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108 lines
2.8 KiB
Swift
108 lines
2.8 KiB
Swift
//===--- RemoveElements.swift - tests for lazy filtering-------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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// RUN: %target-run-simple-swift
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// REQUIRES: executable_test
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import StdlibUnittest
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let RemoveElements = TestSuite("RemoveElements")
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extension RangeReplaceableCollection where Element: Equatable {
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mutating func remove(equalTo: Element) {
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removeAll(where: { $0 == equalTo })
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}
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}
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RemoveElements.test("removing-array-with-predicate") {
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var a = Array(0..<10)
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a.removeAll(where: { $0 % 2 == 0 })
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expectEqualSequence([1,3,5,7,9], a)
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}
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RemoveElements.test("removing-array-nothing") {
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var a = Array(0..<5)
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a.removeAll(where: { _ in false })
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expectEqualSequence(0..<5, a)
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}
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RemoveElements.test("removing-array-everything") {
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var a = Array(0..<5)
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a.removeAll(where: { _ in true })
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expectEqualSequence([], a)
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}
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RemoveElements.test("removing-array-from-empty") {
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var a: [Int] = []
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a.removeAll(where: { _ in true })
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expectEqualSequence([], a)
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}
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RemoveElements.test("removing-array-with-equatable") {
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var a = Array(0..<5)
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a.remove(equalTo: 6)
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expectEqualSequence([0,1,2,3,4], a)
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a.remove(equalTo: 3)
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expectEqualSequence([0,1,2,4], a)
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a.remove(equalTo: 0)
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expectEqualSequence([1,2,4], a)
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a.remove(equalTo: 4)
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expectEqualSequence([1,2], a)
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a.remove(equalTo: 1)
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expectEqualSequence([2], a)
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a.remove(equalTo: 2)
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expectEqualSequence([], a)
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}
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RemoveElements.test("removing-string-with-predicate") {
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var s = "0123456789"
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s.removeAll(where: { Int(String($0))! % 2 == 0 })
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expectEqualSequence("13579", s)
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}
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RemoveElements.test("removing-string-nothing") {
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var s = "01234"
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s.removeAll(where: { _ in false })
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expectEqualSequence("01234", s)
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}
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RemoveElements.test("removing-string-everything") {
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var s = "01234"
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s.removeAll(where: { _ in true })
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expectEqualSequence("", s)
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}
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RemoveElements.test("removing-string-from-empty") {
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var s = ""
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s.removeAll(where: { _ in true })
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expectEqualSequence("", s)
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}
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RemoveElements.test("removing-string-with-equatable") {
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var s = "01234"
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s.remove(equalTo: "6")
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expectEqualSequence("01234", s)
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s.remove(equalTo: "3")
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expectEqualSequence("0124", s)
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s.remove(equalTo: "0")
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expectEqualSequence("124", s)
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s.remove(equalTo: "4")
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expectEqualSequence("12", s)
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s.remove(equalTo: "1")
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expectEqualSequence("2", s)
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s.remove(equalTo: "2")
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expectEqualSequence("", s)
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}
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runAllTests()
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