CotEditor/Tests/NSLayoutManagerTests.swift
2024-06-11 22:14:10 +09:00

118 lines
6.2 KiB
Swift

//
// NSLayoutManagerTests.swift
// Tests
//
// CotEditor
// https://coteditor.com
//
// Created by 1024jp on 2019-12-02.
//
// ---------------------------------------------------------------------------
//
// © 2019-2024 1024jp
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
import AppKit
import Testing
@testable import CotEditor
struct NSLayoutManagerTests {
@Test func checkTemporaryAttribute() {
let layoutManager = NSLayoutManager()
let textStorage = NSTextStorage(string: "cat dog cow")
textStorage.addLayoutManager(layoutManager)
#expect(!layoutManager.hasTemporaryAttribute(.foregroundColor))
#expect(!layoutManager.hasTemporaryAttribute(.foregroundColor, in: NSRange(..<0)))
layoutManager.addTemporaryAttribute(.foregroundColor, value: NSColor.green, forCharacterRange: NSRange(4..<7))
layoutManager.addTemporaryAttribute(.backgroundColor, value: NSColor.white, forCharacterRange: NSRange(6..<8))
#expect(layoutManager.hasTemporaryAttribute(.foregroundColor))
#expect(!layoutManager.hasTemporaryAttribute(.foregroundColor, in: NSRange(..<4)))
#expect(layoutManager.hasTemporaryAttribute(.foregroundColor, in: NSRange(3..<6)))
#expect(layoutManager.hasTemporaryAttribute(.foregroundColor, in: NSRange(6..<8)))
#expect(!layoutManager.hasTemporaryAttribute(.foregroundColor, in: NSRange(7..<7)))
#expect(!layoutManager.hasTemporaryAttribute(.foregroundColor, in: NSRange(7..<textStorage.length)))
}
@Test func characterIndex() {
let layoutManager = NSLayoutManager()
layoutManager.addTextContainer(NSTextContainer())
let textStorage = NSTextStorage(string: "dog\r\n 🐕")
textStorage.addLayoutManager(layoutManager)
// left characters
#expect(layoutManager.leftCharacterIndex(of: 0, baseWritingDirection: .leftToRight) == 0)
#expect(layoutManager.leftCharacterIndex(of: 1, baseWritingDirection: .leftToRight) == 0)
#expect(layoutManager.leftCharacterIndex(of: 2, baseWritingDirection: .leftToRight) == 1)
#expect(layoutManager.leftCharacterIndex(of: 3, baseWritingDirection: .leftToRight) == 2)
#expect(layoutManager.leftCharacterIndex(of: 4, baseWritingDirection: .leftToRight) == 2)
#expect(layoutManager.leftCharacterIndex(of: 5, baseWritingDirection: .leftToRight) == 3)
#expect(layoutManager.leftCharacterIndex(of: 6, baseWritingDirection: .leftToRight) == 5)
#expect(layoutManager.leftCharacterIndex(of: 7, baseWritingDirection: .leftToRight) == 5)
#expect(layoutManager.leftCharacterIndex(of: 8, baseWritingDirection: .leftToRight) == 6)
// right characters
#expect(layoutManager.rightCharacterIndex(of: 0, baseWritingDirection: .leftToRight) == 1)
#expect(layoutManager.rightCharacterIndex(of: 1, baseWritingDirection: .leftToRight) == 2)
#expect(layoutManager.rightCharacterIndex(of: 2, baseWritingDirection: .leftToRight) == 3)
#expect(layoutManager.rightCharacterIndex(of: 3, baseWritingDirection: .leftToRight) == 5)
#expect(layoutManager.rightCharacterIndex(of: 4, baseWritingDirection: .leftToRight) == 5)
#expect(layoutManager.rightCharacterIndex(of: 5, baseWritingDirection: .leftToRight) == 6)
#expect(layoutManager.rightCharacterIndex(of: 6, baseWritingDirection: .leftToRight) == 8)
#expect(layoutManager.rightCharacterIndex(of: 7, baseWritingDirection: .leftToRight) == 8)
#expect(layoutManager.rightCharacterIndex(of: 8, baseWritingDirection: .leftToRight) == 8)
}
@Test func bidiCharacterIndex() {
let layoutManager = NSLayoutManager()
layoutManager.addTextContainer(NSTextContainer())
let textStorage = NSTextStorage(string: "كلب\r\n 🐕")
textStorage.addLayoutManager(layoutManager)
// left characters
#expect(layoutManager.leftCharacterIndex(of: 0, baseWritingDirection: .leftToRight) == 1)
#expect(layoutManager.leftCharacterIndex(of: 1, baseWritingDirection: .leftToRight) == 2)
#expect(layoutManager.leftCharacterIndex(of: 2, baseWritingDirection: .leftToRight) == 3)
#expect(layoutManager.leftCharacterIndex(of: 3, baseWritingDirection: .leftToRight) == 0)
#expect(layoutManager.leftCharacterIndex(of: 4, baseWritingDirection: .leftToRight) == 1)
#expect(layoutManager.leftCharacterIndex(of: 5, baseWritingDirection: .leftToRight) == 3)
#expect(layoutManager.leftCharacterIndex(of: 6, baseWritingDirection: .leftToRight) == 5)
#expect(layoutManager.leftCharacterIndex(of: 7, baseWritingDirection: .leftToRight) == 5)
#expect(layoutManager.leftCharacterIndex(of: 8, baseWritingDirection: .leftToRight) == 6)
// right characters
#expect(layoutManager.rightCharacterIndex(of: 0, baseWritingDirection: .leftToRight) == 5)
#expect(layoutManager.rightCharacterIndex(of: 1, baseWritingDirection: .leftToRight) == 0)
#expect(layoutManager.rightCharacterIndex(of: 2, baseWritingDirection: .leftToRight) == 1)
#expect(layoutManager.rightCharacterIndex(of: 3, baseWritingDirection: .leftToRight) == 2)
#expect(layoutManager.rightCharacterIndex(of: 4, baseWritingDirection: .leftToRight) == 5)
#expect(layoutManager.rightCharacterIndex(of: 5, baseWritingDirection: .leftToRight) == 6)
#expect(layoutManager.rightCharacterIndex(of: 6, baseWritingDirection: .leftToRight) == 8)
#expect(layoutManager.rightCharacterIndex(of: 7, baseWritingDirection: .leftToRight) == 8)
#expect(layoutManager.rightCharacterIndex(of: 8, baseWritingDirection: .leftToRight) == 8)
}
}