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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2021-2022 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
//
//===----------------------------------------------------------------------===//
import XCTest
@testable import _RegexParser
class UtilTests: XCTestCase {
func testTupleTypeConstruction() {
XCTAssertTrue(TypeConstruction.tupleType(
of: []) == Void.self)
XCTAssertTrue(TypeConstruction.tupleType(
of: [Int.self, Any.self]) == (Int, Any).self)
XCTAssertTrue(
TypeConstruction.tupleType(
of: [[Int].self, [Int: Int].self, Void.self, Any.self])
== ([Int], [Int: Int], Void, Any).self)
}
func testTypeErasedTupleConstruction() throws {
do {
let tupleErased = TypeConstruction.tuple(of: [1, 2, 3])
let tuple = try XCTUnwrap(tupleErased as? (Int, Int, Int))
XCTAssertEqual(tuple.0, 1)
XCTAssertEqual(tuple.1, 2)
XCTAssertEqual(tuple.2, 3)
}
do {
let tupleErased = TypeConstruction.tuple(
of: [[1, 2], [true, false], [3.0, 4.0]])
XCTAssertTrue(type(of: tupleErased) == ([Int], [Bool], [Double]).self)
let tuple = try XCTUnwrap(tupleErased as? ([Int], [Bool], [Double]))
XCTAssertEqual(tuple.0, [1, 2])
XCTAssertEqual(tuple.1, [true, false])
XCTAssertEqual(tuple.2, [3.0, 4.0])
}
// Reproducer for a memory corruption bug with transformed captures.
do {
enum GraphemeBreakProperty: UInt32 {
case control = 0
case prepend = 1
}
let tupleErased = TypeConstruction.tuple(of: [
"a"[...], // Substring
Unicode.Scalar(0xA6F0)!, // Unicode.Scalar
Unicode.Scalar(0xA6F0) as Any, // Unicode.Scalar?
GraphemeBreakProperty.prepend // GraphemeBreakProperty
])
let tuple = try XCTUnwrap(
tupleErased as?
(Substring, Unicode.Scalar, Unicode.Scalar, GraphemeBreakProperty))
XCTAssertEqual(tuple.0, "a")
XCTAssertEqual(tuple.1, Unicode.Scalar(0xA6F0)!)
XCTAssertEqual(tuple.2, Unicode.Scalar(0xA6F0)!)
XCTAssertEqual(tuple.3, .prepend)
}
}
}
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