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//
// InputTextFormatterTests.swift
// MullvadVPNTests
//
// Created by pronebird on 10/04/2020.
// Copyright © 2025 Mullvad VPN AB. All rights reserved.
//
import XCTest
@MainActor
class InputTextFormatterTests: XCTestCase {
private let accountNumber = "12345678"
private var inputTextFormatter: InputTextFormatter!
private let configuration = InputTextFormatter.Configuration(
allowedInput: .numeric,
groupSeparator: " ",
groupSize: 4,
maxGroups: 4
)
override func setUp() async throws {
inputTextFormatter = InputTextFormatter(
string: accountNumber,
configuration: configuration
)
}
override func tearDown() async throws {
inputTextFormatter = nil
}
func testInitialValue() {
XCTAssertEqual(inputTextFormatter.formattedString, "1234 5678")
XCTAssertEqual(inputTextFormatter.caretPosition, 9)
}
func testReplacingValue() {
inputTextFormatter.replace(with: "00000000")
XCTAssertEqual(inputTextFormatter.formattedString, "0000 0000")
XCTAssertEqual(inputTextFormatter.caretPosition, 9)
}
func testRemovingSeparator() {
guard let range = inputTextFormatter.formattedString.range(withOffset: 4, length: 1) else {
return XCTAssertNil("Out of range", file: #file, line: #line)
}
inputTextFormatter.replaceCharacters(
in: range,
replacementString: "",
emptySelection: true
)
XCTAssertEqual(inputTextFormatter.formattedString, "1235 678")
XCTAssertEqual(inputTextFormatter.caretPosition, 3)
}
func testRemovingSeparatorRange() {
guard let range = inputTextFormatter.formattedString.range(withOffset: 4, length: 1) else {
return XCTAssertNil("Out of range", file: #file, line: #line)
}
inputTextFormatter.replaceCharacters(
in: range,
replacementString: "",
emptySelection: false
)
XCTAssertEqual(inputTextFormatter.formattedString, "1234 5678")
XCTAssertEqual(inputTextFormatter.caretPosition, 4)
}
func testRemovingRange() {
guard let range = inputTextFormatter.formattedString.range(withOffset: 7, length: 2) else {
return XCTAssertNil("Out of range", file: #file, line: #line)
}
inputTextFormatter.replaceCharacters(
in: range,
replacementString: "",
emptySelection: false
)
XCTAssertEqual(inputTextFormatter.formattedString, "1234 56")
XCTAssertEqual(inputTextFormatter.caretPosition, 7)
}
func testInserting() {
guard let range = inputTextFormatter.formattedString.range(withOffset: 5, length: 0) else {
return XCTAssertNil("Out of range", file: #file, line: #line)
}
inputTextFormatter.replaceCharacters(
in: range,
replacementString: "0000",
emptySelection: true
)
XCTAssertEqual(inputTextFormatter.formattedString, "1234 0000 5678")
XCTAssertEqual(inputTextFormatter.caretPosition, 9)
}
func testReplacingRange() {
guard let range = inputTextFormatter.formattedString.range(withOffset: 5, length: 4) else {
return XCTAssertNil("Out of range", file: #file, line: #line)
}
inputTextFormatter.replaceCharacters(
in: range,
replacementString: "0000",
emptySelection: false
)
XCTAssertEqual(inputTextFormatter.formattedString, "1234 0000")
XCTAssertEqual(inputTextFormatter.caretPosition, 9)
}
}
private extension String {
func range(withOffset offset: Int, length: Int) -> Range<String.Index>? {
guard let start = index(startIndex, offsetBy: offset, limitedBy: endIndex),
let end = index(start, offsetBy: length, limitedBy: endIndex)
else {
return nil
}
return start..<end
}
}
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