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XMLUnit with AssertJ fluent API

There is a newer version: 2.10.0

/*
  This file is licensed 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.xmlunit.assertj;

import org.assertj.core.api.AbstractBooleanAssert;
import org.assertj.core.api.AbstractCharSequenceAssert;
import org.assertj.core.api.AbstractDoubleAssert;
import org.assertj.core.api.AbstractIntegerAssert;
import org.assertj.core.api.AbstractObjectArrayAssert;
import org.assertj.core.api.AbstractObjectAssert;
import org.assertj.core.api.BooleanAssert;
import org.assertj.core.api.DoubleAssert;
import org.assertj.core.api.IntegerAssert;
import org.assertj.core.api.ObjectArrayAssert;
import org.assertj.core.api.ObjectAssert;
import org.assertj.core.api.StringAssert;

/**
 * Class that is proxy for AssertJ assertions used by org.xmlunit.assertj.*Assert classes.
 * 
 * XMLUnit AssertJ module is compatibility with Java 7, so it use use AssertJ 2.x version.
 * In AssertJ 3.9.1 was introduced binary incompatibility,
 * so using latest AssertJ version may cause {@link java.lang.NoSuchMethodError}.
 * Using AssertionsAdapter allows to provide custom implementation of assertThat methods in such cases.
 *
 * @see GitHub issude #135
 * @since XMLUnit 2.6.2
 */
class AssertionsAdapter {

    private AssertionsAdapter() {
    }

    static  AbstractObjectAssert assertThat(T actual) {
        return new ObjectAssert<>(actual);
    }

    static  AbstractObjectArrayAssert assertThat(T[] actual) {
        return new ObjectArrayAssert<>(actual);
    }

    static AbstractCharSequenceAssert assertThat(String actual) {
        return new StringAssert(actual);
    }

    static AbstractIntegerAssert assertThat(int actual) {
        return new IntegerAssert(actual);
    }

    static AbstractDoubleAssert assertThat(double actual) {
        return new DoubleAssert(actual);
    }

    static AbstractBooleanAssert assertThat(boolean actual) {
        return new BooleanAssert(actual);
    }
}