class RSpec::Matchers::BuiltIn::ThrowSymbol

Public Class Methods

new(expected_symbol = nil, expected_arg=nil) click to toggle source
# File lib/rspec/matchers/built_in/throw_symbol.rb, line 5
def initialize(expected_symbol = nil, expected_arg=nil)
  @expected_symbol = expected_symbol
  @expected_arg = expected_arg
  @caught_symbol = @caught_arg = nil
end

Public Instance Methods

==(given_proc) click to toggle source
Alias for: matches?
description() click to toggle source
# File lib/rspec/matchers/built_in/throw_symbol.rb, line 64
def description
  "throw #{expected}"
end
failure_message_for_should() click to toggle source
# File lib/rspec/matchers/built_in/throw_symbol.rb, line 56
def failure_message_for_should
  "expected #{expected} to be thrown, got #{caught}"
end
failure_message_for_should_not() click to toggle source
# File lib/rspec/matchers/built_in/throw_symbol.rb, line 60
def failure_message_for_should_not
  "expected #{expected('no Symbol')}#{' not' if @expected_symbol} to be thrown, got #{caught}"
end
matches?(given_proc) click to toggle source
# File lib/rspec/matchers/built_in/throw_symbol.rb, line 11
def matches?(given_proc)
  begin
    if @expected_symbol.nil?
      given_proc.call
    else
      @caught_arg = catch :proc_did_not_throw_anything do
        catch @expected_symbol do
          given_proc.call
          throw :proc_did_not_throw_anything, :nothing_thrown
        end
      end

      if @caught_arg == :nothing_thrown
        @caught_arg = nil
      else
        @caught_symbol = @expected_symbol
      end
    end

    # Ruby 1.8 uses NameError with `symbol'
    # Ruby 1.9 uses ArgumentError with :symbol
  rescue NameError, ArgumentError => e
    unless e.message =~ %runcaught throw (`|\:)([a-zA-Z0-9_]*)(')?/
      other_exception = e
      raise
    end
    @caught_symbol = $2.to_sym
  rescue => other_exception
    raise
  ensure
    unless other_exception
      if @expected_symbol.nil?
        return !@caught_symbol.nil?
      else
        if @expected_arg.nil?
          return @caught_symbol == @expected_symbol
        else
          return (@caught_symbol == @expected_symbol) & (@caught_arg == @expected_arg)
        end
      end
    end
  end
end
Also aliased as: ==