Automated Test coverage Added

Author: engcom-Echo

app/code/Magento/Sales/Test/Mftf/Section/AdminInvoiceOrderInformationSection.xml

@@ -17,5 +17,7 @@
         <element name="customerEmail" type="text" selector=".order-account-information table tr:nth-of-type(2) > td a"/>
         <element name="customerGroup" type="text" selector=".order-account-information table tr:nth-of-type(3) > td"/>
         <element name="invoiceNoteComment" type="text" selector="div.note-list-comment"/>
+        <element name="sendEmail" type="button" selector=".send-email"/>
+        <element name="invoiceTitle" type="text" selector=".invoice-information .title"/>
     </section>
-</sections>
+</sections>

app/code/Magento/Sales/Test/Mftf/Test/AdminInvoiceOrderInvoiceEmailSentTest.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ /**
+  * Copyright © Magento, Inc. All rights reserved.
+  * See COPYING.txt for license details.
+  */
+-->
+
+<tests xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/testSchema.xsd">
+    <test name="AdminInvoiceOrderInvoiceEmailSentTest" extends="AdminInvoiceOrderTest">
+        <annotations>
+            <features value="Sales"/>
+            <stories value="Create an Invoice via the Admin and send email see confirmation"/>
+            <title value="Admin should be able to see confirmation message Of invoice email"/>
+            <description value="Admin should be able to see confirmation message Of invoice email"/>
+            <severity value="MAJOR"/>
+            <testCaseId value="git-36030"/>
+            <group value="sales"/>
+            <group value="cloud"/>
+        </annotations>
+        <remove keyForRemoval="checkIfOrderStatusIsProcessing"/>
+        <click selector="{{AdminInvoiceOrderInformationSection.sendEmail}}" stepKey="clickSendEmail"/>
+        <waitForElementVisible selector="{{AdminConfirmationModalSection.ok}}" stepKey="waitForConfirmationSendEmail"/>
+        <click selector="{{AdminConfirmationModalSection.ok}}" stepKey="confirmSendEmail" />
+        <grabTextFrom selector="{{AdminInvoiceOrderInformationSection.invoiceTitle}}" stepKey="grabTitle"/>
+        <assertStringContainsString stepKey="assertSendEmailConfirmation">
+            <actualResult type="const">$grabTitle</actualResult>
+            <expectedResult type="string">The invoice confirmation email was sent</expectedResult>
+        </assertStringContainsString>
+    </test>
+</tests>