src/test/java/org/apache/commons/lang3/function/MethodInvokersSupplierTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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
 *
 *      https://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.apache.commons.lang3.function;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;

import java.lang.reflect.Method;
import java.util.function.Supplier;

import org.junit.jupiter.api.Test;

/**
 * Tests {@link MethodInvokers#asSupplier(Method)}.
 */
class MethodInvokersSupplierTest extends MethodFixtures {

    @Test
    void testSupplierStaticGetMethod() throws NoSuchMethodException, SecurityException {
        final Supplier<String> supplier = MethodInvokers.asSupplier(getMethodForStaticGetString());
        assertEquals(staticGetString(), supplier.get());
        assertEquals(staticGetString(), supplier.get());
    }

    @Test
    void testSupplierStaticGetMethodToString() throws SecurityException, ReflectiveOperationException {
        // Should not blow up and must return _something_
        final Supplier<Object> supplier = MethodInvokers.asSupplier(getMethodForStaticGetString());
        assertFalse(supplier.toString().isEmpty());
        assertFalse(supplier.toString().isEmpty());
    }

}