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Unit Testing Support for Jetty (common classes for some unit tests)

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//
// ========================================================================
// Copyright (c) 1995 Mort Bay Consulting Pty Ltd and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
// which is available at https://www.apache.org/licenses/LICENSE-2.0.
//
// SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
// ========================================================================
//

package org.eclipse.jetty.toolchain.test;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.function.Supplier;

public final class StackUtils
{
    public static String toString(Throwable t)
    {
        try (StringWriter w = new StringWriter())
        {
            try (PrintWriter out = new PrintWriter(w))
            {
                t.printStackTrace(out);
                return w.toString();
            }
        }
        catch (IOException e)
        {
            return "Unable to get stacktrace for: " + t;
        }
    }

    public static Supplier supply(Throwable t)
    {
        return () -> toString(t);
    }
}