mirror of
https://github.com/coteditor/CotEditor.git
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144 lines
4.7 KiB
Swift
144 lines
4.7 KiB
Swift
//
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// LineEndingScannerTests.swift
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//
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// CotEditor
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// https://coteditor.com
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//
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// Created by 1024jp on 2022-04-08.
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//
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// ---------------------------------------------------------------------------
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//
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// © 2022-2024 1024jp
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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import AppKit
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import Testing
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import ValueRange
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@testable import CotEditor
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struct LineEndingScannerTests {
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@Test func scan() {
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let storage = NSTextStorage(string: "dog\ncat\r\ncow")
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let scanner = LineEndingScanner(textStorage: storage, lineEnding: .lf)
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storage.replaceCharacters(in: NSRange(0..<3), with: "dog\u{85}cow")
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// test line ending scan
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#expect(scanner.inconsistentLineEndings ==
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[ValueRange(value: .nel, range: NSRange(location: 3, length: 1)),
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ValueRange(value: .crlf, range: NSRange(location: 11, length: 2))])
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}
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@Test func empty() {
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let storage = NSTextStorage(string: "\r")
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let scanner = LineEndingScanner(textStorage: storage, lineEnding: .lf)
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#expect(scanner.inconsistentLineEndings == [ValueRange(value: .cr, range: NSRange(location: 0, length: 1))])
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// test scanRange does not expand to the out of range
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storage.replaceCharacters(in: NSRange(0..<1), with: "")
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// test line ending scan
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#expect(scanner.inconsistentLineEndings.isEmpty)
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}
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@Test func editCRLF() {
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let storage = NSTextStorage(string: "dog\ncat\r\ncow")
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let scanner = LineEndingScanner(textStorage: storage, lineEnding: .lf)
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// add \r before \n (LF -> CRLF)
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storage.replaceCharacters(in: NSRange(3..<3), with: "\r")
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// remove \n after \r (CRLF -> CR)
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storage.replaceCharacters(in: NSRange(9..<10), with: "")
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// test line ending scan
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#expect(scanner.inconsistentLineEndings ==
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[ValueRange(value: .crlf, range: NSRange(location: 3, length: 2)),
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ValueRange(value: .cr, range: NSRange(location: 8, length: 1))])
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}
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@Test func detect() {
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let storage = NSTextStorage()
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let scanner = LineEndingScanner(textStorage: storage, lineEnding: .lf)
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#expect(scanner.majorLineEnding == nil)
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storage.string = "a"
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#expect(scanner.majorLineEnding == nil)
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storage.string = "\n"
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#expect(scanner.majorLineEnding == .lf)
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storage.string = "\r"
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#expect(scanner.majorLineEnding == .cr)
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storage.string = "\r\n"
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#expect(scanner.majorLineEnding == .crlf)
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storage.string = "\u{85}"
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#expect(scanner.majorLineEnding == .nel)
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storage.string = "abc\u{2029}def"
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#expect(scanner.majorLineEnding == .paragraphSeparator)
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storage.string = "\rfoo\r\nbar\nbuz\u{2029}moin\r\n"
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#expect(scanner.majorLineEnding == .crlf) // most used new line must be detected
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}
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@Test func calculateLineNumber() {
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let storage = NSTextStorage(string: "dog \n\n cat \n cow \n")
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let scanner = LineEndingScanner(textStorage: storage, lineEnding: .lf)
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#expect(scanner.lineNumber(at: 0) == 1)
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#expect(scanner.lineNumber(at: 1) == 1)
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#expect(scanner.lineNumber(at: 4) == 1)
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#expect(scanner.lineNumber(at: 5) == 2)
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#expect(scanner.lineNumber(at: 6) == 3)
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#expect(scanner.lineNumber(at: 11) == 3)
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#expect(scanner.lineNumber(at: 12) == 4)
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#expect(scanner.lineNumber(at: 17) == 4)
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#expect(scanner.lineNumber(at: 18) == 5)
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for _ in 0..<20 {
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storage.string = String(" 🐶 \n 🐱 \n 🐮 \n".shuffled())
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for index in (0..<storage.length).shuffled() {
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#expect(scanner.lineNumber(at: index) == storage.string.lineNumber(at: index),
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"At \(index) with string \"\(storage.string)\"")
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}
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}
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}
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}
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extension NSTextStorage {
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open override var string: String {
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get { super.string }
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set { self.replaceCharacters(in: self.range, with: newValue) }
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}
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}
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