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// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
class TestNSPredicate: XCTestCase {
func test_BooleanPredicate() {
let truePredicate = NSPredicate(value: true)
let falsePredicate = NSPredicate(value: false)
XCTAssertTrue(truePredicate.evaluate(with: NSObject()))
XCTAssertFalse(falsePredicate.evaluate(with: NSObject()))
}
func test_BlockPredicateWithoutVariableBindings() {
let isNSStringPredicate = NSPredicate { (object, bindings) -> Bool in
return object is NSString
}
XCTAssertTrue(isNSStringPredicate.evaluate(with: NSString()))
XCTAssertFalse(isNSStringPredicate.evaluate(with: NSArray()))
}
let lengthLessThanThreePredicate = NSPredicate { (obj, bindings) -> Bool in
return (obj as! String).utf16.count < 3
}
let startArray = ["1", "12", "123", "1234"]
let expectedArray = ["1", "12"]
func test_filterNSArray() {
let filteredArray = NSArray(array: startArray).filtered(using: lengthLessThanThreePredicate).map { $0 as! String }
XCTAssertEqual(expectedArray, filteredArray)
}
func test_filterNSMutableArray() {
let array = NSMutableArray(array: startArray)
array.filter(using: lengthLessThanThreePredicate)
XCTAssertEqual(NSArray(array: expectedArray), array)
}
func test_filterNSSet() {
let set = NSSet(array: startArray)
let filteredSet = set.filtered(using: lengthLessThanThreePredicate)
XCTAssertEqual(Set(expectedArray), filteredSet)
}
func test_filterNSMutableSet() {
let set = NSMutableSet(array: ["1", "12", "123", "1234"])
set.filter(using: lengthLessThanThreePredicate)
XCTAssertEqual(Set(expectedArray), Set(set.allObjects.map { $0 as! String }))
}
func test_filterNSOrderedSet() {
let orderedSet = NSOrderedSet(array: startArray)
let filteredOrderedSet = orderedSet.filtered(using: lengthLessThanThreePredicate)
XCTAssertEqual(NSOrderedSet(array: expectedArray), filteredOrderedSet)
}
func test_filterNSMutableOrderedSet() {
let orderedSet = NSMutableOrderedSet()
orderedSet.addObjects(from: startArray)
orderedSet.filter(using: lengthLessThanThreePredicate)
let expectedOrderedSet = NSMutableOrderedSet()
expectedOrderedSet.addObjects(from: expectedArray)
XCTAssertEqual(expectedOrderedSet, orderedSet)
}
func test_copy() {
let predicate = NSPredicate(value: true)
XCTAssert(predicate.isEqual(predicate.copy()))
}
}
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