TDD exercise with .NET Core RC2 including everything you would expect to see:
- Moq for mocking dependencies
- FluentAssertions for BDD-style testing
x.Should().Be(100)etc - Dockerfile for building and running the application without having to set up a runtime
- Read in a markets.csv file containing various individuals with money to lend at various rates
- Take in parameters from the command line for a given amount and a set fixed term of 36 months / 3 years.
- Produce an output of the monthly repayments using compound interest and also the final amount payable.
Example rates file:
Lender,Rate,Available
Bob,0.005833333,500
John,0.005833333,500
Produces following output when borrowing 1000 USD:
$ dotnet run
Payment: 30.87
Total: 1111.57
This is task is work-in-progress.
[X] Calculate weighted average for more than one lender
[X] Pick funds from cheapest lenders first
[X] Check for multiples of 100 USD
[X] Don't allow for less than 100 USD to borrow
[ ] Validate upper borrowing limit
[ ] Remove debug messages
[ ] Find coverage tool that works with DNCore
Out of scope:
This task was originally estimated at 2-3 hours by source, so these things are probably out of scope:
[ ] Use Unity or some other dependency injection tool
If you do not use Docker, then please install the below:
Follow instructions for installing dotnet runtime from: microsoft.com/net/core
Without Docker:
- Running the unit tests
$ git clone https://github.com/alexellis/dncore-market-rates
$ cd dncore-market-rates/test/RateCalc.Engine.Tests/
$ dotnet restore
$ dotnet test
- Running the app
$ cd dncore-market-rates/src/RateCalc.App
$ dotnet restore
$ dotnet run
During the building of the image the unit tests will be run - so if they fail the whole build will stop. Once complete the code can be run through docker run rates and it will read in the market.csv file in the repository root.
$ docker build -ti rates .
$ docker run rates