/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { __awaiter } from "tslib";
import { parallel } from './change-detection';
/**
 * Base class for component harnesses that all component harness authors should extend. This base
 * component harness provides the basic ability to locate element and sub-component harness. It
 * should be inherited when defining user's own harness.
 */
export class ComponentHarness {
    constructor(locatorFactory) {
        this.locatorFactory = locatorFactory;
    }
    /** Gets a `Promise` for the `TestElement` representing the host element of the component. */
    host() {
        return __awaiter(this, void 0, void 0, function* () {
            return this.locatorFactory.rootElement;
        });
    }
    /**
     * Gets a `LocatorFactory` for the document root element. This factory can be used to create
     * locators for elements that a component creates outside of its own root element. (e.g. by
     * appending to document.body).
     */
    documentRootLocatorFactory() {
        return this.locatorFactory.documentRootLocatorFactory();
    }
    /**
     * Creates an asynchronous locator function that can be used to find a `ComponentHarness` instance
     * or element under the host element of this `ComponentHarness`.
     * @param queries A list of queries specifying which harnesses and elements to search for:
     *   - A `string` searches for elements matching the CSS selector specified by the string.
     *   - A `ComponentHarness` constructor searches for `ComponentHarness` instances matching the
     *     given class.
     *   - A `HarnessPredicate` searches for `ComponentHarness` instances matching the given
     *     predicate.
     * @return An asynchronous locator function that searches for and returns a `Promise` for the
     *   first element or harness matching the given search criteria. Matches are ordered first by
     *   order in the DOM, and second by order in the queries list. If no matches are found, the
     *   `Promise` rejects. The type that the `Promise` resolves to is a union of all result types for
     *   each query.
     *
     * e.g. Given the following DOM: `<div id="d1" /><div id="d2" />`, and assuming
     * `DivHarness.hostSelector === 'div'`:
     * - `await ch.locatorFor(DivHarness, 'div')()` gets a `DivHarness` instance for `#d1`
     * - `await ch.locatorFor('div', DivHarness)()` gets a `TestElement` instance for `#d1`
     * - `await ch.locatorFor('span')()` throws because the `Promise` rejects.
     */
    locatorFor(...queries) {
        return this.locatorFactory.locatorFor(...queries);
    }
    /**
     * Creates an asynchronous locator function that can be used to find a `ComponentHarness` instance
     * or element under the host element of this `ComponentHarness`.
     * @param queries A list of queries specifying which harnesses and elements to search for:
     *   - A `string` searches for elements matching the CSS selector specified by the string.
     *   - A `ComponentHarness` constructor searches for `ComponentHarness` instances matching the
     *     given class.
     *   - A `HarnessPredicate` searches for `ComponentHarness` instances matching the given
     *     predicate.
     * @return An asynchronous locator function that searches for and returns a `Promise` for the
     *   first element or harness matching the given search criteria. Matches are ordered first by
     *   order in the DOM, and second by order in the queries list. If no matches are found, the
     *   `Promise` is resolved with `null`. The type that the `Promise` resolves to is a union of all
     *   result types for each query or null.
     *
     * e.g. Given the following DOM: `<div id="d1" /><div id="d2" />`, and assuming
     * `DivHarness.hostSelector === 'div'`:
     * - `await ch.locatorForOptional(DivHarness, 'div')()` gets a `DivHarness` instance for `#d1`
     * - `await ch.locatorForOptional('div', DivHarness)()` gets a `TestElement` instance for `#d1`
     * - `await ch.locatorForOptional('span')()` gets `null`.
     */
    locatorForOptional(...queries) {
        return this.locatorFactory.locatorForOptional(...queries);
    }
    /**
     * Creates an asynchronous locator function that can be used to find `ComponentHarness` instances
     * or elements under the host element of this `ComponentHarness`.
     * @param queries A list of queries specifying which harnesses and elements to search for:
     *   - A `string` searches for elements matching the CSS selector specified by the string.
     *   - A `ComponentHarness` constructor searches for `ComponentHarness` instances matching the
     *     given class.
     *   - A `HarnessPredicate` searches for `ComponentHarness` instances matching the given
     *     predicate.
     * @return An asynchronous locator function that searches for and returns a `Promise` for all
     *   elements and harnesses matching the given search criteria. Matches are ordered first by
     *   order in the DOM, and second by order in the queries list. If an element matches more than
     *   one `ComponentHarness` class, the locator gets an instance of each for the same element. If
     *   an element matches multiple `string` selectors, only one `TestElement` instance is returned
     *   for that element. The type that the `Promise` resolves to is an array where each element is
     *   the union of all result types for each query.
     *
     * e.g. Given the following DOM: `<div id="d1" /><div id="d2" />`, and assuming
     * `DivHarness.hostSelector === 'div'` and `IdIsD1Harness.hostSelector === '#d1'`:
     * - `await ch.locatorForAll(DivHarness, 'div')()` gets `[
     *     DivHarness, // for #d1
     *     TestElement, // for #d1
     *     DivHarness, // for #d2
     *     TestElement // for #d2
     *   ]`
     * - `await ch.locatorForAll('div', '#d1')()` gets `[
     *     TestElement, // for #d1
     *     TestElement // for #d2
     *   ]`
     * - `await ch.locatorForAll(DivHarness, IdIsD1Harness)()` gets `[
     *     DivHarness, // for #d1
     *     IdIsD1Harness, // for #d1
     *     DivHarness // for #d2
     *   ]`
     * - `await ch.locatorForAll('span')()` gets `[]`.
     */
    locatorForAll(...queries) {
        return this.locatorFactory.locatorForAll(...queries);
    }
    /**
     * Flushes change detection and async tasks in the Angular zone.
     * In most cases it should not be necessary to call this manually. However, there may be some edge
     * cases where it is needed to fully flush animation events.
     */
    forceStabilize() {
        return __awaiter(this, void 0, void 0, function* () {
            return this.locatorFactory.forceStabilize();
        });
    }
    /**
     * Waits for all scheduled or running async tasks to complete. This allows harness
     * authors to wait for async tasks outside of the Angular zone.
     */
    waitForTasksOutsideAngular() {
        return __awaiter(this, void 0, void 0, function* () {
            return this.locatorFactory.waitForTasksOutsideAngular();
        });
    }
}
/**
 * Base class for component harnesses that authors should extend if they anticipate that consumers
 * of the harness may want to access other harnesses within the `<ng-content>` of the component.
 */
export class ContentContainerComponentHarness extends ComponentHarness {
    getChildLoader(selector) {
        return __awaiter(this, void 0, void 0, function* () {
            return (yield this.getRootHarnessLoader()).getChildLoader(selector);
        });
    }
    getAllChildLoaders(selector) {
        return __awaiter(this, void 0, void 0, function* () {
            return (yield this.getRootHarnessLoader()).getAllChildLoaders(selector);
        });
    }
    getHarness(query) {
        return __awaiter(this, void 0, void 0, function* () {
            return (yield this.getRootHarnessLoader()).getHarness(query);
        });
    }
    getAllHarnesses(query) {
        return __awaiter(this, void 0, void 0, function* () {
            return (yield this.getRootHarnessLoader()).getAllHarnesses(query);
        });
    }
    /**
     * Gets the root harness loader from which to start
     * searching for content contained by this harness.
     */
    getRootHarnessLoader() {
        return __awaiter(this, void 0, void 0, function* () {
            return this.locatorFactory.rootHarnessLoader();
        });
    }
}
/**
 * A class used to associate a ComponentHarness class with predicates functions that can be used to
 * filter instances of the class.
 */
export class HarnessPredicate {
    constructor(harnessType, options) {
        this.harnessType = harnessType;
        this._predicates = [];
        this._descriptions = [];
        this._addBaseOptions(options);
    }
    /**
     * Checks if the specified nullable string value matches the given pattern.
     * @param value The nullable string value to check, or a Promise resolving to the
     *   nullable string value.
     * @param pattern The pattern the value is expected to match. If `pattern` is a string,
     *   `value` is expected to match exactly. If `pattern` is a regex, a partial match is
     *   allowed. If `pattern` is `null`, the value is expected to be `null`.
     * @return Whether the value matches the pattern.
     */
    static stringMatches(value, pattern) {
        return __awaiter(this, void 0, void 0, function* () {
            value = yield value;
            if (pattern === null) {
                return value === null;
            }
            else if (value === null) {
                return false;
            }
            return typeof pattern === 'string' ? value === pattern : pattern.test(value);
        });
    }
    /**
     * Adds a predicate function to be run against candidate harnesses.
     * @param description A description of this predicate that may be used in error messages.
     * @param predicate An async predicate function.
     * @return this (for method chaining).
     */
    add(description, predicate) {
        this._descriptions.push(description);
        this._predicates.push(predicate);
        return this;
    }
    /**
     * Adds a predicate function that depends on an option value to be run against candidate
     * harnesses. If the option value is undefined, the predicate will be ignored.
     * @param name The name of the option (may be used in error messages).
     * @param option The option value.
     * @param predicate The predicate function to run if the option value is not undefined.
     * @return this (for method chaining).
     */
    addOption(name, option, predicate) {
        if (option !== undefined) {
            this.add(`${name} = ${_valueAsString(option)}`, item => predicate(item, option));
        }
        return this;
    }
    /**
     * Filters a list of harnesses on this predicate.
     * @param harnesses The list of harnesses to filter.
     * @return A list of harnesses that satisfy this predicate.
     */
    filter(harnesses) {
        return __awaiter(this, void 0, void 0, function* () {
            if (harnesses.length === 0) {
                return [];
            }
            const results = yield parallel(() => harnesses.map(h => this.evaluate(h)));
            return harnesses.filter((_, i) => results[i]);
        });
    }
    /**
     * Evaluates whether the given harness satisfies this predicate.
     * @param harness The harness to check
     * @return A promise that resolves to true if the harness satisfies this predicate,
     *   and resolves to false otherwise.
     */
    evaluate(harness) {
        return __awaiter(this, void 0, void 0, function* () {
            const results = yield parallel(() => this._predicates.map(p => p(harness)));
            return results.reduce((combined, current) => combined && current, true);
        });
    }
    /** Gets a description of this predicate for use in error messages. */
    getDescription() {
        return this._descriptions.join(', ');
    }
    /** Gets the selector used to find candidate elements. */
    getSelector() {
        // We don't have to go through the extra trouble if there are no ancestors.
        if (!this._ancestor) {
            return (this.harnessType.hostSelector || '').trim();
        }
        const [ancestors, ancestorPlaceholders] = _splitAndEscapeSelector(this._ancestor);
        const [selectors, selectorPlaceholders] = _splitAndEscapeSelector(this.harnessType.hostSelector || '');
        const result = [];
        // We have to add the ancestor to each part of the host compound selector, otherwise we can get
        // incorrect results. E.g. `.ancestor .a, .ancestor .b` vs `.ancestor .a, .b`.
        ancestors.forEach(escapedAncestor => {
            const ancestor = _restoreSelector(escapedAncestor, ancestorPlaceholders);
            return selectors.forEach(escapedSelector => result.push(`${ancestor} ${_restoreSelector(escapedSelector, selectorPlaceholders)}`));
        });
        return result.join(', ');
    }
    /** Adds base options common to all harness types. */
    _addBaseOptions(options) {
        this._ancestor = options.ancestor || '';
        if (this._ancestor) {
            this._descriptions.push(`has ancestor matching selector "${this._ancestor}"`);
        }
        const selector = options.selector;
        if (selector !== undefined) {
            this.add(`host matches selector "${selector}"`, (item) => __awaiter(this, void 0, void 0, function* () {
                return (yield item.host()).matchesSelector(selector);
            }));
        }
    }
}
/** Represent a value as a string for the purpose of logging. */
function _valueAsString(value) {
    if (value === undefined) {
        return 'undefined';
    }
    // `JSON.stringify` doesn't handle RegExp properly, so we need a custom replacer.
    try {
        return JSON.stringify(value, (_, v) => {
            if (v instanceof RegExp) {
                return `/${v.toString()}/`;
            }
            return typeof v === 'string' ? v.replace('/\//g', '\\/') : v;
        }).replace(/"\/\//g, '\\/').replace(/\/\/"/g, '\\/').replace(/\\\//g, '/');
    }
    catch (_a) {
        // `JSON.stringify` will throw if the object is cyclical,
        // in this case the best we can do is report the value as `{...}`.
        return '{...}';
    }
}
/**
 * Splits up a compound selector into its parts and escapes any quoted content. The quoted content
 * has to be escaped, because it can contain commas which will throw throw us off when trying to
 * split it.
 * @param selector Selector to be split.
 * @returns The escaped string where any quoted content is replaced with a placeholder. E.g.
 * `[foo="bar"]` turns into `[foo=__cdkPlaceholder-0__]`. Use `_restoreSelector` to restore
 * the placeholders.
 */
function _splitAndEscapeSelector(selector) {
    const placeholders = [];
    // Note that the regex doesn't account for nested quotes so something like `"ab'cd'e"` will be
    // considered as two blocks. It's a bit of an edge case, but if we find that it's a problem,
    // we can make it a bit smarter using a loop. Use this for now since it's more readable and
    // compact. More complete implementation:
    // https://github.com/angular/angular/blob/bd34bc9e89f18a/packages/compiler/src/shadow_css.ts#L655
    const result = selector.replace(/(["'][^["']*["'])/g, (_, keep) => {
        const replaceBy = `__cdkPlaceholder-${placeholders.length}__`;
        placeholders.push(keep);
        return replaceBy;
    });
    return [result.split(',').map(part => part.trim()), placeholders];
}
/** Restores a selector whose content was escaped in `_splitAndEscapeSelector`. */
function _restoreSelector(selector, placeholders) {
    return selector.replace(/__cdkPlaceholder-(\d+)__/g, (_, index) => placeholders[+index]);
}
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {parallel} from './change-detection';\nimport {TestElement} from './test-element';\n\n/** An async function that returns a promise when called. */\nexport type AsyncFactoryFn<T> = () => Promise<T>;\n\n/** An async function that takes an item and returns a boolean promise */\nexport type AsyncPredicate<T> = (item: T) => Promise<boolean>;\n\n/** An async function that takes an item and an option value and returns a boolean promise. */\nexport type AsyncOptionPredicate<T, O> = (item: T, option: O) => Promise<boolean>;\n\n/**\n * A query for a `ComponentHarness`, which is expressed as either a `ComponentHarnessConstructor` or\n * a `HarnessPredicate`.\n */\nexport type HarnessQuery<T extends ComponentHarness> =\n    ComponentHarnessConstructor<T> | HarnessPredicate<T>;\n\n/**\n * The result type obtained when searching using a particular list of queries. This type depends on\n * the particular items being queried.\n * - If one of the queries is for a `ComponentHarnessConstructor<C1>`, it means that the result\n *   might be a harness of type `C1`\n * - If one of the queries is for a `HarnessPredicate<C2>`, it means that the result might be a\n *   harness of type `C2`\n * - If one of the queries is for a `string`, it means that the result might be a `TestElement`.\n *\n * Since we don't know for sure which query will match, the result type if the union of the types\n * for all possible results.\n *\n * e.g.\n * The type:\n * `LocatorFnResult&lt;[\n *   ComponentHarnessConstructor&lt;MyHarness&gt;,\n *   HarnessPredicate&lt;MyOtherHarness&gt;,\n *   string\n * ]&gt;`\n * is equivalent to:\n * `MyHarness | MyOtherHarness | TestElement`.\n */\nexport type LocatorFnResult<T extends (HarnessQuery<any> | string)[]> = {\n  [I in keyof T]:\n      // Map `ComponentHarnessConstructor<C>` to `C`.\n      T[I] extends new (...args: any[]) => infer C ? C :\n      // Map `HarnessPredicate<C>` to `C`.\n      T[I] extends { harnessType: new (...args: any[]) => infer C } ? C :\n      // Map `string` to `TestElement`.\n      T[I] extends string ? TestElement :\n      // Map everything else to `never` (should not happen due to the type constraint on `T`).\n      never;\n}[number];\n\n\n/**\n * Interface used to load ComponentHarness objects. This interface is used by test authors to\n * instantiate `ComponentHarness`es.\n */\nexport interface HarnessLoader {\n  /**\n   * Searches for an element with the given selector under the current instances's root element,\n   * and returns a `HarnessLoader` rooted at the matching element. If multiple elements match the\n   * selector, the first is used. If no elements match, an error is thrown.\n   * @param selector The selector for the root element of the new `HarnessLoader`\n   * @return A `HarnessLoader` rooted at the element matching the given selector.\n   * @throws If a matching element can't be found.\n   */\n  getChildLoader(selector: string): Promise<HarnessLoader>;\n\n  /**\n   * Searches for all elements with the given selector under the current instances's root element,\n   * and returns an array of `HarnessLoader`s, one for each matching element, rooted at that\n   * element.\n   * @param selector The selector for the root element of the new `HarnessLoader`\n   * @return A list of `HarnessLoader`s, one for each matching element, rooted at that element.\n   */\n  getAllChildLoaders(selector: string): Promise<HarnessLoader[]>;\n\n  /**\n   * Searches for an instance of the component corresponding to the given harness type under the\n   * `HarnessLoader`'s root element, and returns a `ComponentHarness` for that instance. If multiple\n   * matching components are found, a harness for the first one is returned. If no matching\n   * component is found, an error is thrown.\n   * @param query A query for a harness to create\n   * @return An instance of the given harness type\n   * @throws If a matching component instance can't be found.\n   */\n  getHarness<T extends ComponentHarness>(query: HarnessQuery<T>): Promise<T>;\n\n  /**\n   * Searches for all instances of the component corresponding to the given harness type under the\n   * `HarnessLoader`'s root element, and returns a list `ComponentHarness` for each instance.\n   * @param query A query for a harness to create\n   * @return A list instances of the given harness type.\n   */\n  getAllHarnesses<T extends ComponentHarness>(query: HarnessQuery<T>): Promise<T[]>;\n}\n\n/**\n * Interface used to create asynchronous locator functions used find elements and component\n * harnesses. This interface is used by `ComponentHarness` authors to create locator functions for\n * their `ComponentHarness` subclass.\n */\nexport interface LocatorFactory {\n  /** Gets a locator factory rooted at the document root. */\n  documentRootLocatorFactory(): LocatorFactory;\n\n  /** The root element of this `LocatorFactory` as a `TestElement`. */\n  rootElement: TestElement;\n\n  /**\n   * Creates an asynchronous locator function that can be used to find a `ComponentHarness` instance\n   * or element under the root element of this `LocatorFactory`.\n   * @param queries A list of queries specifying which harnesses and elements to search for:\n   *   - A `string` searches for elements matching the CSS selector specified by the string.\n   *   - A `ComponentHarness` constructor searches for `ComponentHarness` instances matching the\n   *     given class.\n   *   - A `HarnessPredicate` searches for `ComponentHarness` instances matching the given\n   *     predicate.\n   * @return An asynchronous locator function that searches for and returns a `Promise` for the\n   *   first element or harness matching the given search criteria. Matches are ordered first by\n   *   order in the DOM, and second by order in the queries list. If no matches are found, the\n   *   `Promise` rejects. The type that the `Promise` resolves to is a union of all result types for\n   *   each query.\n   *\n   * e.g. Given the following DOM: `<div id=\"d1\" /><div id=\"d2\" />`, and assuming\n   * `DivHarness.hostSelector === 'div'`:\n   * - `await lf.locatorFor(DivHarness, 'div')()` gets a `DivHarness` instance for `#d1`\n   * - `await lf.locatorFor('div', DivHarness)()` gets a `TestElement` instance for `#d1`\n   * - `await lf.locatorFor('span')()` throws because the `Promise` rejects.\n   */\n  locatorFor<T extends (HarnessQuery<any> | string)[]>(...queries: T):\n      AsyncFactoryFn<LocatorFnResult<T>>;\n\n  /**\n   * Creates an asynchronous locator function that can be used to find a `ComponentHarness` instance\n   * or element under the root element of this `LocatorFactory`.\n   * @param queries A list of queries specifying which harnesses and elements to search for:\n   *   - A `string` searches for elements matching the CSS selector specified by the string.\n   *   - A `ComponentHarness` constructor searches for `ComponentHarness` instances matching the\n   *     given class.\n   *   - A `HarnessPredicate` searches for `ComponentHarness` instances matching the given\n   *     predicate.\n   * @return An asynchronous locator function that searches for and returns a `Promise` for the\n   *   first element or harness matching the given search criteria. Matches are ordered first by\n   *   order in the DOM, and second by order in the queries list. If no matches are found, the\n   *   `Promise` is resolved with `null`. The type that the `Promise` resolves to is a union of all\n   *   result types for each query or null.\n   *\n   * e.g. Given the following DOM: `<div id=\"d1\" /><div id=\"d2\" />`, and assuming\n   * `DivHarness.hostSelector === 'div'`:\n   * - `await lf.locatorForOptional(DivHarness, 'div')()` gets a `DivHarness` instance for `#d1`\n   * - `await lf.locatorForOptional('div', DivHarness)()` gets a `TestElement` instance for `#d1`\n   * - `await lf.locatorForOptional('span')()` gets `null`.\n   */\n  locatorForOptional<T extends (HarnessQuery<any> | string)[]>(...queries: T):\n      AsyncFactoryFn<LocatorFnResult<T> | null>;\n\n  /**\n   * Creates an asynchronous locator function that can be used to find `ComponentHarness` instances\n   * or elements under the root element of this `LocatorFactory`.\n   * @param queries A list of queries specifying which harnesses and elements to search for:\n   *   - A `string` searches for elements matching the CSS selector specified by the string.\n   *   - A `ComponentHarness` constructor searches for `ComponentHarness` instances matching the\n   *     given class.\n   *   - A `HarnessPredicate` searches for `ComponentHarness` instances matching the given\n   *     predicate.\n   * @return An asynchronous locator function that searches for and returns a `Promise` for all\n   *   elements and harnesses matching the given search criteria. Matches are ordered first by\n   *   order in the DOM, and second by order in the queries list. If an element matches more than\n   *   one `ComponentHarness` class, the locator gets an instance of each for the same element. If\n   *   an element matches multiple `string` selectors, only one `TestElement` instance is returned\n   *   for that element. The type that the `Promise` resolves to is an array where each element is\n   *   the union of all result types for each query.\n   *\n   * e.g. Given the following DOM: `<div id=\"d1\" /><div id=\"d2\" />`, and assuming\n   * `DivHarness.hostSelector === 'div'` and `IdIsD1Harness.hostSelector === '#d1'`:\n   * - `await lf.locatorForAll(DivHarness, 'div')()` gets `[\n   *     DivHarness, // for #d1\n   *     TestElement, // for #d1\n   *     DivHarness, // for #d2\n   *     TestElement // for #d2\n   *   ]`\n   * - `await lf.locatorForAll('div', '#d1')()` gets `[\n   *     TestElement, // for #d1\n   *     TestElement // for #d2\n   *   ]`\n   * - `await lf.locatorForAll(DivHarness, IdIsD1Harness)()` gets `[\n   *     DivHarness, // for #d1\n   *     IdIsD1Harness, // for #d1\n   *     DivHarness // for #d2\n   *   ]`\n   * - `await lf.locatorForAll('span')()` gets `[]`.\n   */\n  locatorForAll<T extends (HarnessQuery<any> | string)[]>(...queries: T):\n      AsyncFactoryFn<LocatorFnResult<T>[]>;\n\n  /** @return A `HarnessLoader` rooted at the root element of this `LocatorFactory`. */\n  rootHarnessLoader(): Promise<HarnessLoader>;\n\n  /**\n   * Gets a `HarnessLoader` instance for an element under the root of this `LocatorFactory`.\n   * @param selector The selector for the root element.\n   * @return A `HarnessLoader` rooted at the first element matching the given selector.\n   * @throws If no matching element is found for the given selector.\n   */\n  harnessLoaderFor(selector: string): Promise<HarnessLoader>;\n\n  /**\n   * Gets a `HarnessLoader` instance for an element under the root of this `LocatorFactory`\n   * @param selector The selector for the root element.\n   * @return A `HarnessLoader` rooted at the first element matching the given selector, or null if\n   *     no matching element is found.\n   */\n  harnessLoaderForOptional(selector: string): Promise<HarnessLoader | null>;\n\n  /**\n   * Gets a list of `HarnessLoader` instances, one for each matching element.\n   * @param selector The selector for the root element.\n   * @return A list of `HarnessLoader`, one rooted at each element matching the given selector.\n   */\n  harnessLoaderForAll(selector: string): Promise<HarnessLoader[]>;\n\n  /**\n   * Flushes change detection and async tasks captured in the Angular zone.\n   * In most cases it should not be necessary to call this manually. However, there may be some edge\n   * cases where it is needed to fully flush animation events.\n   */\n  forceStabilize(): Promise<void>;\n\n  /**\n   * Waits for all scheduled or running async tasks to complete. This allows harness\n   * authors to wait for async tasks outside of the Angular zone.\n   */\n  waitForTasksOutsideAngular(): Promise<void>;\n}\n\n/**\n * Base class for component harnesses that all component harness authors should extend. This base\n * component harness provides the basic ability to locate element and sub-component harness. It\n * should be inherited when defining user's own harness.\n */\nexport abstract class ComponentHarness {\n  constructor(protected readonly locatorFactory: LocatorFactory) {}\n\n  /** Gets a `Promise` for the `TestElement` representing the host element of the component. */\n  async host(): Promise<TestElement> {\n    return this.locatorFactory.rootElement;\n  }\n\n  /**\n   * Gets a `LocatorFactory` for the document root element. This factory can be used to create\n   * locators for elements that a component creates outside of its own root element. (e.g. by\n   * appending to document.body).\n   */\n  protected documentRootLocatorFactory(): LocatorFactory {\n    return this.locatorFactory.documentRootLocatorFactory();\n  }\n\n  /**\n   * Creates an asynchronous locator function that can be used to find a `ComponentHarness` instance\n   * or element under the host element of this `ComponentHarness`.\n   * @param queries A list of queries specifying which harnesses and elements to search for:\n   *   - A `string` searches for elements matching the CSS selector specified by the string.\n   *   - A `ComponentHarness` constructor searches for `ComponentHarness` instances matching the\n   *     given class.\n   *   - A `HarnessPredicate` searches for `ComponentHarness` instances matching the given\n   *     predicate.\n   * @return An asynchronous locator function that searches for and returns a `Promise` for the\n   *   first element or harness matching the given search criteria. Matches are ordered first by\n   *   order in the DOM, and second by order in the queries list. If no matches are found, the\n   *   `Promise` rejects. The type that the `Promise` resolves to is a union of all result types for\n   *   each query.\n   *\n   * e.g. Given the following DOM: `<div id=\"d1\" /><div id=\"d2\" />`, and assuming\n   * `DivHarness.hostSelector === 'div'`:\n   * - `await ch.locatorFor(DivHarness, 'div')()` gets a `DivHarness` instance for `#d1`\n   * - `await ch.locatorFor('div', DivHarness)()` gets a `TestElement` instance for `#d1`\n   * - `await ch.locatorFor('span')()` throws because the `Promise` rejects.\n   */\n  protected locatorFor<T extends (HarnessQuery<any> | string)[]>(...queries: T):\n      AsyncFactoryFn<LocatorFnResult<T>> {\n    return this.locatorFactory.locatorFor(...queries);\n  }\n\n  /**\n   * Creates an asynchronous locator function that can be used to find a `ComponentHarness` instance\n   * or element under the host element of this `ComponentHarness`.\n   * @param queries A list of queries specifying which harnesses and elements to search for:\n   *   - A `string` searches for elements matching the CSS selector specified by the string.\n   *   - A `ComponentHarness` constructor searches for `ComponentHarness` instances matching the\n   *     given class.\n   *   - A `HarnessPredicate` searches for `ComponentHarness` instances matching the given\n   *     predicate.\n   * @return An asynchronous locator function that searches for and returns a `Promise` for the\n   *   first element or harness matching the given search criteria. Matches are ordered first by\n   *   order in the DOM, and second by order in the queries list. If no matches are found, the\n   *   `Promise` is resolved with `null`. The type that the `Promise` resolves to is a union of all\n   *   result types for each query or null.\n   *\n   * e.g. Given the following DOM: `<div id=\"d1\" /><div id=\"d2\" />`, and assuming\n   * `DivHarness.hostSelector === 'div'`:\n   * - `await ch.locatorForOptional(DivHarness, 'div')()` gets a `DivHarness` instance for `#d1`\n   * - `await ch.locatorForOptional('div', DivHarness)()` gets a `TestElement` instance for `#d1`\n   * - `await ch.locatorForOptional('span')()` gets `null`.\n   */\n  protected locatorForOptional<T extends (HarnessQuery<any> | string)[]>(...queries: T):\n      AsyncFactoryFn<LocatorFnResult<T> | null> {\n    return this.locatorFactory.locatorForOptional(...queries);\n  }\n\n  /**\n   * Creates an asynchronous locator function that can be used to find `ComponentHarness` instances\n   * or elements under the host element of this `ComponentHarness`.\n   * @param queries A list of queries specifying which harnesses and elements to search for:\n   *   - A `string` searches for elements matching the CSS selector specified by the string.\n   *   - A `ComponentHarness` constructor searches for `ComponentHarness` instances matching the\n   *     given class.\n   *   - A `HarnessPredicate` searches for `ComponentHarness` instances matching the given\n   *     predicate.\n   * @return An asynchronous locator function that searches for and returns a `Promise` for all\n   *   elements and harnesses matching the given search criteria. Matches are ordered first by\n   *   order in the DOM, and second by order in the queries list. If an element matches more than\n   *   one `ComponentHarness` class, the locator gets an instance of each for the same element. If\n   *   an element matches multiple `string` selectors, only one `TestElement` instance is returned\n   *   for that element. The type that the `Promise` resolves to is an array where each element is\n   *   the union of all result types for each query.\n   *\n   * e.g. Given the following DOM: `<div id=\"d1\" /><div id=\"d2\" />`, and assuming\n   * `DivHarness.hostSelector === 'div'` and `IdIsD1Harness.hostSelector === '#d1'`:\n   * - `await ch.locatorForAll(DivHarness, 'div')()` gets `[\n   *     DivHarness, // for #d1\n   *     TestElement, // for #d1\n   *     DivHarness, // for #d2\n   *     TestElement // for #d2\n   *   ]`\n   * - `await ch.locatorForAll('div', '#d1')()` gets `[\n   *     TestElement, // for #d1\n   *     TestElement // for #d2\n   *   ]`\n   * - `await ch.locatorForAll(DivHarness, IdIsD1Harness)()` gets `[\n   *     DivHarness, // for #d1\n   *     IdIsD1Harness, // for #d1\n   *     DivHarness // for #d2\n   *   ]`\n   * - `await ch.locatorForAll('span')()` gets `[]`.\n   */\n  protected locatorForAll<T extends (HarnessQuery<any> | string)[]>(...queries: T):\n      AsyncFactoryFn<LocatorFnResult<T>[]> {\n    return this.locatorFactory.locatorForAll(...queries);\n  }\n\n  /**\n   * Flushes change detection and async tasks in the Angular zone.\n   * In most cases it should not be necessary to call this manually. However, there may be some edge\n   * cases where it is needed to fully flush animation events.\n   */\n  protected async forceStabilize() {\n    return this.locatorFactory.forceStabilize();\n  }\n\n  /**\n   * Waits for all scheduled or running async tasks to complete. This allows harness\n   * authors to wait for async tasks outside of the Angular zone.\n   */\n  protected async waitForTasksOutsideAngular() {\n    return this.locatorFactory.waitForTasksOutsideAngular();\n  }\n}\n\n\n/**\n * Base class for component harnesses that authors should extend if they anticipate that consumers\n * of the harness may want to access other harnesses within the `<ng-content>` of the component.\n */\nexport abstract class ContentContainerComponentHarness<S extends string = string>\n  extends ComponentHarness implements HarnessLoader {\n\n  async getChildLoader(selector: S): Promise<HarnessLoader> {\n    return (await this.getRootHarnessLoader()).getChildLoader(selector);\n  }\n\n  async getAllChildLoaders(selector: S): Promise<HarnessLoader[]> {\n    return (await this.getRootHarnessLoader()).getAllChildLoaders(selector);\n  }\n\n  async getHarness<T extends ComponentHarness>(query: HarnessQuery<T>): Promise<T> {\n    return (await this.getRootHarnessLoader()).getHarness(query);\n  }\n\n  async getAllHarnesses<T extends ComponentHarness>(query: HarnessQuery<T>): Promise<T[]> {\n    return (await this.getRootHarnessLoader()).getAllHarnesses(query);\n  }\n\n  /**\n   * Gets the root harness loader from which to start\n   * searching for content contained by this harness.\n   */\n  protected async getRootHarnessLoader(): Promise<HarnessLoader> {\n    return this.locatorFactory.rootHarnessLoader();\n  }\n}\n\n/** Constructor for a ComponentHarness subclass. */\nexport interface ComponentHarnessConstructor<T extends ComponentHarness> {\n  new(locatorFactory: LocatorFactory): T;\n\n  /**\n   * `ComponentHarness` subclasses must specify a static `hostSelector` property that is used to\n   * find the host element for the corresponding component. This property should match the selector\n   * for the Angular component.\n   */\n  hostSelector: string;\n}\n\n/** A set of criteria that can be used to filter a list of `ComponentHarness` instances. */\nexport interface BaseHarnessFilters {\n  /** Only find instances whose host element matches the given selector. */\n  selector?: string;\n  /** Only find instances that are nested under an element with the given selector. */\n  ancestor?: string;\n}\n\n/**\n * A class used to associate a ComponentHarness class with predicates functions that can be used to\n * filter instances of the class.\n */\nexport class HarnessPredicate<T extends ComponentHarness> {\n  private _predicates: AsyncPredicate<T>[] = [];\n  private _descriptions: string[] = [];\n  private _ancestor: string;\n\n  constructor(public harnessType: ComponentHarnessConstructor<T>, options: BaseHarnessFilters) {\n    this._addBaseOptions(options);\n  }\n\n  /**\n   * Checks if the specified nullable string value matches the given pattern.\n   * @param value The nullable string value to check, or a Promise resolving to the\n   *   nullable string value.\n   * @param pattern The pattern the value is expected to match. If `pattern` is a string,\n   *   `value` is expected to match exactly. If `pattern` is a regex, a partial match is\n   *   allowed. If `pattern` is `null`, the value is expected to be `null`.\n   * @return Whether the value matches the pattern.\n   */\n  static async stringMatches(value: string | null | Promise<string | null>,\n                             pattern: string | RegExp | null): Promise<boolean> {\n    value = await value;\n    if (pattern === null) {\n      return value === null;\n    } else if (value === null) {\n      return false;\n    }\n    return typeof pattern === 'string' ? value === pattern : pattern.test(value);\n  }\n\n  /**\n   * Adds a predicate function to be run against candidate harnesses.\n   * @param description A description of this predicate that may be used in error messages.\n   * @param predicate An async predicate function.\n   * @return this (for method chaining).\n   */\n  add(description: string, predicate: AsyncPredicate<T>) {\n    this._descriptions.push(description);\n    this._predicates.push(predicate);\n    return this;\n  }\n\n  /**\n   * Adds a predicate function that depends on an option value to be run against candidate\n   * harnesses. If the option value is undefined, the predicate will be ignored.\n   * @param name The name of the option (may be used in error messages).\n   * @param option The option value.\n   * @param predicate The predicate function to run if the option value is not undefined.\n   * @return this (for method chaining).\n   */\n  addOption<O>(name: string, option: O | undefined, predicate: AsyncOptionPredicate<T, O>) {\n    if (option !== undefined) {\n      this.add(`${name} = ${_valueAsString(option)}`, item => predicate(item, option));\n    }\n    return this;\n  }\n\n  /**\n   * Filters a list of harnesses on this predicate.\n   * @param harnesses The list of harnesses to filter.\n   * @return A list of harnesses that satisfy this predicate.\n   */\n  async filter(harnesses: T[]): Promise<T[]> {\n    if (harnesses.length === 0) {\n      return [];\n    }\n    const results = await parallel(() => harnesses.map(h => this.evaluate(h)));\n    return harnesses.filter((_, i) => results[i]);\n  }\n\n  /**\n   * Evaluates whether the given harness satisfies this predicate.\n   * @param harness The harness to check\n   * @return A promise that resolves to true if the harness satisfies this predicate,\n   *   and resolves to false otherwise.\n   */\n  async evaluate(harness: T): Promise<boolean> {\n    const results = await parallel(() => this._predicates.map(p => p(harness)));\n    return results.reduce((combined, current) => combined && current, true);\n  }\n\n  /** Gets a description of this predicate for use in error messages. */\n  getDescription() {\n    return this._descriptions.join(', ');\n  }\n\n  /** Gets the selector used to find candidate elements. */\n  getSelector() {\n    // We don't have to go through the extra trouble if there are no ancestors.\n    if (!this._ancestor) {\n      return (this.harnessType.hostSelector || '').trim();\n    }\n\n    const [ancestors, ancestorPlaceholders] = _splitAndEscapeSelector(this._ancestor);\n    const [selectors, selectorPlaceholders] =\n      _splitAndEscapeSelector(this.harnessType.hostSelector || '');\n    const result: string[] = [];\n\n    // We have to add the ancestor to each part of the host compound selector, otherwise we can get\n    // incorrect results. E.g. `.ancestor .a, .ancestor .b` vs `.ancestor .a, .b`.\n    ancestors.forEach(escapedAncestor => {\n      const ancestor = _restoreSelector(escapedAncestor, ancestorPlaceholders);\n      return selectors.forEach(escapedSelector =>\n        result.push(`${ancestor} ${_restoreSelector(escapedSelector, selectorPlaceholders)}`));\n    });\n\n    return result.join(', ');\n  }\n\n  /** Adds base options common to all harness types. */\n  private _addBaseOptions(options: BaseHarnessFilters) {\n    this._ancestor = options.ancestor || '';\n    if (this._ancestor) {\n      this._descriptions.push(`has ancestor matching selector \"${this._ancestor}\"`);\n    }\n    const selector = options.selector;\n    if (selector !== undefined) {\n      this.add(`host matches selector \"${selector}\"`, async item => {\n        return (await item.host()).matchesSelector(selector);\n      });\n    }\n  }\n}\n\n/** Represent a value as a string for the purpose of logging. */\nfunction _valueAsString(value: unknown) {\n  if (value === undefined) {\n    return 'undefined';\n  }\n  // `JSON.stringify` doesn't handle RegExp properly, so we need a custom replacer.\n  try {\n    return JSON.stringify(value, (_, v) => {\n      if (v instanceof RegExp) {\n        return `/${v.toString()}/`;\n      }\n\n      return typeof v === 'string' ? v.replace('/\\//g', '\\\\/') : v;\n    }).replace(/\"\\/\\//g, '\\\\/').replace(/\\/\\/\"/g, '\\\\/').replace(/\\\\\\//g, '/');\n  } catch {\n    // `JSON.stringify` will throw if the object is cyclical,\n    // in this case the best we can do is report the value as `{...}`.\n    return '{...}';\n  }\n}\n\n/**\n * Splits up a compound selector into its parts and escapes any quoted content. The quoted content\n * has to be escaped, because it can contain commas which will throw throw us off when trying to\n * split it.\n * @param selector Selector to be split.\n * @returns The escaped string where any quoted content is replaced with a placeholder. E.g.\n * `[foo=\"bar\"]` turns into `[foo=__cdkPlaceholder-0__]`. Use `_restoreSelector` to restore\n * the placeholders.\n */\nfunction _splitAndEscapeSelector(selector: string): [parts: string[], placeholders: string[]] {\n  const placeholders: string[] = [];\n\n  // Note that the regex doesn't account for nested quotes so something like `\"ab'cd'e\"` will be\n  // considered as two blocks. It's a bit of an edge case, but if we find that it's a problem,\n  // we can make it a bit smarter using a loop. Use this for now since it's more readable and\n  // compact. More complete implementation:\n  // https://github.com/angular/angular/blob/bd34bc9e89f18a/packages/compiler/src/shadow_css.ts#L655\n  const result = selector.replace(/([\"'][^[\"']*[\"'])/g, (_, keep) => {\n    const replaceBy = `__cdkPlaceholder-${placeholders.length}__`;\n    placeholders.push(keep);\n    return replaceBy;\n  });\n\n  return [result.split(',').map(part => part.trim()), placeholders];\n}\n\n/** Restores a selector whose content was escaped in `_splitAndEscapeSelector`. */\nfunction _restoreSelector(selector: string, placeholders: string[]): string {\n  return selector.replace(/__cdkPlaceholder-(\\d+)__/g, (_, index) => placeholders[+index]);\n}\n"]}