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<div class="docs-api">
<h2>
API reference for Angular Material core-testing
</h2><div class="docs-api-module">
<p class="docs-api-module-import">
<code>
import {MatOptionHarness} from '@angular/material/core/testing';
</code>
</p>
<div class="docs-api-module-import-button" data-docs-api-module-import-button="import {MatOptionHarness} from '@angular/material/core/testing';"></div>
</div>
<h3 id="material-core-testing-classes" class="docs-header-link docs-api-h3">
<span header-link="classes"></span>
Classes
</h3>
<h4 id="MatOptionHarness" class="docs-header-link docs-api-h4 docs-api-class-name">
<span header-link="MatOptionHarness"></span>
<code>MatOptionHarness</code>
<span class="docs-api-class-extends-clauses">
<span class="docs-api-class-extends-label">extends</span>
<a href="cdk/testing/api#ContentContainerComponentHarness" class="docs-api-class-extends-type">
ContentContainerComponentHarness
</a>
</span>
</h4><p class="docs-api-class-description"><p>Harness for interacting with a <code>mat-option</code> in tests.</p>
</p><h5 class="docs-api-h5 docs-api-method-header">Properties</h5>
<div class="docs-api-properties-card">
<table class="docs-api-properties-table">
<tr class="docs-api-properties-header-row">
<th class="docs-api-properties-th">Name</th>
<th class="docs-api-properties-th">Description</th>
</tr>
<tr class="docs-api-properties-row">
<td class="docs-api-properties-name-cell"><p class="docs-api-property-name">
<code>static hostSelector: <code class="docs-api-property-type">'.mat-mdc-option'</code></code>
</p>
</td>
<td class="docs-api-property-description"><p>Selector used to locate option instances.</p>
</td>
</tr>
</table>
</div>
<h5 class="docs-api-h5 docs-api-method-header">Methods</h5>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>click
(): <code class="docs-api-method-returns-type">Promise<void></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Clicks the option.</p>
</td>
</tr><thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<void></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
<p>Promise that resolves when the action completes.</p>
</p>
</td>
</tr></table>
</div>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>countHarnesses
(<span class="docs-api-method-parameter-name">query:
</span>
<code class="docs-api-method-parameter-type">HarnessQuery<T></code>): <code class="docs-api-method-returns-type">Promise<number></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Returns the number of matching harnesses for the given query within the current harness's
content.</p>
</td>
</tr><thead>
<tr class="docs-api-method-parameters-header-row">
<th colspan="2" class="docs-api-method-parameters-header-cell">Parameters</th>
</tr>
</thead>
<tr class="docs-api-method-parameter-row">
<td class="docs-api-method-parameter-cell">
<p class="docs-api-method-parameter-name">
query</p>
<code class="docs-api-method-parameter-type">HarnessQuery<T></code>
</td>
<td class="docs-api-method-parameter-description-cell">
<p class="docs-api-method-parameter-description">
<p>The harness query to search for.</p>
</p>
</td>
</tr>
<thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<number></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
<p>The number of matching harnesses for the given query.</p>
</p>
</td>
</tr></table>
</div>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>getAllChildLoaders
(<span class="docs-api-method-parameter-name">selector:
</span>
<code class="docs-api-method-parameter-type">S</code>): <code class="docs-api-method-returns-type">Promise<HarnessLoader[]></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Gets a list of <code>HarnessLoader</code> for each element matching the given selector under the current
harness's cotnent that searches for harnesses under that element.</p>
</td>
</tr><thead>
<tr class="docs-api-method-parameters-header-row">
<th colspan="2" class="docs-api-method-parameters-header-cell">Parameters</th>
</tr>
</thead>
<tr class="docs-api-method-parameter-row">
<td class="docs-api-method-parameter-cell">
<p class="docs-api-method-parameter-name">
selector</p>
<code class="docs-api-method-parameter-type">S</code>
</td>
<td class="docs-api-method-parameter-description-cell">
<p class="docs-api-method-parameter-description">
<p>The selector for elements in the component's content.</p>
</p>
</td>
</tr>
<thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<HarnessLoader[]></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
<p>A list of <code>HarnessLoader</code> for each element matching the given selector.</p>
</p>
</td>
</tr></table>
</div>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>getAllHarnesses
(<span class="docs-api-method-parameter-name">query:
</span>
<code class="docs-api-method-parameter-type">HarnessQuery<T></code>): <code class="docs-api-method-returns-type">Promise<T[]></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Gets all matching harnesses for the given query within the current harness's content.</p>
</td>
</tr><thead>
<tr class="docs-api-method-parameters-header-row">
<th colspan="2" class="docs-api-method-parameters-header-cell">Parameters</th>
</tr>
</thead>
<tr class="docs-api-method-parameter-row">
<td class="docs-api-method-parameter-cell">
<p class="docs-api-method-parameter-name">
query</p>
<code class="docs-api-method-parameter-type">HarnessQuery<T></code>
</td>
<td class="docs-api-method-parameter-description-cell">
<p class="docs-api-method-parameter-description">
<p>The harness query to search for.</p>
</p>
</td>
</tr>
<thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<T[]></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
<p>The list of harness matching the given query.</p>
</p>
</td>
</tr></table>
</div>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>getChildLoader
(<span class="docs-api-method-parameter-name">selector:
</span>
<code class="docs-api-method-parameter-type">S</code>): <code class="docs-api-method-returns-type">Promise<HarnessLoader></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Gets a <code>HarnessLoader</code> that searches for harnesses under the first element matching the given
selector within the current harness's content.</p>
</td>
</tr><thead>
<tr class="docs-api-method-parameters-header-row">
<th colspan="2" class="docs-api-method-parameters-header-cell">Parameters</th>
</tr>
</thead>
<tr class="docs-api-method-parameter-row">
<td class="docs-api-method-parameter-cell">
<p class="docs-api-method-parameter-name">
selector</p>
<code class="docs-api-method-parameter-type">S</code>
</td>
<td class="docs-api-method-parameter-description-cell">
<p class="docs-api-method-parameter-description">
<p>The selector for an element in the component's content.</p>
</p>
</td>
</tr>
<thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<HarnessLoader></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
<p>A <code>HarnessLoader</code> that searches for harnesses under the given selector.</p>
</p>
</td>
</tr></table>
</div>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>getHarness
(<span class="docs-api-method-parameter-name">query:
</span>
<code class="docs-api-method-parameter-type">HarnessQuery<T></code>): <code class="docs-api-method-returns-type">Promise<T></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Gets the first matching harness for the given query within the current harness's content.</p>
</td>
</tr><thead>
<tr class="docs-api-method-parameters-header-row">
<th colspan="2" class="docs-api-method-parameters-header-cell">Parameters</th>
</tr>
</thead>
<tr class="docs-api-method-parameter-row">
<td class="docs-api-method-parameter-cell">
<p class="docs-api-method-parameter-name">
query</p>
<code class="docs-api-method-parameter-type">HarnessQuery<T></code>
</td>
<td class="docs-api-method-parameter-description-cell">
<p class="docs-api-method-parameter-description">
<p>The harness query to search for.</p>
</p>
</td>
</tr>
<thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<T></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
<p>The first harness matching the given query.</p>
</p>
</td>
</tr></table>
</div>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>getHarnessAtIndex
(<span class="docs-api-method-parameter-name">query:
</span>
<code class="docs-api-method-parameter-type">HarnessQuery<T></code>, <span class="docs-api-method-parameter-name">index:
</span>
<code class="docs-api-method-parameter-type">number</code>): <code class="docs-api-method-returns-type">Promise<T></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Gets a matching harness for the given query and index within the current harness's content.</p>
</td>
</tr><thead>
<tr class="docs-api-method-parameters-header-row">
<th colspan="2" class="docs-api-method-parameters-header-cell">Parameters</th>
</tr>
</thead>
<tr class="docs-api-method-parameter-row">
<td class="docs-api-method-parameter-cell">
<p class="docs-api-method-parameter-name">
query</p>
<code class="docs-api-method-parameter-type">HarnessQuery<T></code>
</td>
<td class="docs-api-method-parameter-description-cell">
<p class="docs-api-method-parameter-description">
<p>The harness query to search for.</p>
</p>
</td>
</tr>
<tr class="docs-api-method-parameter-row">
<td class="docs-api-method-parameter-cell">
<p class="docs-api-method-parameter-name">
index</p>
<code class="docs-api-method-parameter-type">number</code>
</td>
<td class="docs-api-method-parameter-description-cell">
<p class="docs-api-method-parameter-description">
<p>The zero-indexed offset of the component to find.</p>
</p>
</td>
</tr>
<thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<T></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
<p>The first harness matching the given query.</p>
</p>
</td>
</tr></table>
</div>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>getHarnessOrNull
(<span class="docs-api-method-parameter-name">query:
</span>
<code class="docs-api-method-parameter-type">HarnessQuery<T></code>): <code class="docs-api-method-returns-type">Promise<T | null></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Gets the first matching harness for the given query within the current harness's content.</p>
</td>
</tr><thead>
<tr class="docs-api-method-parameters-header-row">
<th colspan="2" class="docs-api-method-parameters-header-cell">Parameters</th>
</tr>
</thead>
<tr class="docs-api-method-parameter-row">
<td class="docs-api-method-parameter-cell">
<p class="docs-api-method-parameter-name">
query</p>
<code class="docs-api-method-parameter-type">HarnessQuery<T></code>
</td>
<td class="docs-api-method-parameter-description-cell">
<p class="docs-api-method-parameter-description">
<p>The harness query to search for.</p>
</p>
</td>
</tr>
<thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<T | null></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
<p>The first harness matching the given query, or null if none is found.</p>
</p>
</td>
</tr></table>
</div>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>getText
(): <code class="docs-api-method-returns-type">Promise<string></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Gets the option's label text.</p>
</td>
</tr><thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<string></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
</p>
</td>
</tr></table>
</div>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>hasHarness
(<span class="docs-api-method-parameter-name">query:
</span>
<code class="docs-api-method-parameter-type">HarnessQuery<T></code>): <code class="docs-api-method-returns-type">Promise<boolean></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Checks whether there is a matching harnesses for the given query within the current harness's
content.</p>
</td>
</tr><thead>
<tr class="docs-api-method-parameters-header-row">
<th colspan="2" class="docs-api-method-parameters-header-cell">Parameters</th>
</tr>
</thead>
<tr class="docs-api-method-parameter-row">
<td class="docs-api-method-parameter-cell">
<p class="docs-api-method-parameter-name">
query</p>
<code class="docs-api-method-parameter-type">HarnessQuery<T></code>
</td>
<td class="docs-api-method-parameter-description-cell">
<p class="docs-api-method-parameter-description">
<p>The harness query to search for.</p>
</p>
</td>
</tr>
<thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<boolean></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
<p>Whether there is matching harnesses for the given query.</p>
</p>
</td>
</tr></table>
</div>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>host
(): <code class="docs-api-method-returns-type">Promise<TestElement></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Gets a <code>Promise</code> for the <code>TestElement</code> representing the host element of the component.</p>
</td>
</tr><thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<TestElement></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
</p>
</td>
</tr></table>
</div>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>isActive
(): <code class="docs-api-method-returns-type">Promise<boolean></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Gets whether the option is active.</p>
</td>
</tr><thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<boolean></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
</p>
</td>
</tr></table>
</div>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>isDisabled
(): <code class="docs-api-method-returns-type">Promise<boolean></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Gets whether the option is disabled.</p>
</td>
</tr><thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<boolean></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
</p>
</td>
</tr></table>
</div>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>isMultiple
(): <code class="docs-api-method-returns-type">Promise<boolean></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Gets whether the option is in multiple selection mode.</p>
</td>
</tr><thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<boolean></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
</p>
</td>
</tr></table>
</div>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>isSelected
(): <code class="docs-api-method-returns-type">Promise<boolean></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Gets whether the option is selected.</p>
</td>
</tr><thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<boolean></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
</p>
</td>
</tr></table>
</div>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
static
</div>with
(<span class="docs-api-method-parameter-name">options:
</span>
<code class="docs-api-method-parameter-type">OptionHarnessFilters = {}</code>): <code class="docs-api-method-returns-type">HarnessPredicate<T></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Gets a <code>HarnessPredicate</code> that can be used to search for an option with specific attributes.</p>
</td>
</tr><thead>
<tr class="docs-api-method-parameters-header-row">
<th colspan="2" class="docs-api-method-parameters-header-cell">Parameters</th>
</tr>
</thead>
<tr class="docs-api-method-parameter-row">
<td class="docs-api-method-parameter-cell">
<p class="docs-api-method-parameter-name">
options</p>
<code class="docs-api-method-parameter-type">OptionHarnessFilters = {}</code>
</td>
<td class="docs-api-method-parameter-description-cell">
<p class="docs-api-method-parameter-description">
<p>Options for filtering which option instances are considered a match.</p>
</p>
</td>
</tr>
<thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">HarnessPredicate<T></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
<p>a <code>HarnessPredicate</code> configured with the given options.</p>
</p>
</td>
</tr></table>
</div>
<h4 id="MatOptgroupHarness" class="docs-header-link docs-api-h4 docs-api-class-name">
<span header-link="MatOptgroupHarness"></span>
<code>MatOptgroupHarness</code>
<span class="docs-api-class-extends-clauses">
<span class="docs-api-class-extends-label">extends</span>
<a href="cdk/testing/api#ComponentHarness" class="docs-api-class-extends-type">
ComponentHarness
</a>
</span>
</h4><p class="docs-api-class-description"><p>Harness for interacting with a <code>mat-optgroup</code> in tests.</p>
</p><h5 class="docs-api-h5 docs-api-method-header">Properties</h5>
<div class="docs-api-properties-card">
<table class="docs-api-properties-table">
<tr class="docs-api-properties-header-row">
<th class="docs-api-properties-th">Name</th>
<th class="docs-api-properties-th">Description</th>
</tr>
<tr class="docs-api-properties-row">
<td class="docs-api-properties-name-cell"><p class="docs-api-property-name">
<code>static hostSelector: <code class="docs-api-property-type">'.mat-mdc-optgroup'</code></code>
</p>
</td>
<td class="docs-api-property-description"><p>Selector used to locate option group instances.</p>
</td>
</tr>
</table>
</div>
<h5 class="docs-api-h5 docs-api-method-header">Methods</h5>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>getLabelText
(): <code class="docs-api-method-returns-type">Promise<string></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Gets the option group's label text.</p>
</td>
</tr><thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<string></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">
</p>
</td>
</tr></table>
</div>
<div class="docs-api-method-card">
<table class="docs-api-method-table">
<thead>
<tr class="docs-api-method-name-row">
<th colspan="2" class="docs-api-method-name-cell"><div class="docs-api-modifier-method-marker">
async
</div>getOptions
(<span class="docs-api-method-parameter-name">filter:
</span>
<code class="docs-api-method-parameter-type">OptionHarnessFilters = {}</code>): <code class="docs-api-method-returns-type">Promise<MatOptionHarness[]></code>
</th>
</tr>
</thead><tr class="docs-api-method-description-row">
<td colspan="2" class="docs-api-method-description-cell">
<p>Gets the options that are inside the group.</p>
</td>
</tr><thead>
<tr class="docs-api-method-parameters-header-row">
<th colspan="2" class="docs-api-method-parameters-header-cell">Parameters</th>
</tr>
</thead>
<tr class="docs-api-method-parameter-row">
<td class="docs-api-method-parameter-cell">
<p class="docs-api-method-parameter-name">
filter</p>
<code class="docs-api-method-parameter-type">OptionHarnessFilters = {}</code>
</td>
<td class="docs-api-method-parameter-description-cell">
<p class="docs-api-method-parameter-description">
<p>Optionally filters which options are included.</p>
</p>
</td>
</tr>
<thead>
<tr class="docs-api-method-returns-header-row">
<th colspan="2" class="docs-api-method-returns-header-cell">Returns</th>
</tr>
</thead>
<tr>
<td class="docs-api-method-returns-type-cell">
<code class="docs-api-method-returns-type">Promise<MatOptionHarness[]></code>
</td>
<td class="docs-api-method-returns-description-cell">
<p class="docs-api-method-returns-description">