/**
 * Copyright 2007-2016, Kaazing Corporation. All rights reserved.
 *
 * 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.kaazing.gateway.server.test;

import org.hamcrest.BaseMatcher;
import org.hamcrest.Description;

final class VariableMatcher<T> extends BaseMatcher<T> {

    private final String variableName;
    private final Expectations exp;
    private final Class<T> clazz;

    public VariableMatcher(String variableName, Class<T> clazz, Expectations exp) {
        this.variableName = variableName;
        this.exp = exp;
        this.clazz = clazz;
    }

    @Override
    public boolean matches(Object arg) {
        return arg.equals(exp.lookup(variableName, clazz));
    }

    @Override
    public void describeTo(Description description) {
        description.appendText("equal to saved parameter ").appendValue(variableName);
    }

}
