require "abstract_unit" module ActionDispatch class ExceptionWrapperTest < ActionDispatch::IntegrationTest class TestError < StandardError attr_reader :backtrace def initialize(*backtrace) @backtrace = backtrace.flatten end end class BadlyDefinedError < StandardError def backtrace nil end end setup do @cleaner = ActiveSupport::BacktraceCleaner.new @cleaner.add_silencer { |line| line !~ /^lib/ } end test "#source_extracts fetches source fragments for every backtrace entry" do exception = TestError.new("lib/file.rb:42:in `index'") wrapper = ExceptionWrapper.new(nil, exception) assert_called_with(wrapper, :source_fragment, ["lib/file.rb", 42], returns: "foo") do assert_equal [ code: "foo", line_number: 42 ], wrapper.source_extracts end end test "#source_extracts works with Windows paths" do exc = TestError.new("c:/path/to/rails/app/controller.rb:27:in 'index':") wrapper = ExceptionWrapper.new(nil, exc) assert_called_with(wrapper, :source_fragment, ["c:/path/to/rails/app/controller.rb", 27], returns: "nothing") do assert_equal [ code: "nothing", line_number: 27 ], wrapper.source_extracts end end test "#source_extracts works with non standard backtrace" do exc = TestError.new("invalid") wrapper = ExceptionWrapper.new(nil, exc) assert_called_with(wrapper, :source_fragment, ["invalid", 0], returns: "nothing") do assert_equal [ code: "nothing", line_number: 0 ], wrapper.source_extracts end end test "#application_trace returns traces only from the application" do exception = TestError.new(caller.prepend("lib/file.rb:42:in `index'")) wrapper = ExceptionWrapper.new(@cleaner, exception) assert_equal [ "lib/file.rb:42:in `index'" ], wrapper.application_trace end test "#status_code returns 400 for Rack::Utils::ParameterTypeError" do exception = Rack::Utils::ParameterTypeError.new wrapper = ExceptionWrapper.new(@cleaner, exception) assert_equal 400, wrapper.status_code end test "#application_trace cannot be nil" do nil_backtrace_wrapper = ExceptionWrapper.new(@cleaner, BadlyDefinedError.new) nil_cleaner_wrapper = ExceptionWrapper.new(nil, BadlyDefinedError.new) assert_equal [], nil_backtrace_wrapper.application_trace assert_equal [], nil_cleaner_wrapper.application_trace end test "#framework_trace returns traces outside the application" do exception = TestError.new(caller.prepend("lib/file.rb:42:in `index'")) wrapper = ExceptionWrapper.new(@cleaner, exception) assert_equal caller, wrapper.framework_trace end test "#framework_trace cannot be nil" do nil_backtrace_wrapper = ExceptionWrapper.new(@cleaner, BadlyDefinedError.new) nil_cleaner_wrapper = ExceptionWrapper.new(nil, BadlyDefinedError.new) assert_equal [], nil_backtrace_wrapper.framework_trace assert_equal [], nil_cleaner_wrapper.framework_trace end test "#full_trace returns application and framework traces" do exception = TestError.new(caller.prepend("lib/file.rb:42:in `index'")) wrapper = ExceptionWrapper.new(@cleaner, exception) assert_equal exception.backtrace, wrapper.full_trace end test "#full_trace cannot be nil" do nil_backtrace_wrapper = ExceptionWrapper.new(@cleaner, BadlyDefinedError.new) nil_cleaner_wrapper = ExceptionWrapper.new(nil, BadlyDefinedError.new) assert_equal [], nil_backtrace_wrapper.full_trace assert_equal [], nil_cleaner_wrapper.full_trace end test "#traces returns every trace by category enumerated with an index" do exception = TestError.new("lib/file.rb:42:in `index'", "/gems/rack.rb:43:in `index'") wrapper = ExceptionWrapper.new(@cleaner, exception) assert_equal({ "Application Trace" => [ id: 0, trace: "lib/file.rb:42:in `index'" ], "Framework Trace" => [ id: 1, trace: "/gems/rack.rb:43:in `index'" ], "Full Trace" => [ { id: 0, trace: "lib/file.rb:42:in `index'" }, { id: 1, trace: "/gems/rack.rb:43:in `index'" } ] }, wrapper.traces) end end end