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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
import _StringProcessing
let allScalars = Unicode.Scalar.allScalars
extension Unicode.Scalar {
var isUnicode12OrEarlier: Bool {
properties.age.map { age in age <= (12, 0) } ?? false
}
}
class AllScalarsTests: XCTestCase {
func testCollectionConformance() {
let calculatedCount = (0...0xD7FF).count + (0xE000...0x10FFFF).count
XCTAssertEqual(calculatedCount, allScalars.count)
XCTAssertEqual(calculatedCount, allScalars.reduce(0, { sum, _ in sum + 1 }))
}
func testIndexOf() throws {
for scalar in "béड🥰 \u{0} \u{D7FF} \u{E000} \u{10FFFF}".unicodeScalars {
let i = try XCTUnwrap(allScalars.firstIndex(of: scalar))
XCTAssertEqual(scalar, allScalars[i])
}
}
func testProperties() throws {
let whitespaces = allScalars.filter { $0.properties.isWhitespace }
XCTAssertEqual(25, whitespaces.count)
let numericIndices = allScalars
.indices
.filter {
allScalars[$0].isUnicode12OrEarlier
&& allScalars[$0].properties.numericType == .decimal
}
XCTAssertEqual(630, numericIndices.count)
let digitSum = try numericIndices
.map { try XCTUnwrap(allScalars[$0].properties.numericValue) }
.reduce(0, +)
XCTAssertEqual(2835, digitSum)
XCTAssertEqual(4.5, digitSum / Double(numericIndices.count))
}
}
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