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+package modelo;%0A%0Aimport static org.junit.Assert.*;%0A%0Aimport org.junit.Test;%0A%0Apublic class TipoDeCambioTest %7B%0A%0A%09@Test%0A%09public void testSinglenton() %7B%0A%09%09TipoDeCambio c1,c2;%0A%09%09c1 = TipoDeCambio.obtenerCuenta();%0A%09%09c2 = TipoDeCambio.obtenerCuenta();%0A%09%09%0A%09%09assertSame(c1, c2);%0A%09%7D%0A%0A%7D%0A

Update TipoDeCambioTest.java