@Test
public void shouldAcquireSchemaReadLockBeforeRetrievingConstraintsByLabel() throws Exception {
// given
SchemaReadOperations delegate = mock(SchemaReadOperations.class);
@SuppressWarnings("unchecked")
Iterator<UniquenessConstraint> constraints = mock(Iterator.class);
when(delegate.constraintsGetForLabel(state, 123)).thenReturn(constraints);
LockingStatementOperations context = new LockingStatementOperations(null, delegate, null, null);
// when
Iterator<UniquenessConstraint> result = context.constraintsGetForLabel(state, 123);
// then
assertEquals(constraints, result);
InOrder order = inOrder(lockHolder, delegate);
order.verify(lockHolder).acquireSchemaReadLock();
order.verify(delegate).constraintsGetForLabel(state, 123);
verifyNoMoreInteractions(lockHolder, delegate);
}
