### Question:
FieldAndRValue implements Serializable { public Path getField() { return field; } FieldAndRValue();  FieldAndRValue(Path field, RValueExpression rvalue); Path getField(); void setField(Path p); RValueExpression getRValue(); void setRValue(RValueExpression e); @Override String toString(); @Override int hashCode(); @Override boolean equals(Object obj);  }### Answer:
@Test public void testGetField() { FieldAndRValue instance = new FieldAndRValue(); Path expResult = null; Path result = instance.getField(); assertEquals(expResult, result); expResult = new Path("Test"); instance = new FieldAndRValue(expResult, null); result = instance.getField(); assertEquals(expResult, result); }