# Module: Mocha::ClassMethods

Defined in:
  lib/mocha/class_methods.rb

## Overview

Methods added to all classes to allow mocking and stubbing on real (i.e. non-mock) objects.

## Instance Method Summary collapse

- #any_instance ⇒ Mock

  A mock object which will detect calls to any instance of this class.

## Instance Method Details

### #any_instance ⇒ `Mock`

Returns a mock object which will detect calls to any instance of this class.

Examples:

Return false to invocation of `Product#save` for any instance of `Product`.

    Product.any_instance.stubs(:save).returns(false)
    product_1 = Product.new
    assert_equal false, product_1.save
    product_2 = Product.new
    assert_equal false, product_2.save

Returns:

- (`Mock`) —

  a mock object which will detect calls to any instance of this class.

Raises:

- (`StubbingError`) —

  if attempting to stub method which is not allowed.

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    # File 'lib/mocha/class_methods.rb', line 45

    def any_instance
      if frozen?
        raise StubbingError.new("can't stub method on frozen object: #{mocha_inspect}.any_instance", caller)
      end
      @any_instance ||= AnyInstance.new(self)
    end