Function assertSplitWhere

repos/effect/packages/effect/test/Array.test.ts:193–201

(
        input: Iterable<number>,
        expectedInit: ReadonlyArray<number>,
        expectedRest: ReadonlyArray<number>
      )

        expectedRest: ReadonlyArray<number>
      ) => {
        const [init, rest] = f(input)
        deepStrictEqual(init, expectedInit)
        deepStrictEqual(rest, expectedRest)
      }
      assertSpan([1, 3, 2, 4, 5], [1, 3], [2, 4, 5])
      assertSpan(Arr.empty(), Arr.empty(), Arr.empty())
      assertSpan([1, 3], [1, 3], Arr.empty())
      assertSpan([2, 4], Arr.empty(), [2, 4])

      assertSpan(new Set([1, 3, 2, 4, 5]), [1, 3], [2, 4, 5])
      assertSpan(new Set(), Arr.empty(), Arr.empty())
      assertSpan(new Set([1, 3]), [1, 3], Arr.empty())