@Test
public void shouldNotAddConstraintAlreadyExistsInTheStore() throws Exception {
// given
UniquenessConstraint constraint = new UniquenessConstraint(10, 66);
TxState txState = mock(TxState.class);
when(txState.nodesWithLabelChanged(anyInt())).thenReturn(DiffSets.<Long>emptyDiffSets());
KernelStatement state = mockedState(txState);
when(inner.constraintsGetForLabelAndPropertyKey(10, 66))
.thenAnswer(asAnswer(asList(constraint)));
StateHandlingStatementOperations context = newTxStateOps(inner);
// when
context.uniquenessConstraintCreate(state, 10, 66);
// then
verify(txState).constraintIndexDoUnRemove(any(IndexDescriptor.class));
}
