Compilation issues with tests

[richard-mauri]

I am using go version go1.11.4 darwin/amd64 with export GO111MODULE=on

i$ go test ./bank

github.com/nikitsenka/bank-go/bank [github.com/nikitsenka/bank-go/bank.test]

bank/main_test.go:13:2: undefined: Init
bank/main_test.go:20:22: not enough arguments in call to NewClient
have (number)
want (*sql.DB, int)

bank/main_test.go:32:16: not enough arguments in call to NewTransaction
have (int, int, number)
want (*sql.DB, int, int, int)
bank/main_test.go:34:26: not enough arguments in call to CheckBalance
have (int)
want (*sql.DB, int)
bank/main_test.go:39:26: not enough arguments in call to CheckBalance
have (int)
want (*sql.DB, int)
bank/main_test.go:49:24: not enough arguments in call to CreateClient
have (Client)
want (*sql.DB, Client)
bank/main_test.go:58:29: not enough arguments in call to CreateTransaction
have (Transaction)
want (*sql.DB, Transaction)
FAIL github.com/nikitsenka/bank-go/bank [build failed]

$ find . -name "*go"|xargs grep NewClient
./bank/bank.go:func NewClient(p *sql.DB, balance int) Client {
./bank/main_test.go: client1 := NewClient(1000)