Add tests

Issue spring-projectsgh-60

Author: sjohnr

Diff for: oauth2-authorization-server/src/test/java/org/springframework/security/oauth2/server/authorization/authentication/OAuth2TokenExchangeCompositeAuthenticationTokenTests.java

@@ -0,0 +1,66 @@
+/*
+ * Copyright 2020-2024 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.springframework.security.oauth2.server.authorization.authentication;
+
+import java.util.List;
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.security.authentication.TestingAuthenticationToken;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+
+/**
+ * Tests for {@link OAuth2TokenExchangeCompositeAuthenticationToken}.
+ *
+ * @author Steve Riesenberg
+ */
+public class OAuth2TokenExchangeCompositeAuthenticationTokenTests {
+
+	@Test
+	public void constructorWhenSubjectNullThenThrowIllegalArgumentException() {
+		// @formatter:off
+		assertThatIllegalArgumentException()
+				.isThrownBy(() -> new OAuth2TokenExchangeCompositeAuthenticationToken(null, null))
+				.withMessage("subject cannot be null");
+		// @formatter:on
+	}
+
+	@Test
+	public void constructorWhenActorsNullThenThrowIllegalArgumentException() {
+		TestingAuthenticationToken subject = new TestingAuthenticationToken("subject", null);
+		// @formatter:off
+		assertThatIllegalArgumentException()
+				.isThrownBy(() -> new OAuth2TokenExchangeCompositeAuthenticationToken(subject, null))
+				.withMessage("actors cannot be null");
+		// @formatter:on
+	}
+
+	@Test
+	public void constructorWhenRequiredParametersProvidedThenCreated() {
+		TestingAuthenticationToken subject = new TestingAuthenticationToken("subject", null);
+		OAuth2TokenExchangeActor actor1 = new OAuth2TokenExchangeActor(Map.of("claim1", "value1"));
+		OAuth2TokenExchangeActor actor2 = new OAuth2TokenExchangeActor(Map.of("claim2", "value2"));
+		List<OAuth2TokenExchangeActor> actors = List.of(actor1, actor2);
+		OAuth2TokenExchangeCompositeAuthenticationToken authentication =
+				new OAuth2TokenExchangeCompositeAuthenticationToken(subject, actors);
+		assertThat(authentication.getSubject()).isEqualTo(subject);
+		assertThat(authentication.getActors()).isEqualTo(actors);
+	}
+
+}