ClassLoaderUtilsTests.java example

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junit5-master
/*
 * Copyright 2015-2017 the original author or authors.
 *
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution and is available at
 *
 * http://www.eclipse.org/legal/epl-v10.html
 */

package org.junit.platform.commons.util;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;

import org.junit.jupiter.api.Test;

/**
 * Unit tests for {@link ClassLoaderUtils}.
 *
 * @since 1.0
 */
class ClassLoaderUtilsTests {

	@Test
	void getLocationFromNullFails() {
		PreconditionViolationException exception = assertThrows(PreconditionViolationException.class,
			() -> ClassLoaderUtils.getLocation(null));
		assertEquals("object must not be null", exception.getMessage());
	}

	@Test
	void getLocationFromVariousObjectsArePresent() {
		assertTrue(ClassLoaderUtils.getLocation(void.class).isPresent());
		assertTrue(ClassLoaderUtils.getLocation(byte.class).isPresent());
		assertTrue(ClassLoaderUtils.getLocation(this).isPresent());
		assertTrue(ClassLoaderUtils.getLocation("").isPresent());
		assertTrue(ClassLoaderUtils.getLocation(0).isPresent());
		assertTrue(ClassLoaderUtils.getLocation(Thread.State.RUNNABLE).isPresent());
	}

}