class StructuredWarnings::Test::Warner

This warner is used in StructuredWarnings::Test::Assertions#assert_warn and StructuredWarnings::Test::Assertions#assert_no_warn blocks. It captures all warnings in format and provides access to them using the warned? method.

Public Instance Methods

format(warning, message, call_stack) click to toggle source

Overrides the public interface of StructuredWarnings::Warner. This method always returns nil to avoid warnings on stdout during assert_warn and assert_no_warn blocks.

# File lib/structured_warnings/test/warner.rb, line 10
def format(warning, message, call_stack)
  given_warnings << warning.new(message)
  nil
end

warned?(warning, message = nil) click to toggle source

Returns true if any warning or a subclass of warning was emitted.

# File lib/structured_warnings/test/warner.rb, line 16
def warned?(warning, message = nil)
  case message
  when Regexp
    given_warnings.any? {|w| w.is_a?(warning) && w.message =~ message}
  when String
    given_warnings.any? {|w| w.is_a?(warning) && w.message == message}
  when nil
    given_warnings.any? {|w| w.is_a?(warning)}
  else
    raise ArgumentError, "Unkown argument for 'message'"
  end
end