/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch 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.elasticsearch.ingest.common;

public class TrimProcessorTests extends AbstractStringProcessorTestCase {

    @Override
    protected AbstractStringProcessor newProcessor(String field, boolean ignoreMissing) {
        return new TrimProcessor(randomAlphaOfLength(10), field, ignoreMissing);
    }

    @Override
    protected String modifyInput(String input) {
        String updatedFieldValue = "";
        updatedFieldValue = addWhitespaces(updatedFieldValue);
        updatedFieldValue += input;
        updatedFieldValue = addWhitespaces(updatedFieldValue);
        return updatedFieldValue;
    }

    @Override
    protected String expectedResult(String input) {
        return input.trim();
    }

    private static String addWhitespaces(String input) {
        int prefixLength = randomIntBetween(0, 10);
        for (int i = 0; i < prefixLength; i++) {
            input += ' ';
        }
        return input;
    }
}