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JsonFileItemWriterBuilderTest.java
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JsonFileItemWriterBuilderTest.java
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/*
* Copyright 2018-2021 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
*
* https://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.batch.item.json.builder;
import java.io.File;
import java.nio.charset.Charset;
import java.nio.file.Files;
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mockito;
import org.springframework.batch.item.file.FlatFileFooterCallback;
import org.springframework.batch.item.file.FlatFileHeaderCallback;
import org.springframework.batch.item.json.JsonFileItemWriter;
import org.springframework.batch.item.json.JsonObjectMarshaller;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;
import org.springframework.test.util.ReflectionTestUtils;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* @author Mahmoud Ben Hassine
* @author Glenn Renfro
*/
public class JsonFileItemWriterBuilderTest {
private Resource resource;
private JsonObjectMarshaller<String> jsonObjectMarshaller;
@Before
public void setUp() throws Exception {
File file = Files.createTempFile("test", "json").toFile();
this.resource = new FileSystemResource(file);
this.jsonObjectMarshaller = object -> object;
}
@Test(expected = IllegalArgumentException.class)
public void testMissingResource() {
new JsonFileItemWriterBuilder<String>()
.jsonObjectMarshaller(this.jsonObjectMarshaller)
.build();
}
@Test(expected = IllegalArgumentException.class)
public void testMissingJsonObjectMarshaller() {
new JsonFileItemWriterBuilder<String>()
.resource(this.resource)
.build();
}
@Test(expected = IllegalArgumentException.class)
public void testMandatoryNameWhenSaveStateIsSet() {
new JsonFileItemWriterBuilder<String>()
.resource(this.resource)
.jsonObjectMarshaller(this.jsonObjectMarshaller)
.build();
}
@Test
public void testJsonFileItemWriterCreation() {
// given
boolean append = true;
boolean forceSync = true;
boolean transactional = true;
boolean shouldDeleteIfEmpty = true;
boolean shouldDeleteIfExists = true;
String encoding = "UTF-8";
String lineSeparator = "#";
FlatFileHeaderCallback headerCallback = Mockito.mock(FlatFileHeaderCallback.class);
FlatFileFooterCallback footerCallback = Mockito.mock(FlatFileFooterCallback.class);
// when
JsonFileItemWriter<String> writer = new JsonFileItemWriterBuilder<String>()
.name("jsonFileItemWriter")
.resource(this.resource)
.jsonObjectMarshaller(this.jsonObjectMarshaller)
.append(append)
.encoding(encoding)
.forceSync(forceSync)
.headerCallback(headerCallback)
.footerCallback(footerCallback)
.lineSeparator(lineSeparator)
.shouldDeleteIfEmpty(shouldDeleteIfEmpty)
.shouldDeleteIfExists(shouldDeleteIfExists)
.transactional(transactional)
.build();
//then
validateBuilderFlags(writer, encoding, lineSeparator, headerCallback, footerCallback);
}
@Test
public void testJsonFileItemWriterCreationDefaultEncoding() {
// given
boolean append = true;
boolean forceSync = true;
boolean transactional = true;
boolean shouldDeleteIfEmpty = true;
boolean shouldDeleteIfExists = true;
String encoding = Charset.defaultCharset().name();
String lineSeparator = "#";
FlatFileHeaderCallback headerCallback = Mockito.mock(FlatFileHeaderCallback.class);
FlatFileFooterCallback footerCallback = Mockito.mock(FlatFileFooterCallback.class);
// when
JsonFileItemWriter<String> writer = new JsonFileItemWriterBuilder<String>()
.name("jsonFileItemWriter")
.resource(this.resource)
.jsonObjectMarshaller(this.jsonObjectMarshaller)
.append(append)
.forceSync(forceSync)
.headerCallback(headerCallback)
.footerCallback(footerCallback)
.lineSeparator(lineSeparator)
.shouldDeleteIfEmpty(shouldDeleteIfEmpty)
.shouldDeleteIfExists(shouldDeleteIfExists)
.transactional(transactional)
.build();
//then
validateBuilderFlags(writer, encoding, lineSeparator, headerCallback, footerCallback);
}
private void validateBuilderFlags(JsonFileItemWriter<String> writer, String encoding,
String lineSeparator, FlatFileHeaderCallback headerCallback,
FlatFileFooterCallback footerCallback) {
assertTrue((Boolean) ReflectionTestUtils.getField(writer, "saveState"));
assertTrue((Boolean) ReflectionTestUtils.getField(writer, "append"));
assertTrue((Boolean) ReflectionTestUtils.getField(writer, "transactional"));
assertTrue((Boolean) ReflectionTestUtils.getField(writer, "shouldDeleteIfEmpty"));
assertTrue((Boolean) ReflectionTestUtils.getField(writer, "shouldDeleteIfExists"));
assertTrue((Boolean) ReflectionTestUtils.getField(writer, "forceSync"));
assertEquals(encoding, ReflectionTestUtils.getField(writer, "encoding"));
assertEquals(lineSeparator, ReflectionTestUtils.getField(writer, "lineSeparator"));
assertEquals(headerCallback, ReflectionTestUtils.getField(writer, "headerCallback"));
assertEquals(footerCallback, ReflectionTestUtils.getField(writer, "footerCallback"));
}
}