/*
 * Copyright 2002-2019 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.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.mock.web.MockHttpServletResponse;
import org.springframework.security.web.header.writers.ClearSiteDataHeaderWriter.Directive;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;

/**
 * @author Rafiullah Hamedy
 * @author Josh Cummings
 * @see ClearSiteDataHeaderWriter
 */
public class ClearSiteDataHeaderWriterTests {

	private static final String HEADER_NAME = "Clear-Site-Data";

	private MockHttpServletRequest request;

	private MockHttpServletResponse response;

	@BeforeEach
	public void setup() {
		this.request = new MockHttpServletRequest();
		this.request.setSecure(true);
		this.response = new MockHttpServletResponse();
	}

	@Test
	public void createInstanceWhenMissingSourceThenThrowsException() {
		assertThatExceptionOfType(Exception.class).isThrownBy(() -> new ClearSiteDataHeaderWriter())
				.withMessage("directives cannot be empty or null");
	}

	@Test
	public void writeHeaderWhenRequestNotSecureThenHeaderIsNotPresent() {
		this.request.setSecure(false);
		ClearSiteDataHeaderWriter headerWriter = new ClearSiteDataHeaderWriter(Directive.CACHE);
		headerWriter.writeHeaders(this.request, this.response);
		assertThat(this.response.getHeader(HEADER_NAME)).isNull();
	}

	@Test
	public void writeHeaderWhenRequestIsSecureThenHeaderValueMatchesPassedSource() {
		ClearSiteDataHeaderWriter headerWriter = new ClearSiteDataHeaderWriter(Directive.STORAGE);
		headerWriter.writeHeaders(this.request, this.response);
		assertThat(this.response.getHeader(HEADER_NAME)).isEqualTo("\"storage\"");
	}

	@Test
	public void writeHeaderWhenRequestIsSecureThenHeaderValueMatchesPassedSources() {
		ClearSiteDataHeaderWriter headerWriter = new ClearSiteDataHeaderWriter(Directive.CACHE, Directive.COOKIES,
				Directive.STORAGE, Directive.EXECUTION_CONTEXTS);
		headerWriter.writeHeaders(this.request, this.response);
		assertThat(this.response.getHeader(HEADER_NAME))
				.isEqualTo("\"cache\", \"cookies\", \"storage\", \"executionContexts\"");
	}

}
