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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
Rails.stubs(:root).returns(Pathname.new('.'))
@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)
wrapper.expects(:source_fragment).with('lib/file.rb', 42).returns('foo')
assert_equal [ code: 'foo', line_number: 42 ], wrapper.source_extracts
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)
wrapper.expects(:source_fragment).with('c:/path/to/rails/app/controller.rb', 27).returns('nothing')
assert_equal [ code: 'nothing', line_number: 27 ], wrapper.source_extracts
end
test '#source_extracts works with non standard backtrace' do
exc = TestError.new('invalid')
wrapper = ExceptionWrapper.new(nil, exc)
wrapper.expects(:source_fragment).with('invalid', 0).returns('nothing')
assert_equal [ code: 'nothing', line_number: 0 ], wrapper.source_extracts
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 '#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
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