/*
* Copyright 2014-2016 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.data.rest.webmvc.solr;
import java.io.IOException;
import java.nio.charset.Charset;
import java.util.Map;
import org.springframework.core.io.ByteArrayResource;
import org.springframework.core.io.Resource;
import org.springframework.util.Assert;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StreamUtils;
import org.springframework.util.StringUtils;
/**
* Test helper methods.
*
* @author Oliver Gierke
* @author Christoph Strobl
*/
class TestUtils {
private static final Charset UTF8 = Charset.forName("UTF-8");
/**
* Filters the given {@link Resource} by replacing values within.
*
* @param source must not be {@literal null}.
* @param replacements
* @return {@link Resource} with replaced values.
* @throws IOException
*/
public static Resource filterResource(Resource source, Map<String, ?> replacements) throws IOException {
Assert.notNull(source, "Cannot filter 'null' resource");
if (CollectionUtils.isEmpty(replacements)) {
return source;
}
String temp = StreamUtils.copyToString(source.getInputStream(), UTF8);
for (Map.Entry<String, ?> entry : replacements.entrySet()) {
temp = StringUtils.replace(temp, entry.getKey(), entry.getValue() != null ? entry.getValue().toString() : "");
}
return new ByteArrayResource(temp.getBytes(UTF8));
}
}