create Test to test GetPreviousLoan Amount
test for multiple loans
test for getCurrentCreditLimit with first loan
small name change
small fix in getCurrentCreditLimit method
test for getCurrentCreditLimit with LoanAmount greaterThen firstLoanValue threshold
test for plural Loan with not long held enough
small fix in getCurrentCreditLimit Method
test for plural loan with held long enough
add creditEarned true test
add creditEarned true test where needed
Merge pull request #202 from SingularityGuy/getCurrentCredit/Tests

Get current credit/tests