README.md

jcs-es

Event-Sourced Job Costing Demo

Setup

1. Install the latest .Net5.0 SDK here.
2. If you don't have Visual Studio 2019 installed, open your favorite shell and navigate to the repository root, otherwise just open the jcs-es.sln file.
3. Build the solution, using dotnet build command if you're in a shell; the solution should build just fine, although a dotnet restore may also be necessary.
4. Install the latest MongoDb Community Server edition here.
5. Add the mongod and mongo executables to your PATH
6. Create or choose some directory to contain the database files
7. In a new shell, submit a mongod --dbpath <data_directory> command to start the mongodb server, where <data_directory> is the relative or absolute path to your chose directory for the mongodb database files
8. In a new shell, submit a mongo command; you should see some output followed by the caret prompt >. Submitting a show dbs command should reveal that your shell is now connected to the mongodb server

Testing

1. Run all the tests, using dotnet test if you're in the shell; all tests should pass except for one, which shows something like

   Expected: 0
   Actual:   125

   The Actual value is the number of milliseconds it took to rehydrate an aggregate from 10001 events.

2. If you like you can issue the following commands through mongodb

   use jcs
   db.events.find().pretty()
   db.events.count()
   db.events.drop()