  Self testing is a device independent approach to estimate the state and
measurement operators, without the need to assume the dimension of our quantum
system. In this paper, we show that one can self test black boxes into any pure
entangled two-qubit state, by performing simple Bell type experiments. The
approach makes use of only one family of two-inputs/two-outputs Bell
inequalities. Furthermore, we outline the sufficient conditions for one to self
test any dimensional bipartite entangled state. All these methods are robust to
small but inevitable experimental errors.
