givenCommands
fun givenCommands(vararg commands: Any, scope: Scope? = null, headers: Map<String, String> = emptyMap(), operator: Operator? = null, caller: Caller? = null)
Sends commands in order, as whenCommand sends one (by caller, in scope, with headers, in the name of operator), as the setup of a scenario: each commits, or changes nothing. A command that is rejected, or whose decide function throws, fails the specification, naming the command and what it was.