RandomizedTesting.Generators 2.7.8

dotnet add package RandomizedTesting.Generators --version 2.7.8
NuGet\Install-Package RandomizedTesting.Generators -Version 2.7.8
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="RandomizedTesting.Generators" Version="2.7.8" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add RandomizedTesting.Generators --version 2.7.8
#r "nuget: RandomizedTesting.Generators, 2.7.8"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install RandomizedTesting.Generators as a Cake Addin
#addin nuget:?package=RandomizedTesting.Generators&version=2.7.8

// Install RandomizedTesting.Generators as a Cake Tool
#tool nuget:?package=RandomizedTesting.Generators&version=2.7.8

Randomized Testing

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This is a C# port of the only the generators from the Java randomizedtesting library.

In addition to the random generators, the RandomExtensions class contains several useful low-level extension methods for generating numbers, text (html-like, regex-like, unicode, realistic unicode, plain ASCII), random picks from collections, or random regular expression instances.

Why would you want tests to have random data? This is to fill situations where it is not practical to test the entire range of values in a single test run, for example, with applications that analyze text. Tests can instead be designed to provide different input every time they run to catch edge cases that are difficult to test for. Generating random data also has many other purposes, such as quickly generating a set of text files to benchmark with without having to store several hundred MB worth of files (since the same random seed will always generate the same data).

Random Generator Examples

// Create a System.Random instance
Random random = new Random();

// Create a random bool
bool boolValue = random.NextBoolean();

// Create a random long
long longValue = random.NextInt64();

// Create a random long between 10 (inclusive) and 100 (inclusive)
long longRangeValue = random.NextInt64(minValue: 10, maxValue: 100);

// Create a random float
float floatValue = random.NextSingle();

// Create a random BigInteger (from System.Numerics)
BigInteger bigIntValue = random.NextBigInteger();

// Pick a random KeyValuePair from a generic dictionary
var dictionary = new Dictionary<string, string>
{
    ["one"] = "oneValue",
    ["two"] = "twoValue",
    ["three"] = "threeValue",
    ["four"] = "fourValue",
    ["five"] = "fiveValue",
};
KeyValuePair<string, string> kvp = random.NextFrom(dictionary);

// Pick a random element from an array
var array = new int[] { 1, 4, 7, 10, 14, 74, 136 };
var arrayElement = random.RandomFrom(array);

// Create a random string (plain ASCII)
string asciiValue = random.NextSimpleString(maxLength: 15);

// Create a random string with specific chars
string specValue = random.NextSimpleStringRange(minChar: 'A', maxChar: 'F', maxLength: 10);

// Create a random Unicode string (may contain surrogate pairs)
string unicodeValue = random.NextUnicodeString(maxLength: 20);

// Create a random realistic Unicode string (random characters picked from the same Unicode block)
string realUnicodeValue = random.NextRealisticUnicodeString(maxLength: 30);

// Fill part of a char[] with random Unicode characters
char[] chars = "The quick brown fox jumped over the lazy dog.".ToCharArray();
random.NextFixedLengthUnicodeString(chars, startIndex: 8, length: 20);

// Generate a random regex-like string
string regexLike = random.NextRegexishString(maxLength: 20);

// Generate a random HTML-like string
string htmlLike = random.NextHtmlishString(numElements: 144);

// Randomly recase a string
string toRecase = "This Is A Pascal Cased String";
string recased = random.NextStringRecasing(toRecase);

// Generate a random Regex that compiles
Regex pattern = random.NextRegex();

Building and Testing

To build the project from source, see the Building and Testing documentation.

Saying Thanks

If you find this library to be useful, please star us on GitHub and consider a financial sponsorship so we can continue bringing you great free tools like this one.

GitHub Sponsors

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net45 is compatible.  net451 was computed.  net452 was computed.  net46 was computed.  net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.
  • .NETFramework 4.5

    • J2N (>= 2.0.0)
  • .NETStandard 2.0

    • J2N (>= 2.0.0)

NuGet packages (2)

Showing the top 2 NuGet packages that depend on RandomizedTesting.Generators:

Package Downloads
Lucene.Net.TestFramework

Framework for testing Lucene.NET-based applications using NUnit. Documentation: https://lucenenet.apache.org/docs/4.8.0-beta00016/api/test-framework/overview.html This package is part of the Lucene.NET project: https://www.nuget.org/packages/Lucene.Net/4.8.0-beta00016

RandomizedTesting

This is a package dependency that is not meant to be referenced directly. Please use https://www.nuget.org/packages/RandomizedTesting.Generators instead.

GitHub repositories (1)

Showing the top 1 popular GitHub repositories that depend on RandomizedTesting.Generators:

Repository Stars
apache/lucenenet
Apache Lucene.NET
Version Downloads Last updated
2.7.8 61,830 1/15/2022
2.7.8-beta-0002 11,547 10/24/2021
2.7.8-beta-0001 10,435 4/20/2021