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// RUN: %target-run-simple-swift
// REQUIRES: executable_test
import StdlibUnittest
import StdlibCollectionUnittest
extension MinimalEquatableValue : Hashable {
public func hash(into hasher: inout Hasher) {
hasher.combine(value)
}
}
public struct DefaultedSetAlgebra<Element : Hashable> : SetAlgebra {
var store = Set<Element>()
public init() {}
public init(_ elements: [Element]) {
store = Set(elements)
}
public init(_store: Set<Element>) {
store = _store
}
public func contains(_ member: Element) -> Bool {
return store.contains(member)
}
public func union(_ other: DefaultedSetAlgebra) -> DefaultedSetAlgebra {
return DefaultedSetAlgebra(_store: store.union(other.store))
}
public func intersection(_ other: DefaultedSetAlgebra)
-> DefaultedSetAlgebra {
var defaultedSetAlgebra = DefaultedSetAlgebra()
defaultedSetAlgebra.store = store.intersection(other.store)
return defaultedSetAlgebra
}
public func symmetricDifference(_ other: DefaultedSetAlgebra)
-> DefaultedSetAlgebra {
var defaultedSetAlgebra = DefaultedSetAlgebra()
defaultedSetAlgebra.store = store.symmetricDifference(other.store)
return defaultedSetAlgebra
}
public mutating func insert(_ newMember: Element)
-> (inserted: Bool, memberAfterInsert: Element) {
return store.insert(newMember)
}
public mutating func remove(_ member: Element) -> Element? {
return store.remove(member)
}
public mutating func update(with newMember: Element) -> Element? {
return store.update(with: newMember)
}
public mutating func formUnion(_ other: DefaultedSetAlgebra) {
store.formUnion(other.store)
}
public mutating func formSymmetricDifference(_ other: DefaultedSetAlgebra) {
store.formSymmetricDifference(other.store)
}
public mutating func formIntersection(_ other: DefaultedSetAlgebra) {
store.formIntersection(other.store)
}
}
public func ==<Element>(lhs: DefaultedSetAlgebra<Element>,
rhs: DefaultedSetAlgebra<Element>) -> Bool {
return lhs.store == rhs.store
}
let SetAlgebraTests = TestSuite("SetAlgebra")
SetAlgebraTests.test("contains").forEach(in: findTests) { test in
typealias P = DefaultedSetAlgebra<MinimalEquatableValue>
expectEqual(test.expected != nil,
P(test.sequence).contains(test.element))
}
SetAlgebraTests.test("union").forEach(in: unionTests) { test in
expectEqual(DefaultedSetAlgebra(test.expected),
DefaultedSetAlgebra(test.lhs).union(DefaultedSetAlgebra(test.rhs)))
}
SetAlgebraTests.test("intersection").forEach(in: intersectionTests) { test in
expectEqual(DefaultedSetAlgebra(test.expected),
DefaultedSetAlgebra(test.lhs).intersection(DefaultedSetAlgebra(test.rhs)))
}
SetAlgebraTests.test("symmetricDifference")
.forEach(in: symmetricDifferenceTests) { test in
let sequence = DefaultedSetAlgebra(test.rhs)
expectEqual(DefaultedSetAlgebra(test.expected),
DefaultedSetAlgebra(test.lhs).symmetricDifference(sequence))
}
SetAlgebraTests.test("insert").forEach(in: findTests) { test in
var sequence = DefaultedSetAlgebra(test.sequence)
expectEqual((test.expected == nil, test.element),
sequence.insert(test.element))
}
SetAlgebraTests.test("subtracting").forEach(in: subtractingTests) { test in
expectEqual(DefaultedSetAlgebra(test.expected),
DefaultedSetAlgebra(test.lhs).subtracting(DefaultedSetAlgebra(test.rhs)))
}
SetAlgebraTests.test("isSubset").forEach(in: findTests) { test in
let sequence = DefaultedSetAlgebra(test.sequence)
expectEqual(test.expected != nil,
DefaultedSetAlgebra([test.element]).isSubset(of: sequence))
}
SetAlgebraTests.test("isDisjoint").forEach(in: findTests) { test in
let sequence = DefaultedSetAlgebra(test.sequence)
expectEqual(test.expected == nil,
sequence.isDisjoint(with: DefaultedSetAlgebra([test.element])))
}
SetAlgebraTests.test("isSuperset").forEach(in: findTests) { test in
let sequence = DefaultedSetAlgebra(test.sequence)
expectEqual(test.expected != nil,
sequence.isSuperset(of: DefaultedSetAlgebra([test.element])))
}
SetAlgebraTests.test("isStrictSuperset")
.forEach(in: strictSupersetTests) { test in
let sequence = DefaultedSetAlgebra(test.rhs)
expectEqual(test.expected,
DefaultedSetAlgebra(test.lhs).isStrictSuperset(of: sequence))
}
SetAlgebraTests.test("isStrictSubset").forEach(in: strictSupersetTests) {
test in
let sequence = DefaultedSetAlgebra(test.lhs)
expectEqual(test.expected,
DefaultedSetAlgebra(test.rhs).isStrictSubset(of: sequence))
}
SetAlgebraTests.test("isEmpty") {
let sequence = [MinimalEquatableValue(1, identity: 1),
MinimalEquatableValue(2, identity: 2)]
expectTrue(DefaultedSetAlgebra<MinimalEquatableValue>().isEmpty)
expectFalse(DefaultedSetAlgebra(sequence).isEmpty)
}
SetAlgebraTests.test("subtract").forEach(in: subtractTests) { test in
var sequence = DefaultedSetAlgebra(test.lhs)
sequence.subtract(DefaultedSetAlgebra(test.rhs))
expectEqual(sequence, DefaultedSetAlgebra(test.expected))
}
runAllTests()
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