Add permissionsPolicy http header

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

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2002-2020 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.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.assertThatIllegalArgumentException;
+
+/**
+ * Tests for {@link PermissionsPolicyHeaderWriter}.
+ *
+ * @author Christophe Gilles
+ */
+public class PermissionsPolicyHeaderWriterTests {
+
+	private static final String DEFAULT_POLICY_DIRECTIVES = "geolocation=(self)";
+
+	private MockHttpServletRequest request;
+
+	private MockHttpServletResponse response;
+
+	private PermissionsPolicyHeaderWriter writer;
+
+	private static final String PERMISSIONS_POLICY_HEADER = "Permissions-Policy";
+
+	@Before
+	public void setUp() {
+		this.request = new MockHttpServletRequest();
+		this.response = new MockHttpServletResponse();
+		this.writer = new PermissionsPolicyHeaderWriter(DEFAULT_POLICY_DIRECTIVES);
+	}
+
+	@Test
+	public void writeHeadersPermissionsPolicyDefault() {
+		this.writer.writeHeaders(this.request, this.response);
+		assertThat(this.response.getHeaderNames()).hasSize(1);
+		assertThat(this.response.getHeader("Permissions-Policy")).isEqualTo(DEFAULT_POLICY_DIRECTIVES);
+	}
+
+	@Test
+	public void createWriterWithNullPolicyShouldThrowException() {
+		assertThatIllegalArgumentException().isThrownBy(() -> new PermissionsPolicyHeaderWriter(null))
+				.withMessage("policy can not be null or empty");
+	}
+
+	@Test
+	public void createWriterWithEmptyPolicyShouldThrowException() {
+		assertThatIllegalArgumentException().isThrownBy(() -> new PermissionsPolicyHeaderWriter(""))
+				.withMessage("policy can not be null or empty");
+	}
+
+	@Test
+	public void writeHeaderOnlyIfNotPresent() {
+		String value = new String("value");
+		this.response.setHeader(PERMISSIONS_POLICY_HEADER, value);
+		this.writer.writeHeaders(this.request, this.response);
+		assertThat(this.response.getHeader(PERMISSIONS_POLICY_HEADER)).isSameAs(value);
+	}
+
+}

web/src/test/java/org/springframework/security/web/server/header/PermissionsPolicyServerHttpHeadersWriterTests.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright 2002-2020 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.web.server.header;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.mock.http.server.reactive.MockServerHttpRequest;
+import org.springframework.mock.web.server.MockServerWebExchange;
+import org.springframework.web.server.ServerWebExchange;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link PermissionsPolicyServerHttpHeadersWriter}.
+ *
+ * @author Christophe Gilles
+ */
+public class PermissionsPolicyServerHttpHeadersWriterTests {
+
+	private static final String DEFAULT_POLICY_DIRECTIVES = "geolocation=(self)";
+
+	private ServerWebExchange exchange;
+
+	private PermissionsPolicyServerHttpHeadersWriter writer;
+
+	@Before
+	public void setup() {
+		this.exchange = MockServerWebExchange.from(MockServerHttpRequest.get("/"));
+		this.writer = new PermissionsPolicyServerHttpHeadersWriter();
+	}
+
+	@Test
+	public void writeHeadersWhenUsingDefaultsThenDoesNotWrite() {
+		this.writer.writeHttpHeaders(this.exchange);
+		HttpHeaders headers = this.exchange.getResponse().getHeaders();
+		assertThat(headers).isEmpty();
+	}
+
+	@Test
+	public void writeHeadersWhenUsingPolicyThenWritesPolicy() {
+		this.writer.setPolicy(DEFAULT_POLICY_DIRECTIVES);
+		this.writer.writeHttpHeaders(this.exchange);
+		HttpHeaders headers = this.exchange.getResponse().getHeaders();
+		assertThat(headers).hasSize(1);
+		assertThat(headers.get(PermissionsPolicyServerHttpHeadersWriter.PERMISSIONS_POLICY))
+				.containsOnly(DEFAULT_POLICY_DIRECTIVES);
+	}
+
+	@Test
+	public void writeHeadersWhenAlreadyWrittenThenWritesHeader() {
+		this.writer.setPolicy(DEFAULT_POLICY_DIRECTIVES);
+		String headerValue = "camera=(self)";
+		this.exchange.getResponse().getHeaders().set(PermissionsPolicyServerHttpHeadersWriter.PERMISSIONS_POLICY,
+				headerValue);
+		this.writer.writeHttpHeaders(this.exchange);
+		HttpHeaders headers = this.exchange.getResponse().getHeaders();
+		assertThat(headers).hasSize(1);
+		assertThat(headers.get(PermissionsPolicyServerHttpHeadersWriter.PERMISSIONS_POLICY)).containsOnly(headerValue);
+	}
+
+}