// RUN: %target-run-simple-swift // REQUIRES: executable_test import StdlibUnittest import DifferentiationUnittest var RepeatedCallsTests = TestSuite("RepeatedCalls") RepeatedCallsTests.testWithLeakChecking("Repeat") { func mul2(_ x: Tracked) -> Tracked { return 2 * x } func mul4(_ x: Tracked) -> Tracked { return mul2(mul2(x)) } expectEqual(4, gradient(at: 0, of: mul4)) } runAllTests()