Dump crash files into test failure messages

lib/assets/junit.xml.erb

@@ -11,6 +11,7 @@
         <testcase classname=<%= test[:test_group].encode(:xml => :attr) %> name=<%= test[:name].encode(:xml => :attr) %> time="<%= test[:duration] %>">
           <% (test[:failures] || []).each do |failure| %>
             <failure message=<%= failure[:failure_message].encode(:xml => :attr) %>>
+              <%= (failure[:failure_trace] || '').encode(:xml => :text) %>
             </failure>
           <% end %>
         </testcase>

lib/trainer/options.rb

@@ -39,6 +39,11 @@ def self.available_options
                                      env_name: "TRAINER_XCPRETTY_NAMING",
                                      description: "Produces class name and test name identical to xcpretty naming in junit file",
                                      is_string: false,
+                                     default_value: false),
+        FastlaneCore::ConfigItem.new(key: :include_crash_trace,
+                                     env_name: "TRAINER_INCLUDE_CRASH_TRACE",
+                                     description: "If there is a crash associated with a test failure, the contents of the .crash file will be included in the failure text",
+                                     is_string: false,
                                      default_value: false)
       ]
     end

lib/trainer/test_parser.rb

@@ -48,14 +48,15 @@ def self.auto_convert(config)
 
     def initialize(path, config = {})
       path = File.expand_path(path)
+      plist_dir = File.dirname path
       UI.user_error!("File not found at path '#{path}'") unless File.exist?(path)
 
       self.file_content = File.read(path)
       self.raw_json = Plist.parse_xml(self.file_content)
       return if self.raw_json["FormatVersion"].to_s.length.zero? # maybe that's a useless plist file
 
       ensure_file_valid!
-      parse_content(config[:xcpretty_naming])
+      parse_content(plist_dir, config[:xcpretty_naming], config[:include_crash_trace])
     end
 
     # Returns the JUnit report as String
@@ -121,7 +122,7 @@ def test_group_and_name(testable_summary, test, xcpretty_naming)
     end
 
     # Convert the Hashes and Arrays in something more useful
-    def parse_content(xcpretty_naming)
+    def parse_content(plist_dir, xcpretty_naming, include_crash_trace)
       self.data = self.raw_json["TestableSummaries"].collect do |testable_summary|
         summary_row = {
           project_path: testable_summary["ProjectPath"],
@@ -149,6 +150,14 @@ def parse_content(xcpretty_naming)
                   failure_message: "#{current_failure['Message']} (#{current_failure['FileName']}:#{current_failure['LineNumber']})"
                 }
               end
+              if include_crash_trace
+                activity_summaries = current_test['ActivitySummaries'] || []
+                crash_attachment_file = activity_summaries.map { |a| a['DiagnosticReportFileName'] }.compact.find { |f| f.end_with? '.crash' }
+                unless crash_attachment_file.nil?
+                  crash_attachment_path = File.join(plist_dir, 'Attachments', crash_attachment_file)
+                  current_row[:failures].first[:failure_trace] = File.open(crash_attachment_path, &:read)
+                end
+              end
             end
             current_row
           end