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A TestNG like dataprovider runner for JUnit Jupiter which is feature comparable to JUnit4 dataprovider.

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/*
 * Copyright 2019 TNG Technology Consulting GmbH
 *
 * 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 com.tngtech.junit.dataprovider;

import org.junit.platform.commons.support.ReflectionSupport;

import com.tngtech.junit.dataprovider.convert.ConverterContext;

/**
 * Default implementation for using a dataprovider that provides the data directly within itself.
 */
public class DataProviderExtension extends DataProviderInvocationContextProvider {

    DataProviderExtension() {
        super(DataProvider.class);
    }

    @Override
    protected Object getData(DataProvider dataProvider) {
        return dataProvider.value();
    }

    @Override
    protected ConverterContext getConverterContext(DataProvider dataProvider) {
        return new ConverterContext(ReflectionSupport.newInstance(dataProvider.objectArrayConverter()),
                ReflectionSupport.newInstance(dataProvider.singleArgConverter()),
                ReflectionSupport.newInstance(dataProvider.stringConverter()), dataProvider.splitBy(),
                dataProvider.convertNulls(), dataProvider.trimValues(), dataProvider.ignoreEnumCase());
    }

    @Override
    protected DisplayNameContext getDisplayNameContext(DataProvider dataProvider) {
        return new DisplayNameContext(dataProvider.formatter(), dataProvider.format(), getDefaultPlaceholders());
    }
}