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Jython is an implementation of the high-level, dynamic, object-oriented language Python written in 100% Pure Java, and seamlessly integrated with the Java platform. It thus allows you to run Python on any Java platform.

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//Copyright (c) Corporation for National Research Initiatives
package javatests;

import java.lang.reflect.Field;
import java.lang.NoSuchFieldException;

/**
 * @author updikca1
 */
public class TestSupport {

    public static class AssertionError extends RuntimeException {

        public AssertionError() {
            super();
        }

        public AssertionError(String message) {
            super(message);
        }

        public AssertionError(String message, Throwable cause) {
            super(message, cause);
        }

        public AssertionError(Throwable cause) {
            super(cause);
        }
    }

    public static void assertThat(boolean test, String message) {
        if (!test) {
            throw new AssertionError(message);
        }
    }

    public static void fail(String message) {
        throw new AssertionError(message);
    }

    public static void assertEquals(Object a, Object b, String message) {

        assertThat(a.equals(b), message + "[a.equals(b) failed]");
        assertThat(b.equals(a), message + "[b.equals(a) failed]");
    }

    public static void assertNotEquals(Object a, Object b, String message) {

        assertThat( !a.equals(b), message + "[not a.equals(b) failed]");
        assertThat( !b.equals(a), message + "[not b.equals(a) failed]");
    }

    public static Field getField(Class cls, String name) {
        try {
            Field f = cls.getDeclaredField(name);
            f.setAccessible(true);
            return f;
        } catch (NoSuchFieldException ex) {
            throw new RuntimeException(ex);
        }
    }

}