org.jenkinsci.constant_pool_scanner.ConstantPoolScannerTest.java Source code

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Here is the source code for org.jenkinsci.constant_pool_scanner.ConstantPoolScannerTest.java

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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2013 Jesse Glick. All rights reserved.
 *
 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.
 * Other names may be trademarks of their respective owners.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common
 * Development and Distribution License("CDDL") (collectively, the
 * "License"). You may not use this file except in compliance with the
 * License. You can obtain a copy of the License at
 * http://www.netbeans.org/cddl-gplv2.html
 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
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 * Notice in each file and include the License file at
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 * particular file as subject to the "Classpath" exception as provided
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 * accompanied this code. If applicable, add the following below the
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package org.jenkinsci.constant_pool_scanner;

import org.jenkinsci.constant_pool_scanner.samples.D;
import org.jenkinsci.constant_pool_scanner.samples.C;
import org.jenkinsci.constant_pool_scanner.samples.A;
import org.jenkinsci.constant_pool_scanner.samples.B;
import java.io.IOException;
import java.util.Set;
import java.util.TreeSet;
import org.apache.commons.io.IOUtils;
import static org.junit.Assert.*;
import org.junit.Test;

public class ConstantPoolScannerTest {

    @Test
    public void basics() throws Exception {
        assertDependencies(A.class, Object.class);
        assertDependencies(B.class, A.class);
        assertDependencies(C.class, Object.class);
        assertDependencies(D.class, Object.class, A.class, B.class, C.class, String.class);
    }

    private static void assertDependencies(Class<?> from, Class<?>... to) throws IOException {
        Set<String> expected = new TreeSet<String>();
        for (Class<?> c : to) {
            expected.add(c.getName());
        }
        expected.add(from.getName());
        byte[] bytecode = IOUtils.toByteArray(
                from.getClassLoader().getResourceAsStream(from.getName().replace('.', '/') + ".class"));
        Set<String> actual = ConstantPoolScanner.dependencies(bytecode);
        assertEquals(expected.toString(), actual.toString());
    }

}