98 lines
4.5 KiB
Swift
98 lines
4.5 KiB
Swift
//
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// Copyright 2023 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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//
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import XCTest
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@testable import SignalServiceKit
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class LinkValidatorTest: XCTestCase {
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func testCanParseURLs() {
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XCTAssertTrue(LinkValidator.canParseURLs(in: "https://signal.org/"))
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XCTAssertFalse(LinkValidator.canParseURLs(in: "\u{202e}https://signal.org/"))
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}
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func testFirstLinkPreviewURL() {
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let testCases: [(String, String?)] = [
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// Invalid: Explicit scheme is required
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("signal.org", nil),
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("www.signal.org", nil),
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("https.signal.org", nil),
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// Invalid: Scheme must be https
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("http://www.signal.org", nil),
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("ftp://www.signal.org", nil),
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// Valid
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("https://signal.org", "https://signal.org"),
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("HTTPS://signal.org", "HTTPS://signal.org"),
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("https://www.signal.org", "https://www.signal.org"),
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("https://www.signal.org:443/blahh.html?query=value", "https://www.signal.org:443/blahh.html?query=value"),
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("https://test.signal.org/", "https://test.signal.org/"),
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// Invalid: Username/Password disallowed
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("https://mlin@www.signal.org", nil),
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("https://:pass@www.signal.org", nil),
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("https://mlin:mypass@www.signal.org", nil),
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// Invalid: .onion TLD explicitly disallowed
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("https://3g2upl4pq6kufc4m.onion", nil),
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("https://3g2upl4pq6kufc4m.ONION", nil),
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("https://3g2upl4pq6kufc4m....onion", nil),
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// Valid
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("https://3g2upl4pq6kufc4m.onion.com", "https://3g2upl4pq6kufc4m.onion.com"),
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("https://3g2upl4pq6kufc4m.oniony", "https://3g2upl4pq6kufc4m.oniony"),
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("https://3g2upl4pq6kufc4m.oonion", "https://3g2upl4pq6kufc4m.oonion"),
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("https://3g2upl4pq6kufc4m.oniony/onion", "https://3g2upl4pq6kufc4m.oniony/onion"),
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("https://3g2upl4pq6kufc4m.oniony#onion", "https://3g2upl4pq6kufc4m.oniony#onion"),
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// Invalid, mixed-ASCII
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("https://www.wikipediа.org", nil), // (а is cyrillic)
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("https://www.wikipediä.org", nil),
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// This is a valid URL. Our heuristic is a little sensitive
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// If we relax our heuristic and this returns non-nil, that's okay
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("https://中国互联网络信息中心.cn", nil),
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// NSDataDetector parsing failures
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("https://中国互联网络信息中心。中国", nil), // NSDataDetector does not parse a TLD of "。中国"
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// Valid, all ASCII or non-ASCII + period
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("https://中国互联网络信息中心.中国", "https://xn--fiqa61au8b7zsevnm8ak20mc4a87e.xn--fiqs8s"),
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("https://中国互联网络信息中心.中国/nonASCIIPath", "https://xn--fiqa61au8b7zsevnm8ak20mc4a87e.xn--fiqs8s/nonASCIIPath"),
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("https://中国互联网络信息中心.中国?nonASCIIQuery", "https://xn--fiqa61au8b7zsevnm8ak20mc4a87e.xn--fiqs8s?nonASCIIQuery"),
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("https://中国互联网络信息中心.中国#fragment", "https://xn--fiqa61au8b7zsevnm8ak20mc4a87e.xn--fiqs8s#fragment"),
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("https://signal.org/你好", "https://signal.org/%E4%BD%A0%E5%A5%BD"),
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("https://signal.org?你好", "https://signal.org?%E4%BD%A0%E5%A5%BD"),
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("https://signal.org#你好", "https://signal.org#%E4%BD%A0%E5%A5%BD"),
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("", nil),
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("alice bob jim", nil),
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("alice bob jim http://", nil),
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("alice bob jim http://a.com", nil),
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("https://www.youtube.com/watch?v=tP-Ipsat90c", "https://www.youtube.com/watch?v=tP-Ipsat90c"),
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("alice bob https://www.youtube.com/watch?v=tP-Ipsat90c jim", "https://www.youtube.com/watch?v=tP-Ipsat90c"),
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// If there are more than one, take the first.
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("alice bob https://signal.org/url_1 jim https://signal.org/url_2 carol", "https://signal.org/url_1")
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]
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for (entireMessage, expectedValue) in testCases {
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let actualValue = LinkValidator.firstLinkPreviewURL(in: entireMessage)
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XCTAssertEqual(actualValue?.absoluteString, expectedValue, entireMessage)
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}
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}
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func testFindFirstValidUrlPerformance() throws {
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let entireMessage = String(repeating: "https://example.com ", count: 1_000_000)
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let expectedValue = try XCTUnwrap(URL(string: "https://example.com"))
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measure {
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let actualValue = LinkValidator.firstLinkPreviewURL(in: entireMessage)
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XCTAssertEqual(actualValue, expectedValue)
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}
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}
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}
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