Swift Sleipnir 单元测试框架

Sleipnir 是 BDD 风格的 Swift 框架，灵感来源于Cedar。示例：class SampleSpec : SleipnirSpec {
    var spec : () = describe("Horse") {
        context("usual") {
            it("is not awesome") {
                let usualHorse = UsualHorse()
                expect(usualHorse.legsCount).to(equal(4))
                expect(usualHorse.isAwesome()).to(beFalse())
            }
        }

        context("Sleipnir") {
            it("is awesome") {
                let sleipnirHorse = Sleipnir()
                expect(sleipnirHorse.legsCount).to(equal(8))
                expect(sleipnirHorse.isAwesome()).to(beTrue())
            }
        }
    }}