javascriptError lttoHaveBeenCall

javascript - Error: <toHaveBeenCalled> : Expected a spy, but got Function - Stack Overflow
Here is the test codevar list = new List([1, 2, 3, 4]);var list2 = new List([5, 1]);beforeAll(function
javascriptError lttoHaveBeenCalledgtExpected a spybut got FunctionStack Overflow
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