@Test
public void I_can_check_the_hash_code_of_an_error_message() {
final Error left = new Error(ERROR_MESSAGE);
final Error right = new Error(new Exception(ERROR_MESSAGE));
assertEquals(
"equivalent errors hash codes should be equal.", left.hashCode(), right.hashCode());
assertNotEquals(
"different errors hash code not should be equal.",
left.hashCode(),
new Error("different").hashCode());
assertNotEquals(
"an error should not have the same hash cide as an object.",
left.hashCode(),
new Object().hashCode());
}
