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String+ExtensionsTests.swift
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String+ExtensionsTests.swift
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// Copyright (c) 2019-2020 XMLCoder contributors
//
// This software is released under the MIT License.
// https://opensource.org/licenses/MIT
//
// Created by Joseph Mattiello on 1/31/19.
//
import XCTest
@testable import XMLCoder
class StringExtensionsTests: XCTestCase {
func testCapitalizingFirstLetter() {
let testStrings = ["lower", "UPPER", "snake_cased", "RaNdOm", ""]
let expected = ["Lower", "UPPER", "Snake_cased", "RaNdOm", ""]
let converted = testStrings.map { $0.capitalizingFirstLetter() }
XCTAssertEqual(expected, converted)
// Mutable version
let mutated: [String] = testStrings.map { s in
var s = s
s.capitalizeFirstLetter()
return s
}
XCTAssertEqual(expected, mutated)
}
func testLowercasingFirstLetter() {
let testStrings = ["lower", "UPPER", "snake_cased", "RaNdOm", ""]
let expected = ["lower", "uPPER", "snake_cased", "raNdOm", ""]
let converted = testStrings.map { $0.lowercasingFirstLetter() }
XCTAssertEqual(expected, converted)
// Mutable version
let mutated: [String] = testStrings.map { s in
var s = s
s.lowercaseFirstLetter()
return s
}
XCTAssertEqual(expected, mutated)
}
func testIsAllWhitespace() {
let testString1 = ""
let testString2 = " "
let testString3 = "\n"
let testString4 = "\n "
let testString5 = " \n "
let testString6 = " \n"
let testString7 = "\r"
let testString8 = "\r "
let testString9 = " \r "
let testString10 = " \r"
let testString11 = "\r\n"
let testString12 = "\r\n "
let testString13 = " \r\n "
let testString14 = " \r\n"
XCTAssert(testString1.isAllWhitespace())
XCTAssert(testString2.isAllWhitespace())
XCTAssert(testString3.isAllWhitespace())
XCTAssert(testString4.isAllWhitespace())
XCTAssert(testString5.isAllWhitespace())
XCTAssert(testString6.isAllWhitespace())
XCTAssert(testString7.isAllWhitespace())
XCTAssert(testString8.isAllWhitespace())
XCTAssert(testString9.isAllWhitespace())
XCTAssert(testString10.isAllWhitespace())
XCTAssert(testString11.isAllWhitespace())
XCTAssert(testString12.isAllWhitespace())
XCTAssert(testString13.isAllWhitespace())
XCTAssert(testString14.isAllWhitespace())
}
}