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ANKCoreInteger+Addition.swift
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//=----------------------------------------------------------------------------=
// This source file is part of the AwesomeNumbersKit open source project.
//
// Copyright (c) 2022 Oscar Byström Ericsson
// Licensed under Apache License, Version 2.0
//
// See http://www.apache.org/licenses/LICENSE-2.0 for license information.
//=----------------------------------------------------------------------------=
#if DEBUG
import ANKCoreKit
import XCTest
//*============================================================================*
// MARK: * ANK x Core Integer x Addition
//*============================================================================*
final class ANKCoreIntegerTestsOnAddition: XCTestCase {
typealias T = any ANKCoreInteger.Type
//=------------------------------------------------------------------------=
// MARK: State
//=------------------------------------------------------------------------=
let types: [T] = ANKCoreIntegerTests.types
//=------------------------------------------------------------------------=
// MARK: Tests
//=------------------------------------------------------------------------=
func testAdding() {
func whereIsSigned<T>(_ type: T.Type) where T: ANKCoreInteger {
ANKAssertAddition(T( 1), T( 2), T( 3))
ANKAssertAddition(T( 1), T( 1), T( 2))
ANKAssertAddition(T( 1), T( 0), T( 1))
ANKAssertAddition(T( 1), T(-1), T( 0))
ANKAssertAddition(T( 1), T(-2), T(-1))
ANKAssertAddition(T( 0), T( 2), T( 2))
ANKAssertAddition(T( 0), T( 1), T( 1))
ANKAssertAddition(T( 0), T( 0), T( 0))
ANKAssertAddition(T( 0), T(-1), T(-1))
ANKAssertAddition(T( 0), T(-2), T(-2))
ANKAssertAddition(T(-1), T( 2), T( 1))
ANKAssertAddition(T(-1), T( 1), T( 0))
ANKAssertAddition(T(-1), T( 0), T(-1))
ANKAssertAddition(T(-1), T(-1), T(-2))
ANKAssertAddition(T(-1), T(-2), T(-3))
}
func whereIsUnsigned<T>(_ type: T.Type) where T: ANKCoreInteger {
ANKAssertAddition(T(0), T(0), T(0))
ANKAssertAddition(T(0), T(1), T(1))
ANKAssertAddition(T(0), T(2), T(2))
ANKAssertAddition(T(1), T(0), T(1))
ANKAssertAddition(T(1), T(1), T(2))
ANKAssertAddition(T(1), T(2), T(3))
}
for type: T in types {
type.isSigned ? whereIsSigned(type) : whereIsUnsigned(type)
}
}
func testAddingReportingOverflow() {
func whereIsSigned<T>(_ type: T.Type) where T: ANKCoreInteger {
ANKAssertAddition(T.min, T( 1), T.min + T(1))
ANKAssertAddition(T.min, T(-1), T.max, true)
ANKAssertAddition(T.max, T( 1), T.min, true)
ANKAssertAddition(T.max, T(-1), T.max - T(1))
}
func whereIsUnsigned<T>(_ type: T.Type) where T: ANKCoreInteger {
ANKAssertAddition(T.min, T(1), T.min + T(1))
ANKAssertAddition(T.max, T(1), T.min, true)
}
for type: T in types {
type.isSigned ? whereIsSigned(type) : whereIsUnsigned(type)
}
}
//=------------------------------------------------------------------------=
// MARK: Tests x Miscellaneous
//=------------------------------------------------------------------------=
func testOverloadsAreUnambiguousWhenUsingIntegerLiterals() {
func becauseThisCompilesSuccessfully(_ x: inout some ANKCoreInteger) {
XCTAssertNotNil(x += 0)
XCTAssertNotNil(x &+= 0)
XCTAssertNotNil(x.addReportingOverflow(0))
XCTAssertNotNil(x + 0)
XCTAssertNotNil(x &+ 0)
XCTAssertNotNil(x.addingReportingOverflow(0))
}
}
}
#endif