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https://github.com/dimitrietataru/csharp-unit-testing

.NET - Unit Testing
https://github.com/dimitrietataru/csharp-unit-testing

arrange-act-assert asp-net-core-web-api assertions bogus code-coverage coverage-report csharp dot-net-core fluentassertions given-when-then moqui-framework net-5 net-core-3-1 nunit-framework reportgenerator shouldly unit-testing xunit-framework

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.NET - Unit Testing

Host: GitHub
URL: https://github.com/dimitrietataru/csharp-unit-testing
Owner: dimitrietataru
License: mit
Created: 2020-02-04T10:59:59.000Z (over 4 years ago)
Default Branch: master
Last Pushed: 2020-12-15T00:04:45.000Z (almost 4 years ago)
Last Synced: 2023-04-29T08:11:31.352Z (over 1 year ago)
Topics: arrange-act-assert, asp-net-core-web-api, assertions, bogus, code-coverage, coverage-report, csharp, dot-net-core, fluentassertions, given-when-then, moqui-framework, net-5, net-core-3-1, nunit-framework, reportgenerator, shouldly, unit-testing, xunit-framework
Language: C#
Homepage:
Size: 286 KB
Stars: 3
Watchers: 2
Forks: 0
Open Issues: 0
Metadata Files:
- Readme: README.md
- License: LICENSE.txt

Awesome Lists containing this project

README

        # C# Unit Testing

![Coverage](https://github.com/dimitrietataru/csharp-unit-testing/blob/master/Coverage.png)

## Table of contents

* [NuGet packages](#nuget-packages)

* [Syntax](#syntax)

  * [Given-When-Then](#given-when-then-pattern)

  * [Arrange-Act-Assert](#arrange-act-assert-pattern)

  * [Moq](#moq-setup-and-verify)

  * [Assertions](#assertions)

* [Collect code coverage](#collect-code-coverage)

* [Generate code coverage report](#generate-code-coverage-report)

## NuGet packages

- **Frameworks**

  - [NUnit](https://www.nuget.org/packages/NUnit)

  - [xUnit](https://www.nuget.org/packages/xunit)

- **Mocking**

  - [Moq](https://www.nuget.org/packages/Moq)

- **Code coverage**

  - [coverlet.collector](https://www.nuget.org/packages/coverlet.collector)

  - [ReportGenerator](https://www.nuget.org/packages/ReportGenerator)

- **Utils**

  - [Bogus](https://www.nuget.org/packages/Bogus)

  - [Shouldly](https://www.nuget.org/packages/shouldly)

  - [FluentAssertions](https://www.nuget.org/packages/FluentAssertions)

``` powershell

PM> Install-Package Bogus -Version 32.0.2

PM> Install-Package coverlet.collector -Version 1.3.0

PM> Install-Package FluentAssertions -Version 5.10.3

PM> Install-Package Microsoft.NET.Test.Sdk -Version 16.8.3

PM> Install-Package Moq -Version 4.15.2

PM> Install-Package ReportGenerator -Version 4.8.1

PM> Install-Package Shouldly -Version 4.0.1

# NUnit

PM> Install-Package NUnit -Version 3.12.0

PM> Install-Package NUnit3TestAdapter -Version 3.17.0

# xUnit

PM> Install-Package xunit -Version 2.4.1

PM> Install-Package xunit.runner.visualstudio -Version 2.4.3

```

## Syntax

### Given-When-Then pattern

[Martin Fowler's blog](https://www.martinfowler.com/bliki/GivenWhenThen.html)

### Arrange-Act-Assert pattern

[Docs.Microsoft](https://docs.microsoft.com/en-us/visualstudio/test/unit-test-basics?view=vs-2019#write-your-tests)

### Moq setup and verify

``` csharp

// Setup async method when it returns data

mockService

    .Setup(_ => _.GetAsync(It.IsAny()))

    .ReturnsAsync(It.IsAny())

    .Verifiable();

// Setup async method when it executes without a return type

mockService

    .Setup(_ => _.RunAsync())

    .ReturnsAsync(Task.CompletedTask)

    .Verifiable();

// Setup async method when it throws an exception

mockService

    .Setup(_ => _.RunAsync(It.IsAny()))

    .Throws()

    .Verifiable();

// Verify all service methods, marked as 'Verifiable'

mockService.VerifyAll();

// Verify individual service method

mockService.Verify(_ => _.GetAsync(It.IsAny()), Times.Once);

mockService.Verify(_ => _.RunAsync(), Times.Exactly(2));

mockService.Verify(_ => _.RunAsync(It.IsAny()), Times.Never);

```

### Assertions

``` csharp

// NUnit

Assert.That(result, Is.InstanceOf());

var apiResponse = result as OkObjectResult;

Assert.That(apiResponse.StatusCode, Is.EqualTo((int)HttpStatusCode.OK));

// xUnit

var apiResponse = Assert.IsType(result);

Assert.Equal((int)HttpStatusCode.OK, apiResponse.StatusCode);

// FluentAssertions

result

    .Should().BeOfType("because we return content")

    .Which.StatusCode.Should().Be((int)HttpStatusCode.OK);

    

// Shouldly

result.ShouldSatisfyAllConditions(

    () => result.ShouldBeOfType(),

    () => (result as OkObjectResult).StatusCode.ShouldBe((int)HttpStatusCode.OK));

```

## Collect code coverage

### Install *coverlet.collector* NuGet package

``` powershell

PM> Install-Package coverlet.collector -Version 1.3.0

```

### *TestProject.csproj* configuration

``` xml

  all

  runtime; build; native; contentfiles; analyzers; buildtransitive

```

### Collector configuration. Add a file (e.g. *runsettings*) anywhere in the solution/project

```  xml

  

    

      

        

          json,cobertura

          true

          false

          **/**/Program.cs,**/**/Startup.cs,**/Dir/SubDir/*.cs

        

      

    

  

  

    

      

    

  

```

### Run tests and collect data

``` powershell

PM> dotnet test --collect:"XPlat Code Coverage" --settings .\runsettings

PM> dotnet test .\Specific.Test.Project --collect:"XPlat Code Coverage" --settings .\Specific.Test.Project\runsettings

```

## Generate Code Coverage Report

### Install *ReportGenerator* NuGet package

``` powershell

PM> Install-Package ReportGenerator -Version 4.8.1

```

### Generate reports

[ReportGenerator usage page](https://danielpalme.github.io/ReportGenerator/usage.html)

``` powershell

PM> dotnet $(UserProfile)\.nuget\packages\reportgenerator\x.y.z\tools\netcoreapp3.0\ReportGenerator.dll "-reports:coverage.xml" "-targetdir:coveragereport" -reporttypes:Html

PM> dotnet $(UserProfile)\.nuget\packages\reportgenerator\x.y.z\tools\netcoreapp3.0\ReportGenerator.dll "-reports:coverage.xml" "-targetdir:coveragereport" -reporttypes:Badges

```

``` powershell

# CSharp.UnitTesting.Api NUnit

PM> dotnet $(UserProfile)\.nuget\packages\reportgenerator\4.8.1\tools\netcoreapp3.0\ReportGenerator.dll "-reports:CSharp.UnitTesting.Api.Nunit.Test\TestResults\*\coverage.cobertura.xml" "-targetdir:_CoverageReport\Api\NUnit" "-historydir:_CoverageReport\_History\Api\NUnit" -reporttypes:Html

# CSharp.UnitTesting.Api xUnit

PM> dotnet $(UserProfile)\.nuget\packages\reportgenerator\4.8.1\tools\netcoreapp3.0\ReportGenerator.dll "-reports:CSharp.UnitTesting.Api.Xunit.Test\TestResults\*\coverage.cobertura.xml" "-targetdir:_CoverageReport\Api\xUnit" "-historydir:_CoverageReport\_History\Api\xUnit" -reporttypes:Html

```