Fluent-VBA

Fluent VBA is an object-oriented fluent unit testing library for VBA. This project was inspired by Fluent Assertions in C#.

Fluent APIs are intended to be read like natural language. So instead of having something like:

Option Explicit

Sub NormalUnitTestExample
    Dim result as long
    Dim Assert as cUnitTester
    
    '//Arrange
    Set Assert = New cUnitTester
    
    '//Act
    result = returnVal(5) 'returns the value provided as an argument
    
    '//Assert
    Assert.Equal(Result,5)
End Sub

Public Function returnVal(value As Variant) As Variant
    returnVal = value
End Function

You can have code that reads more naturally like so:

Option Explicit

Sub FluentUnitTestExample1
    Dim Result As IFluent
    Dim returnedResult As Variant
    
    '//Arrange
    Set Result = New cFluent
    returnedResult = returnVal(5)
    
    '//Act
    Result.TestValue = returnedResult
    
    '//Assert
    Debug.Assert Result.Should.Be.EqualTo(5)
    Debug.Assert Result.Should.Be.GreaterThan(4)
End Sub

Or, arguably, even more naturally using cFluentOf objects like this:

Option Explicit

Sub FluentUnitTestExample2()
    Dim Result As IFluentOf
    Dim returnedResult As Variant
    
    '//arrange
    Set Result = New cFluentOf
    returnedResult = returnVal(5)
    
    '//Act
    With Result.Of(returnedResult)
        '//Assert
        Debug.Assert .Should.Be.EqualTo(5)
        Debug.Assert .Should.Be.GreaterThan(4)
    End With
    
    '//Or like this
    
    '//Act & Assert
    Debug.Assert Result.Of(returnedResult).Should.Be.EqualTo(5)
    Debug.Assert Result.Of(returnedResult).Should.Be.GreaterThan(4)
End Sub

Getting started

To get started with Fluent VBA you can see the getting started page on the wiki.

Contacting me

You can contact me at [email protected].

Contributing to Fluent VBA

I'm open to external contributions for Fluent VBA. I do need to work on a style guide to determine how I'd like such contributions to be implemented. I also expect any contributions to have unit tests using the Fluent VBA library.

Feature requests

You are free to contact me regarding feature requests as long as you understand that I'm not obligated to implement them. I expect messages to be polite, respectful, and without a sense of entitlement. As long as you do those things, I'm happy to hear what you have to say.

Final notes

The API is in a good and usable state. Overall I'm pretty happy with the API's internal and external design. As of right now, I only anticipate internal changes and feature enhancements. So the design of the API should be relatively stable. I'd be open to changing certain design aspects of the API if I found a good reason to do so however. Naturally, this is dependant on time and availability on my part however.