MAGETWO-91409: Rush theme not available on Themes Grid with clean 2.3 installation

- added functional test

Author: dthampy

dev/tests/acceptance/tests/functional/Magento/FunctionalTest/Theme/Page/ThemesPage.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ /**
+  * Copyright © Magento, Inc. All rights reserved.
+  * See COPYING.txt for license details.
+  */
+-->
+
+<pages xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xsi:noNamespaceSchemaLocation="../../../../../../vendor/magento/magento2-functional-testing-framework/src/Magento/FunctionalTestingFramework/Page/etc/PageObject.xsd">
+    <page name="ThemesPageIndex" url="admin/system_design_theme/" area="admin" module="Magento_Theme">
+        <section name="AdminThemeSection"/>
+    </page>
+</pages>

dev/tests/acceptance/tests/functional/Magento/FunctionalTest/Theme/Section/AdminThemeSection.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ /**
+  * Copyright © Magento, Inc. All rights reserved.
+  * See COPYING.txt for license details.
+  */
+-->
+
+<sections xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:noNamespaceSchemaLocation="../../../../../../vendor/magento/magento2-functional-testing-framework/src/Magento/FunctionalTestingFramework/Page/etc/SectionObject.xsd">
+    <section name="AdminThemeSection">
+        <!--All rows in a specific Column e.g. {{Section.rowsInColumn('columnName')}}-->
+        <element name="rowsInColumn" type="text" selector="//tr/td[contains(@class, '{{column}}')]" parameterized="true"/>
+        <!--selector for Theme Title column since it needs to be handled separately-->
+        <element name="rowsInThemeTitleColumn" type="text" selector="//tbody/tr/td[contains(@class, 'parent_theme')]/preceding-sibling::td"/>
+        <element name="rowsInColumn" type="text" selector="//tbody/tr/td[contains(@class, '{{column}}')]" parameterized="true"/>
+        <!--Specific cell e.g. {{Section.gridCell('Name')}}-->
+        <element name="gridCell" type="text" selector="//table[@id='theme_grid_table']//td[contains(text(), '{{gridCellText}}')]" parameterized="true"/>
+        <element name="columnHeader" type="text" selector="//thead/tr/th[contains(@class, 'data-grid-th')]/span[text() = '{{label}}']" parameterized="true" timeout="30"/>
+    </section>
+</sections>

dev/tests/acceptance/tests/functional/Magento/FunctionalTest/Theme/Test/ThemeTest.xml

@@ -0,0 +1,31 @@
+<?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="../../../../../../vendor/magento/magento2-functional-testing-framework/src/Magento/FunctionalTestingFramework/Test/etc/testSchema.xsd">
+    <test name="ThemeTest">
+        <annotations>
+            <features value="Theme Test"/>
+            <title value="Magento Rush theme should not be available in Themes grid"/>
+            <description value="Magento Rush theme should not be available in Themes grid"/>
+            <severity value="MAJOR"/>
+            <testCaseId value="MAGETWO-91409"/>
+            <group value="theme"/>
+        </annotations>
+        <after>
+            <actionGroup ref="logout" stepKey="logoutOfAdmin"/>
+        </after>
+        <!--Login to Admin Area-->
+        <actionGroup ref="LoginAsAdmin" stepKey="loginToAdminArea"/>
+        <!--Navigate to Themes page-->
+        <amOnPage url="{{ThemesPageIndex.url}}" stepKey="navigateToThemesIndexPage" />
+        <waitForPageLoad stepKey="wait1"/>
+        <dontSee selector="{{AdminThemeSection.gridCell('Magento Rush')}}" stepKey="dontSeeRushThemeInTitleColumn"/>
+        <seeNumberOfElements selector="{{AdminThemeSection.rowsInColumn('theme_path')}}" userInput="2" stepKey="see2RowsOnTheGrid"/>
+    </test>
+</tests>