Last Updated: 22 November 2021

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Install-Package ParkSquare.Testing.Helpers

Test Data Generators

Build Status

Background

This package contains various fluent style data generators and extension methods for constrained non-determinism in your unit tests, integration tests, general automation projects and mock-ups. These are great for generating values within certain boundaries, or for creating real-world dummy data that will pass validation algorithms.

Bank Account Number

Bank account number generated by this will pass LUHN checksum and conform to UK bank account standards.

var accountNumber = AccountNumberGenerator.AnyValidAccountNumber();
Console.WriteLine(accountNumber);

Credit Card Generator

Card numbers will pass the LUHN checksum, and can specifically generate debit or credit card numbers, or ones that meet the validation checks for Visa or Mastercard.

Console.WriteLine(CreditCardGenerator.AnyCardNumber());
Console.WriteLine(CreditCardGenerator.AnyCreditCardNumber());
Console.WriteLine(CreditCardGenerator.AnyDebitCardNumber());
Console.WriteLine(CreditCardGenerator.AnyMastercardCreditCardNumber());
Console.WriteLine(CreditCardGenerator.AnyMastercardDebitCardNumber());
Console.WriteLine(CreditCardGenerator.AnyVisaCreditCardNumber());
Console.WriteLine(CreditCardGenerator.AnyVisaDebitCardNumber());

Sort Code Generator

This generates a valid UK six-digit sort code, with or without formatting.

Console.WriteLine(SortCodeGenerator.AnyValidSortCode());
Console.WriteLine(SortCodeGenerator.AnyValidSortCodeWithDashes());

Random Array Item

var testArry = new[] {"One", "Two", "Three"};
var randomItem = testArry.AnyElement();
Console.WriteLine(randomItem);

Boolean Generator

Console.WriteLine(BooleanGenerator.IsCoinTossHeads());

Byte Generator

Console.WriteLine(ByteGenerator.AnyByte());

foreach (var b in ByteGenerator.AnyByteArrayOfSize(10))
{
	Console.WriteLine(b);
}

Double Generator

Console.WriteLine(DoubleGenerator.AnyDouble());
Console.WriteLine(DoubleGenerator.AnyPositiveDouble());
Console.WriteLine(DoubleGenerator.AnyNegativeDouble());

Char Generator

Console.WriteLine(CharGenerator.RandomAlpha());
Console.WriteLine(CharGenerator.RandomAlphaNumeric());
Console.WriteLine(CharGenerator.RandomChar());
Console.WriteLine(CharGenerator.RandomDigit());

Dates & Times

Dates and times relative to current date/time

Console.WriteLine(DateTime.Now.AnyTime());
Console.WriteLine(DateTime.Now.AnyDifferentTime());
Console.WriteLine(DateTime.Now.AnyTimeOtherThan(new TimeSpan(1, 2, 3, 4)));

Console.WriteLine(DateTimeGenerator.FirstDayOfThisMonth());
Console.WriteLine(DateTimeGenerator.FirstDayOfMonth(DateTime.Now));
Console.WriteLine(DateTimeGenerator.LastDayOfThisMonth());
Console.WriteLine(DateTimeGenerator.LastDayOfMonth(DateTime.Now));
Console.WriteLine(DateTimeGenerator.Today());
Console.WriteLine(DateTimeGenerator.Tomorrow());

General date/time generators

Methods ending in 'Date' will have midnight (00:00:00) as the time portion, ones ending in 'DateTime' will have a random time.

Console.WriteLine(DateTimeGenerator.AnyDate());
Console.WriteLine(DateTimeGenerator.AnyTime());
Console.WriteLine(DateTimeGenerator.AnyDateAfter(DateTime.Now));
Console.WriteLine(DateTimeGenerator.AnyDateBefore(DateTime.Now));
Console.WriteLine(DateTimeGenerator.AnyDateBetween(DateTime.Now, new DateTime(2099, 1, 1)));
Console.WriteLine(DateTimeGenerator.AnyDateExcept(DateTime.Now));
Console.WriteLine(DateTimeGenerator.AnyDateTime());
Console.WriteLine(DateTimeGenerator.AnyDateTimeAfter(DateTime.Now));
Console.WriteLine(DateTimeGenerator.AnyDateTimeExcept(DateTime.Now));

Pair of dates

These can be useful when you need a time period with a set start and end date.

var pair1 = DateTimeGenerator.AnyPairOfDateTimes();
Console.WriteLine(pair1.Min + ", " + pair1.Max);

var pair2 = DateTimeGenerator.AnyPairOfDates();
Console.WriteLine(pair2.Min + ", " + pair2.Max);

var relative1 = DateTimeGenerator.AnyRelativeDateTimes();
Console.WriteLine("Now: " + relative1.Now + " Past: " + relative1.InThePast + " Future: " + relative1.InTheFuture);

Decimal Generator

var d1 = 1.23M;
Console.WriteLine(d1.LimitedBy(1, 2));
Console.WriteLine(d1.ReverseSign());
Console.WriteLine(d1.Absolute());

Console.WriteLine(DecimalGenerator.AnyCurrencyAmount());
Console.WriteLine(DecimalGenerator.AnyCurrencyAmountGreaterThan(100));
Console.WriteLine(DecimalGenerator.AnyDecimalInHalfOpenRange(10, 100));
Console.WriteLine(DecimalGenerator.AnyPositiveCurrencyAmount());

Email Address Generator

This will generate e-mail addresses that will pass most e-mail validation algorithms.

Console.WriteLine(EmailAddressGenerator.AnyEmailAddress());

Random Items (Enumerable)

var e1 = new[] {"one", "two", "three", "four", "five"};
var e2 = e1.Shuffle();
foreach (var e in e2) Console.WriteLine(e);

Console.WriteLine(e1.AnyItem());

e1.ForEach(Console.WriteLine);

Generate Lists & Collections

var e3 = EnumerableGenerator.BoundedSequence(10, CreateNewThing);
e3.ForEach(Console.WriteLine);

var e4 = EnumerableGenerator.UniqueBoundedSequence(10, CreateNewThing);
e4.ForEach(Console.WriteLine);

Random Enum Value

Console.WriteLine(EnumGenerator.AnyEnumValue<ThingEnumeration>());
Console.WriteLine(EnumGenerator.AnyEnumValueExcept(ThingEnumeration.Hello));
Console.WriteLine(EnumGenerator.AnyEnumValueIn(ThingEnumeration.Hello, ThingEnumeration.World));

Integer Generator

Console.WriteLine(IntegerGenerator.AnyInteger());
Console.WriteLine(IntegerGenerator.AnyIntegerInHalfOpenRange(100, 1000));

var i1 = IntegerGenerator.AnyIntegerListOfSize(10);
i1.ForEach(Console.WriteLine);

var i2 = IntegerGenerator.UniquePositiveIntegerListOfSize(10);
i2.ForEach(Console.WriteLine);

Ip Address Generator

This will generate valid IP v4 addresses.

Console.WriteLine(IpAddressGenerator.AnyIpAddress());
IpAddressGenerator.GenerateRandomNonRepeatingIpAddresses(10).ForEach(Console.WriteLine);

Luhn Generator

This will generate a number of the required length, where the last digit is a valid Luhn check digit. This is the algorithm commonly used by bank accounts and credit card numbers, so if the standard UK lengths are not suitable, then use this instead.

Console.WriteLine(LuhnGenerator.AnyValidNumber(10));
Console.WriteLine(LuhnGenerator.CalculateCheckDigit("12345"));

Name Generator

These generators will create random names and titles, with the ability to have specific male or female forenames if required.

Console.WriteLine(NameGenerator.AnyName());
Console.WriteLine(NameGenerator.AnyAdultTitle());
Console.WriteLine(NameGenerator.AnyChildTitle());
Console.WriteLine(NameGenerator.AnyFemaleForename());
Console.WriteLine(NameGenerator.AnyMaleForename());
Console.WriteLine(NameGenerator.AnyForename());
Console.WriteLine(NameGenerator.AnyMaleName());
Console.WriteLine(NameGenerator.AnyFemaleName());
Console.WriteLine(NameGenerator.AnySurname());
Console.WriteLine(NameGenerator.AnyTitle());

National Insurance Number Generator (NINO)

This will generate a valid UK National Insurance number, with or without formatting.

Console.WriteLine(NationalInsuranceNumberGenerator.Any());
Console.WriteLine(NationalInsuranceNumberGenerator.AnyFormatted());

Postcode Generator

This will generate a valid UK postcode that is either a genuine postcode somewhere in the country, or one that may not necessarily be real but which passes most standard validation algorithms.

Console.WriteLine(PostcodeGenerator.AnyPostcode());
Console.WriteLine(PostcodeGenerator.AnyValidPostcode());

Short Generator

Console.WriteLine(ShortGenerator.AnyShort());
Console.WriteLine(ShortGenerator.AnyShortInHalfOpenRange(10, 100));

String Generator

Console.WriteLine(StringGenerator.AnyNonNullString());
Console.WriteLine(StringGenerator.AnyEmptyOrWhitespaceString());
Console.WriteLine(StringGenerator.AnyStringOfSizeAndCase(100, CaseType.TitleCase));
Console.WriteLine(StringGenerator.SequenceOfAlphaNumerics(10));
Console.WriteLine(StringGenerator.SequenceOfAlphas(10));
Console.WriteLine(StringGenerator.SequenceOfDigits(10));

Telephone Number Generator

This can generate a landline or mobile telephone number that will pass validation checks.

Console.WriteLine(TelephoneNumberGenerator.AnyLandlineNumber());
Console.WriteLine(TelephoneNumberGenerator.AnyMobileNumber());
Console.WriteLine(TelephoneNumberGenerator.AnyTelephoneNumber());

User Agent Generator

This will generate a user agent string.

Console.WriteLine(UserAgentGenerator.AnyUserAgent());
Console.WriteLine(UserAgentGenerator.GoogleBotUserAgent());