IoSpec

IoSpec is a BDD test library for the Io language. It is very much inspired by the amazing RSpec Ruby library.

Example

describe(Bowling) do (
  it ("scores 0 for all gutter game") do (
    game := Bowling clone
    20 repeat ( game hit(0) )
    game score should == 0
  )
)

See the examples directory for more examples, among which the full bowling game.

Running your specs

By default IoSpec loads all files whose name matches *_spec.io in the working directory. Of course you can tell IoSpec to load other files, or maybe a subset of them.

To run all your specs you run IoSpec without any arguments.

$ iospec

To run specs from a different (or specific) directory you can provide the path to that directory. For example, if your spec files are only in the test directory, run:

$ iospec test

To run files with a different pattern you have to provide that pattern. For example, to run all example files in the examples directory, run:

$ iospec examples/*_example.io

You can provide multiple arguments. For example, to run calculator_spec.io and greeting_spec.io from your spec directory, run:

$ iospec spec/calculator_spec.io spec/greeting_spec.io

Output Formatting

By default IoSpec outputs test results in progress format. Using a different formatter can be specified on the command-line using the --formatter option.

For example, to output your tests as documentation, run:

$ iospec --formatter documentation

The supported formatters are: progress, documentation.

Of course it's possible to add a custom formatter. All formatters should be available in the iospec matchers formatters module. You can start your formatter by cloning BaseFormatter.