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376 lines
15 KiB
Swift
376 lines
15 KiB
Swift
//
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// AttributedStringBuilderTests.swift
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// ElementXTests
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//
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// Created by Stefan Ceriu on 28/03/2022.
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// Copyright © 2022 Element. All rights reserved.
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//
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import XCTest
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@testable import ElementX
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class AttributedStringBuilderTests: XCTestCase {
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let attributedStringBuilder = AttributedStringBuilder()
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let maxHeaderPointSize = ceil(UIFont.preferredFont(forTextStyle: .body).pointSize * 1.2)
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func testRenderHTMLStringWithHeaders() {
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let h1HTMLString = "<h1>Large Heading</h1>";
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let h2HTMLString = "<h2>Smaller Heading</h2>";
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let h3HTMLString = "<h3>Acceptable Heading</h3>";
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guard let h1AttributedString = attributedStringBuilder.fromHTML(h1HTMLString),
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let h2AttributedString = attributedStringBuilder.fromHTML(h2HTMLString),
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let h3AttributedString = attributedStringBuilder.fromHTML(h3HTMLString) else {
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XCTFail("Could not build the attributed string")
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return
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}
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XCTAssertEqual(String(h1AttributedString.characters), "Large Heading")
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XCTAssertEqual(String(h2AttributedString.characters), "Smaller Heading")
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XCTAssertEqual(String(h3AttributedString.characters), "Acceptable Heading")
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XCTAssert(h1AttributedString.runs.count == 1)
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XCTAssert(h2AttributedString.runs.count == 1)
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XCTAssert(h3AttributedString.runs.count == 1)
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let h1Font = h1AttributedString.runs.first?.uiKit.font
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let h2Font = h2AttributedString.runs.first?.uiKit.font
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let h3Font = h3AttributedString.runs.first?.uiKit.font
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XCTAssertEqual(h1Font, h2Font)
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XCTAssertEqual(h2Font, h3Font)
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XCTAssert(h1Font!.pointSize > UIFont.preferredFont(forTextStyle: .body).pointSize)
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XCTAssert(h1Font!.pointSize <= maxHeaderPointSize)
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}
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func testRenderHTMLStringWithPreCode() {
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let htmlString = "<pre><code>1\n2\n3\n4\n</code></pre>"
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guard let attributedString = attributedStringBuilder.fromHTML(htmlString) else {
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XCTFail("Could not build the attributed string")
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return
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}
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XCTAssertEqual(attributedString.runs.first?.uiKit.font?.fontName, "Menlo-Regular")
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let string = String(attributedString.characters)
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let regex = try! NSRegularExpression(pattern: "\\R", options: [])
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XCTAssertEqual(regex.numberOfMatches(in: string, options: [], range: .init(location: 0, length: string.count)), 3)
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}
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func testRenderHTMLStringWithLink() {
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let htmlString = "This text contains a <a href=\"https://www.matrix.org/\">link</a>.";
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guard let attributedString = attributedStringBuilder.fromHTML(htmlString) else {
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XCTFail("Could not build the attributed string")
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return
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}
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XCTAssertEqual(String(attributedString.characters), "This text contains a link.");
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XCTAssertEqual(attributedString.runs.count, 3)
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let link = attributedString.runs.first(where: { $0.link != nil })?.link
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XCTAssertEqual(link?.host, "www.matrix.org")
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}
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func testRenderPlainStringWithLink() {
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let plainString = "This text contains a https://www.matrix.org link.";
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guard let attributedString = attributedStringBuilder.fromPlain(plainString) else {
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XCTFail("Could not build the attributed string")
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return
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}
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XCTAssertEqual(String(attributedString.characters), plainString);
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XCTAssertEqual(attributedString.runs.count, 3)
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let link = attributedString.runs.first(where: { $0.link != nil })?.link
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XCTAssertEqual(link?.host, "www.matrix.org")
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}
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func testRenderHTMLStringWithLinkInHeader() {
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let h1HTMLString = "<h1><a href=\"https://www.matrix.org/\">Matrix.org</a></h1>";
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let h2HTMLString = "<h2><a href=\"https://www.matrix.org/\">Matrix.org</a></h2>";
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let h3HTMLString = "<h3><a href=\"https://www.matrix.org/\">Matrix.org</a></h3>";
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guard let h1AttributedString = attributedStringBuilder.fromHTML(h1HTMLString),
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let h2AttributedString = attributedStringBuilder.fromHTML(h2HTMLString),
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let h3AttributedString = attributedStringBuilder.fromHTML(h3HTMLString) else {
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XCTFail("Could not build the attributed string")
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return
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}
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XCTAssertEqual(String(h1AttributedString.characters), "Matrix.org")
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XCTAssertEqual(String(h2AttributedString.characters), "Matrix.org")
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XCTAssertEqual(String(h3AttributedString.characters), "Matrix.org")
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XCTAssertEqual(h1AttributedString.runs.count, 1)
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XCTAssertEqual(h2AttributedString.runs.count, 1)
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XCTAssertEqual(h3AttributedString.runs.count, 1)
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let h1Font = h1AttributedString.runs.first?.uiKit.font
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let h2Font = h2AttributedString.runs.first?.uiKit.font
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let h3Font = h3AttributedString.runs.first?.uiKit.font
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XCTAssertEqual(h1Font, h2Font)
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XCTAssertEqual(h2Font, h3Font)
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XCTAssert(h1Font!.pointSize > UIFont.preferredFont(forTextStyle: .body).pointSize)
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XCTAssert(h1Font!.pointSize <= maxHeaderPointSize)
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XCTAssertEqual(h1AttributedString.runs.first?.link?.host, "www.matrix.org")
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XCTAssertEqual(h2AttributedString.runs.first?.link?.host, "www.matrix.org")
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XCTAssertEqual(h3AttributedString.runs.first?.link?.host, "www.matrix.org")
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}
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func testRenderHTMLStringWithIFrame() {
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let htmlString = "<iframe src=\"https://www.matrix.org/\"></iframe>";
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guard let attributedString = attributedStringBuilder.fromHTML(htmlString) else {
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XCTFail("Could not build the attributed string")
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return
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}
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XCTAssertNil(attributedString.uiKit.attachment, "iFrame attachments should be removed as they're not included in the allowedHTMLTags array.")
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}
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func testUserIdLink() {
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let userId = "@user:matrix.org"
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let string = "The user is \(userId).";
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checkMatrixEntityLinkIn(attributedString: attributedStringBuilder.fromHTML(string), expected: userId)
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checkMatrixEntityLinkIn(attributedString: attributedStringBuilder.fromPlain(string), expected: userId)
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}
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func testRoomAliasLink() {
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let roomAlias = "#matrix:matrix.org"
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let string = "The room alias is \(roomAlias).";
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checkMatrixEntityLinkIn(attributedString: attributedStringBuilder.fromHTML(string), expected: roomAlias)
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checkMatrixEntityLinkIn(attributedString: attributedStringBuilder.fromPlain(string), expected: roomAlias)
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}
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func testRoomIdLink() {
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let roomId = "!roomidentifier:matrix.org"
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let string = "The room is \(roomId).";
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checkMatrixEntityLinkIn(attributedString: attributedStringBuilder.fromHTML(string), expected: roomId)
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checkMatrixEntityLinkIn(attributedString: attributedStringBuilder.fromPlain(string), expected: roomId)
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}
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func testEventIdLink() {
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let eventId = "$eventidentifier:matrix.org"
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let string = "The event is \(eventId).";
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checkMatrixEntityLinkIn(attributedString: attributedStringBuilder.fromHTML(string), expected: eventId)
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checkMatrixEntityLinkIn(attributedString: attributedStringBuilder.fromPlain(string), expected: eventId)
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}
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func testDefaultFont() {
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let htmlString = "<b>Test</b> <i>string</i>."
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guard let attributedString = attributedStringBuilder.fromHTML(htmlString) else {
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XCTFail("Could not build the attributed string")
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return
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}
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XCTAssertEqual(attributedString.runs.count, 4)
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for run in attributedString.runs {
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XCTAssertEqual(run.uiKit.font?.familyName, UIFont.preferredFont(forTextStyle: .body).familyName)
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}
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}
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func testDefaultForegroundColor() {
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let htmlString = "<b>Test</b> <i>string</i>."
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guard let attributedString = attributedStringBuilder.fromHTML(htmlString) else {
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XCTFail("Could not build the attributed string")
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return
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}
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XCTAssertEqual(attributedString.runs.count, 4)
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for run in attributedString.runs {
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XCTAssertNil(run.uiKit.foregroundColor)
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}
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}
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func testCustomForegroundColor() {
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let htmlString = "<font color=\"#ff00be\">R</font><font color=\"#ff0082\">a</font><font color=\"#ff0047\">i</font><font color=\"#ff5800\">n </font><font color=\"#ffa300\">w</font><font color=\"#d2ba00\">w</font><font color=\"#97ca00\">w</font><font color=\"#3ed500\">.</font><font color=\"#00dd00\">m</font><font color=\"#00e251\">a</font><font color=\"#00e595\">t</font><font color=\"#00e7d6\">r</font><font color=\"#00e7ff\">i</font><font color=\"#00e6ff\">x</font><font color=\"#00e3ff\">.</font><font color=\"#00dbff\">o</font><font color=\"#00ceff\">r</font><font color=\"#00baff\">g</font><font color=\"#f477ff\"> b</font><font color=\"#ff3aff\">o</font><font color=\"#ff00fb\">w</font>"
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guard let attributedString = attributedStringBuilder.fromHTML(htmlString) else {
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XCTFail("Could not build the attributed string")
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return
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}
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XCTAssertEqual(attributedString.runs.count, 8)
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var foundLink = false
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for run in attributedString.runs {
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if run.link != nil {
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XCTAssertEqual(run.link?.path, "www.matrix.org")
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XCTAssertNil(run.uiKit.foregroundColor)
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foundLink = true
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} else {
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XCTAssertNotNil(run.uiKit.foregroundColor)
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}
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}
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XCTAssertTrue(foundLink)
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}
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func testSingleBlockquote() {
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let htmlString = "<blockquote>Blockquote</blockquote>"
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guard let attributedString = attributedStringBuilder.fromHTML(htmlString) else {
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XCTFail("Could not build the attributed string")
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return
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}
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XCTAssertEqual(attributedString.runs.count, 1)
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XCTAssertEqual(attributedStringBuilder.blockquoteCoalescedComponentsFrom(attributedString)?.count, 1)
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for run in attributedString.runs {
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if run.elementX.blockquote != nil {
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return
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}
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}
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XCTFail("Couldn't find blockquote")
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}
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func testBlockquoteWithinText() {
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let htmlString = """
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The text before the blockquote
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<blockquote> For 50 years, WWF has been protecting the future of nature. The world's leading conservation organization, WWF works in 100 countries and is supported by 1.2 million members in the United States and close to 5 million globally.</blockquote>
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The text after the blockquote
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"""
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guard let attributedString = attributedStringBuilder.fromHTML(htmlString) else {
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XCTFail("Could not build the attributed string")
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return
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}
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XCTAssertEqual(attributedString.runs.count, 3)
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XCTAssertEqual(attributedStringBuilder.blockquoteCoalescedComponentsFrom(attributedString)?.count, 3)
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for run in attributedString.runs {
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if run.elementX.blockquote != nil {
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return
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}
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}
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XCTFail("Couldn't find blockquote")
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}
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func testBlockquoteWithLink() {
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let htmlString = "<blockquote>Blockquote with a <a href=\"https://www.matrix.org/\">link</a> in it</blockquote>"
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guard let attributedString = attributedStringBuilder.fromHTML(htmlString) else {
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XCTFail("Could not build the attributed string")
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return
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}
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XCTAssertEqual(attributedString.runs.count, 3)
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guard let coalescedComponents = attributedStringBuilder.blockquoteCoalescedComponentsFrom(attributedString) else {
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XCTFail("Could not build the attributed string components")
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return
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}
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XCTAssertEqual(coalescedComponents.count, 1)
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XCTAssertEqual(coalescedComponents.first?.attributedString.runs.count, 3, "Link not present in the component")
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var foundBlockquoteAndLink = false
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for run in attributedString.runs {
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if run.elementX.blockquote != nil && run.link != nil {
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foundBlockquoteAndLink = true
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}
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}
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XCTAssertNotNil(foundBlockquoteAndLink, "Couldn't find blockquote or link")
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}
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func testMultipleGroupedBlockquotes() {
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let htmlString = """
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<blockquote>First blockquote with a <a href=\"https://www.matrix.org/\">link</a> in it</blockquote>
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<blockquote>Second blockquote with a <a href=\"https://www.matrix.org/\">link</a> in it</blockquote>
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<blockquote>Third blockquote with a <a href=\"https://www.matrix.org/\">link</a> in it</blockquote>
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"""
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guard let attributedString = attributedStringBuilder.fromHTML(htmlString) else {
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XCTFail("Could not build the attributed string")
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return
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}
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XCTAssertEqual(attributedString.runs.count, 7)
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XCTAssertEqual(attributedStringBuilder.blockquoteCoalescedComponentsFrom(attributedString)?.count, 1)
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var numberOfBlockquotes = 0
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for run in attributedString.runs {
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if run.elementX.blockquote != nil && run.link != nil {
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numberOfBlockquotes += 1
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}
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}
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XCTAssertEqual(numberOfBlockquotes, 3, "Couldn't find all the blockquotes")
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}
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func testMultipleSeparatedBlockquotes() {
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let htmlString = """
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First
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<blockquote>blockquote with a <a href=\"https://www.matrix.org/\">link</a> in it</blockquote>
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Second
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<blockquote>blockquote with a <a href=\"https://www.matrix.org/\">link</a> in it</blockquote>
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Third
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<blockquote>blockquote with a <a href=\"https://www.matrix.org/\">link</a> in it</blockquote>
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"""
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guard let attributedString = attributedStringBuilder.fromHTML(htmlString) else {
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XCTFail("Could not build the attributed string")
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return
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}
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XCTAssertEqual(attributedString.runs.count, 12)
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XCTAssertEqual(attributedStringBuilder.blockquoteCoalescedComponentsFrom(attributedString)?.count, 6)
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var numberOfBlockquotes = 0
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for run in attributedString.runs {
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if run.elementX.blockquote != nil && run.link != nil {
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numberOfBlockquotes += 1
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}
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}
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XCTAssertEqual(numberOfBlockquotes, 3, "Couldn't find all the blockquotes")
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}
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// MARK: - Private
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private func checkMatrixEntityLinkIn(attributedString: AttributedString?, expected: String) {
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guard let attributedString = attributedString else {
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XCTFail("Could not build the attributed string")
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return
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}
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XCTAssertEqual(attributedString.runs.count, 3)
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for run in attributedString.runs {
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if run.link != nil {
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XCTAssertEqual(run.link?.path, expected)
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return
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}
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}
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XCTFail("Couldn't find expected value.")
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}
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}
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