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chore(docs): Cleanup plugin docs (#4079)
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* Removed redundent information in `/docs/plugins.md`.  Now redirects to
  `/lib/plugins.ts`.
* Comment cleanup in `/lib/plugins.ts`
* Export some necessary types in `/lib/index.ts`
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@sjelin
sjelin authored Feb 8, 2017
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274 changes: 19 additions & 255 deletions docs/plugins.md
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Original file line number Diff line number Diff line change
Expand Up @@ -38,14 +38,6 @@ exports.config = {
};
```

An example of using the 'ngHint' plugin is shown below.

```javascript
plugins: [{
path: 'node_modules/protractor/plugins/ngHint',
}]
```

If your plugin is a node module, you may use it with the `package` option. For
example, if you did `npm install example-protractor-plugin` your config would
look like:
Expand All @@ -56,8 +48,8 @@ look like:
}]
```

Finally, if you are writing a small plugin which will only be used by one config
file, you can write the plugin inline into the config:
If you are writing a small plugin which will only be used by one config file,
you can write the plugin inline into the config:

```javascript
plugins: [{
Expand All @@ -69,253 +61,25 @@ file, you can write the plugin inline into the config:
}]
```

When using plugins, you should specify exactly one of `path`, `package`, or
`inline`.

Writing Plugins
---------------

Plugins are designed to work with any test framework (Jasmine, Mocha, etc),
so they use generic hooks which Protractor provides. Plugins may change
the output of Protractor by returning a results object.

Plugins are node modules which export an object with the following API:

```js
/**
* Sets up plugins before tests are run. This is called after the WebDriver
* session has been started, but before the test framework has been set up.
*
* @this {Object} bound to module.exports
*
* @throws {*} If this function throws an error, a failed assertion is added to
* the test results.
*
* @return {q.Promise=} Can return a promise, in which case protractor will wait
* for the promise to resolve before continuing. If the promise is
* rejected, a failed assertion is added to the test results.
*/
exports.setup = function() {};

/**
* This is called before the test have been run but after the test framework has
* been set up. Analogous to a config file's `onPreare`.
*
* Very similar to using `setup`, but allows you to access framework-specific
* variables/funtions (e.g. `jasmine.getEnv().addReporter()`)
*
* @throws {*} If this function throws an error, a failed assertion is added to
* the test results.
*
* @return {Q.Promise=} Can return a promise, in which case protractor will wait
* for the promise to resolve before continuing. If the promise is
* rejected, a failed assertion is added to the test results.
*/
exports.onPrepare = function() {};

/**
* This is called after the tests have been run, but before the WebDriver
* session has been terminated.
*
* @this {Object} bound to module.exports
*
* @throws {*} If this function throws an error, a failed assertion is added to
* the test results.
*
* @return {q.Promise=} Can return a promise, in which case protractor will wait
* for the promise to resolve before continuing. If the promise is
* rejected, a failed assertion is added to the test results.
*/
exports.teardown = function() {};

/**
* Called after the test results have been finalized and any jobs have been
* updated (if applicable).
*
* @this {Object} bound to module.exports
*
* @throws {*} If this function throws an error, it is outputted to the console
*
* @return {q.Promise=} Can return a promise, in which case protractor will wait
* for the promise to resolve before continuing. If the promise is
* rejected, an error is logged to the console.
*/
exports.postResults = function() {};

/**
* Called after each test block (in Jasmine, this means an `it` block)
* completes.
*
* @param {boolean} passed True if the test passed.
* @param {Object} testInfo information about the test which just ran.
*
* @this {Object} bound to module.exports
*
* @throws {*} If this function throws an error, a failed assertion is added to
* the test results.
*
* @return {q.Promise=} Can return a promise, in which case protractor will wait
* for the promise to resolve before outputting test results. Protractor
* will *not* wait before executing the next test, however. If the promise
* is rejected, a failed assertion is added to the test results.
*/
exports.postTest = function(passed, testInfo) {};

/**
* This is called inside browser.get() directly after the page loads, and before
* angular bootstraps.
*
* @this {Object} bound to module.exports
*
* @throws {*} If this function throws an error, a failed assertion is added to
* the test results.
*
* @return {q.Promise=} Can return a promise, in which case protractor will wait
* for the promise to resolve before continuing. If the promise is
* rejected, a failed assertion is added to the test results.
*/
exports.onPageLoad = function() {};

/**
* This is called inside browser.get() directly after angular is done
* bootstrapping/synchronizing. If browser.ignoreSynchronization is true, this
* will not be called.
*
* @this {Object} bound to module.exports
*
* @throws {*} If this function throws an error, a failed assertion is added to
* the test results.
*
* @return {q.Promise=} Can return a promise, in which case protractor will wait
* for the promise to resolve before continuing. If the promise is
* rejected, a failed assertion is added to the test results.
*/
exports.onPageStable = function() {};

/**
* Between every webdriver action, Protractor calls browser.waitForAngular() to
* make sure that Angular has no outstanding $http or $timeout calls.
* You can use waitForPromise() to have Protractor additionally wait for your
* custom promise to be resolved inside of browser.waitForAngular().
*
* @this {Object} bound to module.exports
*
* @throws {*} If this function throws an error, a failed assertion is added to
* the test results.
*
* @return {q.Promise=} Can return a promise, in which case protractor will wait
* for the promise to resolve before continuing. If the promise is
* rejected, a failed assertion is added to the test results, and protractor
* will continue onto the next command. If nothing is returned or something
* other than a promise is returned, protractor will continue onto the next
* command.
*/
exports.waitForPromise = function() {};

/**
* Between every webdriver action, Protractor calls browser.waitForAngular() to
* make sure that Angular has no outstanding $http or $timeout calls.
* You can use waitForCondition() to have Protractor additionally wait for your
* custom condition to be truthy.
*
* @this {Object} bound to module.exports
*
* @throws {*} If this function throws an error, a failed assertion is added to
* the test results.
*
* @return {q.Promise<boolean>|boolean} If truthy, Protractor will continue onto
* the next command. If falsy, webdriver will continuously re-run this
* function until it is truthy. If a rejected promise is returned, a failed
* assertion is added to the test results, and protractor will continue onto
* the next command.
*/
exports.waitForCondition = function() {};

/**
* Used when reporting results.
*
* If you do not specify this property, it will be filled in with something
* reasonable (e.g. the plugin's path)
*
* @type {string}
*/
exports.name = '';


/**
* Used to turn off default checks for angular stability
*
* Normally Protractor waits for all $timeout and $http calls to be processed
* before executing the next command. This can be disabled using
* browser.ignoreSynchronization, but that will also disable any
* <Plugin>.waitForPromise or <Plugin>.waitForCondition checks. If you want to
* disable synchronization with angular, but leave in tact any custom plugin
* synchronization, this is the option for you.
*
* This is used by users who want to replace Protractor's synchronization code
* with their own.
*
* @type {boolean}
*/
exports.skipAngularStability
```

Each of these exported properties are optional.
Plugins are node modules that export an object implementing the
`ProtractorPlugin` interface. Please see [`/lib/plugins.ts`](
/lib/plugins.ts#L25) for a list of hooks that are available to plugins.

### Provided properties and functions
##### Provided properties and functions

Extra properties are added to your `module.exports` when Protractor loads your
plugin. These allow your plugin to do things like access its configuration
block or add test results. They are as follows:

```js
/**
* The plugin configuration object. Note that this is not the entire
* Protractor config object, just the entry in the plugins array for this
* plugin.
*
* @type {Object}
*/
exports.config;

/**
* Adds a failed assertion to the test's results.
*
* @param {string} message The error message for the failed assertion
* @param {specName: string, stackTrace: string} options Some optional extra
* information about the assertion:
* - specName The name of the spec which this assertion belongs to.
* Defaults to `PLUGIN_NAME + ' Plugin Tests'`.
* - stackTrace The stack trace for the failure. Defaults to undefined.
* Defaults to `{}`.
*
* @throws {Error} Throws an error if called after results have been reported
*/
exports.addFailure(message, options);

/**
* Adds a passed assertion to the test's results.
*
* @param {specName: string} options Extra information about the assertion:
* - specName The name of the spec which this assertion belongs to.
* Defaults to `PLUGIN_NAME + ' Plugin Tests'`.
* Defaults to `{}`.
*
* @throws {Error} Throws an error if called after results have been reported
*/
exports.addSuccess(options);

/**
* Warns the user that something is problematic.
*
* @param {string} message The message to warn the user about
* @param {specName: string} options Extra information about the assertion:
* - specName The name of the spec which this assertion belongs to.
* Defaults to `PLUGIN_NAME + ' Plugin Tests'`.
* Defaults to `{}`.
*/
exports.addWarning(message, options);
```

If you specify any of these properties in your plugin file, they will be
overwritten.
block or add test results. See `/lib/plugins.ts` for the full list.

### Writing Plugins in TypeScript

Expand Down Expand Up @@ -372,15 +136,6 @@ First Party Plugins
github repo [angular/protractor-timeline-plugin]
(https://github.com/angular/protractor-timeline-plugin).

* ngHint Plugin

The ngHint plugin uses [Angular Hint](https://github.com/angular/angular-hint)
to generate run-time hinting and then turns these hints into Protractor tests.
It is published at the npm module [`protractor-ng-hint-plugin`]
(https://www.npmjs.com/package/protractor-ng-hint-plugin) and stored at the
github repo [angular/protractor-ng-hint-plugin]
(https://github.com/angular/protractor-ng-hint-plugin).

* Console Plugin (Chrome Only)

The console plugin checks the browser log after each test for warnings and
Expand All @@ -389,6 +144,15 @@ First Party Plugins
github repo [angular/protractor-console-plugin]
(https://github.com/angular/protractor-console-plugin).

* ngHint Plugin (NOT MAINTAINED)

The ngHint plugin uses [Angular Hint](https://github.com/angular/angular-hint)
to generate run-time hinting and then turns these hints into Protractor tests.
It is published at the npm module [`protractor-ng-hint-plugin`]
(https://www.npmjs.com/package/protractor-ng-hint-plugin) and stored at the
github repo [angular/protractor-ng-hint-plugin]
(https://github.com/angular/protractor-ng-hint-plugin).

Community Plugins
-----------------

Expand Down
5 changes: 4 additions & 1 deletion lib/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -2,20 +2,23 @@ import {ElementHelper, ProtractorBrowser} from './browser';
import {ElementArrayFinder, ElementFinder} from './element';
import {ProtractorExpectedConditions} from './expectedConditions';
import {ProtractorBy} from './locators';
import {PluginConfig, ProtractorPlugin} from './plugins';
import {Ptor} from './ptor';
import {Runner} from './runner';

// Re-export selenium-webdriver types.
export {ActionSequence, Browser, Builder, Button, Capabilities, Capability, error, EventEmitter, FileDetector, Key, logging, promise, Session, until, WebDriver, WebElement, WebElementPromise} from 'selenium-webdriver';

// Re-export public types.
export {ElementHelper, ProtractorBrowser} from './browser';
export {Config} from './config';
export {ElementArrayFinder, ElementFinder} from './element';
export {ProtractorExpectedConditions} from './expectedConditions';
export {ProtractorBy} from './locators';
export {Ptor} from './ptor';

export type Runner = Runner;
export type PluginConfig = PluginConfig;
export type ProtractorPlugin = ProtractorPlugin;

export let utils = {
firefox: require('selenium-webdriver/firefox'),
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