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TestNSRange.swift
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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 TestNSRange : XCTestCase {
static var allTests: [(String, (TestNSRange) -> () throws -> Void)] {
return [
("test_NSRangeFromString", test_NSRangeFromString ),
("test_NSRangeBridging", test_NSRangeBridging),
("test_NSMaxRange", test_NSMaxRange),
("test_NSLocationInRange", test_NSLocationInRange),
("test_NSEqualRanges", test_NSEqualRanges),
("test_NSUnionRange", test_NSUnionRange),
("test_NSIntersectionRange", test_NSIntersectionRange),
("test_NSStringFromRange", test_NSStringFromRange),
("test_init_region_in_ascii_string", test_init_region_in_ascii_string),
("test_init_region_in_unicode_string", test_init_region_in_unicode_string),
("test_hashing", test_hashing),
]
}
func test_NSRangeFromString() {
let emptyRangeStrings = [
"",
"{}",
"{a, b}",
]
let emptyRange = NSRange(location: 0, length: 0)
for string in emptyRangeStrings {
XCTAssert(NSEqualRanges(NSRangeFromString(string), emptyRange))
}
let partialRangeStrings = [
"12",
"[12]",
"{12",
"{12,",
]
let partialRange = NSRange(location: 12, length: 0)
for string in partialRangeStrings {
XCTAssert(NSEqualRanges(NSRangeFromString(string), partialRange))
}
let fullRangeStrings = [
"{12, 34}",
"[12, 34]",
"12.34",
]
let fullRange = NSRange(location: 12, length: 34)
for string in fullRangeStrings {
XCTAssert(NSEqualRanges(NSRangeFromString(string), fullRange))
}
}
func test_NSRangeBridging() {
let swiftRange: Range<Int> = 1..<7
let range = NSRange(swiftRange)
let swiftRange2 = Range(range)
XCTAssertEqual(swiftRange, swiftRange2)
}
func test_NSMaxRange() {
let ranges = [(NSRange(location: 0, length: 3), 3),
(NSRange(location: 7, length: 8), 15),
(NSRange(location: 56, length: 1), 57)]
for (range, result) in ranges {
XCTAssertEqual(NSMaxRange(range), result)
}
}
func test_NSLocationInRange() {
let ranges = [(3, NSRange(location: 0, length: 5), true),
(10, NSRange(location: 2, length: 9), true),
(7, NSRange(location: 2, length: 5), false),
(5, NSRange(location: 5, length: 1), true)];
for (location, range, result) in ranges {
XCTAssertEqual(NSLocationInRange(location, range), result);
}
}
func test_NSEqualRanges() {
let ranges = [(NSRange(location: 0, length: 3), NSRange(location: 0, length: 3), true),
(NSRange(location: 0, length: 4), NSRange(location: 0, length: 8), false),
(NSRange(location: 3, length: 6), NSRange(location: 3, length: 10), false),
(NSRange(location: 0, length: 5), NSRange(location: 7, length: 8), false)]
for (first, second, result) in ranges {
XCTAssertEqual(NSEqualRanges(first, second), result)
}
}
func test_NSUnionRange() {
let ranges = [(NSRange(location: 0, length: 5), NSRange(location: 3, length: 8), NSRange(location: 0, length: 11)),
(NSRange(location: 6, length: 10), NSRange(location: 3, length: 8), NSRange(location: 3, length: 13)),
(NSRange(location: 3, length: 8), NSRange(location: 6, length: 10), NSRange(location: 3, length: 13)),
(NSRange(location: 0, length: 5), NSRange(location: 7, length: 8), NSRange(location: 0, length: 15)),
(NSRange(location: 0, length: 3), NSRange(location: 1, length: 2), NSRange(location: 0, length: 3))]
for (first, second, result) in ranges {
XCTAssert(NSEqualRanges(NSUnionRange(first, second), result))
}
}
func test_NSIntersectionRange() {
let ranges = [(NSRange(location: 0, length: 5), NSRange(location: 3, length: 8), NSRange(location: 3, length: 2)),
(NSRange(location: 6, length: 10), NSRange(location: 3, length: 8), NSRange(location: 6, length: 5)),
(NSRange(location: 3, length: 8), NSRange(location: 6, length: 10), NSRange(location: 6, length: 5)),
(NSRange(location: 0, length: 5), NSRange(location: 7, length: 8), NSRange(location: 0, length: 0)),
(NSRange(location: 0, length: 3), NSRange(location: 1, length: 2), NSRange(location: 1, length: 2))]
for (first, second, result) in ranges {
XCTAssert(NSEqualRanges(NSIntersectionRange(first, second), result))
}
}
func test_NSStringFromRange() {
let ranges = ["{0, 0}": NSRange(location: 0, length: 0),
"{6, 4}": NSRange(location: 6, length: 4),
"{0, 10}": NSRange(location: 0, length: 10),
"{10, 200}": NSRange(location: 10, length: 200),
"{100, 10}": NSRange(location: 100, length: 10),
"{1000, 100000}": NSRange(location: 1000, length: 100_000)];
for (string, range) in ranges {
XCTAssertEqual(NSStringFromRange(range), string)
}
}
/// Specialized for the below tests.
private func _assertNSRangeInit<S: StringProtocol, R: RangeExpression>(
_ region: R, in target: S, is rangeString: String
) where R.Bound == S.Index {
XCTAssert(NSEqualRanges(NSRangeFromString(rangeString), NSRange(region, in: target)))
}
func test_init_region_in_ascii_string() {
// all count = 18
let normalString = "1;DROP TABLE users"
_assertNSRangeInit(normalString.index(normalString.startIndex, offsetBy: 2)..<normalString.index(normalString.endIndex, offsetBy: -6), in: normalString, is: "{2, 10}")
_assertNSRangeInit(normalString.index(after: normalString.startIndex)...normalString.index(before: normalString.endIndex), in: normalString, is: "{1, 17}")
_assertNSRangeInit(normalString.startIndex..., in: normalString, is: "{0, 18}")
_assertNSRangeInit(...normalString.firstIndex(of: " ")!, in: normalString, is: "{0, 7}")
_assertNSRangeInit(..<normalString.lastIndex(of: " ")!, in: normalString, is: "{0, 12}")
let normalSubstring: Substring = normalString.split(separator: ";")[1]
_assertNSRangeInit(normalSubstring.range(of: "TABLE")!, in: normalSubstring, is: "{5, 5}")
_assertNSRangeInit(normalSubstring.index(after: normalSubstring.firstIndex(of: " ")!)..<normalSubstring.lastIndex(of: " ")!, in: normalString, is: "{7, 5}")
_assertNSRangeInit(normalSubstring.firstIndex(of: "u")!...normalSubstring.lastIndex(of: "u")!, in: normalSubstring, is: "{11, 1}")
_assertNSRangeInit(normalSubstring.startIndex..., in: normalSubstring, is: "{0, 16}")
_assertNSRangeInit(normalSubstring.startIndex..., in: normalString, is: "{2, 16}")
_assertNSRangeInit(...normalSubstring.lastIndex(of: " ")!, in: normalSubstring, is: "{0, 11}")
_assertNSRangeInit(..<normalSubstring.lastIndex(of: " ")!, in: normalString, is: "{0, 12}")
}
func test_init_region_in_unicode_string() {
// count: 46, utf8: 90, utf16: 54
let unicodeString = "This is a #naughty👻 string (╯°□°）╯︵ ┻━┻👨👩👧👦)"
_assertNSRangeInit(unicodeString.index(unicodeString.startIndex, offsetBy: 10)..<unicodeString.index(unicodeString.startIndex, offsetBy: 28), in: unicodeString, is: "{10, 19}")
_assertNSRangeInit(unicodeString.index(after: unicodeString.startIndex)...unicodeString.index(before: unicodeString.endIndex), in: unicodeString, is: "{1, 53}")
_assertNSRangeInit(unicodeString.startIndex..., in: unicodeString, is: "{0, 54}")
_assertNSRangeInit(...unicodeString.firstIndex(of: "👻")!, in: unicodeString, is: "{0, 22}")
_assertNSRangeInit(..<unicodeString.range(of: "👨👩👧👦")!.lowerBound, in: unicodeString, is: "{0, 42}")
let unicodeSubstring: Substring = unicodeString[unicodeString.firstIndex(of: "👻")!...]
_assertNSRangeInit(unicodeSubstring.range(of: "👨👩👧👦")!, in: unicodeSubstring, is: "{22, 11}")
_assertNSRangeInit(unicodeSubstring.range(of: "👨")!.lowerBound..<unicodeSubstring.range(of: "👦")!.upperBound, in: unicodeString, is: "{42, 11}")
_assertNSRangeInit(unicodeSubstring.index(after: unicodeSubstring.startIndex)...unicodeSubstring.index(before: unicodeSubstring.endIndex), in: unicodeSubstring, is: "{2, 32}")
_assertNSRangeInit(unicodeSubstring.startIndex..., in: unicodeSubstring, is: "{0, 34}")
_assertNSRangeInit(unicodeSubstring.startIndex..., in: unicodeString, is: "{20, 34}")
_assertNSRangeInit(...unicodeSubstring.firstIndex(of: "╯")!, in: unicodeSubstring, is: "{0, 12}")
_assertNSRangeInit(..<unicodeSubstring.firstIndex(of: "╯")!, in: unicodeString, is: "{0, 31}")
}
func test_hashing() {
let large = Int.max >> 2
let samples: [NSRange] = [
NSRange(location: 1, length: 1),
NSRange(location: 1, length: 2),
NSRange(location: 2, length: 1),
NSRange(location: 2, length: 2),
NSRange(location: large, length: large),
NSRange(location: 0, length: large),
NSRange(location: large, length: 0),
]
checkHashable(samples, equalityOracle: { $0 == $1 })
}
}