basdrum

A wrapper for Bas to simplify web testing

BasDrum

BasDrum is a simple wrapper around [Bas](short for Behaviour Assertion Sheets), created by Christopher Giffard.

In short: You create Bas sheet files. Each ruleset in a sheet must specify an URL (pieced together from the ruleset's conditions). You run that sheet through BasDrum. BasDrum parses the URL from each ruleset, fetches that URL and runs lets Bas do its thing. When a bas test fails, BasDrum starts screaming and stops. This isn't pretty, but works great for integration into, say, nagios. (Incidentally that is exactly what I am doing with it.)

This current version is just barely functional and contains some unpretty behavior.

git clone https://github.com/lasar/BasDrum.git
cd BasDrum
npm install

Create one or several sheets as described in the next section.

Then execute the script like this:

./bin/cli.js path/to/sheet.bas

You can pass multiple parameters. You can also pass in a directory name. BasDrum will then use all files ending in .bas in that directory.

Add --verbose (or -v) to get more output.

The script will return the error code 1 if anything goes wrong or when one of the tests in a sheet fail. In case of an error in a sheet the script stops immediately. No further tests are executed.

Sheets are normal Bas sheets, but with one constraint: Each ruleset must be of type @page and have conditions from which ann URL can be extrapolated.

The following conditions are handled:

  • protocol: Defaults to "http"
  • domain: No default
  • path: Defaults to "/"
  • url: The simplest way to define an entire URL.

Some valid examples:

@page (url = "http://www.example.com/some/path/") { … }
@page (protocol = "http") (domain = "example.com") (path = "some/path/") { … }
@page (domain = "example.com") { … }
  • Get this thing into npm.
  • Use Bas's annotation syntax to specify an URL instead of rule conditions
  • When a sheet contains multiple rulesets with the same URL, that URL is fetched mutliple times. This could be optimized.
  • BasDrum currently runs the contents of an entire sheet against every URL found within. This is not a problem, but also not pretty.