Getting started with unit testing

Example code for my aligneddev.net article and SD Code Camp 2018.

In June 2020, I updated this to .Net Core 5 preview 5.

How do you start writing unit tests?

I hope to show an example at my presentation and people will walk out thinking "I can do that".

Master branch is the up-to-date version.

Tech Used

• Asp.Net MVC Core 5 preview 4(https://devblogs.microsoft.com/dotnet/announcing-net-5-preview-4-and-our-journey-to-one-net/)
• EF Core - may just be mocked data for now
• Open API

Branches

• master - has the latest running code
• original - original written in .Net Core 2.2
• emptyStart - after running the commands above with a few tweaks
• apiHttpCall - creating the API tests, merged to master
• inMemoryDatabase - EF using inMemoryDatabase for tests

"Business" Goals

Provide a way to track biking miles for purposes of reporting.

1. Reports on miles for the current year, past years, savings and expenses.
2. calculate savings based on car mileage and gas prices.

I currently have a Google Spreadsheet that I use to track all of this and see this as an opportunity to write some fun code.

For the purposes of this talk sample code, we'll keep it simple and not all the functionality will be implemented at this time.

Models

RideInfo

The ride information to save and returns. Mirrors the DB structure with EF Core.

Scenarios/Specs that my "business" needs

API

used in my presentation

-- get current temp to fill in ride info Given an API call When asking for current temp Then it calls the weather Api with the correct zip code

Given a new ride is submitted When missing values (invalid) Then it should return a 503 with a invalid message

Examples

Given a new ride is submitted When all values filled in (valid) Then it should persist to the data store with those values

Examples

Web

I have Cypress tests, and even Cypress running against Blazor, in this repo

TypeScript tests

Given the new ride screen When missing values (invalid) And Save is clicked Then it should show the validation message(s)

Examples

Given the new ride screen When all values filled in (valid) And Save is clicked Then it should post to the persist the ride

Examples

Given the new ride screen When all values filled in (valid) And Save is clicked And Post fails Then it should show the correct error message

Given the new ride screen When all values filled in (valid) And Save is clicked And Post succeeds Then it should clear the values in the form And Update totals (2nd test)

Examples

MVC Tests

?? any needed with SPA approach?? my article on "classic" MVC testing