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dac06898e9
Implements the minimum specified by the SE-proposal.
* Add the CaseIterable protocol with AllCases associatedtype and
allCases requirement
* Automatic synthesis occurs for "simple" enums
- Caveat: Availability attributes suppress synthesis. This can be
lifted in the future
- Caveat: Conformance must be stated on the original type
declaration (just like synthesizing Equatable/Hashable)
- Caveat: Synthesis generates an [T]. A more efficient collection
- possibly even a lazy one - should be put here.
22 lines
474 B
Swift
22 lines
474 B
Swift
// RUN: %target-run-simple-swift %t
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// REQUIRES: executable_test
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import StdlibUnittest
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var CaseIterableTests = TestSuite("CaseIterableTests")
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CaseIterableTests.test("Simple Enums") {
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enum SimpleEnum: CaseIterable {
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case bar
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case baz
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case quux
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}
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expectEqual(SimpleEnum.allCases.count, 3)
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expectTrue(SimpleEnum.allCases.contains(.bar))
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expectTrue(SimpleEnum.allCases.contains(.baz))
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expectTrue(SimpleEnum.allCases.contains(.quux))
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}
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runAllTests()
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