diff --git a/src/material-experimental/mdc-checkbox/testing/checkbox-harness.ts b/src/material-experimental/mdc-checkbox/testing/checkbox-harness.ts
index a3a6c76d0752..0818ee18ce20 100644
--- a/src/material-experimental/mdc-checkbox/testing/checkbox-harness.ts
+++ b/src/material-experimental/mdc-checkbox/testing/checkbox-harness.ts
@@ -12,7 +12,7 @@ import {CheckboxHarnessFilters} from '@angular/material/checkbox/testing';
 
 /** Harness for interacting with a MDC-based mat-checkbox in tests. */
 export class MatCheckboxHarness extends ComponentHarness {
-  static hostSelector = 'mat-checkbox';
+  static hostSelector = '.mat-mdc-checkbox';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a checkbox with specific attributes.
diff --git a/src/material-experimental/mdc-chips/chip-option.ts b/src/material-experimental/mdc-chips/chip-option.ts
index 311cfa16d688..52d89cd84d46 100644
--- a/src/material-experimental/mdc-chips/chip-option.ts
+++ b/src/material-experimental/mdc-chips/chip-option.ts
@@ -44,7 +44,7 @@ export class MatChipSelectionChange {
   inputs: ['color', 'disableRipple', 'tabIndex'],
   host: {
     'role': 'option',
-    'class': 'mat-mdc-focus-indicator',
+    'class': 'mat-mdc-focus-indicator mat-mdc-chip-option',
     '[class.mat-mdc-chip-disabled]': 'disabled',
     '[class.mat-mdc-chip-highlighted]': 'highlighted',
     '[class.mat-mdc-chip-with-avatar]': 'leadingIcon',
diff --git a/src/material-experimental/mdc-chips/chip-row.ts b/src/material-experimental/mdc-chips/chip-row.ts
index 98eb323d95bf..393fec71341d 100644
--- a/src/material-experimental/mdc-chips/chip-row.ts
+++ b/src/material-experimental/mdc-chips/chip-row.ts
@@ -50,6 +50,7 @@ export interface MatChipEditedEvent extends MatChipEvent {
   inputs: ['color', 'disableRipple', 'tabIndex'],
   host: {
     'role': 'row',
+    'class': 'mat-mdc-chip-row',
     '[class.mat-mdc-chip-disabled]': 'disabled',
     '[class.mat-mdc-chip-highlighted]': 'highlighted',
     '[class.mat-mdc-chip-with-avatar]': 'leadingIcon',
diff --git a/src/material-experimental/mdc-chips/testing/chip-grid-harness.ts b/src/material-experimental/mdc-chips/testing/chip-grid-harness.ts
index a26b162dc00c..78a6fe8c4f51 100644
--- a/src/material-experimental/mdc-chips/testing/chip-grid-harness.ts
+++ b/src/material-experimental/mdc-chips/testing/chip-grid-harness.ts
@@ -13,7 +13,7 @@ import {MatChipRowHarness} from './chip-row-harness';
 
 /** Harness for interacting with a mat-chip-grid in tests. */
 export class MatChipGridHarness extends ComponentHarness {
-  static hostSelector = 'mat-chip-grid';
+  static hostSelector = '.mat-mdc-chip-grid';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a chip grid with specific attributes.
diff --git a/src/material-experimental/mdc-chips/testing/chip-harness.ts b/src/material-experimental/mdc-chips/testing/chip-harness.ts
index 53619a9f6911..d714421562bb 100644
--- a/src/material-experimental/mdc-chips/testing/chip-harness.ts
+++ b/src/material-experimental/mdc-chips/testing/chip-harness.ts
@@ -11,7 +11,7 @@ import {ChipHarnessFilters} from './chip-harness-filters';
 
 /** Harness for interacting with a mat-chip in tests. */
 export class MatChipHarness extends ComponentHarness {
-  static hostSelector = 'mat-basic-chip, mat-chip';
+  static hostSelector = '.mat-mdc-basic-chip, .mat-mdc-chip';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a chip with specific attributes.
diff --git a/src/material-experimental/mdc-chips/testing/chip-listbox-harness.ts b/src/material-experimental/mdc-chips/testing/chip-listbox-harness.ts
index d6ae6e56bcd5..05d0fca8c047 100644
--- a/src/material-experimental/mdc-chips/testing/chip-listbox-harness.ts
+++ b/src/material-experimental/mdc-chips/testing/chip-listbox-harness.ts
@@ -12,7 +12,7 @@ import {MatChipOptionHarness} from './chip-option-harness';
 
 /** Harness for interacting with a mat-chip-listbox in tests. */
 export class MatChipListboxHarness extends ComponentHarness {
-  static hostSelector = 'mat-chip-listbox';
+  static hostSelector = '.mat-mdc-chip-listbox';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a chip listbox with specific
diff --git a/src/material-experimental/mdc-chips/testing/chip-option-harness.ts b/src/material-experimental/mdc-chips/testing/chip-option-harness.ts
index aa8ef1590837..7995e347abb8 100644
--- a/src/material-experimental/mdc-chips/testing/chip-option-harness.ts
+++ b/src/material-experimental/mdc-chips/testing/chip-option-harness.ts
@@ -12,7 +12,7 @@ import {ChipOptionHarnessFilters} from './chip-harness-filters';
 
 /** Harness for interacting with a mat-chip-option in tests. */
 export class MatChipOptionHarness extends MatChipHarness {
-  static hostSelector = 'mat-basic-chip-option, mat-chip-option';
+  static hostSelector = '.mat-mdc-chip-option';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a chip option with specific
diff --git a/src/material-experimental/mdc-chips/testing/chip-row-harness.ts b/src/material-experimental/mdc-chips/testing/chip-row-harness.ts
index b1b0fc0d7ea3..4f4d672a6062 100644
--- a/src/material-experimental/mdc-chips/testing/chip-row-harness.ts
+++ b/src/material-experimental/mdc-chips/testing/chip-row-harness.ts
@@ -12,7 +12,7 @@ import {MatChipHarness} from './chip-harness';
 
 /** Harness for interacting with a mat-chip-row in tests. */
 export class MatChipRowHarness extends MatChipHarness {
-  static hostSelector = 'mat-chip-row, mat-basic-chip-row';
+  static hostSelector = '.mat-mdc-chip-row';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a chip row with specific attributes.
diff --git a/src/material-experimental/mdc-chips/testing/chip-set-harness.ts b/src/material-experimental/mdc-chips/testing/chip-set-harness.ts
index 2f2dc41d5c91..5fd7cef9717d 100644
--- a/src/material-experimental/mdc-chips/testing/chip-set-harness.ts
+++ b/src/material-experimental/mdc-chips/testing/chip-set-harness.ts
@@ -12,7 +12,7 @@ import {ChipSetHarnessFilters} from './chip-harness-filters';
 
 /** Harness for interacting with a mat-chip-set in tests. */
 export class MatChipSetHarness extends ComponentHarness {
-  static hostSelector = 'mat-chip-set';
+  static hostSelector = '.mat-mdc-chip-set';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a chip set with specific attributes.
diff --git a/src/material-experimental/mdc-progress-bar/testing/progress-bar-harness.ts b/src/material-experimental/mdc-progress-bar/testing/progress-bar-harness.ts
index 34e8c3403998..fd8e1e387a89 100644
--- a/src/material-experimental/mdc-progress-bar/testing/progress-bar-harness.ts
+++ b/src/material-experimental/mdc-progress-bar/testing/progress-bar-harness.ts
@@ -12,7 +12,7 @@ import {ProgressBarHarnessFilters} from '@angular/material/progress-bar/testing'
 
 /** Harness for interacting with an MDC-based `mat-progress-bar` in tests. */
 export class MatProgressBarHarness extends ComponentHarness {
-  static hostSelector = 'mat-progress-bar';
+  static hostSelector = '.mat-mdc-progress-bar';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a progress bar with specific
diff --git a/src/material-experimental/mdc-progress-spinner/testing/progress-spinner-harness.ts b/src/material-experimental/mdc-progress-spinner/testing/progress-spinner-harness.ts
index 1ab7e56ad0fb..4735a95618f0 100644
--- a/src/material-experimental/mdc-progress-spinner/testing/progress-spinner-harness.ts
+++ b/src/material-experimental/mdc-progress-spinner/testing/progress-spinner-harness.ts
@@ -14,7 +14,7 @@ import {ProgressSpinnerHarnessFilters} from '@angular/material/progress-spinner/
 /** Harness for interacting with a MDC based mat-progress-spinner in tests. */
 export class MatProgressSpinnerHarness extends ComponentHarness {
   /** The selector for the host element of a `MatProgressSpinner` instance. */
-  static hostSelector = 'mat-progress-spinner,mat-spinner';
+  static hostSelector = '.mat-mdc-progress-spinner';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a `MatProgressSpinnerHarness` that
diff --git a/src/material-experimental/mdc-slide-toggle/testing/slide-toggle-harness.ts b/src/material-experimental/mdc-slide-toggle/testing/slide-toggle-harness.ts
index 4b1de596603b..0f5ac1280ed9 100644
--- a/src/material-experimental/mdc-slide-toggle/testing/slide-toggle-harness.ts
+++ b/src/material-experimental/mdc-slide-toggle/testing/slide-toggle-harness.ts
@@ -13,7 +13,7 @@ import {SlideToggleHarnessFilters} from '@angular/material/slide-toggle/testing'
 
 /** Harness for interacting with a MDC-based mat-slide-toggle in tests. */
 export class MatSlideToggleHarness extends ComponentHarness {
-  static hostSelector = 'mat-slide-toggle';
+  static hostSelector = '.mat-mdc-slide-toggle';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a slide-toggle w/ specific attributes.
diff --git a/src/material-experimental/mdc-slider/testing/slider-harness.ts b/src/material-experimental/mdc-slider/testing/slider-harness.ts
index 8a422783815b..eacfcb14d5b1 100644
--- a/src/material-experimental/mdc-slider/testing/slider-harness.ts
+++ b/src/material-experimental/mdc-slider/testing/slider-harness.ts
@@ -12,7 +12,7 @@ import {SliderHarnessFilters} from '@angular/material/slider/testing';
 
 /** Harness for interacting with a MDC mat-slider in tests. */
 export class MatSliderHarness extends ComponentHarness {
-  static hostSelector = 'mat-slider';
+  static hostSelector = '.mat-mdc-slider';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a mat-slider with
diff --git a/src/material/button-toggle/testing/button-toggle-group-harness.ts b/src/material/button-toggle/testing/button-toggle-group-harness.ts
index d15fe19fd374..2b2c4b3fd0c0 100644
--- a/src/material/button-toggle/testing/button-toggle-group-harness.ts
+++ b/src/material/button-toggle/testing/button-toggle-group-harness.ts
@@ -16,7 +16,7 @@ import {MatButtonToggleHarness} from './button-toggle-harness';
 /** Harness for interacting with a standard mat-button-toggle in tests. */
 export class MatButtonToggleGroupHarness extends ComponentHarness {
   /** The selector for the host element of a `MatButton` instance. */
-  static hostSelector = 'mat-button-toggle-group';
+  static hostSelector = '.mat-button-toggle-group';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a `MatButtonToggleGroupHarness`
diff --git a/src/material/button-toggle/testing/button-toggle-harness.ts b/src/material/button-toggle/testing/button-toggle-harness.ts
index 3fedf15659f9..3465fd9f6f2d 100644
--- a/src/material/button-toggle/testing/button-toggle-harness.ts
+++ b/src/material/button-toggle/testing/button-toggle-harness.ts
@@ -15,7 +15,7 @@ import {ButtonToggleHarnessFilters} from './button-toggle-harness-filters';
 /** Harness for interacting with a standard mat-button-toggle in tests. */
 export class MatButtonToggleHarness extends ComponentHarness {
   /** The selector for the host element of a `MatButton` instance. */
-  static hostSelector = 'mat-button-toggle';
+  static hostSelector = '.mat-button-toggle';
 
   private _label = this.locatorFor('.mat-button-toggle-label-content');
   private _button = this.locatorFor('.mat-button-toggle-button');
diff --git a/src/material/card/testing/card-harness.ts b/src/material/card/testing/card-harness.ts
index 839248d9eeeb..f4a13221e2bc 100644
--- a/src/material/card/testing/card-harness.ts
+++ b/src/material/card/testing/card-harness.ts
@@ -20,7 +20,7 @@ export const enum MatCardSection {
 /** Harness for interacting with a standard mat-card in tests. */
 export class MatCardHarness extends ContentContainerComponentHarness<MatCardSection> {
   /** The selector for the host element of a `MatCard` instance. */
-  static hostSelector = 'mat-card';
+  static hostSelector = '.mat-card';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a `MatCardHarness` that meets
diff --git a/src/material/checkbox/testing/checkbox-harness.ts b/src/material/checkbox/testing/checkbox-harness.ts
index 00ad3de9cc59..6cec41f15bdf 100644
--- a/src/material/checkbox/testing/checkbox-harness.ts
+++ b/src/material/checkbox/testing/checkbox-harness.ts
@@ -13,7 +13,7 @@ import {CheckboxHarnessFilters} from './checkbox-harness-filters';
 /** Harness for interacting with a standard mat-checkbox in tests. */
 export class MatCheckboxHarness extends ComponentHarness {
   /** The selector for the host element of a `MatCheckbox` instance. */
-  static hostSelector = 'mat-checkbox';
+  static hostSelector = '.mat-checkbox';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a `MatCheckboxHarness` that meets
diff --git a/src/material/divider/testing/divider-harness.ts b/src/material/divider/testing/divider-harness.ts
index 3099d79b5156..14497cbba025 100644
--- a/src/material/divider/testing/divider-harness.ts
+++ b/src/material/divider/testing/divider-harness.ts
@@ -14,7 +14,7 @@ import {DividerHarnessFilters} from './divider-harness-filters';
  * @dynamic
  */
 export class MatDividerHarness extends ComponentHarness {
-  static hostSelector = 'mat-divider';
+  static hostSelector = '.mat-divider';
 
   static with(options: DividerHarnessFilters = {}) {
     return new HarnessPredicate(MatDividerHarness, options);
diff --git a/src/material/list/testing/action-list-harness.ts b/src/material/list/testing/action-list-harness.ts
index 4ba91a33434c..c0cc661793a2 100644
--- a/src/material/list/testing/action-list-harness.ts
+++ b/src/material/list/testing/action-list-harness.ts
@@ -15,7 +15,7 @@ import {getListItemPredicate, MatListItemHarnessBase} from './list-item-harness-
 export class MatActionListHarness extends MatListHarnessBase<
     typeof MatActionListItemHarness, MatActionListItemHarness, ActionListItemHarnessFilters> {
   /** The selector for the host element of a `MatActionList` instance. */
-  static hostSelector = 'mat-action-list';
+  static hostSelector = 'mat-action-list.mat-list';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a `MatActionListHarness` that meets
diff --git a/src/material/list/testing/list-harness.ts b/src/material/list/testing/list-harness.ts
index c66c6141ea6a..75b769a4a40e 100644
--- a/src/material/list/testing/list-harness.ts
+++ b/src/material/list/testing/list-harness.ts
@@ -15,7 +15,7 @@ import {getListItemPredicate, MatListItemHarnessBase} from './list-item-harness-
 export class MatListHarness extends
     MatListHarnessBase<typeof MatListItemHarness, MatListItemHarness, ListItemHarnessFilters> {
   /** The selector for the host element of a `MatList` instance. */
-  static hostSelector = 'mat-list';
+  static hostSelector = '.mat-list:not(mat-action-list):not(mat-nav-list):not(mat-selection-list)';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a `MatListHarness` that meets certain
diff --git a/src/material/list/testing/list-item-harness-base.ts b/src/material/list/testing/list-item-harness-base.ts
index f207a2d5f22c..014c6ddfe77d 100644
--- a/src/material/list/testing/list-item-harness-base.ts
+++ b/src/material/list/testing/list-item-harness-base.ts
@@ -32,7 +32,7 @@ export function getListItemPredicate<H extends MatListItemHarnessBase>(
 
 /** Harness for interacting with a list subheader. */
 export class MatSubheaderHarness extends ComponentHarness {
-  static hostSelector = '[mat-subheader], [matSubheader]';
+  static hostSelector = '.mat-subheader';
 
   static with(options: SubheaderHarnessFilters = {}): HarnessPredicate<MatSubheaderHarness> {
     return new HarnessPredicate(MatSubheaderHarness, options)
diff --git a/src/material/list/testing/nav-list-harness.ts b/src/material/list/testing/nav-list-harness.ts
index ef6e1040802c..428d2bfa5f06 100644
--- a/src/material/list/testing/nav-list-harness.ts
+++ b/src/material/list/testing/nav-list-harness.ts
@@ -15,7 +15,7 @@ import {getListItemPredicate, MatListItemHarnessBase} from './list-item-harness-
 export class MatNavListHarness extends MatListHarnessBase<
     typeof MatNavListItemHarness, MatNavListItemHarness, NavListItemHarnessFilters> {
   /** The selector for the host element of a `MatNavList` instance. */
-  static hostSelector = 'mat-nav-list';
+  static hostSelector = '.mat-nav-list';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a `MatNavListHarness` that meets
diff --git a/src/material/list/testing/selection-list-harness.ts b/src/material/list/testing/selection-list-harness.ts
index 10fb6df632db..c2bc08f7c515 100644
--- a/src/material/list/testing/selection-list-harness.ts
+++ b/src/material/list/testing/selection-list-harness.ts
@@ -19,7 +19,7 @@ import {getListItemPredicate, MatListItemHarnessBase} from './list-item-harness-
 export class MatSelectionListHarness extends MatListHarnessBase<
     typeof MatListOptionHarness, MatListOptionHarness, ListOptionHarnessFilters> {
   /** The selector for the host element of a `MatSelectionList` instance. */
-  static hostSelector = 'mat-selection-list';
+  static hostSelector = '.mat-selection-list';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a `MatSelectionListHarness` that meets
@@ -70,7 +70,7 @@ export class MatSelectionListHarness extends MatListHarnessBase<
 /** Harness for interacting with a list option. */
 export class MatListOptionHarness extends MatListItemHarnessBase {
   /** The selector for the host element of a `MatListOption` instance. */
-  static hostSelector = 'mat-list-option';
+  static hostSelector = '.mat-list-option';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a `MatListOptionHarness` that
diff --git a/src/material/progress-bar/testing/progress-bar-harness.ts b/src/material/progress-bar/testing/progress-bar-harness.ts
index 82dc9e60f602..722dd9288515 100644
--- a/src/material/progress-bar/testing/progress-bar-harness.ts
+++ b/src/material/progress-bar/testing/progress-bar-harness.ts
@@ -13,7 +13,7 @@ import {ProgressBarHarnessFilters} from './progress-bar-harness-filters';
 /** Harness for interacting with a standard mat-progress-bar in tests. */
 export class MatProgressBarHarness extends ComponentHarness {
   /** The selector for the host element of a `MatProgressBar` instance. */
-  static hostSelector = 'mat-progress-bar';
+  static hostSelector = '.mat-progress-bar';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a `MatProgressBarHarness` that meets
diff --git a/src/material/progress-spinner/testing/progress-spinner-harness.ts b/src/material/progress-spinner/testing/progress-spinner-harness.ts
index 907b04152bd3..65ef76f77e63 100644
--- a/src/material/progress-spinner/testing/progress-spinner-harness.ts
+++ b/src/material/progress-spinner/testing/progress-spinner-harness.ts
@@ -14,7 +14,7 @@ import {ProgressSpinnerHarnessFilters} from './progress-spinner-harness-filters'
 /** Harness for interacting with a standard mat-progress-spinner in tests. */
 export class MatProgressSpinnerHarness extends ComponentHarness {
   /** The selector for the host element of a `MatProgressSpinner` instance. */
-  static hostSelector = 'mat-progress-spinner,mat-spinner';
+  static hostSelector = '.mat-progress-spinner';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a `MatProgressSpinnerHarness` that
diff --git a/src/material/radio/testing/radio-harness.ts b/src/material/radio/testing/radio-harness.ts
index 1af8dac5f1f2..cb45fcde2c51 100644
--- a/src/material/radio/testing/radio-harness.ts
+++ b/src/material/radio/testing/radio-harness.ts
@@ -13,7 +13,7 @@ import {RadioButtonHarnessFilters, RadioGroupHarnessFilters} from './radio-harne
 /** Harness for interacting with a standard mat-radio-group in tests. */
 export class MatRadioGroupHarness extends ComponentHarness {
   /** The selector for the host element of a `MatRadioGroup` instance. */
-  static hostSelector = 'mat-radio-group';
+  static hostSelector = '.mat-radio-group';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a `MatRadioGroupHarness` that meets
@@ -156,7 +156,7 @@ export class MatRadioGroupHarness extends ComponentHarness {
 /** Harness for interacting with a standard mat-radio-button in tests. */
 export class MatRadioButtonHarness extends ComponentHarness {
   /** The selector for the host element of a `MatRadioButton` instance. */
-  static hostSelector = 'mat-radio-button';
+  static hostSelector = '.mat-radio-button';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a `MatRadioButtonHarness` that meets
diff --git a/src/material/slide-toggle/testing/slide-toggle-harness.ts b/src/material/slide-toggle/testing/slide-toggle-harness.ts
index 43444528228f..915e2c7cd022 100644
--- a/src/material/slide-toggle/testing/slide-toggle-harness.ts
+++ b/src/material/slide-toggle/testing/slide-toggle-harness.ts
@@ -14,7 +14,7 @@ import {SlideToggleHarnessFilters} from './slide-toggle-harness-filters';
 /** Harness for interacting with a standard mat-slide-toggle in tests. */
 export class MatSlideToggleHarness extends ComponentHarness {
   /** The selector for the host element of a `MatSlideToggle` instance. */
-  static hostSelector = 'mat-slide-toggle';
+  static hostSelector = '.mat-slide-toggle';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a `MatSlideToggleHarness` that meets
diff --git a/src/material/slider/testing/slider-harness.ts b/src/material/slider/testing/slider-harness.ts
index 51e558831c25..705d70788cbe 100644
--- a/src/material/slider/testing/slider-harness.ts
+++ b/src/material/slider/testing/slider-harness.ts
@@ -13,7 +13,7 @@ import {SliderHarnessFilters} from './slider-harness-filters';
 /** Harness for interacting with a standard mat-slider in tests. */
 export class MatSliderHarness extends ComponentHarness {
   /** The selector for the host element of a `MatSlider` instance. */
-  static hostSelector = 'mat-slider';
+  static hostSelector = '.mat-slider';
 
   /**
    * Gets a `HarnessPredicate` that can be used to search for a `MatSliderHarness` that meets
diff --git a/src/material/toolbar/testing/toolbar-harness.ts b/src/material/toolbar/testing/toolbar-harness.ts
index 9578002357eb..0d0dbc98cf06 100644
--- a/src/material/toolbar/testing/toolbar-harness.ts
+++ b/src/material/toolbar/testing/toolbar-harness.ts
@@ -17,7 +17,7 @@ export const enum MatToolbarSection {
 
 /** Harness for interacting with a standard mat-toolbar in tests. */
 export class MatToolbarHarness extends ContentContainerComponentHarness<MatToolbarSection> {
-  static hostSelector = 'mat-toolbar';
+  static hostSelector = '.mat-toolbar';
 
   private _getRows = this.locatorForAll(MatToolbarSection.ROW);