Module: RSpec::Core::Backports

### Home Classes Methods

### In Files

- lib/rspec/core/backport_random.rb

### Namespace

- CLASS RSpec::Core::Backports::Random

### Methods

- ::coerce_to
- ::coerce_to_int

### Class/Module Index

Quicksearch

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No matching classes.

# RSpec::Core::Backports

@private

Methods used internally by the backports.

This code was (mostly) ported from the backports gem found at github.com/marcandre/backports which is subject to this license:

Copyright (c) 2009 Marc-Andre Lafortune

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

The goal is to provide a random number generator in Ruby versions that do not have one. This was added to support localization of random spec ordering.

These were in multiple files in backports, but merged into one here.

### Constants

Undefined

  Used internally to make it easy to deal with optional arguments. (from Rubinius)

### Public Class Methods

coerce_to(obj, cls, meth) click to toggle source

Helper method to coerce a value into a specific class. Raises a TypeError if the coercion fails or the returned value is not of the right class. (from Rubinius)

    # File lib/rspec/core/backport_random.rb, line 45
    def self.coerce_to(obj, cls, meth)
      return obj if obj.kind_of?(cls)

      begin
        ret = obj.__send__(meth)
      rescue Exception => e
        raise TypeError, "Coercion error: #{obj.inspect}.#{meth} => #{cls} failed:\n"                             "(#{e.message})"
      end
      raise TypeError, "Coercion error: obj.#{meth} did NOT return a #{cls} (was #{ret.class})" unless ret.kind_of? cls
      ret
    end

coerce_to_int(obj) click to toggle source

@private

    # File lib/rspec/core/backport_random.rb, line 59
    def self.coerce_to_int(obj)
      coerce_to(obj, Integer, :to_int)
    end

[Validate]

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