/*
 * Copyright 2013-2020 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.cloud.gateway.handler.predicate;

import java.util.function.Predicate;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

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;

/**
 * @author Andrew Fitzgerald
 */
public class CloudFoundryRouteServiceRoutePredicateFactoryTest {

	private Predicate<ServerWebExchange> predicate;

	@BeforeEach
	public void setUp() throws Exception {
		CloudFoundryRouteServiceRoutePredicateFactory factory = new CloudFoundryRouteServiceRoutePredicateFactory();
		predicate = factory.apply(factory.newConfig());
	}

	@Test
	public void itReturnsTrueWithAllHeadersPresent() {
		MockServerHttpRequest request = MockServerHttpRequest.get("someurl")
				.header(CloudFoundryRouteServiceRoutePredicateFactory.X_CF_FORWARDED_URL, "url")
				.header(CloudFoundryRouteServiceRoutePredicateFactory.X_CF_PROXY_METADATA, "metadata")
				.header(CloudFoundryRouteServiceRoutePredicateFactory.X_CF_PROXY_SIGNATURE, "signature").build();
		MockServerWebExchange exchange = MockServerWebExchange.from(request);

		assertThat(predicate.test(exchange)).isTrue();
	}

	@Test
	public void itReturnsFalseWithAHeadersMissing() {
		MockServerHttpRequest request = MockServerHttpRequest.get("someurl")
				.header(CloudFoundryRouteServiceRoutePredicateFactory.X_CF_FORWARDED_URL, "url")
				.header(CloudFoundryRouteServiceRoutePredicateFactory.X_CF_PROXY_METADATA, "metadata").build();
		MockServerWebExchange exchange = MockServerWebExchange.from(request);

		assertThat(predicate.test(exchange)).isFalse();
	}

	@Test
	public void itReturnsFalseWithNoHeaders() {
		MockServerHttpRequest request = MockServerHttpRequest.get("someurl").build();
		MockServerWebExchange exchange = MockServerWebExchange.from(request);

		assertThat(predicate.test(exchange)).isFalse();
	}

}
