diff --git a/openvidu-testapp/src/app/components/dialogs/filter-dialog/filter-dialog.component.html b/openvidu-testapp/src/app/components/dialogs/filter-dialog/filter-dialog.component.html
index e8204734..657a2d5d 100644
--- a/openvidu-testapp/src/app/components/dialogs/filter-dialog/filter-dialog.component.html
+++ b/openvidu-testapp/src/app/components/dialogs/filter-dialog/filter-dialog.component.html
@@ -24,7 +24,7 @@
                 <label class="label">Remove filter</label>
                 <button mat-button id="remove-filter-btn" (click)="remove()">Remove</button>
                 <mat-form-field *ngIf="!!response" id="response-text-area" appearance="fill">
-                    <textarea id="api-response-text-area" [(ngModel)]="response" matInput readonly></textarea>
+                    <textarea id="filter-response-text-area" [(ngModel)]="response" matInput readonly></textarea>
                 </mat-form-field>
             </mat-dialog-content>
             <mat-dialog-actions>
diff --git a/openvidu-testapp/src/app/components/dialogs/publisher-properties-dialog/publisher-properties-dialog.component.html b/openvidu-testapp/src/app/components/dialogs/publisher-properties-dialog/publisher-properties-dialog.component.html
index 329c842c..37ae5e24 100644
--- a/openvidu-testapp/src/app/components/dialogs/publisher-properties-dialog/publisher-properties-dialog.component.html
+++ b/openvidu-testapp/src/app/components/dialogs/publisher-properties-dialog/publisher-properties-dialog.component.html
@@ -49,7 +49,7 @@
         </mat-form-field>
     </mat-dialog-content>
     <mat-dialog-actions>
-        <button mat-button [mat-dialog-close]="initValue">CANCEL</button>
-        <button mat-button [mat-dialog-close]="setCloseValue()">SAVE</button>
+        <button id="close-btn" mat-button [mat-dialog-close]="initValue">CANCEL</button>
+        <button id="save-btn" mat-button [mat-dialog-close]="setCloseValue()">SAVE</button>
     </mat-dialog-actions>
 </div>
\ No newline at end of file
diff --git a/openvidu-testapp/src/app/components/dialogs/session-properties-dialog/session-properties-dialog.component.html b/openvidu-testapp/src/app/components/dialogs/session-properties-dialog/session-properties-dialog.component.html
index 7f4254ae..51908ce6 100644
--- a/openvidu-testapp/src/app/components/dialogs/session-properties-dialog/session-properties-dialog.component.html
+++ b/openvidu-testapp/src/app/components/dialogs/session-properties-dialog/session-properties-dialog.component.html
@@ -83,7 +83,7 @@
                     <mat-form-field style="width: 70%">
                         <input matInput placeholder="Allowed filter" type="text" [(ngModel)]="filterName">
                     </mat-form-field>
-                    <button mat-icon-button style="width: 24px; height: 24px; line-height: 24px;" title="Add allowed filter" (click)="filters.push(filterName); filterName = '';">
+                    <button id="add-allowed-filter-btn" mat-icon-button style="width: 24px; height: 24px; line-height: 24px;" title="Add allowed filter" (click)="filters.push(filterName); filterName = '';">
                         <mat-icon style="font-size: 18px; line-height: 18px; width: 18px; height: 18px" aria-label="Add allowed filter">add_circle</mat-icon>
                     </button>
                 </div>
@@ -99,7 +99,7 @@
     </div>
 
     <mat-dialog-actions>
-        <button mat-button [mat-dialog-close]="undefined">CANCEL</button>
-        <button mat-button [mat-dialog-close]="{sessionProperties: sessionProperties, turnConf: turnConf, manualTurnConf: manualTurnConf, tokenOptions: generateTokenOptions(), customToken: customToken}">SAVE</button>
+        <button id="cancel-btn" mat-button [mat-dialog-close]="undefined">CANCEL</button>
+        <button id="save-btn" mat-button [mat-dialog-close]="{sessionProperties: sessionProperties, turnConf: turnConf, manualTurnConf: manualTurnConf, tokenOptions: generateTokenOptions(), customToken: customToken}">SAVE</button>
     </mat-dialog-actions>
 </div>
\ No newline at end of file
diff --git a/openvidu-testapp/src/app/components/test-sessions/test-sessions.component.html b/openvidu-testapp/src/app/components/test-sessions/test-sessions.component.html
index f8eacfa5..cfade2ac 100644
--- a/openvidu-testapp/src/app/components/test-sessions/test-sessions.component.html
+++ b/openvidu-testapp/src/app/components/test-sessions/test-sessions.component.html
@@ -2,8 +2,10 @@
   <div class="top-div">
     <div class="controls-div">
       <button id="add-user-btn" mat-raised-button color="primary" (click)="addUser()">ADD USER</button>
-      <button id="remove-user-btn" mat-raised-button color="primary" (click)="removeUser()" [disabled]="!users.length">REMOVE USER</button>
-      <button id="remove-all-users-btn" mat-raised-button color="primary" (click)="removeAllUsers()" [disabled]="!users.length">REMOVE ALL</button>
+      <button id="remove-user-btn" mat-raised-button color="primary" (click)="removeUser()" [disabled]="!users.length">REMOVE
+        USER</button>
+      <button id="remove-all-users-btn" mat-raised-button color="primary" (click)="removeAllUsers()" [disabled]="!users.length">REMOVE
+        ALL</button>
     </div>
     <div class="scenario-div">
       <mat-checkbox id="auto-join-checkbox" class="auto-join-check" [(ngModel)]="autoJoin" name="autoJoin">Auto join</mat-checkbox>
@@ -16,8 +18,9 @@
   </div>
 
   <div class="instance-div">
-    <app-openvidu-instance *ngFor="let user of users; let i=index" [openviduUrl]="openviduUrl" [openviduSecret]="openviduSecret" [sessionConf]="user" [index]="i">
+    <app-openvidu-instance *ngFor="let user of users; let i=index" [attr.id]="'openvidu-instance-' + i" [openviduUrl]="openviduUrl"
+      [openviduSecret]="openviduSecret" [sessionConf]="user" [index]="i">
     </app-openvidu-instance>
   </div>
 
-</div>
+</div>
\ No newline at end of file