rickalx / dev-program-assessment

Assessment

This is the test assessment project for the DEV program.

The purpouse of the pagination project is to provide functionality for data navigation.

Project structure

Assesment project

This library provides the next functionalities for data navigation:

• First Page, Moves cursor to the first page
• Previous Page,Moves cursor to the previous page. It should return an InvalidOperationException when there is no previous page.
• Next Page, Moves cursor to the next page. It should return an InvalidOperationException when there is no next page.
• Last Page, Moves cursor to the last page
• Go To Page, moves cursor directly to the specified page. It should return an InvalidOperationException when the page is not valid. Invalid values are: negative numbers, a value that exceeds the number of pages
• Current Page, returns the current page
• Pages, returns the number of pages
• Visible items, returns the elements that are visible in the current page

You can run the unit tests with the next command:

dotnet test .\AssessmentTest\AssessmentTest.csproj

Assessment console

Console program that uses the library to provide data navigation to users throught the console UI.

You can run the program with the next command:

dotnet run -p .\AssessmentConsole\AssessmentConsole.csproj

Goals

You must try to accomplish as many goals as possible because this will define if you are a candidate for the next advanced levels of the program.

1. Pagination

   • a. Complete navigation functionalities

   • b. All pagination unit test must pass

   • c. Itendify missing scenarios to test in the Pagination code

   • d. Provide an implementation that can navigate a list of numbers

     • Implement the unit tests for GoToPage, NextPage and GetVisibleItems

   • c. Add two new functions for sorting:

     • SortAsc, sorts the data in an ascending way. The default sorting
     • SortDesc, sorts the data in a descending way
     • Implement the unit tests

   • d. Modify the next methods to make them chainable

     • First page
     • Next page
     • Previous page
     • Last page
     • Go to page

     It should be possible to do the next calls: pagination.GoToPage().NextPage();

2. Providers
   • a. Add support to data sources that are using as separator a pipe (|)
   • b. Add support to data sources that are using as separator a white space ( )
   • c. All the provided unit tests must pass
   • d. If you think there is a better way to define Providers, feel free to refactor the code.
3. Console program
   • a. Complete all the navigation functionalities in the Console program
   • b. The console program cannot crash for invalid inputs
   • c. Find a better way (refactor) the spaghetti code in the App.cs code, lot of if/else sentences doesn't look good.

Note

Remember that the code might have issues, it is your responsibility to identify and fix them.

Goals to pass Level 1

1.a, 1.b, 2.a, 2.b, 2.c, 3.a, 3.b

Goals to pass Level 2

1.c, 1.d, 1.c, 1.d, 2.d, 3.c

Submit your task

You have 3 hours for this assignment, the way to submit your work is:

• If you have a github account, you can clone this project and refactor the application in your clone. You must push your changes before the time limit. After that send an email to [e-mail] with the url of your repository.
• If you are not familiar with git repositories, you can download the project from the next url: https://github.com/ziur/dev-program-assessment/archive/master.zip To submit your changes, you can zip your project folder and send it to [e-mail] before the time limit.
  Your email should have the next subject: DEV-<FirstName><Lastname>

NOTE: Please make sure only include project files.