changes to generate core dumps during tests if a segmentation fault happens

misc/spec/mix/measure_memory_spec.rb

@@ -107,7 +107,7 @@ describe "Measure Memory" do
     channel = 'ch_test_subscriber_system_size'
     body = '1'
 
-    nginx_run_server(config.merge({:header_template => "H"}), :timeout => 15) do |conf|
+    nginx_run_server(config.merge({:header_template => "H", :master_process => 'off', :daemon => 'off'}), :timeout => 15) do |conf|
       #warming up
       EventMachine.run do
         sub = EventMachine::HttpRequest.new(nginx_address + '/sub/' + channel.to_i.to_s).get :head => headers, :body => body

misc/spec/nginx_configuration.rb

@@ -2,8 +2,8 @@ module NginxConfiguration
   def self.default_configuration
     {
       :disable_start_stop_server => false,
-      :master_process => 'off',
-      :daemon => 'off',
+      :master_process => 'on',
+      :daemon => 'on',
 
       :content_type => 'text/html; charset=utf-8',
 
@@ -68,7 +68,7 @@ master_process    <%= master_process %>;
 daemon            <%= daemon %>;
 worker_processes  <%= nginx_workers %>;
 worker_rlimit_core  500M;
-working_directory <%= nginx_tests_tmp_dir %>;
+working_directory <%= File.join(nginx_tests_tmp_dir, "cores", config_id) %>;
 
 events {
   worker_connections  1024;

misc/spec/spec_helper.rb

@@ -10,9 +10,21 @@ require 'nginx_configuration'
 require 'custom_http_matchers'
 
 RSpec.configure do |config|
+  config.before(:suite) do
+    FileUtils.rm_rf Dir[File.join(NginxTestHelper.nginx_tests_tmp_dir, "cores", "**")]
+  end
+  config.before(:each) do
+    core_dir = File.join(File.join(NginxTestHelper.nginx_tests_tmp_dir, "cores", config_id))
+    FileUtils.mkdir_p core_dir
+    Dir.chdir core_dir
+  end
   config.after(:each) do
     NginxTestHelper::Config.delete_config_and_log_files(config_id) if has_passed?
   end
+  config.after(:suite) do
+    cores = Dir[File.join(NginxTestHelper.nginx_tests_tmp_dir, "cores", "**", "core")]
+    raise StandardError.new "\n\nCore dump(s) at:\n#{cores.join("\n")}\n\n" unless cores.empty?
+  end
   config.order = "random"
   config.include(CustomHttpMatchers)
 end