Project Requirements

• The electronic color code (http://en.wikipedia.org/wiki/Electronic_color_code) is used to indicate the values or ratings of electronic components, very commonly for resistors. Write a class that implements an IOhmValueCalculator interface.

public interface IOhmValueCalculator
{
   /// <summary>
   /// Calculates the Ohm value of a resistor based on the band colors.
   /// </summary>
   /// <param name="bandAColor">The color of the first figure of component value band.</param>
   /// <param name="bandBColor">The color of the second significant figure band.</param>
   /// <param name="bandCColor">The color of the decimal multiplier band.</param>
   /// <param name="bandDColor">The color of the tolerance value band.</param>
   int CalculateOhmValue(string bandAColor, string bandBColor, string bandCColor, string bandDColor);
}

• Write the unit tests you feel are necessary to adequately test the code.

• http://ohmvaluecalculator.azurewebsites.net/api/calculator/bandAColor/red/bandBColor/violet/bandCColor/green/bandDColor/brown

0.0.1

• Visual Studio 2017 - Fully-featured integrated development environment (IDE) for Android, iOS, Windows, web, and cloud.
• .NET Core - A developer platform for building all your apps.
• NUnit - NUnit is a unit-testing framework for all .Net languages.
• Fluent Assertions - A very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit tests.

• git clone https://github.com/shahmirn/OhmValueCalculatorDotNetCore.git

• Either install Visual Studio 2017 with the "ASP.NET and Web Development" workload, or install .NET Core 2.2 SDK

• If using Visual Studio

  • open OhmValueCalculator.sln
  • Go to Debug, then Start Debugging

• If using the command line / .NET Core 2.2 SDK

  • cd OhmValueCalculatorDotNetCore
  • dotnet restore
  • dotnet run --project OhmValueCalculator

• Go to http://localhost:56111/api/calculator/bandAColor/red/bandBColor/violet/bandCColor/green/bandDColor/brown

• To see results for other colors, replace the band colors in the URL with other valid colors. Refer to http://en.wikipedia.org/wiki/Electronic_color_code to see other valid color combinations.

• If using Visual Studio
  • Go to Build, then Build Solution
  • Go to Test, Windows, then Test Explorer
  • Click on Run All
• If using command line / .NET Core 2.2 SDK
  • cd OhmValueCalculatorDotNetCore
  • dotnet restore
  • dotnet test OhmValueCalculator.Tests -v n

• Located at https://shahmirn.visualstudio.com/OhmValueCalculatorDotNetCore/_build

The original problem specified an interface that returns an int.

However, given that band D is the tolerance band, the user would be interested in the resistance of the resistor based on the first three bands, plus the deviation / variance based on the fourth band.

This necessitates returning an object instead, which contains a Resistance, Minimum, and Maximum value.

• https://github.com/shahmirn/ohm-value-calculator-react

• Add additional code comments
• Create an enum for the colors for the different bands instead of allowing any arbitrary string
• Use Swashbuckle.AspNetCore to add swagger documentation