telefonicaid/command-shell-lib

Name: command-shell-lib

Owner: Telefónica I+D

Description: The target of this module is to ease the creation of command line testing applications

Created: 2015-04-28 14:08:32.0

Updated: 2017-04-22 03:35:21.0

Pushed: 2017-09-14 09:08:06.0

Homepage: null

Size: 37

Language: JavaScript

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README

Command Shell Lib

Index
Overview

The target o this application is to ease the creation of command line interpreters for testing utililities. It makes use of the functionalities of Node.js Readline library, adding the following features:

Usage
Library import and usage

In order to use the library, you have to require it, as usual, and initialize it:

clUtils = require('command-node');

]

ils.initialize(commands, 'App Tester> ');

The initialize() function receives two parameters:

  • The commands object: that defines all the commands available in your interpreter (its structure is described in the next section).
  • And the prompt string: that will be used en each line of the interpreter to mark the input line.
Definition of the Commands object

The library usage is based on the definition of a commands object, that is passed in the initialization of the library. This object contains a description of each of the commands you want to be able to execute. E.g.:

commands = {
    'create': {
        parameters: ['objectUri', 'objectValue'],
        description: '\tCreate a new object. The object is specified using the /type/id OMA notation.',
        handler: function() {}
    }
};

This definition includes:

  • name: for each command a new attribute is defined in the object. The attribute name will be the name of the command used to execute it in the interpreter.
  • signature: that is, the parameters the command will receive. In this current version, commands have to have a fixed number of parameters. This parameters will be checked upon command execution, and the command will fail if the number does not match the signature.
  • description of the command: that will be used to autogenerate the help message for each command.
  • handler: the name of the function that will handle the command execution. Whenever a this particular command is executed witht the adecuate number of parameters, the handler will be called, passing an array of parameters with the values used in the command execution.
Other functions
prompt()

Shows the prompt in the standard output. It should be used once the command has stopped sending information to the output. You should also remember to use the prompt after showing information asynchronously (like an asynchronous response from a server) to avoid the user entering information in a blank line.

destroy()

Closes the resources of the interpreter.

notImplemented()

Generic handler showing a “Not Implemented” message, available for developing new commands.

setWriter()

Changes the writer object of the interpreter (where the interpreter writes its information). Mostly for testing purposes. An example of use is available in the test files.

Development documentation
Project build

The project is managed using Grunt Task Runner.

For a list of available task, type

t --help

The following sections show the available options in detail.

Testing

Mocha Test Runner + Chai Assertion Library + Sinon Spies, stubs.

The test environment is preconfigured to run BDD testing style with chai.expect and chai.should() available globally while executing tests, as well as the Sinon-Chai plugin.

Module mocking during testing can be done with proxyquire

To run tests, type

t test

Tests reports can be used together with Jenkins to monitor project quality metrics by means of TAP or XUnit plugins. To generate TAP report in report/test/unit_tests.tap, type

t test-report
Coding guidelines

jshint, gjslint

Uses provided .jshintrc and .gjslintrc flag files. The latter requires Python and its use can be disabled while creating the project skeleton with grunt-init. To check source code style, type

t lint

Checkstyle reports can be used together with Jenkins to monitor project quality metrics by means of Checkstyle and Violations plugins. To generate Checkstyle and JSLint reports under report/lint/, type

t lint-report
Continuous testing

Support for continuous testing by modifying a src file or a test. For continuous testing, type

t watch
Source Code documentation

dox-foundation

Generates HTML documentation under site/doc/. It can be used together with jenkins by means of DocLinks plugin. For compiling source code documentation, type

t doc
Code Coverage

Istanbul

Analizes the code coverage of your tests.

To generate an HTML coverage report under site/coverage/ and to print out a summary, type

e git-bash on Windows
t coverage

To generate a Cobertura report in report/coverage/cobertura-coverage.xml that can be used together with Jenkins to monitor project quality metrics by means of Cobertura plugin, type

e git-bash on Windows
t coverage-report
Code complexity

Plato

Analizes code complexity using Plato and stores the report under site/report/. It can be used together with jenkins by means of DocLinks plugin. For complexity report, type

t complexity
PLC

Update the contributors for the project

t contributors
Development environment

Initialize your environment with git hooks.

t init-dev-env 

We strongly suggest you to make an automatic execution of this task for every developer simply by adding the following lines to your package.json


cripts": {
 "postinstall": "grunt init-dev-env"


Site generation

There is a grunt task to generate the GitHub pages of the project, publishing also coverage, complexity and JSDocs pages. In order to initialize the GitHub pages, use:

t init-pages

This will also create a site folder under the root of your repository. This site folder is detached from your repository's history, and associated to the gh-pages branch, created for publishing. This initialization action should be done only once in the project history. Once the site has been initialized, publish with the following command:

t site

This command will only work after the developer has executed init-dev-env (that's the goal that will create the detached site).

This command will also launch the coverage, doc and complexity task (see in the above sections).


This work is supported by the National Institutes of Health's National Center for Advancing Translational Sciences, Grant Number U24TR002306. This work is solely the responsibility of the creators and does not necessarily represent the official views of the National Institutes of Health.