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integration-harness

v0.1.3

Published

A LeadConduit integration run/test utility

Downloads

6

Readme

Build Status

integration-harness

A LeadConduit integration run/test utility

This integration harness can be used in several ways:

  1. Run the command-line version that performs a stock suite of basic module format tests out of the box
  2. Run a simple web UI to interact with an integration's functions (validate(), request(), and response()) and launch the integration UI
  3. Extend the basic tests by writing harness fixtures specific to an integration. These are plain data files, written in YAML, which are available to both the command-line and the web UI.

Installation

Run npm -g install integration-harness.

Now, for it to be of any use, you'll need a LeadConduit integration module. Depending on your use case, you can either clone a repo from Github, or install the module from NPM. In the former case, you'll need to be sure to run npm install after you clone or update the repo.

Github example

  1. git clone [email protected]:activeprospect/leadconduit-integration-trustedform.git
  2. cd leadconduit-integration-trustedform/
  3. npm install
  4. harness (or, harness --server, see below)

NPM example

  1. npm install leadconduit-trustedform
  2. cd node_modules/leadconduit-trustedform/
  3. harness (or, harness --server, see below)

Command-line

Once installed, you can execute a baseline set of sanity-check tests by running harness in the directory where your integration is checked out. This suite of basic tests should all be green & passing out of the box. It also can be customized with integration-specific checks via YAML fixtures, described below.

baseline test suite

When no fixture definitions are found (see below), the harness will apply a suite of baseline tests with the bare minimum mock data structures.

When these tests fail, it may be due to a problem or a violation of standards. Or, it may mean that the skeletal data structure used for testing isn't close enough to what the integration expects.

For example, the data used to test a basic response() function (in a request/response-style integration) is:

{
  "headers": {
    "Content-Type": "application/json"
  },
  "status": 200,
  "body": "{}"
}

If the integration being tested assumes it will always get a JSON array with a 200 response, for example, this will result in a failed test or two. To address this, you can either code the response() function more defensively, or add integration-specific fixtures with more correct data (or both).

Web UI

Tests can also be run interactively, via a web UI. From the directory where the integration is checked out, run harness --server to start up the server, then visit http://localhost:3033 (or the port number specified with --port). You'll be presented with links to access the various aspects of the integration module: run methods like validate(), request(), and response(), or launch the module's UI, if applicable.

If the integration's rich UI isn't styled as it would be in the app, a quick-and-dirty hack is to add this line to the <head> tag of the integration's /lib/ui/public/index.html. Just remember to remove it before committing or publishing!

  <link href="/lc-client.css" rel="stylesheet">

Fixtures

Test fixtures can be written for your integration, which are used by both the command-line runner and the web UI. This utility looks for and executes all of the YAML file fixture definitions it finds in the harness subdirectory of the given integration.

Format of a YAML fixture file

The first level keys match the core functions of a standard "request/response" integration: validate(), request(), and response(). They are arrays, each element representing one test case, separated by a line with just a dash (-). Within each, test inputs and expected outputs are defined, which the harness will use to test each function.

A should value for each case is optional but highly recommended. They're helpful for self-documenting, describing the cases in the UI view, and providing feedback in the command-line output.

As in the integration code itself, the inputs for validate() and request() are called vars, while for response() the input - representing a server response, not the vars snowball - is instead called res. For all three, the expected return data is called expected. (If the expectation is that nothing should be returned, as with a call to validate() that passes all validation checks, then expected should not be defined.)

If extra data is needed for request() that isn't available on vars, such as API keys or timestamps, those can be set as extra_vars.

Example YAML fixture

validate:
-
  vars:
    list_names: cranberries
    value: [email protected]
  envVariables:
    - AN_EXTERNAL_API_KEY
-
  vars:
    list_names: cranberries
  envVariables:
    - AN_EXTERNAL_API_KEY
  expected: values must not be blank

request:
-
  vars:
    list_names: my_list
    value: [email protected]
  expected:
    headers:
      Accept: application/json
      Authorization: Basic WDpmb28=
    method: GET
    url: https://app.suppressionlist.com/exists/my_list/foo%40bar.com

response:
-
  # found [comments, if needed]
  should: parse JSON body
  res:
    headers:
      Content-Type: application/json
    status: 200
    body: >
      {
        "specified_lists": ["list_1", "list_2", "list_3"],
        "key": "[email protected]",
        "found": true,
        "exists_in_lists": ["list_2", "list_3"],
        "entries": [
          {
            "list_id" : "558dbd69021823dc0b000001",
            "list_url_name" : "list_2",
            "added_at" : "2015-08-27T16:18:16Z"
          },
          {
            "list_id" : "558dbd69021823dc0b000002",
            "list_url_name" : "list_3",
            "added_at" : "2015-08-28T16:18:16Z"
          }
        ]
      }
  expected:
    query_item:
      specified_lists:
        - list_1
        - list_2
        - list_3
      key: [email protected]
      found: true
      outcome: success
      reason: null
      found_in:
        - list_2
        - list_3
      added_at: '2015-08-28T16:18:16Z'

extra_vars:
  activeprospect:
    api_key: foo

YAML Syntax Tips

Multiline body strings

Useful for including data (e.g., JSON) in a nice, readable way.

body: >
  {
    email: '[email protected]',
    state: 'TX'
  }

An alternate string syntax that "chomps" newlines

Use this YAML syntax, for example, if a test's comparision is failing because of a trailing \n.

body: |-
  {"email":"[email protected]","state":"TX"}

General Tips

  • The harness loads code from lib, so if you're working with an old CoffeeScript integration, don't forget to re-run cake build whenever you change the code, and before running harness.
  • If you're working on a UI, enable automatic webpack re-compilation by deleting lib/ui/public/dist/index.js (either manually or via npm run-script postpublish).