Hslayers-ng mapping library¶
You need git to clone the hslayers-ng repository. You can get it from
If you dont plan to develop hslayers-ng, dont want to run tests and serve files through npm managed
http server, then you can skip all the following `npm` related steps.
We have a number of node.js tools to initialize and test hslayers-ng. You must have node.js and
its package manager (npm) installed. You can get them from [http://nodejs.org/].
Clone the repository where your webserver can access it using [git]:
git clone git+ssh://firstname.lastname@example.org/hsrs/hslayers-ng
We have two kinds of dependencies in this project: tools and angular framework code. The tools help
us manage and test the application.
We have preconfigured `npm` to automatically run `bower` so we can simply do:
Behind the scenes this will also call `bower install`. You should find that you have two new
folders in your project.
- `node_modules` - contains the npm packages for the tools we need
- `bower_components` - contains the angular framework files
Configure the application¶
Copy the application configuration (template) files to the actual files.
cp app.js.template app.js
cp hslayers.js.template hslayers.js
Hslayers.js file contains the paths for the different modules and is the starting
point of the js application.
Set the hsl_path variable on top of the file to your hslayers-ng directory.
The path should be relative to your www root or the html file where you load hslayers.js file.
App.js file is where you specify which hslayers modules will be loaded for your speciffic
application, which map layers will be displayed and other configuration parameters.
You can also write some startup code here to load some map service or open some initial panels etc.
Include in your html file, where the map should appear. Check the paths to the js files.
<div hs ng-app="hs" ng-controller="Main" style="position: relative;"></div>
Some example html files are provided in the `examples` directory. The template app.js uses
some png files for layer groups which are also included in the `examples/armenia` directory.
For providing proxy functionality we use a simple cgi script, which you have to copy from `lib/hsproxy.cgi`
to your cgi-bin directory. It might be located in /usr/lib/ if you use apache.
cp lib/hsproxy.cgi /usr/lib/cgi-bin/hsproxy.cgi
To enable cgi on ubuntu, use
sudo a2enmod cgi
sudo service apache2 restart
Run the Application¶
We have preconfigured the project with a simple development web server, but you can always use a different web server.
The simplest way to start this server is:
Now browse to the app at `http://localhost:8000/`.
There are two kinds of tests in the hslayers-ng: Unit tests and End to End tests.
Running Unit Tests¶
The hslayers-ng app comes preconfigured with unit tests. These are written in
[Jasmine][jasmine], which we run with the [Karma Test Runner][karma]. We provide a Karma
configuration file to run them.
- the configuration is found at `test/karma.conf.js`
- the unit tests are found in `test/unit/`.
The easiest way to run the unit tests is to use the supplied npm script:
This script will start the Karma test runner to execute the unit tests. Moreover, Karma will sit and
watch the source and test files for changes and then re-run the tests whenever any of them change.
This is the recommended strategy; if your unit tests are being run every time you save a file then
you receive instant feedback on any changes that break the expected code functionality.
You can also ask Karma to do a single run of the tests and then exit. This is useful if you want to
check that a particular version of the code is operating as expected. The project contains a
predefined script to do this:
npm run test-single-run
End to end testing¶
The hslayers-ng app comes with end-to-end tests, again written in [Jasmine][jasmine]. These tests
are run with the [Protractor][protractor] End-to-End test runner. It uses native events and has
special features for Angular applications.
- the configuration is found at `test/protractor-conf.js`
- the end-to-end tests are found in `test/e2e/`
Protractor simulates interaction with our web app and verifies that the application responds
correctly. Therefore, our web server needs to be serving up the application, so that Protractor
can interact with it.
In addition, since Protractor is built upon WebDriver we need to install this. The hslayers-ng
project comes with a predefined script to do this:
npm run update-webdriver
This will download and install the latest version of the stand-alone WebDriver tool.
Once you have ensured that the development web server hosting our application is up and running
and WebDriver is updated, you can run the end-to-end tests using the supplied npm script:
npm run protractor
This script will execute the end-to-end tests against the application being hosted on the
You can update the tool dependencies by running:
This will find the latest versions that match the version ranges specified in the `package.json` file.
You can update the Angular dependencies by running:
This will find the latest versions that match the version ranges specified in the `bower.json` file.