/** This operation checks that Materials.equals() and Materials.hashCode() work. */
@Test
public void checkEquality() {
// Create two test materials to compare against each other
Material testMat1 = TestMaterialFactory.createCO2();
Material testMat2 = TestMaterialFactory.createCO2();
// They should be equal
assertTrue(testMat1.equals(testMat2));
// Make sure that a self comparison works
assertTrue(testMat1.equals(testMat1));
// Make sure that passing something else in fails
assertFalse(testMat1.equals(1));
// Check that the hash code doesn't change with no changes in state
assertEquals(testMat1.hashCode(), testMat1.hashCode());
// Check that they have the same hash codes
assertEquals(testMat1.hashCode(), testMat2.hashCode());
}
