Assistant Conversation Testing Library

This library provides an easy way to write automated tests for your Action. The library wraps the Actions API, enabling you to define a test suite, send queries to your Action, and make assertions on the output to verify information specific to your Action's conversational state.

Install

Node

The latest version of this library requires Node v10.13.0 or later. You can install the library with

npm install @assistant/conversation-testing --save

Setup

Enable the Actions API for your project (The Actions API is enabled by default for newly created projects):
1. Visit the Google API console and select your project from the Select a project dropdown.
2. If the Action API is not enabled, search for "Actions API" and click Enable.
Create a Service Account key:
1. Visit the Google Cloud console credentials page and select your project from the Select a project dropdown.
2. In the "Create credentials" click "Service account".
3. Enter a service account name and click Create.
4. From the Select a role dropdown, select Actions > Actions Admin.
5. Click Continue.
6. Click ADD KEY, then select Create new key, then press CREATE to download the service account JSON file.
7. Set the service account key file to the GOOGLE_APPLICATION_CREDENTIALS environment variable: export GOOGLE_APPLICATION_CREDENTIALS=/path/to/service_account.json

Usage

Note: The examples below use Mocha as a testing framework. You can change the report style by overriding the Mocha report style. See more information in Mocha's reporter docs

Create file for your tests and define a test suite.

import 'mocha';

import {ActionsOnGoogleTestManager} from '@assistant/conversation-testing';

const PROJECT_ID = '<ACTION_PROJECT_ID>';
const TRIGGER_PHRASE = 'Talk to <ACTION_DISPLAY_NAME>';

describe('Test Suite', function() {
  // Set the timeout for each test run to 60s.
  this.timeout(60000);
  let testManager;

  before('Before all setup', async function() {
    testManager = new ActionsOnGoogleTestManager({ projectId: PROJECT_ID });
    await testManager.writePreviewFromDraft();
    testManager.setSuiteLocale(DEFAULT_LOCALE);
    testManager.setSuiteSurface(DEFAULT_SURFACE);
  });

  afterEach(function() {
    testManager.cleanUpAfterTest();
  });
});

Update the test suite to include various tests with queries and assertions related to your Action. Examples of updates include:

Test your main invocation - The following test is run to verify your invocation points to the intended actions.intent.MAIN intent, the correct scene is initialized, and the prompt for the scene is sent.

...
  it('trigger only test', async function() {
    await testManager.sendQuery(TRIGGER_PHRASE);
    testManager.assertIntent('actions.intent.MAIN');
    testManager.assertScene('Welcome');
    testManager.assertSpeech('Welcome to Facts about Google!');
  });
...

Test your conversation - The example below shows how you might test multiple conversational turns. This test sets the locale to use for the conversation, checks the main invocation, and responds to the Action, while checking matched intents, session parameters and expected responses.

...
  it('main functionality', async function() {
    testManager.setTestLocale('en-GB');
    await testManager.sendQuery(TRIGGER_PHRASE);
    testManager.assertIntent('actions.intent.MAIN');
    testManager.assertScene('Welcome');
    testManager.assertSpeech('Welcome to Facts about Google!');
    testManager.assertText(
      'Welcome to .* about Google!', {isRegexp: true, isExact: true});
    await testManager.sendQuery('Cats');
    testManager.assertSpeech(['Oh great, cats!', 'Good choice cats!']);
    testManager.assertIntent('cats');
    testManager.assertSessionParam('categoryType', 'Cats');
    await testManager.sendQuery('stop');
    testManager.assertConversationEnded();
  });
...

Test intent matching - This test asserts the expected intent is in the top number of matched intents to a given query, in the given language. In the example below, the test returns successful if the yes intent is in the top three intent matches, when the query "yes, I do" is sent.

...
  it('intent match testing', async function() {
    await testManager.assertTopMatchedIntent('yes, I do', 'yes', 3, 'en');
  });
...

Running tests

Ensure you have set your service account key file to the GOOGLE_APPLICATION_CREDENTIALS environment variable: export GOOGLE_APPLICATION_CREDENTIALS=/path/to/service_account.json
Run: npm install && npm run build && npm test

Note: You can use "npm test -- --bail" if you want to stop after the first failure.

Supported features

This library provides functions to control your conversation, easily assert aspects of the response, setting Suite and Test level defaults, and more.

Send functions

sendQuery(queryText) - Sends a query to your action.
sendStop() - Sends a 'stop' query, to exit the action.

Assertions

assertSpeech(expected, assertParams?, response?) - Asserts the expected text is contained in the response Speech (concatenation of the first_simple and last_simple Speech). Note: Through optional assertParams it is possible to require exact match, and/or allow regexp matching.
assertText(expected, assertParams?, response?) - Asserts the response Text (concatenation of the first_simple and last_simple Text)
assertScene(expected, response?) - Asserts the response Scene, i.e. the scene that is currently active in the conversation
assertIntent(expected, response?) - Asserts the response Intent, i.e. the intent that was matched by the query phrase
assertConversationEnded(response?) - Asserts that the conversation ended in the response.
assertConversationNotEnded(response?) - Asserts that the conversation did not end in the response.
assertSessionParam(name, expected, response?) - Asserts the response session storage parameter value.
assertUserParam(name, expected, response?) - Asserts the response user storage parameter value.
assertHomeParam(name, expected, response?) - Asserts the response home storage parameter value.
assertCanvasURL(expected, response?) - Asserts the Canvas URL.
assertCanvasData(expected, requireExact?, response?) - Asserts the Canvas Data.
assertCard(expected, requireExact?, response?) - Asserts the Card response.
assertImage(expected, requireExact?, response?) - Asserts the Image response.
assertCollection(expected, requireExact?, response?) - Asserts the Collection response.
assertTable(expected, requireExact?, response?) - Asserts the Table response.
assertList(expected, requireExact?, response?) - Asserts the List response.
assertMedia(expected, requireExact?, response?) - Asserts the Media response.

Note: All assertXXX and getXXX functions get optional response as a last argument. If the response is not passed, the last turn response is used.

Note: You can use your own custom assertions on values using Chai, or any other node.js package, but the builtin assertions are likely to be more convenient for you. You can also access the full last turn response by calling getLatestResponse(), and run any custom checks on it.

Getters

getLatestResponse() - Gets the latest turn full response.
getSpeech(response?) - Gets the response Speech (concatenation of the first_simple and last_simple Speech)
getText(response?) - Gets the response Text (concatenation of the first_simple and last_simple Text)
getScene(response?) - Gets the response Scene.
getIntent(response?) - Gets the response Intent.
getIsConversationEnded(response?) - Returns whether the conversation ended in the response.
getSessionParam(name, response?) - Gets the response value of a session storage parameter.
getUserParam(name, response?) - Gets the response value of a user storage parameter.
getHomeParam(name, response?) - Gets the response value of a home storage parameter.
getCanvasURL(response?) - Gets the Canvas URL.
getCanvasData(response?) - Gets the Canvas Data.
getContent(response?) - Gets the Prompt Content, if exists.
getCard(response?) - Gets the Prompt Card, if exists.
getCollection(response?) - Gets the Prompt Collection, if exists.
getImage(response?) - Gets the Prompt Image, if exists.
getTable(response?) - Gets the Prompt Table, if exists.
getList(response?) - Gets the Prompt List, if exists.
getMedia(response?) - Gets the Prompt Media, if exists.

Match Intents

This are assertions that are run as standalone NLU versification (not in the context of conversation):

assertTopMatchedIntent(query, expectedIntent, place, queryLanguage) - Asserts the expected intent is in the top N matched intent to a given query, in the given language.
assertMatchIntentsFromYamlFile(yamlFile, queriesLanguage?) - Checks all the queries intent assertions in the yaml file.
getMatchIntentsList(query, queryLanguage) - Gets the matched intents' names using the matchIntents API call.
getMatchIntentsList(query, queryLanguage) - Gets the intents for the checked query using the matchIntents API call.

Note: Make sure to set the language code and NOT locale code as the queryLanguage.

Troubleshooting

If updatePreview is failing on 'callUpdatePreview: Precondition check failed', verify that you are able to simulate your Action in the console simulator.

Known issues

Implicit invocation methods, like built-in intents, cannot be tested.
Testing transactions is not yet supported.
Testing NO_INPUT events is not supported.

References & Issues

Questions? Go to StackOverflow or Assistant Developer Community on Reddit.
For bugs, please report an issue on Github.
Actions on Google Documentation
Actions on Google Codelabs.

Make Contributions

Please read and follow the steps in the CONTRIBUTING.md.

License

See LICENSE.

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