Interactivity API: Add missing tests for body, init and on dire…

…ctives (#52952)

* Add tests for wp-body

* Simplify wp-body directive

* Add tests for wp-init

* Add tests for `wp-on` directive

* Rename fakeshow to show-mock in init tests

* Remove unnecessary part of `wp-show-mock`

* Subscribe to context changes inside `initOne`

---------

Co-authored-by: Luis Herranz <luisherranz@gmail.com>

packages/e2e-tests/plugins/interactive-blocks/directive-body/block.json

@@ -0,0 +1,14 @@
+{
+	"apiVersion": 2,
+	"name": "test/directive-body",
+	"title": "E2E Interactivity tests - directive body",
+	"category": "text",
+	"icon": "heart",
+	"description": "",
+	"supports": {
+		"interactivity": true
+	},
+	"textdomain": "e2e-interactivity",
+	"viewScript": "directive-body-view",
+	"render": "file:./render.php"
+}

packages/e2e-tests/plugins/interactive-blocks/directive-body/render.php

@@ -0,0 +1,22 @@
+<?php
+/**
+ * HTML for testing the directive `data-wp-body`.
+ *
+ * @package gutenberg-test-interactive-blocks
+ */
+
+?>
+<div
+	data-wp-interactive
+	data-wp-context='{"text":"text-1"}'
+>
+	<div data-testid="container">
+		<aside data-wp-body data-testid="element with data-wp-body">
+			<p data-wp-text="context.text" data-testid="text">initial</p>
+		</aside>
+	</div>
+	<button
+		data-wp-on--click="actions.toggleText"
+		data-testid="toggle text"
+	>toggle text</button>
+</div>

packages/e2e-tests/plugins/interactive-blocks/directive-body/view.js

@@ -0,0 +1,11 @@
+( ( { wp } ) => {
+	const { store } = wp.interactivity;
+
+	store( {
+		actions: {
+			toggleText: ( { context } ) => {
+				context.text = context.text === 'text-1' ? 'text-2' : 'text-1';
+			},
+		},
+	} );
+} )( window );

packages/e2e-tests/plugins/interactive-blocks/directive-init/block.json

@@ -0,0 +1,14 @@
+{
+	"apiVersion": 2,
+	"name": "test/directive-init",
+	"title": "E2E Interactivity tests - directive init",
+	"category": "text",
+	"icon": "heart",
+	"description": "",
+	"supports": {
+		"interactivity": true
+	},
+	"textdomain": "e2e-interactivity",
+	"viewScript": "directive-init-view",
+	"render": "file:./render.php"
+}

packages/e2e-tests/plugins/interactive-blocks/directive-init/render.php

@@ -0,0 +1,42 @@
+<?php
+/**
+ * HTML for testing the directive `data-wp-init`.
+ *
+ * @package gutenberg-test-interactive-blocks
+ */
+
+?>
+<div data-wp-interactive>
+	<div
+		data-testid="single init"
+		data-wp-context='{"isReady":[false],"calls":[0]}'
+		data-wp-init="actions.initOne"
+	>
+		<p data-wp-text="selector.isReady" data-testid="isReady">false</p>
+		<p data-wp-text="selector.calls" data-testid="calls">0</p>
+		<button data-wp-on--click="actions.reset">reset</button>
+	</div>
+	<div
+		data-testid="multiple inits"
+		data-wp-context='{"isReady":[false,false],"calls":[0,0]}'
+		data-wp-init--one="actions.initOne"
+		data-wp-init--two="actions.initTwo"
+	>
+		<p data-wp-text="selector.isReady" data-testid="isReady">false,false</p>
+		<p data-wp-text="selector.calls" data-testid="calls">0,0</p>
+	</div>
+	<div
+		data-testid="init show"
+		data-wp-context='{"isVisible":true,"isMounted":false}'
+	>
+		<div data-wp-show-mock="context.isVisible" data-testid="show">
+			<span data-wp-init="actions.initMount">Initially visible</span>
+		</div>
+		<button data-wp-on--click="actions.toggle" data-testid="toggle">
+			toggle
+		</button>
+		<p data-wp-text="selector.isMounted" data-testid="isMounted">
+			true
+		</p>
+	</div>
+</div>

packages/e2e-tests/plugins/interactive-blocks/directive-init/view.js

@@ -0,0 +1,64 @@
+( ( { wp } ) => {
+	const { store, directive, useContext } = wp.interactivity;
+
+	// Mock `data-wp-show` directive to test when things are removed from the
+	// DOM.  Replace with `data-wp-show` when it's ready.
+	directive(
+		'show-mock',
+		( {
+			directives: {
+				'show-mock': { default: showMock },
+			},
+			element,
+			evaluate,
+			context,
+		} ) => {
+			const contextValue = useContext( context );
+			if ( ! evaluate( showMock, { context: contextValue } ) ) {
+				return null;
+			}
+			return element;
+		}
+	);
+
+
+	store( {
+		selector: {
+			isReady: ({ context: { isReady } }) => {
+				return isReady
+				.map(v => v ? 'true': 'false')
+				.join(',');
+			},
+			calls: ({ context: { calls } }) => {
+				return calls.join(',');
+			},
+			isMounted: ({ context }) => {
+				return context.isMounted ? 'true' : 'false';
+			},
+		},
+		actions: {
+			initOne: ( { context: { isReady, calls } } ) => {
+				isReady[0] = true;
+				// Subscribe to changes in that prop.
+				isReady[0] = isReady[0];
+				calls[0]++;
+			},
+			initTwo: ( { context: { isReady, calls } } ) => {
+				isReady[1] = true;
+				calls[1]++;
+			},
+			initMount: ( { context } ) => {
+				context.isMounted = true;
+				return () => {
+					context.isMounted = false;
+				}
+			},
+			reset: ( { context: { isReady } } ) => {
+				isReady.fill(false);
+			},
+			toggle: ( { context } ) => {
+				context.isVisible = ! context.isVisible;
+			},
+		},
+	} );
+} )( window );

packages/e2e-tests/plugins/interactive-blocks/directive-on/block.json

@@ -0,0 +1,14 @@
+{
+	"apiVersion": 2,
+	"name": "test/directive-on",
+	"title": "E2E Interactivity tests - directive on",
+	"category": "text",
+	"icon": "heart",
+	"description": "",
+	"supports": {
+		"interactivity": true
+	},
+	"textdomain": "e2e-interactivity",
+	"viewScript": "directive-on-view",
+	"render": "file:./render.php"
+}

packages/e2e-tests/plugins/interactive-blocks/directive-on/render.php

@@ -0,0 +1,52 @@
+<?php
+/**
+ * HTML for testing the directive `data-wp-on`.
+ *
+ * @package gutenberg-test-interactive-blocks
+ */
+
+?>
+<div data-wp-interactive>
+	<div>
+		<p data-wp-text="state.counter" data-testid="counter">0</p>
+		<button
+			data-testid="button"
+			data-wp-on--click="actions.clickHandler"
+		>Click me!</button>
+	</div>
+	<div>
+		<p data-wp-text="state.text" data-testid="text">initial</p>
+		<input
+			type="text"
+			value="initial"
+			data-testid="input"
+			data-wp-on--input="actions.inputHandler"
+		>
+	</div>
+	<div data-wp-context='{"option":"undefined"}'>
+		<p data-wp-text="context.option" data-testid="option">0</p>
+		<select
+			name="pets"
+			value="undefined"
+			data-testid="select"
+			data-wp-on--change="actions.selectHandler"
+		>
+			<option value="undefined">Choose an option...</option>
+			<option value="dog">Dog</option>
+			<option value="cat">Cat</option>
+		</select>
+	</div>
+	<div
+		data-wp-on--customevent="actions.customEventHandler"
+		data-wp-context='{"customEvents":0}'
+	>
+		<p
+			data-wp-text="context.customEvents"
+			data-testid="custom events counter"
+		>0</p>
+		<button
+			data-testid="custom events button"
+			data-wp-on--click="actions.clickHandler"
+		>Click me!</button>
+	</div>
+</div>

packages/e2e-tests/plugins/interactive-blocks/directive-on/view.js

@@ -0,0 +1,27 @@
+( ( { wp } ) => {
+	const { store } = wp.interactivity;
+
+	store( {
+		state: {
+			counter: 0,
+			text: ''
+		},
+		actions: {
+			clickHandler: ( { state, event } ) => {
+				state.counter += 1;
+				event.target.dispatchEvent(
+					new CustomEvent( 'customevent', { bubbles: true } )
+				);
+			},
+			inputHandler: ( { state, event } ) => {
+				state.text = event.target.value;
+			},
+			selectHandler: ( { context, event } ) => {
+				context.option = event.target.value;
+			},
+			customEventHandler: ({ context }) => {
+				context.customEvents += 1;
+			},
+		},
+	} );
+} )( window );

packages/interactivity/src/directives.js

@@ -55,13 +55,8 @@ export default () => {
 	);
 
 	// data-wp-body
-	directive( 'body', ( { props: { children }, context: inherited } ) => {
-		const { Provider } = inherited;
-		const inheritedValue = useContext( inherited );
-		return createPortal(
-			<Provider value={ inheritedValue }>{ children }</Provider>,
-			document.body
-		);
+	directive( 'body', ( { props: { children } } ) => {
+		return createPortal( children, document.body );
 	} );
 
 	// data-wp-effect--[name]

test/e2e/specs/interactivity/directive-init.spec.ts

@@ -0,0 +1,76 @@
+/**
+ * Internal dependencies
+ */
+import { test, expect } from './fixtures';
+
+test.describe( 'data-wp-init', () => {
+	test.beforeAll( async ( { interactivityUtils: utils } ) => {
+		await utils.activatePlugins();
+		await utils.addPostWithBlock( 'test/directive-init' );
+	} );
+
+	test.beforeEach( async ( { interactivityUtils: utils, page } ) => {
+		await page.goto( utils.getLink( 'test/directive-init' ) );
+	} );
+
+	test.afterAll( async ( { interactivityUtils: utils } ) => {
+		await utils.deactivatePlugins();
+		await utils.deleteAllPosts();
+	} );
+
+	test( 'should run when the block renders', async ( { page } ) => {
+		const el = page.getByTestId( 'single init' );
+		await expect( el.getByTestId( 'isReady' ) ).toHaveText( 'true' );
+		await expect( el.getByTestId( 'calls' ) ).toHaveText( '1' );
+	} );
+
+	test( 'should not run again if accessed signals change', async ( {
+		page,
+	} ) => {
+		const el = page.getByTestId( 'single init' );
+		await expect( el.getByTestId( 'isReady' ) ).toHaveText( 'true' );
+		await el.getByRole( 'button' ).click();
+		await expect( el.getByTestId( 'isReady' ) ).toHaveText( 'false' );
+		await expect( el.getByTestId( 'calls' ) ).toHaveText( '1' );
+	} );
+
+	test( 'should run multiple inits if defined', async ( { page } ) => {
+		const el = page.getByTestId( 'multiple inits' );
+		await expect( el.getByTestId( 'isReady' ) ).toHaveText( 'true,true' );
+		await expect( el.getByTestId( 'calls' ) ).toHaveText( '1,1' );
+	} );
+
+	test( 'should run the init callback when the element is unmounted', async ( {
+		page,
+	} ) => {
+		const container = page.getByTestId( 'init show' );
+		const show = container.getByTestId( 'show' );
+		const toggle = container.getByTestId( 'toggle' );
+		const isMounted = container.getByTestId( 'isMounted' );
+
+		await expect( show ).toHaveText( 'Initially visible' );
+		await expect( isMounted ).toHaveText( 'true' );
+
+		await toggle.click();
+
+		await expect( show ).not.toBeVisible();
+		await expect( isMounted ).toHaveText( 'false' );
+	} );
+
+	test( 'should run init when the element is mounted', async ( { page } ) => {
+		const container = page.getByTestId( 'init show' );
+		const show = container.getByTestId( 'show' );
+		const toggle = container.getByTestId( 'toggle' );
+		const isMounted = container.getByTestId( 'isMounted' );
+
+		await toggle.click();
+
+		await expect( show ).not.toBeVisible();
+		await expect( isMounted ).toHaveText( 'false' );
+
+		await toggle.click();
+
+		await expect( show ).toHaveText( 'Initially visible' );
+		await expect( isMounted ).toHaveText( 'true' );
+	} );
+} );