Basic JMN Mood: code exercice.

Please provide in a text file a section of self crafted code (in a language of your choice) with associated unit tests that demonstrates a test driven approach to meeting the following acceptance criteria:

Given I have a command line window open
And I type in a {input filename} "c:{folder}\texttoreverse.txt" of saved text file that contains the {input text} "abcdef12345"
And I type in a {output filename} "c:{folder}\textreversed.txt" of a text file that will be created
When press return
Then the command line reads the input file: {input file} has been reversed and output to the file: {output filename} with the reversed content: {output text} "54321fedcba"
And the file {output filename} "c:{folder}\textreversed.txt" is created
And the contents of the file contains {output text} "54321fedcba"

Please note the following constraints:

• Demonstrate a TDD approach.
• Unit tests should not hit the file system.
• Return your code in simple text file as it will be rejected by Mood Media firewall.
• Do not send binaries as we are not going to run any application and will simply look at the code in a text editor.

Prerequisites

Node.js : install version 0.9.6 or up. See node.js for install on your system.
GNUMake :

• For Debian:

    sudo apt-get install make
  

• For Redhat,CentOS:

    sudo rpm -ivh make
  

• For Windows : see binary installation Make for Windows

Installation

• Start a command line window

• Goes in the root of the application git clone

• with dev modules dependencies(test frameworks installation), Execute command:

    npm install
  

• for production only application Execute command:

    npm install --production
  

Execute test

Remark: should be perform as specified above with the dev modules dependencies install.

• Start a command line window

• Goes in the root of the application git clone

• Execute command:

    Make
  

Example test result :

Test result :

../lib/ReversFile.js - Reverse file
	✓ getInstance() - instance should create
	processArguments() - when i process arguments
		✓ it should return false for unspecified source file
		✓ it should test source file exists.
		✓ it should return false for unspecified destination file
		✓ sourceFileName getter should return same as processed argument after valid check
		✓ destFileName getter should return same as processed argument after valid check
	readSourceFile() - when i read source file
		✓ it should call the filesystem readFileSync once
		✓ read file failed goes throw error
		✓ getData() - it should set the data content to the read file content
	reverseSourceData() - when i reverse the data
		✓ it should return data with reversed source content
	writeReverseContent() - when i save the data
		✓ it should call the writeFileSync to write the data to the filesystem
		✓ write file failed goes throw error
12 tests complete (333 ms)

Code Coverage result:

=============================== Coverage summary ===============================
Statements   : 100% ( 28/28 )
Branches     : 100% ( 10/10 )
Functions    : 100% ( 10/10 )
Lines        : 100% ( 28/28 )
================================================================================

Execute application

• Start a command line window

• Goes in the root of the application git clone

• Execute command:

    node app/app.js {input filename} {output filename}