rsolomo/node-stream-expect

Interact with streams using expect

node-stream-expect

stream-expect is a tool for controlling interactive streams.

Installation

$ npm install stream-expect

Usage

Checkout the examples for some sample usage.

expect.createExpect(ReadStream, WriteStream, [options])

Returns a new Expect object.

• ReadStream - Object - A readable stream
• WriteStream - Object - A writeable stream
• options - Object
  • timeout - Number - Sets how long to wait before timing out, defaults to 10000

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expect.createExpect(DuplexStream, [options])

Similar to above, but stream is both readable and writeable.

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expect.spawn(command, [args], [options])

Convenience method for spawning a process, creating an Expect object, and using stdin and stdout for the read and write streams.

In other words this:

var child = require('child_process').spawn(command)
var exp = expect.createExpect(child.stdin, child.stdout)

Could optionally be replaced with this:

var exp = expect.spawn(command)

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.expect(regex, callback)

Watch stream for data matching regex. Here are the callback's arguments:

• err - Error|null - An error object will be returned if expect times out
• output - String - The output of the stream since method was called
• match - Array - The results of the successful regex

It's worth noting that regex matches will be non-greedy.

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.send(string)

Write to the writeable stream

License

MIT