| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.johnzon.core; |
| |
| import org.junit.Test; |
| |
| import javax.json.stream.JsonGenerator; |
| import java.io.ByteArrayOutputStream; |
| import java.io.UnsupportedEncodingException; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import static java.util.Collections.emptyMap; |
| import static org.junit.Assert.assertArrayEquals; |
| import static org.junit.Assert.assertEquals; |
| |
| public class JsonGeneratorFactoryImplTest { |
| @Test |
| public void boundedOutputStream() throws UnsupportedEncodingException { |
| final Map<String, Object> boundedConfig = new HashMap<>(); |
| boundedConfig.put(JsonGeneratorFactoryImpl.BOUNDED_OUTPUT_STREAM_WRITER_LEN, 1); |
| boundedConfig.put(JsonGeneratorFactoryImpl.GENERATOR_BUFFER_LENGTH, 1); |
| |
| final ByteArrayOutputStream bounded = new ByteArrayOutputStream(); |
| final ByteArrayOutputStream defaultOut = new ByteArrayOutputStream(); |
| |
| try (final JsonGenerator boundedGenerator = new JsonGeneratorFactoryImpl(boundedConfig).createGenerator(bounded); |
| final JsonGenerator defaultGenerator = new JsonGeneratorFactoryImpl(emptyMap()).createGenerator(defaultOut)) { |
| assertEquals(0, defaultOut.size()); |
| assertEquals(0, bounded.size()); |
| |
| boundedGenerator.writeStartObject(); |
| defaultGenerator.writeStartObject(); |
| assertEquals(0, defaultOut.size()); |
| assertEquals(0, bounded.size()); |
| |
| boundedGenerator.write("k", "val"); |
| defaultGenerator.write("k", "val"); |
| assertEquals(0, defaultOut.size()); |
| assertEquals(8, bounded.size()); |
| // this is the interesting part, there is still some buffering in the StreamEncoder due to |
| // encoding logic but it flushes "often enough" for our usage |
| assertEquals("{\"k\":\"va", bounded.toString("UTF-8")); |
| |
| boundedGenerator.writeEnd(); |
| defaultGenerator.writeEnd(); |
| assertEquals(0, defaultOut.size()); |
| assertEquals(9, bounded.size()); |
| } |
| |
| assertArrayEquals(bounded.toByteArray(), defaultOut.toByteArray()); |
| assertEquals("{\"k\":\"val\"}", bounded.toString("UTF-8")); |
| } |
| } |