spek medium post

one.kotlin

describe("end to end flow of typical user") {
     CurrentAccountImplementation.connect()

     it("balance starts at 0") {
         assertThat(CurrentAccountImplementation.getCurrentBalance()).isEqualTo(0)
     }

     it("balance is 10 when I add 10") {
         CurrentAccountImplementation.addMoney(10)
         assertThat(CurrentAccountImplementation.getCurrentBalance()).isEqualTo(10)
     }

     it("balance is 5 when I withdraw 5") {
         CurrentAccountImplementation.takeMoney(5)
         assertThat(CurrentAccountImplementation.getCurrentBalance()).isEqualTo(5)
     }
 }