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143 lines (124 loc) · 4.77 KB
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/**
* Copyright 2012-2020 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.codec;
import static feign.Util.RETRY_AFTER;
import static feign.Util.UTF_8;
import static org.assertj.core.api.Assertions.assertThat;
import feign.FeignException;
import feign.Request;
import feign.Request.HttpMethod;
import feign.Response;
import feign.Util;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.Map;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
@SuppressWarnings("deprecation")
public class DefaultErrorDecoderTest {
@Rule
public final ExpectedException thrown = ExpectedException.none();
private ErrorDecoder errorDecoder = new ErrorDecoder.Default();
private Map<String, Collection<String>> headers = new LinkedHashMap<>();
@Test
public void throwsFeignException() throws Throwable {
thrown.expect(FeignException.class);
thrown.expectMessage("[500 Internal server error] during [GET] to [/api] [Service#foo()]: []");
Response response = Response.builder()
.status(500)
.reason("Internal server error")
.request(
Request.create(HttpMethod.GET, "/api", Collections.emptyMap(), null, Util.UTF_8, null))
.headers(headers)
.build();
throw errorDecoder.decode("Service#foo()", response);
}
@Test
public void throwsFeignExceptionIncludingBody() throws Throwable {
Response response = Response.builder()
.status(500)
.reason("Internal server error")
.request(
Request.create(HttpMethod.GET, "/api", Collections.emptyMap(), null, Util.UTF_8, null))
.headers(headers)
.body("hello world", UTF_8)
.build();
try {
throw errorDecoder.decode("Service#foo()", response);
} catch (FeignException e) {
assertThat(e.getMessage())
.isEqualTo(
"[500 Internal server error] during [GET] to [/api] [Service#foo()]: [hello world]");
assertThat(e.contentUTF8()).isEqualTo("hello world");
}
}
@Test
public void throwsFeignExceptionIncludingLongBody() throws Throwable {
String actualBody = repeatString("hello world ", 200);
Response response = Response.builder()
.status(500)
.reason("Internal server error")
.request(
Request.create(HttpMethod.GET, "/api", Collections.emptyMap(), null, Util.UTF_8, null))
.headers(headers)
.body(actualBody, UTF_8)
.build();
String expectedBody = repeatString("hello world ", 16) + "hello wo... (2400 bytes)";
try {
throw errorDecoder.decode("Service#foo()", response);
} catch (FeignException e) {
assertThat(e.getMessage())
.isEqualTo(
"[500 Internal server error] during [GET] to [/api] [Service#foo()]: [" + expectedBody
+ "]");
assertThat(e.contentUTF8()).isEqualTo(actualBody);
}
}
private String repeatString(String string, int times) {
StringBuilder result = new StringBuilder();
for (int i = 0; i < times; i++) {
result.append(string);
}
return result.toString();
}
@Test
public void testFeignExceptionIncludesStatus() {
Response response = Response.builder()
.status(400)
.reason("Bad request")
.request(
Request.create(HttpMethod.GET, "/api", Collections.emptyMap(), null, Util.UTF_8, null))
.headers(headers)
.build();
Exception exception = errorDecoder.decode("Service#foo()", response);
assertThat(exception).isInstanceOf(FeignException.class);
assertThat(((FeignException) exception).status()).isEqualTo(400);
}
@Test
public void retryAfterHeaderThrowsRetryableException() throws Throwable {
thrown.expect(FeignException.class);
thrown.expectMessage("[503 Service Unavailable] during [GET] to [/api] [Service#foo()]: []");
headers.put(RETRY_AFTER, Collections.singletonList("Sat, 1 Jan 2000 00:00:00 GMT"));
Response response = Response.builder()
.status(503)
.reason("Service Unavailable")
.request(
Request.create(HttpMethod.GET, "/api", Collections.emptyMap(), null, Util.UTF_8, null))
.headers(headers)
.build();
throw errorDecoder.decode("Service#foo()", response);
}
}