/*
 * Copyright 2002-2013 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.frameoptions;

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

import org.junit.Before;
import org.junit.Test;
import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.security.web.header.writers.frameoptions.AbstractRequestParameterAllowFromStrategy;

/**
 * @author Rob Winch
 *
 */
public class AbstractRequestParameterAllowFromStrategyTests {
	private MockHttpServletRequest request;

	@Before
	public void setup() {
		request = new MockHttpServletRequest();
	}

	@Test
	public void nullAllowFromParameterValue() {
		RequestParameterAllowFromStrategyStub strategy = new RequestParameterAllowFromStrategyStub(
				true);

		assertThat(strategy.getAllowFromValue(request)).isEqualTo("DENY");
	}

	@Test
	public void emptyAllowFromParameterValue() {
		request.setParameter("x-frames-allow-from", "");
		RequestParameterAllowFromStrategyStub strategy = new RequestParameterAllowFromStrategyStub(
				true);

		assertThat(strategy.getAllowFromValue(request)).isEqualTo("DENY");
	}

	@Test
	public void emptyAllowFromCustomParameterValue() {
		String customParam = "custom";
		request.setParameter(customParam, "");
		RequestParameterAllowFromStrategyStub strategy = new RequestParameterAllowFromStrategyStub(
				true);
		strategy.setAllowFromParameterName(customParam);

		assertThat(strategy.getAllowFromValue(request)).isEqualTo("DENY");
	}

	@Test
	public void allowFromParameterValueAllowed() {
		String value = "https://example.com";
		request.setParameter("x-frames-allow-from", value);
		RequestParameterAllowFromStrategyStub strategy = new RequestParameterAllowFromStrategyStub(
				true);

		assertThat(strategy.getAllowFromValue(request)).isEqualTo(value);
	}

	@Test
	public void allowFromParameterValueDenied() {
		String value = "https://example.com";
		request.setParameter("x-frames-allow-from", value);
		RequestParameterAllowFromStrategyStub strategy = new RequestParameterAllowFromStrategyStub(
				false);

		assertThat(strategy.getAllowFromValue(request)).isEqualTo("DENY");
	}

	private static class RequestParameterAllowFromStrategyStub extends
			AbstractRequestParameterAllowFromStrategy {
		private boolean match;

		RequestParameterAllowFromStrategyStub(boolean match) {
			this.match = match;
		}

		@Override
		protected boolean allowed(String allowFromOrigin) {
			return match;
		}
	}
}
