", "user1").toParamList()))
+                .accept(MediaType.TEXT_HTML)
                 .exchange()
-                .expectStatus().is2xxSuccessful()
-                .expectBody(String.class)
-                .isEqualTo("Hello user1!")
-        ;
+                .expectStatus().is3xxRedirection()
+                .expectHeader().valueEquals("Location", "/")
+                .returnResult(String.class);
 
-        this.rest
-                .get()
-                .uri("/logout")
-                .exchange()
-                .expectStatus().is2xxSuccessful();
+        assertThat(result.getResponseCookies().keySet()).contains("SESSION");
+    }
 
-        this.rest
-                .get()
+    @Test
+    @WithMockUser("user1")
+    public void apiWhenWithMockUserThenSaysHello() throws Exception {
+        this.rest.get()
                 .uri("/api/user/current")
                 .exchange()
-                .expectStatus().isEqualTo(403)
-        ;
-
+                .expectStatus().is2xxSuccessful()
+                .expectBody(String.class).isEqualTo("Hello user1!");
     }
 
+    @Test
+    @WithMockUser
+    public void logoutWhenSuccessThenDeletesSession() throws Exception {
 
-    private void formLogin(String user, String password) {
-        this.rest
-                .get()
-                .uri("/login")
-                .exchange()
-                .expectStatus().is2xxSuccessful();
-        this.rest
+        FluxExchangeResult<String> result = this.rest
                 .mutateWith(csrf())
                 .post()
-                .uri("/login")
-                .body(BodyInserters.fromFormData(new FormData(user, password).toParamList()))
-                .accept(MediaType.TEXT_HTML)
-                .exchange()
-                .expectStatus().is3xxRedirection()
-                .expectHeader().valueEquals("Location", "/");
+                .uri("/logout")
+                .cookie("SESSION", "any")
+                .exchange().expectStatus()
+                .is3xxRedirection().returnResult(String.class);
+
+        assertThat(result.getResponseCookies().getFirst("SESSION").getMaxAge()).isEqualTo(
+                Duration.ZERO);
+
     }
 
     public static final class FormData {