openmct/README.md

# Open MCT Web

Open MCT Web is a web-based platform for mission operations user interface
software.

## Bundles

A bundle is a group of software components (including source code, declared
as AMD modules, as well as resources such as images and HTML templates)
that are intended to be added or removed as a single unit. A plug-in for
Open MCT Web will be expressed as a bundle; platform components are also
expressed as bundles.

A bundle is also just a directory which contains a file `bundle.json`,
which declares its contents.

The file `bundles.json` (note the plural), at the top level of the
repository, is a JSON file containing an array of all bundles (expressed as
directory names) to include in a running instance of Open MCT Web. Adding or
removing paths from this list will add or remove bundles from the running
application.

### Bundle Contents

A bundle directory will contain:

* `bundle.json`, the declaration of the bundles contents.
* A source code directory, named `src` by convention. This contains all
  JavaScript sources exposed by the bundle. These are declared as
  AMD modules.
* A directory for other resources, named `res` by convention. This
  contains all HTML templates, CSS files, images, and so forth to be
  used within a given bundle.
* A library directory, named `lib` by convention. This contains all
  external libraries used and/or exposed by the bundle.
* A test directory, named `test` by convention. This contains all unit
  tests declared for the bundle, as well as a `suite.json` that acts
  as a listing of these dependencies. See the section on unit testing
  below.

Following these bundle conventions is required, at present, to ensure
that Open MCT Web (and its build and tests) execute correctly.

## Tests

The repository for Open MCT Web includes a test suite that can be run
directly from the web browser, `test.html`. This page will:

* Load `bundles.json` to determine which bundles are in the application.
* Load `test/suite.json` to determine which source files are to be tested.
  This should contain an array of strings, where each is the name of an
  AMD module in the bundle's source directory. For each source file:
  * Code coverage instrumentation will be added, via Blanket.
  * The associated test file will be loaded, via RequireJS. These will
    be located in the bundle's test folder; the test runner will presume
    these follow a naming convention where each module to be tested has a
    corresponding test module with the suffix `Spec` in that folder.
* Jasmine will then be invoked to run all tests defined in the loaded
  test modules. Code coverage reporting will be displayed at the bottom
  of the test page.

At present, the test runner presumes that bundle conventions are followed
as above; that is, sources are contained in `src`, and tests are contained
in `test`. Additionally, individual test files must use the `Spec` suffix
as described above.

An example of this is expressed in `platform/framework`, which follows
bundle conventions.

## Build

Open MCT Web includes a Maven command line build. Although Open MCT Web
can be run as-is using the repository contents (that is, by viewing
`index.html` in a web browser), and its tests can be run in-place
similarly (that is, by viewing `test.html` in a browser), the command
line build allows machine-driven verification and packaging.

This build will:

* Check all sources (excluding those in directories named `lib`) with
  JSLint for code style compliance. The build will fail if any sources
  do not satisfy JSLint.
* Run unit tests. This is done by running `test.html` in a PhantomJS
  browser-like environment. The build will fail if any tests fail.
* Package the application as a `war` (web archive) file. This is
  convenient for deployment on Tomcat or similar. This archive will
  include sources, resources, and libraries for bundles, as well
  as the top-level files used to initiate running of the application
  (`index.html` and `bundles.json`).

Run as `mvn clean install`.