JezK
Edit File: spawner_error_handling_spec.rb
require 'stringio' shared_examples_for "handling errors in application initialization" do before :each do @stub = setup_rails_stub('foobar') @stub.use_vendor_rails('minimal') end after :each do teardown_rails_stub end it "raises an AppInitError if the spawned app raises a standard exception during startup" do File.prepend(@stub.environment_rb, "raise 'This is a dummy exception.'\n") begin spawn_stub_application(@stub, "print_exceptions" => false).close violated "Spawning the application should have raised an AppInitError." rescue AppInitError => e e.child_exception.message.should == "This is a dummy exception." end end it "raises an AppInitError if the spawned app raises a custom-defined exception during startup" do File.prepend(@stub.environment_rb, %{ class MyError < StandardError end raise MyError, "This is a custom exception." }) begin spawn_stub_application(@stub, "print_exceptions" => false).close violated "Spawning the application should have raised an AppInitError." rescue AppInitError => e e.child_exception.message.should == "This is a custom exception. (MyError)" end end it "raises an AppInitError if the spawned app calls exit() during startup" do File.prepend(@stub.environment_rb, "exit\n") begin spawn_stub_application(@stub, "print_exceptions" => false).close violated "Spawning the application should have raised an AppInitError." rescue AppInitError => e e.child_exception.class.should == SystemExit end end it "prints the exception to STDERR if the spawned app raised an error" do old_stderr = STDERR file = File.new('output.tmp', 'w+') begin Object.send(:remove_const, "STDERR") rescue nil Object.const_set("STDERR", file) File.prepend(@stub.environment_rb, "raise 'This is a dummy exception.'\n") block = lambda do spawn_stub_application(@stub).close end block.should raise_error(AppInitError) file.rewind data = file.read data.should =~ /spawn_stub_application/ data.should =~ /spawner_error_handling_spec\.rb/ ensure Object.send(:remove_const, "STDERR") rescue nil Object.const_set("STDERR", old_stderr) file.close rescue nil File.unlink('output.tmp') rescue nil end end end shared_examples_for "handling errors in framework initialization" do include Utils it "raises FrameworkInitError if the framework could not be loaded" do block = lambda do load_nonexistant_framework(:print_framework_loading_exceptions => false).close end block.should raise_error(FrameworkInitError) end it "prints the exception to STDERR if the framework could not be loaded" do old_stderr = STDERR file = File.new('output.tmp', 'w+') begin Object.send(:remove_const, "STDERR") rescue nil Object.const_set("STDERR", file) block = lambda do load_nonexistant_framework.close end block.should raise_error(FrameworkInitError) file.rewind data = file.read data.should =~ /load_nonexistant_framework/ data.should =~ /spawner_error_handling_spec\.rb/ ensure Object.send(:remove_const, "STDERR") rescue nil Object.const_set("STDERR", old_stderr) file.close rescue nil File.unlink('output.tmp') rescue nil end end end