@angular/material/esm2020/slider/testing/slider-harness.mjs

Angular Material

/**
 * @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 { ComponentHarness, HarnessPredicate, } from '@angular/cdk/testing';
import { coerceNumberProperty } from '@angular/cdk/coercion';
import { MatSliderThumbHarness } from './slider-thumb-harness';
/** Harness for interacting with a MDC mat-slider in tests. */
export class MatSliderHarness extends ComponentHarness {
    /**
     * Gets a `HarnessPredicate` that can be used to search for a slider with specific attributes.
     * @param options Options for filtering which input instances are considered a match.
     * @return a `HarnessPredicate` configured with the given options.
     */
    static with(options = {}) {
        return new HarnessPredicate(this, options)
            .addOption('isRange', options.isRange, async (harness, value) => {
            return (await harness.isRange()) === value;
        })
            .addOption('disabled', options.disabled, async (harness, disabled) => {
            return (await harness.isDisabled()) === disabled;
        });
    }
    /** Gets the start thumb of the slider (only applicable for range sliders). */
    async getStartThumb() {
        if (!(await this.isRange())) {
            throw Error('`getStartThumb` is only applicable for range sliders. ' +
                'Did you mean to use `getEndThumb`?');
        }
        return this.locatorFor(MatSliderThumbHarness.with({ position: 0 /* ThumbPosition.START */ }))();
    }
    /** Gets the thumb (for single point sliders), or the end thumb (for range sliders). */
    async getEndThumb() {
        return this.locatorFor(MatSliderThumbHarness.with({ position: 1 /* ThumbPosition.END */ }))();
    }
    /** Gets whether the slider is a range slider. */
    async isRange() {
        return await (await this.host()).hasClass('mdc-slider--range');
    }
    /** Gets whether the slider is disabled. */
    async isDisabled() {
        return await (await this.host()).hasClass('mdc-slider--disabled');
    }
    /** Gets the value step increments of the slider. */
    async getStep() {
        // The same step value is forwarded to both thumbs.
        const startHost = await (await this.getEndThumb()).host();
        return coerceNumberProperty(await startHost.getProperty('step'));
    }
    /** Gets the maximum value of the slider. */
    async getMaxValue() {
        return (await this.getEndThumb()).getMaxValue();
    }
    /** Gets the minimum value of the slider. */
    async getMinValue() {
        const startThumb = (await this.isRange())
            ? await this.getStartThumb()
            : await this.getEndThumb();
        return startThumb.getMinValue();
    }
}
MatSliderHarness.hostSelector = '.mat-mdc-slider';
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