Dangerfile: handle maven-failsafe-plugin report.

Author: php-coder

Dangerfile

@@ -597,3 +597,45 @@ else
 	# TODO: add link to wiki page (#530)
 	print_errors_summary 'robotframework-maven-plugin', errors_count
 end
+
+# Handle `mvn verify`
+#
+# Example:
+# <testng-results skipped="0" failed="1" total="114" passed="113">
+#   <test name="When user at index page" duration-ms="559" started-at="2017-03-05T19:34:06Z" finished-at="2017-03-05T19:34:06Z">
+#     <class name="ru.mystamps.web.tests.cases.WhenUserAtIndexPage">
+#       <test-method status="FAIL" signature="shouldExistsLinkForListingCategories()[pri:0, instance:ru.mystamps.web.tests.cases.WhenUserAtIndexPage@2187fff7]" name="shouldExistsLinkForListingCategories" duration-ms="3" started-at="2017-03-05T20:34:06Z" finished-at="2017-03-05T20:34:06Z">
+#         <exception class="java.lang.AssertionError">
+#           <message>
+#             <![CDATA[should exists link to page for listing categories]]>
+#           </message>
+#           <full-stacktrace>
+#             <![CDATA[java.lang.AssertionError: should exists link to page for listing categories
+#             at ru.mystamps.web.tests.cases.WhenUserAtIndexPage.shouldExistsLinkForListingCategories(WhenUserAtIndexPage.java:78)
+#             at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
+#             ...
+#
+failsafe_report = 'target/failsafe-reports/testng-results.xml'
+unless File.file?(failsafe_report)
+	warn("Couldn't find #{failsafe_report}. maven-failsafe-plugin result is unknown")
+else
+	errors_count = 0
+	doc = Nokogiri::XML(File.open(failsafe_report))
+	results  = doc.xpath('/testng-results').first
+	failures = results['failed'].to_i
+	if failures > 0
+		doc.xpath('//test-method[@status="FAIL"]').each do |node|
+			errors_count += 1
+			
+			clazz = node.parent['name']
+			file = 'src/test/java/' + clazz.gsub(/\./, '/') + '.java'
+			file = github.html_link(file)
+			testcase = clazz.split('.')[-1] + '.' + node['name']
+			msg = node.xpath('./exception/message').text.strip
+			# TODO: highlight line number
+			fail("maven-failsafe-plugin error in #{file}:\nTest case `#{testcase}` fails with error:\n#{msg}")
+		end
+		
+		print_errors_summary 'maven-failsafe-plugin', errors_count, 'https://github.com/php-coder/mystamps/wiki/integration-tests'
+	end
+end