Dactyloidae/mobile/ios/ClientTests/StringExtensionsTests.swift
2026-06-26 21:04:09 -07:00

74 lines
3.1 KiB
Swift

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
import Foundation
import XCTest
class StringExtensionsTests: XCTestCase {
func testStartsWith() {
XCTAssertTrue("abcde".startsWith("abcde"))
XCTAssertTrue("abcde".startsWith(""))
XCTAssertTrue("abcde".startsWith("a"))
XCTAssertTrue("abcdea".startsWith("a"))
XCTAssertFalse("abcde".startsWith("fa"))
XCTAssertFalse("abcde".startsWith("af"))
XCTAssertFalse("abcde".startsWith("b"))
}
func testEndsWith() {
XCTAssertTrue("abcde".endsWith("abcde"))
XCTAssertTrue("abcde".endsWith(""))
XCTAssertTrue("abcde".endsWith("e"))
XCTAssertTrue("abcdea".endsWith("a"))
XCTAssertFalse("abcde".endsWith("fe"))
XCTAssertFalse("abcde".endsWith("ef"))
XCTAssertFalse("abcde".endsWith("d"))
}
func testEllipsize() {
// Odd maxLength. Note that we ellipsize with a Unicode join character to avoid wrapping.
XCTAssertEqual("abcd…\u{2060}fgh", "abcdefgh".ellipsize(maxLength: 7))
// Even maxLength.
XCTAssertEqual("abcd…\u{2060}ijkl", "abcdefghijkl".ellipsize(maxLength: 8))
// String shorter than maxLength.
XCTAssertEqual("abcd", "abcd".ellipsize(maxLength: 7))
// Empty String.
XCTAssertEqual("", "".ellipsize(maxLength: 8))
// maxLength < 2.
XCTAssertEqual("abcdefgh", "abcdefgh".ellipsize(maxLength: 0))
}
func testStringByTrimmingLeadingCharactersInSet() {
XCTAssertEqual("foo ", " foo ".stringByTrimmingLeadingCharactersInSet(CharacterSet.whitespaces))
XCTAssertEqual("foo456", "123foo456".stringByTrimmingLeadingCharactersInSet(CharacterSet.decimalDigits))
XCTAssertEqual("", "123456".stringByTrimmingLeadingCharactersInSet(CharacterSet.decimalDigits))
}
func testStringSplitWithNewline() {
XCTAssertEqual("", "".stringSplitWithNewline())
XCTAssertEqual("foo", "foo".stringSplitWithNewline())
XCTAssertEqual("aaa\n bbb", "aaa bbb".stringSplitWithNewline())
XCTAssertEqual("Mark as\n Read", "Mark as Read".stringSplitWithNewline())
XCTAssertEqual("aa\n bbbbbb", "aa bbbbbb".stringSplitWithNewline())
}
func testPercentEscaping() {
func roundtripTest(_ input: String, _ expected: String, file: StaticString = #file, line: UInt = #line) {
let observed = input.escape()!
XCTAssertEqual(observed, expected, "input is \(input)", file: file, line: line)
let roundtrip = observed.unescape()
XCTAssertEqual(roundtrip, input, "encoded is \(observed)", file: file, line: line)
}
roundtripTest("https://mozilla.com", "https://mozilla.com")
roundtripTest("http://www.cnn.com/2017/09/25/politics/north-korea-fm-us-bombers/index.html", "http://www.cnn.com/2017/09/25/politics/north-korea-fm-us-bombers/index.html")
roundtripTest("http://mozilla.com/?a=foo&b=bar", "http://mozilla.com/%3Fa%3Dfoo%26b%3Dbar")
}
}