Add support for Feature-Policy security header

web/src/test/java/org/springframework/security/web/header/writers/FeaturePolicyHeaderWriterTests.java

@@ -0,0 +1,73 @@
+/*
+ * Copyright 2002-2018 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
+ *
+ *      http://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.web.header.writers;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import org.springframework.mock.web.MockHttpServletRequest;
+import org.springframework.mock.web.MockHttpServletResponse;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
+/**
+ * Tests for {@link FeaturePolicyHeaderWriter}.
+ *
+ * @author Vedran Pavic
+ */
+public class FeaturePolicyHeaderWriterTests {
+
+	private static final String DEFAULT_POLICY_DIRECTIVES = "geolocation 'self'";
+
+	private MockHttpServletRequest request;
+
+	private MockHttpServletResponse response;
+
+	private FeaturePolicyHeaderWriter writer;
+
+	@Before
+	public void setUp() {
+		this.request = new MockHttpServletRequest();
+		this.response = new MockHttpServletResponse();
+		this.writer = new FeaturePolicyHeaderWriter(DEFAULT_POLICY_DIRECTIVES);
+	}
+
+	@Test
+	public void writeHeadersFeaturePolicyDefault() {
+		writer.writeHeaders(this.request, this.response);
+
+		assertThat(this.response.getHeaderNames()).hasSize(1);
+		assertThat(this.response.getHeader("Feature-Policy"))
+				.isEqualTo(DEFAULT_POLICY_DIRECTIVES);
+	}
+
+	@Test
+	public void createWriterWithNullDirectivesShouldThrowException() {
+		assertThatThrownBy(() -> new FeaturePolicyHeaderWriter(null))
+				.isInstanceOf(IllegalArgumentException.class)
+				.hasMessage("policyDirectives must not be null or empty");
+	}
+
+	@Test
+	public void createWriterWithEmptyDirectivesShouldThrowException() {
+		assertThatThrownBy(() -> new FeaturePolicyHeaderWriter(""))
+				.isInstanceOf(IllegalArgumentException.class)
+				.hasMessage("policyDirectives must not be null or empty");
+	}
+
+}