Add Magic Link Sample

Closes gh-312

servlet/spring-boot/java/authentication/one-time-token/magic-link/src/test/java/org/example/magiclink/MagicLinkApplicationTests.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright 2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.example.magiclink;
+
+import jakarta.mail.internet.MimeMessage;
+import com.icegreen.greenmail.junit5.GreenMailExtension;
+import com.icegreen.greenmail.util.GreenMailUtil;
+import com.icegreen.greenmail.util.ServerSetupTest;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+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 org.springframework.web.util.UriComponents;
+import org.springframework.web.util.UriComponentsBuilder;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.csrf;
+import static org.springframework.security.test.web.servlet.response.SecurityMockMvcResultMatchers.authenticated;
+import static org.springframework.security.test.web.servlet.response.SecurityMockMvcResultMatchers.unauthenticated;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.redirectedUrl;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+@AutoConfigureMockMvc
+class MagicLinkApplicationTests {
+
+	@RegisterExtension
+	static GreenMailExtension greenMail = new GreenMailExtension(ServerSetupTest.SMTP);
+
+	@Autowired
+	MockMvc mockMvc;
+
+	@Test
+	void ottLoginWhenUserExistsThenSendEmailAndAuthenticate() throws Exception {
+		this.mockMvc.perform(post("/ott/generate").param("username", "user").with(csrf()))
+			.andExpectAll(status().isFound(), redirectedUrl("/ott/sent"));
+
+		greenMail.waitForIncomingEmail(1);
+		MimeMessage receivedMessage = greenMail.getReceivedMessages()[0];
+		String content = GreenMailUtil.getBody(receivedMessage);
+		String url = content.split(": ")[1];
+		UriComponents uriComponents = UriComponentsBuilder.fromUriString(url).build();
+		String token = uriComponents.getQueryParams().get("token").get(0);
+
+		assertThat(token).isNotEmpty();
+
+		this.mockMvc.perform(post("/login/ott").param("token", token).with(csrf()))
+			.andExpectAll(status().isFound(), redirectedUrl("/"), authenticated());
+	}
+
+	@Test
+	void ottLoginWhenInvalidTokenThenFails() throws Exception {
+		this.mockMvc.perform(post("/ott/generate").param("username", "user").with(csrf()))
+			.andExpectAll(status().isFound(), redirectedUrl("/ott/sent"));
+
+		String token = "1234;";
+
+		this.mockMvc.perform(post("/login/ott").param("token", token).with(csrf()))
+			.andExpectAll(status().isFound(), redirectedUrl("/login?error"), unauthenticated());
+	}
+
+}

servlet/spring-boot/java/authentication/one-time-token/magic-link/src/test/resources/application.yml

@@ -0,0 +1,6 @@
+spring:
+  config:
+    import: classpath:application.yml
+  mail:
+    port: 3025
+    host: localhost