aufflick/testGCDDeterminism.swift

## testGCDDeterminism.swift
import XCTest

class GCDTestTests: XCTestCase {
    func testGCDDeterminism() {
      // Just for sanity, confirming *everything* is happening on the serial main thread.
      assert(Thread.isMainThread)
      for _ in 0..<1_000 {
        let expectations = (0..<1_000).map { self.expectation(description: "Expect \($0)") }
        for i in 0..<1_000 {
          DispatchQueue.main.async {
            expectations[i].fulfill()
          }
        }
        wait(for: expectations, timeout: 1, enforceOrder: true)
      }
  }
}
	import XCTest

	class GCDTestTests: XCTestCase {
	func testGCDDeterminism() {
	// Just for sanity, confirming everything is happening on the serial main thread.
	assert(Thread.isMainThread)
	for _ in 0..<1_000 {
	let expectations = (0..<1_000).map { self.expectation(description: "Expect \($0)") }
	for i in 0..<1_000 {
	DispatchQueue.main.async {
	expectations[i].fulfill()
	}
	}
	wait(for: expectations, timeout: 1, enforceOrder: true)
	}
	}
	}