FsCheck
Bogus
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FsCheck | Bogus | |
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11 | 27 | |
1,129 | 8,156 | |
0.7% | - | |
8.1 | 8.3 | |
4 days ago | 19 days ago | |
F# | C# | |
BSD 3-clause "New" or "Revised" License | GNU General Public License v3.0 or later |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
FsCheck
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Is there a tool that could be used to generate fake unit test cases automatically for code coverage? (read description before downvoting)
https://fscheck.github.io/FsCheck/ can hopefully generate random inputs automatically or with low effort for many methods to get your code coverage up. You don’t even need to write real tests right now, just call the methods with the random inputs and check they don’t fail.
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Typesafe F# configuration binding
At Symbolica we're building a symbolic execution service that explores every reachable state of a user's program and verifies assertions at each of these states to check that the program is correct. By default it will check for common undefined behaviours, such as out-of-bounds memory reads or divide by zero, but it can also be used with custom, application specific, assertions too just like the kind you'd write in a unit test. Seen from this perspective it's kind of like FsCheck (or Haskell's QuickCheck or Python's Hypothesis), but much more exhaustive and without the randomness.
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Does anybody know a simple algorithm for generating unit tests given a function's code?
Maybe something like QuickCheck, a quick search gave me this library for .NET https://github.com/fscheck/FsCheck
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When do you consider your unit tests be "enough"?
Because of the above I've generally been using tools like Stryker.NET and FsCheck to augment my testing suite. I'm still doing unit testing to find the more obvious "I haven't had my coffee, let's make sure I'm doing what I think I'm doing" bugs. I'm just using things like mutation testing, property testing, fuzzing, etc. to find the deeper issues in my code. There's a ton of libraries out there, including one that I've built for myself to help with testing but FsCheck and Stryker are just beautiful. And if you're interested in fuzzing, SharpFuzz is a great option. But that one isn't quite as easy of an on ramp compared to the other two that I mentioned.
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What are you working on? (2021-06)
Looks cool. Is there a reason why you didn't use FsCheck or Hedgehog? They're built to generate random data for testing, and can return the seed if a test fails so you can rerun the test with the exact same data once you figure out what the problem is - which is useful if the failure condition is rare.
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Mutation Testing
Haskell has QuickCheck and Hedgehog, and dotnet has both as well. F# is favored, but there's C# interop.
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In praise of property-based testing
FsCheck is probably most popular
Bogus
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Bogus custom Dataset
Bogus NuGet package is fake data generator which can be helpful for populating tables in a database and testing purposes. If a database is not used and Bogus populates list of data each time an application runs, the data is random, never the same. Also, the random data generated by Bogus may not meet a developer’s requirements.
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C# User-defined explicit and implicit conversion operators
A list is populated with NuGet package Bogus.
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Windows form move items up/down in ListView and more
Other project either mocked data using NuGet package Bogus or a json file.
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Best practices for organising Mock Data & Repositories in Testing
To do all this you need test though...and that's where ]Bogus](https://github.com/bchavez/Bogus) and Auto Bogus come in handy. They both generate semi random test data that you can use to populate whatever method you've decided to use. You can setup rules so for specific fields, they have built in generators for common things like names and addresses. Auto Bogus can be used to populate large/complicated objects with data automatically (it can be slow if you don't use .WithRecursiveDepth() or.WithTreeDepth() )
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Do you guys mock everything in your Unit Tests?
Bogus - For creating fake data Verify - Snapshot testing for .NET MELT - For testing ILogger usage Stryker - Mutation Testing for .NET TestContainers - run docker programmatically in integration tests
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WinForms communicate between forms
To keep things interesting Bogus library is used to create a Person instance.
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The art of Deconstructing
Usage with mocked data using Bogus NuGet package.
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Using EF Core and Bogus
Going forward, the secret to knowing were to find data is to read Bogus information in the readme file which goes into depth were to find paths to generate data. This is very important as you can clash with their classes e.g. you create a Person class and guess what, Bogus has a Person class. This is were knowing how to work with using statements and using statements with aliasing.
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Learn DateOnly & TimeOnly
Code samples for Json.net which as of version 13.0.2 now supports DateOnly and TimeOnly. Three code samples are used to show interactions with Bogus and Microsoft.Data.SqlClient which is most likely used to work with json data.
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Is there a tool that could be used to generate fake unit test cases automatically for code coverage? (read description before downvoting)
In terms of generating test cases, I've come across this before: https://github.com/bchavez/Bogus
What are some alternatives?
AutoFixture - AutoFixture is an open source library for .NET designed to minimize the 'Arrange' phase of your unit tests in order to maximize maintainability. Its primary goal is to allow developers to focus on what is being tested rather than how to setup the test scenario, by making it easier to create object graphs containing test data.
faker-cs - C# port of the Ruby Faker gem (http://faker.rubyforge.org/)
Moq - Repo for managing Moq 4.x [Moved to: https://github.com/moq/moq]
NBuilder - Rapid generation of test objects in .NET
FakeItEasy - The easy mocking library for .NET
GenFu - GenFu is a library you can use to generate realistic test data. It is composed of several property fillers that can populate commonly named properties through reflection using an internal database of values or randomly created data. You can override any of the fillers, give GenFu hints on how to fill them.
NSubstitute - A friendly substitute for .NET mocking libraries.
xUnit - xUnit.net is a free, open source, community-focused unit testing tool for .NET.
NUnit - NUnit Framework
SpecFlow - #1 .NET BDD Framework. SpecFlow automates your testing & works with your existing code. Find Bugs before they happen. Behavior Driven Development helps developers, testers, and business representatives to get a better understanding of their collaboration
Expecto - A smooth testing lib for F#. APIs made for humans! Strong testing methodologies for everyone!