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SAXDecoderTest.java
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162 lines (140 loc) · 5.32 KB
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/**
* Copyright 2012-2018 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.sax;
import feign.Request;
import feign.Request.HttpMethod;
import feign.Util;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.xml.sax.helpers.DefaultHandler;
import java.io.IOException;
import java.text.ParseException;
import java.util.Collection;
import java.util.Collections;
import feign.Response;
import feign.codec.Decoder;
import static feign.Util.UTF_8;
import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
public class SAXDecoderTest {
static String statusFailed = ""//
+ "<soap:Envelope xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">\n"
//
+ " <soap:Body>\n"//
+ " <ns1:getNeustarNetworkStatusResponse xmlns:ns1=\"http://webservice.api.ultra.neustar.com/v01/\">\n"
//
+ " <NeustarNetworkStatus xmlns:ns2=\"http://schema.ultraservice.neustar.com/v01/\">Failed</NeustarNetworkStatus>\n"
//
+ " </ns1:getNeustarNetworkStatusResponse>\n"//
+ " </soap:Body>\n"//
+ "</soap:Envelope>";
@Rule
public final ExpectedException thrown = ExpectedException.none();
Decoder decoder = SAXDecoder.builder() //
.registerContentHandler(NetworkStatus.class,
new SAXDecoder.ContentHandlerWithResult.Factory<NetworkStatus>() {
@Override
public SAXDecoder.ContentHandlerWithResult<NetworkStatus> create() {
return new NetworkStatusHandler();
}
}) //
.registerContentHandler(NetworkStatusStringHandler.class) //
.build();
@Test
public void parsesConfiguredTypes() throws ParseException, IOException {
assertEquals(NetworkStatus.FAILED, decoder.decode(statusFailedResponse(), NetworkStatus.class));
assertEquals("Failed", decoder.decode(statusFailedResponse(), String.class));
}
@Test
public void niceErrorOnUnconfiguredType() throws ParseException, IOException {
thrown.expect(IllegalStateException.class);
thrown.expectMessage("type int not in configured handlers");
decoder.decode(statusFailedResponse(), int.class);
}
private Response statusFailedResponse() {
return Response.builder()
.status(200)
.reason("OK")
.request(Request.create(HttpMethod.GET, "/api", Collections.emptyMap(), null, Util.UTF_8))
.headers(Collections.<String, Collection<String>>emptyMap())
.body(statusFailed, UTF_8)
.build();
}
@Test
public void nullBodyDecodesToNull() throws Exception {
Response response = Response.builder()
.status(204)
.reason("OK")
.request(Request.create(HttpMethod.GET, "/api", Collections.emptyMap(), null, Util.UTF_8))
.headers(Collections.<String, Collection<String>>emptyMap())
.build();
assertNull(decoder.decode(response, String.class));
}
/** Enabled via {@link feign.Feign.Builder#decode404()} */
@Test
public void notFoundDecodesToEmpty() throws Exception {
Response response = Response.builder()
.status(404)
.reason("NOT FOUND")
.request(Request.create(HttpMethod.GET, "/api", Collections.emptyMap(), null, Util.UTF_8))
.headers(Collections.<String, Collection<String>>emptyMap())
.build();
assertThat((byte[]) decoder.decode(response, byte[].class)).isEmpty();
}
static enum NetworkStatus {
GOOD, FAILED;
}
static class NetworkStatusStringHandler extends DefaultHandler implements
SAXDecoder.ContentHandlerWithResult<String> {
private StringBuilder currentText = new StringBuilder();
private String status;
@Override
public String result() {
return status;
}
@Override
public void endElement(String uri, String name, String qName) {
if (qName.equals("NeustarNetworkStatus")) {
this.status = currentText.toString().trim();
}
currentText = new StringBuilder();
}
@Override
public void characters(char ch[], int start, int length) {
currentText.append(ch, start, length);
}
}
static class NetworkStatusHandler extends DefaultHandler implements
SAXDecoder.ContentHandlerWithResult<NetworkStatus> {
private StringBuilder currentText = new StringBuilder();
private NetworkStatus status;
@Override
public NetworkStatus result() {
return status;
}
@Override
public void endElement(String uri, String name, String qName) {
if (qName.equals("NeustarNetworkStatus")) {
this.status = NetworkStatus.valueOf(currentText.toString().trim().toUpperCase());
}
currentText = new StringBuilder();
}
@Override
public void characters(char ch[], int start, int length) {
currentText.append(ch, start, length);
}
}
}