Java tutorial
/* * Copyright 2013-2016 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.cloud.sleuth.instrument.zuul; import org.apache.http.Header; import org.apache.http.client.methods.HttpUriRequest; import org.apache.http.client.methods.RequestBuilder; import org.junit.Test; import org.junit.runner.RunWith; import org.mockito.InjectMocks; import org.mockito.Mock; import org.mockito.runners.MockitoJUnitRunner; import org.springframework.cloud.sleuth.Span; import org.springframework.cloud.sleuth.Tracer; import static org.assertj.core.api.BDDAssertions.then; /** * @author Marcin Grzejszczak */ @RunWith(MockitoJUnitRunner.class) public class ApacheHttpClientRibbonRequestCustomizerTests { @Mock Tracer tracer; @InjectMocks ApacheHttpClientRibbonRequestCustomizer customizer; Span span = Span.builder().name("name").spanId(1L).traceId(2L).parent(3L).processId("processId").build(); @Test public void should_accept_customizer_when_apache_http_client_is_passed() throws Exception { then(this.customizer.accepts(String.class)).isFalse(); then(this.customizer.accepts(RequestBuilder.class)).isTrue(); } @Test public void should_set_not_sampled_on_the_context_when_there_is_no_span() throws Exception { RequestBuilder requestBuilder = RequestBuilder.create("GET"); this.customizer.inject(null, this.customizer.toSpanTextMap(requestBuilder)); HttpUriRequest request = requestBuilder.build(); Header header = request.getFirstHeader(Span.SAMPLED_NAME); then(header.getName()).isEqualTo(Span.SAMPLED_NAME); then(header.getValue()).isEqualTo(Span.SPAN_NOT_SAMPLED); } @Test public void should_set_tracing_headers_on_the_context_when_there_is_a_span() throws Exception { RequestBuilder requestBuilder = RequestBuilder.create("GET"); this.customizer.inject(this.span, this.customizer.toSpanTextMap(requestBuilder)); HttpUriRequest request = requestBuilder.build(); thenThereIsAHeaderWithNameAndValue(request, Span.SPAN_ID_NAME, "0000000000000001"); thenThereIsAHeaderWithNameAndValue(request, Span.TRACE_ID_NAME, "0000000000000002"); thenThereIsAHeaderWithNameAndValue(request, Span.PARENT_ID_NAME, "0000000000000003"); thenThereIsAHeaderWithNameAndValue(request, Span.PROCESS_ID_NAME, "processId"); } private void thenThereIsAHeaderWithNameAndValue(HttpUriRequest request, String name, String value) { Header header = request.getFirstHeader(name); then(header.getName()).isEqualTo(name); then(header.getValue()).isEqualTo(value); } }