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sonar

v0.0.0

Published

HTTP request simulation tools.

Downloads

56

Readme

sonar

Sonar is a test tool for HTTP server instances in NodeJS. Sonar can be used with most unit test frameworks to test native HTTP server instances, Connect instances, and Express instances -- all without having to call listen.

Basic Usage

npm install sonar

Sonar works by wrapping a handler or application instance and exposing a simple HTTP API for generating sythentic request/response objects. By default, Sonar will capture all resulting response data and place it in the body attribute of the response. HTML responses are parsed using jsdom with "jQueryify" support for DOM navigation. For example, a simple test of the page title might look like:

sonar(app).get("/page", function (error, response) {
    var title = response.body.$('title').text();
    
    expect(title).to.equal("Page Title");
});

Similarly, Sonar will automatically parse JSON responses to objects and will gather all other responses into the body attribute as text.

Added Perks

When run with Cover, Sonar will add the ability to include coverage reports of your front-end code right along side your backend code. There's nothing to do other than invoke your test cases with Cover.

NOTE: currently only external script dependencies are instrumented. Inline scripts will not be covered and will not appear in the coverage report.

Usage Details

sonar(application, [options])

  • application - the application/handler to simulate requests to.
  • options - Optional. Configuration options for the wrapper.

Creates a new sonar instance by wrapping an application or handler. The following options are available:

  • parseBody - Defaults to true. When true, Sonar will buffer and attempt to parse the response contents based on the response content type. If set to false, the request callback is responsible for calling response.on("data", . . .) and response.on("end", . . .) itself.
  • plugins - An array of jQuery plugins to use with the response. See sonar.plugin for more information.

sonar.get(path, [headers], callback)

sonar.post(path, [headers], callback)

sonar.put(path, [headers], callback)

sonar.delete(path, [headers], callback)

  • path - the path to simulate a request to.
  • headers - Optional. A hash of headers to add to the request.
  • callback - called when the request has been processed. The callback is passed two arguments, (error, response).

Simulates a request to the handler. Returns a request object similar to http.IncomingMessage.

sonar.json

Provides a covenience API for sending JSON payloads. This API is exactly the same as the normal Sonar API except that it will automatically set the Content-Type header to application/json and will add a send method to the returned Request object. The send method takes an object to be sent (this will automatically be stringified). For example:

var ping = sonar(app).json.post("/path", function (error, response) {
    . . .
});
ping.send({ hello: "world" });

sonar.plugin(implementation)

  • implementation - a function defining a custom jQuery plugin. The function should expect the global jQuery object as its only argument.

Defines a custom plugin to add to the jQuery API on the response object. This is a useful way to define custom test helpers. Returns a chainable reference to the sonar instance.

For the Slightly More Adventurous

Request and Response objects can be constructed and passed to handler instances directly if desired. For example:

var request  = new Request("/path"),
    response = new Response(request);

response.setEncoding("utf-8");
response.on("data", function (data) { console.log(data); });
app(request, response);

sonar.Request([method], [path], [httpVersion])

  • method - Defaults to "GET". The HTTP request method.
  • path - Defaults to "/". The path to request.
  • httpVersion - Defaults to "1.1". The HTTP protocol version.

sonar.Response(request)

  • request - The request to be responded to.