/*

* Copyright 2012-2022 The Feign 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 feign.mock;

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

import java.util.Arrays;

import java.util.Collection;

import java.util.HashMap;

import java.util.Map;

import org.junit.Test;

public class RequestHeadersTest {

@Test

public void shouldCreateEmptyRequestHeaders() {

RequestHeaders headers = RequestHeaders

.builder()

.build();

assertThat(headers.size()).isEqualTo(0);

}

@Test

public void shouldReturnZeroSizeForUnknownKey() {

RequestHeaders headers = RequestHeaders

.builder()

.build();

assertThat(headers.sizeOf("unknown")).isEqualTo(0);

}

@Test

public void shouldCreateRequestHeadersFromSingleValue() {

RequestHeaders headers = RequestHeaders

.builder()

.add("header", "val")

.add("other header", "val2")

.build();

assertThat(headers.fetch("header")).contains("val");

assertThat(headers.sizeOf("header")).isEqualTo(1);

assertThat(headers.fetch("other header")).contains("val2");

assertThat(headers.sizeOf("other header")).isEqualTo(1);

}

@Test

public void shouldCreateRequestHeadersFromSingleValueAndCollection() {

RequestHeaders headers = RequestHeaders

.builder()

.add("header", "val")

.add("other header", "val2")

.add("header", Arrays.asList("val3", "val4"))

.build();

assertThat(headers.fetch("header")).contains("val", "val3", "val4");

assertThat(headers.sizeOf("header")).isEqualTo(3);

assertThat(headers.fetch("other header")).contains("val2");

assertThat(headers.sizeOf("other header")).isEqualTo(1);

}

@Test

public void shouldCreateRequestHeadersFromHeadersMap() {

Map<String, Collection<String>> map = new HashMap<String, Collection<String>>();

map.put("header", Arrays.asList("val", "val2"));

RequestHeaders headers = RequestHeaders.of(map);

assertThat(headers.size()).isEqualTo(1);

}

@Test

public void shouldPrintHeaders() {

RequestHeaders headers = RequestHeaders

.builder()

.add("header", "val")

.add("other header", "val2")

.add("header", Arrays.asList("val3", "val4"))

.build();

assertThat(headers.toString()).isEqualTo("header=[val, val3, val4], other header=[val2]");

}

}