/*
 * ============LICENSE_START=======================================================
 * VES
 * ================================================================================
 * Copyright (C) 2020 Nokia. All rights reserved.s
 * ================================================================================
 * 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.
 * ============LICENSE_END=========================================================
 */
package org.onap.dcae.common;

import org.junit.Test;
import org.springframework.http.HttpHeaders;
import org.springframework.mock.web.MockHttpServletRequest;

import java.util.Map;

import static java.util.Map.entry;
import static org.assertj.core.api.Assertions.assertThat;

public class HeaderUtilsTest {
    private HeaderUtils headerUtils = new HeaderUtils();

    @Test
    public void shouldReturnEventListenerRestApiIdentifier() {
        assertThat(
                headerUtils.getRestApiIdentify("http://localhost/eventListener/v2/eventListener")
        ).isEqualTo("eventListener");
    }

    @Test
    public void shouldReturnBatchEventRestApiIdentifier() {
        assertThat(
                headerUtils.getRestApiIdentify("http://localhost/eventListener/v2/eventBatch")
        ).isEqualTo("eventListener_eventBatch");
    }

    @Test
    public void shouldExtractHeadersFromRequest() {
        // given
        final MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
        httpServletRequest.addHeader("first", 1);
        httpServletRequest.addHeader("second", 2);
        // when/then
        assertThat(
                headerUtils.extractHeaders(httpServletRequest)
        ).contains(
                entry("first", "1"),
                entry("second", "2")
        );
    }

    @Test
    public void shouldCreateHttpHeaderWithSelectedData() {
        // given
        Map<String, String> data = Map.of("first", "1", "second", "2");
        // when
        final HttpHeaders httpHeaders = headerUtils.fillHeaders(data);
        //then
        assertThatHeaderContainsElement(httpHeaders, "first", "1");
        assertThatHeaderContainsElement(httpHeaders, "second", "2");
    }

    private void assertThatHeaderContainsElement(HttpHeaders httpHeaders, String key, String value) {
        assertThat(httpHeaders.containsKey(key)).isTrue();
        assertThat(httpHeaders.get(key)).contains(value);
    }

}