TestLite 1.2.0

There is a newer version of this package available.
See the version list below for details.
dotnet add package TestLite --version 1.2.0
NuGet\Install-Package TestLite -Version 1.2.0
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="TestLite" Version="1.2.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add TestLite --version 1.2.0
#r "nuget: TestLite, 1.2.0"
#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 TestLite as a Cake Addin
#addin nuget:?package=TestLite&version=1.2.0

// Install TestLite as a Cake Tool
#tool nuget:?package=TestLite&version=1.2.0

TestLite

Test Lite is a small library for writing well-structured, clear-cut 3A tests.

Build Status Coverage Status Nuget License: MIT pull requests: welcome

Purpose

Test Lite helps to enforce the 3A pattern for unit tests. Each test can be written in the following format: Test.Arrange().Act().Assert(). The fluent API makes it possible to define test methods as expression-bodied members.

Usage

The Arrange method expects a function which returns the unit under test, and optionally some additional parameter(s). If additional parameters are present, the return type should be a value tuple, e.g. return (underTest, parameter);. If no arrangement is needed, the Arrange method can be called without any parameters.

The Act method expects a function which takes the arguments determined by the previous Arrange method, and returns a result. This result, again, can be a value tuple if multiple return values are needed. Any exception thrown be the function passed to Act will be caught and can be validated later.

The Assert method has two overloads. One of them takes a validator function, which can be used to declare assertions. In this case the input type is an ActResult class. The other variant is parameterless and can be used to chain validation methods. A generic Validate method can also be chained to run custom validations on the result. In this case the input is not an ActResult instance, but the value passed from the Act method.

Examples

A simple test case which only validates if the Act section did not threw any exception (using Fluent Assertions):

[TestMethod]
MyTestCase() => Test
    .Arrange(() => new MyClass())
    .Act(underTest => underTest.InstanceMethod())
    .Assert(result => result.IsSuccess.Should().BeTrue("This basic operation should succeed"));

The same test case with chained assertion:

[TestMethod]
MyTestCase() => Test
    .Arrange(() => new MyClass())
    .Act(underTest => underTest.InstanceMethod())
    .Assert().IsSuccess("This basic operation should succeed");

A test case checking if the operation threw the expected exception (using Fluent Assertions):

[TestMethod]
MyTestCase() => Test
    .Arrange(() => new MyClass())
    .Act(underTest => underTest.InstanceMethod(10))
    .Assert(result => 
    {
        result.IsFailure.Should()
            .BeTrue("The array should be smaller than 10");

        result.Exception.Should()
            .BeAssignableTo<IndexOutOfRangeException>("The array should be smaller than 10");
    });

The same test case with chained assertion:

[TestMethod]
MyTestCase() => Test
    .Arrange(() => new MyClass())
    .Act(underTest => underTest.InstanceMethod(10))
    .Assert().ThrewException<IndexOutOfRangeException>("The array should be smaller than 10");

A test case checking if the operation returned the expected value (using Fluent Assertions):

[TestMethod]
MyTestCase() => Test
    .Arrange(() => new MyClass())
    .Act(underTest => underTest.InstanceMethod(42))
    .Assert(result => 
    {
        result.IsSuccess.Should()
            .BeTrue("This basic operation should succeed");

        result.Value.Should()
            .Be(42, "The output should be equal to the input");
    });

The same test case with chained assertion (using Fluent Assertions):

[TestMethod]
MyTestCase() => Test
    .Arrange(() => new MyClass())
    .Act(underTest => underTest.InstanceMethod(42))
    .Assert()
        .Validate(result => result.Should().Be(42, "The output should be equal to the input"));
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 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)
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NuGet packages

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Version Downloads Last updated
1.2.2 532 11/28/2020
1.2.1 420 11/28/2020
1.2.0 462 8/30/2020
1.1.0 443 6/22/2020
1.0.1 444 5/17/2020
1.0.0 398 5/17/2020