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[SR-1589] Add non-throwing testCase() wrapper function. #115

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[SR-1589] Add non-throwing testCase() wrapper function. #115

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17 changes: 17 additions & 0 deletions Sources/XCTest/XCTestCase.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -178,3 +178,20 @@ private func test<T: XCTestCase>(_ testFunc: (T) -> () throws -> Void) -> (XCTes
try testFunc(testCase)()
}
}

/// Wrapper function for the non-throwing variant of tests.
/// - seealso: `XCTMain`
public func testCase<T: XCTestCase>(_ allTests: [(String, (T) -> () -> Void)]) -> XCTestCaseEntry {
let tests: [(String, (XCTestCase) throws -> Void)] = allTests.map { ($0.0, test($0.1)) }
return (T.self, tests)
}

private func test<T: XCTestCase>(_ testFunc: (T) -> () -> Void) -> (XCTestCase) throws -> Void {
return { testCaseType in
guard let testCase = testCaseType as? T else {
fatalError("Attempt to invoke test on class \(T.self) with incompatible instance type \(testCaseType.dynamicType)")
}

try testFunc(testCase)()
}
}