fluentassertions | extensive set of extension methods | Unit Testing library

by fluentassertions C# Version: 6.11.0 License: Apache-2.0

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kandi X-RAY | fluentassertions Summary

fluentassertions is a C# library typically used in Telecommunications, Media, Media, Entertainment, Testing, Unit Testing applications. fluentassertions has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

A very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit tests. Targets .NET Framework 4.7, as well as .NET Core 2.1, .NET Core 3.0, .NET Standard 2.0 and 2.1. See for background information, usage documentation, an extensibility guide, support information and more tips & tricks.

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fluentassertions has a medium active ecosystem.

It has 3276 star(s) with 499 fork(s). There are 70 watchers for this library.

There were 1 major release(s) in the last 12 months.

There are 86 open issues and 830 have been closed. On average issues are closed in 141 days. There are 7 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of fluentassertions is 6.11.0

Quality

fluentassertions has 0 bugs and 0 code smells.

Security

fluentassertions has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

fluentassertions code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

fluentassertions is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

fluentassertions releases are available to install and integrate.

Installation instructions are not available. Examples and code snippets are available.

fluentassertions saves you 3467 person hours of effort in developing the same functionality from scratch.

It has 7462 lines of code, 0 functions and 657 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

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fluentassertions Key Features

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fluentassertions Examples and Code Snippets

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Community Discussions

Trending Discussions on fluentassertions

Cannot read dynamic properties with FluentAssertions

FluentAssertions for equality of objects graph with array - approximate equality

SpecFlow tests no longer appear in Visual Studio 2019 Test Explorer after PackageReference migration

FluentAssertions 6 ObjectGraph compare Enum to String

How do I set up this unit test to test some types explicitly?

how to combine multiple assertion using FluentAssertions

Compare contents of System.Text.JsonDocument C# in unit test

xUnit testing error (CS5001) Program does not contain a static Main method suitable for an entry point

Fluent assertion Should().ThrowExactlyAsync should fail for derived types, but it doesn't

Dynamically Test All Entity Framework Core DbContext DbSet<> objects with xUnit

QUESTION

Cannot read dynamic properties with FluentAssertions

Asked 2022-Mar-30 at 14:14

I am using XUnit and fluentassertions in c sharp for my unit tests. Below is where I get a dynamic type, convert a dynamic object to that dynamic type and try to do an assertion:

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ANSWER

Answered 2022-Mar-30 at 11:22

It's a limitation in .NET. It does not support extension methods for dynamic objects.

A workaround is to cast myObject into an object, such that the appropriate overload of Should can be determined at compile time.

Some related issues:

Source https://stackoverflow.com/questions/71675932

QUESTION

FluentAssertions for equality of objects graph with array - approximate equality

Asked 2022-Mar-23 at 10:03

I am trying to write a set of tests for an API which returns a result in the following form

...

ANSWER

Answered 2022-Mar-23 at 10:03

You need to pair Using() with WhenTypeIs().

Source https://stackoverflow.com/questions/71585083

QUESTION

SpecFlow tests no longer appear in Visual Studio 2019 Test Explorer after PackageReference migration

Asked 2022-Feb-21 at 17:26

I did a recent migration of my company's legacy app from packages.config to PackageReferences. We have 5 projects: the main ASP.NET web app, a SQL connector model project, an xUnit test project, a FluentAssertions test project, and a SpecFlow project (and no I did not set this all up). My current goal was to move all of the packages.config to properly use NuGet in PackageReference in the csproj files for an eventual move from .NET Framework 4.6.1 to .NET Core. Unfortunately, we are not ready for such a move yet.

I have done the migration for all the projects. With some fiddling, all of them build and most run correctly. Our web project builds and runs (we still need proper smoke testing but it looks good so far). Our FluentAssertions and XUnit projects also build and run all of their tests flawlessly. We do have some warnings, but there is less of them then there was before this migration.

What is not working is the SpecFlow tests. Specifically, the SpecFlow tests are not being populated in the Test Explorer automatically in Visual Studio 2019. They were before this migration. We need these tests to run (for now) in our automated build process. We are fixing our technical debt in stages.

I have investigated online for the past couple of days and can make the following claims about our SpecFlow project:

We have NUnit3 added in the Extensions and it appears to be "functioning". Same with SpecFlow for Visual Studio 2019 extension.
We have all of the NUnit3, MSTest, and SpecFlow NuGet packages from before the migration (in the same versions) as NuGet references post-migration.
If I run the tests from the project's context menu, it says there are 0 tests run.

...

ANSWER

Answered 2022-Feb-17 at 13:22

If you still have the Visual Studio Extension (VSIX) for the NUnit Visual Studio Test Adapter (and it appears you do from your comment "We have NUnit3 added in the Extensions"), you need to disable or remove it. The VSIX adapter will be used over the Nuget packaged adapter and causes conflicts with the Nuget packaged adapter. The VSIX extension also shouldn't be used in VS 2017 or higher. You can check in Main Menu -> Tools-> Extensions and Updates and look for Nunit3TestAdapter.

Using VSIX extensions was the old way to use test adapters and runners. It was brittle because you had one version installed in VS that needed to support many different projects and the VS extensions framework is pretty convoluted with awkward hooks into the build life cycle. The new way is to package test adapters and runners as NuGet packages. There is nothing to install and Visual Studio finds the version-specific test adapter and runner libraries for your project besides your test assemblies. You need to use one or the other, and Nuget packages are preferred now, or Visual Studio will fight against you and you'll have issues similar to what you are seeing.
The Visual Studio Test Explorer cache sometimes gets out of whack. Try closing all copies of Visual Studio and cleaning its temp files and folders at C:\Users{$username}\AppData\Local\Temp\VisualStudioTestExplorerExtensions\
You might be running into an issue where the test process is running on the is selecting the wrong architecture of the adapter or other library during test discovery orchestration. Try changing the default processor architecture for tests (Main Menu Test -> Test Settings). Try changing x86 to x64 or vice versa.

Source https://stackoverflow.com/questions/71149857

QUESTION

FluentAssertions 6 ObjectGraph compare Enum to String

Asked 2022-Feb-15 at 22:42

With FluentAssertions 6 it seems you can longer verify if in a object graph if an Enum is equivalent to a string. Source: https://fluentassertions.com/upgradingtov6

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ANSWER

Answered 2022-Feb-15 at 18:56

Your expectation defines the Enum property as being a string, and the options you provide are used to instruct FA how the members of the expectation should be compared to the subject. So in this case, ComparingEnumsByName doesn't do anything since the property involved is a string. What you could do instead is to use an anonymous type as the expectation.

Source https://stackoverflow.com/questions/71131277

QUESTION

How do I set up this unit test to test some types explicitly?

Asked 2022-Jan-21 at 15:15

I have a test fixture for my CompositionRoot static class that pretty much just enumerates my Autofac IContainer's services and attempts to instantiate them. If it can instantiate them, that's a test pass. The goal is to ensure I did not forget to register new interfaces with my Autofac container.

However, some types that are registered consume types in their constructors that are not intended to be, or cannot be, registered with Autofac. For example I have a class that takes a string in its constructor. The way I inject this class into my code base is:

...

ANSWER

Answered 2022-Jan-21 at 15:15

What you'll need to do is:

Resolve types instead of services so you can exclude the types you want.
Remove duplicates (so if you have two things registered .As() you won't run that test twice).
Exclude Autofac types (because ILifetimeScope and IComponentContext are inherently registered and that shouldn't be part of your tests).

That LINQ looks like:

Source https://stackoverflow.com/questions/70795798

QUESTION

how to combine multiple assertion using FluentAssertions

Asked 2022-Jan-17 at 14:12

I came to know that through FluentAssertions library we can combine multiple assertion in a single like. Just want to know if below 2 assert can be combined in a single line?

...

ANSWER

Answered 2022-Jan-17 at 14:12

With the built-in assertions you can compare actionResult against an anonymous object.

Source https://stackoverflow.com/questions/70739206

QUESTION

Compare contents of System.Text.JsonDocument C# in unit test

Asked 2022-Jan-13 at 19:09

I feel like I'm taking crazy pills here... but how can I compare two JsonDocuments (or JsonElements or what have you) for JSON equality, i.e. same keys with same values?

To limit the scope, the ability to perform this comparison in a unit test is sufficient unto the day.

I have a unit test in which I want to compare the result of a function that returns a JsonDocument to some expected value. Things that don't work include using FluentAssertions.Json (because my type is not JObject), and comparing the value of GetRawText because I don't care about the whitespace.

I guess I could write the strings out and re-serialize them or something but this honestly feels like such a hack that I must be doing something wrong.

I understand the business logic of comparing them, I have seen the other questions like this and this. The first is much more in keeping with what I want, it's just an embarrassing result for C#... The second is not what I need at all.

...

ANSWER

Answered 2022-Jan-13 at 19:01

Thanks to @ChristophLütjen for identifying the fix I needed in this issue

Given two JsonDocuments I can compare them using FluentAssertions like this:

Source https://stackoverflow.com/questions/70701229

QUESTION

xUnit testing error (CS5001) Program does not contain a static Main method suitable for an entry point

Asked 2021-Dec-27 at 14:08

Good day/evening! I am trying to do a test program in xUnit with the following code in Visual Studio Code:

...

ANSWER

Answered 2021-Dec-27 at 14:08

When you have installed xUnit to your project, the compiler will Generate Program File with a Main method automatically configured to run the given tests.
This configuration in .csproj file will prevent that.

Source https://stackoverflow.com/questions/70495898

QUESTION

Fluent assertion Should().ThrowExactlyAsync should fail for derived types, but it doesn't

Asked 2021-Nov-17 at 15:05

The following Func delegate throws an ArgumentNullException:

...

ANSWER

Answered 2021-Nov-17 at 15:01

Since ThrowExactlyAsync returns a Task, you're not actually doing anything unless you await it:

Source https://stackoverflow.com/questions/70006484

QUESTION

Dynamically Test All Entity Framework Core DbContext DbSet<> objects with xUnit

Asked 2021-Nov-09 at 16:40

I'm using xUnit and FluentAssertions to write an integration test to validate that our models are correctly mapped. We have dozens of EF contexts and for each context, there are one or more DbSet<> properties like this:

...

ANSWER

Answered 2021-Nov-09 at 15:29

Exception is thrown because GetGenericTypeDefinition() does not work on non-generic types, so you should first check if type is actually generic before invoking it:

Source https://stackoverflow.com/questions/69900462

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