Added unit test
Added unit test

souravsingh/sympy,skidzo/sympy,yashsharan/sympy,yashsharan/sympy,chaffra/sympy,skidzo/sympy,jaimahajan1997/sympy,madan96/sympy,souravsingh/sympy,aktech/sympy,kaushik94/sympy,postvakje/sympy,kaushik94/sympy,chaffra/sympy,madan96/sympy,madan96/sympy,aktech/sympy,kaushik94/sympy,jaimahajan1997/sympy,jaimahajan1997/sympy,postvakje/sympy,souravsingh/sympy,chaffra/sympy,skidzo/sympy,aktech/sympy,postvakje/sympy,yashsharan/sympy