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package bsh;

import junit.framework.Assert;

import org.junit.Test;

public class BshMethodTest {

    /**
     * Verifies that subclasses are not considered equal to superclass interfaces
     * with a (potential) subset of the subclasses fields.
     */
    @SuppressWarnings("serial")
    @Test
    public void testEqualsObject_subclassEquality() {
        // define a simple subclass of BshMethod:
        class SubMethod extends BshMethod {

            public SubMethod(String name, Class returnType, String[] paramNames, Class[] paramTypes, BSHBlock methodBody, NameSpace declaringNameSpace, Modifiers modifiers) {
                super(name, returnType, paramNames, paramTypes, methodBody, declaringNameSpace, modifiers);
            }
        }

        final String name = "testMethod";
        final BshMethod subInst = new SubMethod(name, Integer.class, new String[]{}, new Class[]{}, null, null, null);
        final BshMethod supInst = new BshMethod(name, Integer.class, new String[]{}, new Class[]{}, null, null, null);

        Assert.assertFalse("Subclasses should not be equal to super classes", supInst.equals(subInst));
    }


    /**
     * Very simple test to verify hashcode contract.
     */
    @Test
    public void testHashCode_contract() {
        final String name = "testMethod";
        final BshMethod method1 = new BshMethod(name, Integer.class, new String[]{}, new Class[]{}, null, null, null);
        final BshMethod method2 = new BshMethod(name, Integer.class, new String[]{}, new Class[]{}, null, null, null);

        Assert.assertTrue("precondition check for test failed.", method2.equals(method1));
        Assert.assertEquals("Equal classes should have equal hashcodes", method2.hashCode(), method1.hashCode());
    }
}
