WhenAnonymousUserOpenNotExistingCategoryPage: port to Robot Framework.

Addressed to #530

No functional changes.

Author: php-coder

src/test/config/testng.xml

@@ -31,12 +31,6 @@
 		</classes>
 	</test>
 
-	<test name="When anonymous user open not existing category page">
-		<classes>
-			<class name="ru.mystamps.web.tests.cases.WhenAnonymousUserOpenNotExistingCategoryPage" />
-		</classes>
-	</test>
-	
 	<test name="When admin add country">
 		<classes>
 			<class name="ru.mystamps.web.tests.cases.WhenAdminAddCountry" />

src/test/java/ru/mystamps/web/tests/cases/WhenAnonymousUserOpenNotExistingCategoryPage.java

@@ -1,5 +1,5 @@
 *** Settings ***
-Documentation    Verify access to category related pages
+Documentation    Verify access to category related pages (including non-existing)
 Library          Selenium2Library
 Suite Setup      Before Test Suite
 Suite Teardown   After Test Suite
@@ -12,6 +12,12 @@ Anonymous user cannot create category
 	Element Text Should Be  id=error-code  403
 	Element Text Should Be  id=error-msg  Forbidden
 
+Opening a page of non-existing category show an error
+	[Documentation]         Verify that access to non-existing category returns 404 error
+	Go To                   ${SITE_URL}/category/category-404-error-test
+	Element Text Should Be  id=error-code  404
+	Element Text Should Be  id=error-msg  Requested page${\n}not found
+
 *** Keywords ***
 Before Test Suite
 	[Documentation]                     Open browser and register fail hook