Module: RSpec::Mocks::ExampleMethods

Includes:: ArgumentMatchers

Defined in:: lib/rspec/mocks/example_methods.rb

Overview

Contains methods intended to be used from within code examples. Mix this in to your test context (such as a test framework base class) to use rspec-mocks with your test framework. If you're using rspec-core, it'll take care of doing this for you.

Defined Under Namespace

Modules: ExpectHost

Instance Method Summary collapse

#allow ⇒ Object
Used to wrap an object in preparation for stubbing a method on it.
#allow_any_instance_of ⇒ Object
Used to wrap a class in preparation for stubbing a method on instances of it.
#allow_message_expectations_on_nil ⇒ Object deprecated Deprecated.
Use Configuration#allow_message_expectations_on_nil instead.
#class_double(doubled_class, *args) ⇒ Object
Constructs a test double against a specific class.
#class_spy(*args) ⇒ Object
Constructs a test double that is optimized for use with have_received against a specific class.
#double(*args) ⇒ Double
Constructs an instance of RSpec::Mocks::Double configured with an optional name, used for reporting in failure messages, and an optional hash of message/return-value pairs.
#expect ⇒ Object
Used to wrap an object in preparation for setting a mock expectation on it.
#expect_any_instance_of ⇒ Object
Used to wrap a class in preparation for setting a mock expectation on instances of it.
#have_received(method_name, &block) ⇒ Object
Verifies that the given object received the expected message during the course of the test.
#hide_const(constant_name) ⇒ Object
Hides the named constant with the given value.
#instance_double(doubled_class, *args) ⇒ Object
Constructs a test double against a specific class.
#instance_spy(*args) ⇒ Object
Constructs a test double that is optimized for use with have_received against a specific class.
#object_double(object_or_name, *args) ⇒ Object
Constructs a test double against a specific object.
#object_spy(*args) ⇒ Object
Constructs a test double that is optimized for use with have_received against a specific object.
#receive ⇒ Object
Used to specify a message that you expect or allow an object to receive.
#receive_message_chain ⇒ Object
stubs/mocks a chain of messages on an object or test double.
#receive_messages ⇒ Object
Shorthand syntax used to setup message(s), and their return value(s), that you expect or allow an object to receive.
#spy(*args) ⇒ Double
Constructs a test double that is optimized for use with have_received.
#stub_const(constant_name, value, options = {}) ⇒ Object
Stubs the named constant with the given value.
#without_partial_double_verification ⇒ Object
Turns off the verifying of partial doubles for the duration of the block, this is useful in situations where methods are defined at run time and you wish to define stubs for them but not turn off partial doubles for the entire run suite.

Methods included from ArgumentMatchers

#any_args, #anything, #array_excluding, #array_including, #boolean, #duck_type, #hash_excluding, #hash_including, #instance_of, #kind_of, #no_args

Instance Method Details

#allow ⇒ `Object`

Note:

If you disable the :expect syntax this method will be undefined.

Used to wrap an object in preparation for stubbing a method on it.

Examples:

allow(dbl).to receive(:foo).with(5).and_return(:return_value)

# File 'lib/rspec/mocks/example_methods.rb', line 309

#allow_any_instance_of ⇒ `Object`

Note:

This is only available when you have enabled the expect syntax.

Used to wrap a class in preparation for stubbing a method on instances of it.

Examples:

allow_any_instance_of(MyClass).to receive(:foo)

# File 'lib/rspec/mocks/example_methods.rb', line 327

#allow_message_expectations_on_nil ⇒ `Object`

Deprecated.

Use Configuration#allow_message_expectations_on_nil instead.

Disables warning messages about expectations being set on nil.

By default warning messages are issued when expectations are set on nil. This is to prevent false-positives and to catch potential bugs early on.

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# File 'lib/rspec/mocks/example_methods.rb', line 201
def allow_message_expectations_on_nil
  RSpec::Mocks.space.proxy_for(nil).warn_about_expectations = false
end

#class_double(doubled_class) ⇒ `Object` #class_double(doubled_class, name) ⇒ `Object` #class_double(doubled_class, stubs) ⇒ `Object` #class_double(doubled_class, name, stubs) ⇒ `Object`

Constructs a test double against a specific class. If the given class name has been loaded, only class methods defined on the class are allowed to be stubbed. In all other ways it behaves like a double.

Overloads:

#class_double(doubled_class) ⇒ Object
Parameters:
- doubled_class (String, Module)
#class_double(doubled_class, name) ⇒ Object
Parameters:
- doubled_class (String, Module)
- name (String/Symbol) —
  name or description to be used in failure messages
#class_double(doubled_class, stubs) ⇒ Object
Parameters:
- doubled_class (String, Module)
- stubs (Hash) —
  hash of message/return-value pairs
#class_double(doubled_class, name, stubs) ⇒ Object
Parameters:
- doubled_class (String, Module)
- name (String/Symbol) —
  name or description to be used in failure messages
- stubs (Hash) —
  hash of message/return-value pairs

Returns:

ClassVerifyingDouble

# File 'lib/rspec/mocks/example_methods.rb', line 79
def class_double(doubled_class, *args)
  ref = ObjectReference.for(doubled_class)
  ExampleMethods.declare_verifying_double(ClassVerifyingDouble, ref, *args)
end

#class_spy(doubled_class) ⇒ `Object` #class_spy(doubled_class, name) ⇒ `Object` #class_spy(doubled_class, stubs) ⇒ `Object` #class_spy(doubled_class, name, stubs) ⇒ `Object`

Constructs a test double that is optimized for use with have_received against a specific class. If the given class name has been loaded, only class methods defined on the class are allowed to be stubbed. With a normal double one has to stub methods in order to be able to spy them. An class_spy automatically spies on all class methods to which the class responds.

Overloads:

#class_spy(doubled_class) ⇒ Object
Parameters:
- doubled_class (String, Module)
#class_spy(doubled_class, name) ⇒ Object
Parameters:
- doubled_class (String, Class)
- name (String/Symbol) —
  name or description to be used in failure messages
#class_spy(doubled_class, stubs) ⇒ Object
Parameters:
- doubled_class (String, Module)
- stubs (Hash) —
  hash of message/return-value pairs
#class_spy(doubled_class, name, stubs) ⇒ Object
Parameters:
- doubled_class (String, Class)
- name (String/Symbol) —
  name or description to be used in failure messages
- stubs (Hash) —
  hash of message/return-value pairs

Returns:

ClassVerifyingDouble

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# File 'lib/rspec/mocks/example_methods.rb', line 191
def class_spy(*args)
  class_double(*args).as_null_object
end

#double ⇒ `Double` #double(name) ⇒ `Double` #double(stubs) ⇒ `Double` #double(name, stubs) ⇒ `Double`

Constructs an instance of RSpec::Mocks::Double configured with an optional name, used for reporting in failure messages, and an optional hash of message/return-value pairs.

Examples:

book = double("book", :title => "The RSpec Book")
book.title #=> "The RSpec Book"

card = double("card", :suit => "Spades", :rank => "A")
card.suit  #=> "Spades"
card.rank  #=> "A"

Overloads:

#double(name) ⇒ Double
Parameters:
- name (String/Symbol) —
  name or description to be used in failure messages
#double(stubs) ⇒ Double
Parameters:
- stubs (Hash) —
  hash of message/return-value pairs
#double(name, stubs) ⇒ Double
Parameters:
- name (String/Symbol) —
  name or description to be used in failure messages
- stubs (Hash) —
  hash of message/return-value pairs

Returns:

(Double)

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# File 'lib/rspec/mocks/example_methods.rb', line 34
def double(*args)
  ExampleMethods.declare_double(Double, *args)
end

#expect ⇒ `Object`

Note:

This method is usually provided by rspec-expectations. However, if you use rspec-mocks without rspec-expectations, there's a definition of it that is made available here. If you disable the :expect syntax this method will be undefined.

Used to wrap an object in preparation for setting a mock expectation on it.

Examples:

expect(obj).to receive(:foo).with(5).and_return(:return_value)

# File 'lib/rspec/mocks/example_methods.rb', line 297

#expect_any_instance_of ⇒ `Object`

Note:

If you disable the :expect syntax this method will be undefined.

Used to wrap a class in preparation for setting a mock expectation on instances of it.

Examples:

expect_any_instance_of(MyClass).to receive(:foo)

# File 'lib/rspec/mocks/example_methods.rb', line 318

#have_received(method_name, &block) ⇒ `Object`

Note:

have_received(...).with(...) is unable to work properly when passed arguments are mutated after the spy records the received message.

Verifies that the given object received the expected message during the course of the test. On a spy objects or as null object doubles this works for any method, on other objects the method must have been stubbed beforehand in order for messages to be verified.

Stubbing and verifying messages received in this way implements the Test Spy pattern.

Examples:

invitation = double('invitation', accept: true)
user.accept_invitation(invitation)
expect(invitation).to have_received(:accept)
# You can also use most message expectations:
expect(invitation).to have_received(:accept).with(mailer).once

Parameters:

method_name (Symbol) —
name of the method expected to have been called.

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# File 'lib/rspec/mocks/example_methods.rb', line 281
def have_received(method_name, &block)
  Matchers::HaveReceived.new(method_name, &block)
end

#hide_const(constant_name) ⇒ `Object`

Hides the named constant with the given value. The constant will be undefined for the duration of the test.

Like method stubs, the constant will be restored to its original value when the example completes.

Examples:

hide_const("MyClass") # => MyClass is now an undefined constant

Parameters:

constant_name (String) —
The fully qualified name of the constant. The current constant scoping at the point of call is not considered.

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# File 'lib/rspec/mocks/example_methods.rb', line 256
def hide_const(constant_name)
  ConstantMutator.hide(constant_name)
end

#instance_double(doubled_class) ⇒ `Object` #instance_double(doubled_class, name) ⇒ `Object` #instance_double(doubled_class, stubs) ⇒ `Object` #instance_double(doubled_class, name, stubs) ⇒ `Object`

Constructs a test double against a specific class. If the given class name has been loaded, only instance methods defined on the class are allowed to be stubbed. In all other ways it behaves like a double.

Overloads:

#instance_double(doubled_class) ⇒ Object
Parameters:
- doubled_class (String, Class)
#instance_double(doubled_class, name) ⇒ Object
Parameters:
- doubled_class (String, Class)
- name (String/Symbol) —
  name or description to be used in failure messages
#instance_double(doubled_class, stubs) ⇒ Object
Parameters:
- doubled_class (String, Class)
- stubs (Hash) —
  hash of message/return-value pairs
#instance_double(doubled_class, name, stubs) ⇒ Object
Parameters:
- doubled_class (String, Class)
- name (String/Symbol) —
  name or description to be used in failure messages
- stubs (Hash) —
  hash of message/return-value pairs

Returns:

InstanceVerifyingDouble

# File 'lib/rspec/mocks/example_methods.rb', line 56
def instance_double(doubled_class, *args)
  ref = ObjectReference.for(doubled_class)
  ExampleMethods.declare_verifying_double(InstanceVerifyingDouble, ref, *args)
end

#instance_spy(doubled_class) ⇒ `Object` #instance_spy(doubled_class, name) ⇒ `Object` #instance_spy(doubled_class, stubs) ⇒ `Object` #instance_spy(doubled_class, name, stubs) ⇒ `Object`

Constructs a test double that is optimized for use with have_received against a specific class. If the given class name has been loaded, only instance methods defined on the class are allowed to be stubbed. With a normal double one has to stub methods in order to be able to spy them. An instance_spy automatically spies on all instance methods to which the class responds.

Overloads:

#instance_spy(doubled_class) ⇒ Object
Parameters:
- doubled_class (String, Class)
#instance_spy(doubled_class, name) ⇒ Object
Parameters:
- doubled_class (String, Class)
- name (String/Symbol) —
  name or description to be used in failure messages
#instance_spy(doubled_class, stubs) ⇒ Object
Parameters:
- doubled_class (String, Class)
- stubs (Hash) —
  hash of message/return-value pairs
#instance_spy(doubled_class, name, stubs) ⇒ Object
Parameters:
- doubled_class (String, Class)
- name (String/Symbol) —
  name or description to be used in failure messages
- stubs (Hash) —
  hash of message/return-value pairs

Returns:

InstanceVerifyingDouble

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# File 'lib/rspec/mocks/example_methods.rb', line 144
def instance_spy(*args)
  instance_double(*args).as_null_object
end

#object_double(object_or_name) ⇒ `Object` #object_double(object_or_name, name) ⇒ `Object` #object_double(object_or_name, stubs) ⇒ `Object` #object_double(object_or_name, name, stubs) ⇒ `Object`

Constructs a test double against a specific object. Only the methods the object responds to are allowed to be stubbed. If a String argument is provided, it is assumed to reference a constant object which is used for verification. In all other ways it behaves like a double.

Overloads:

#object_double(object_or_name) ⇒ Object
Parameters:
- object_or_name (String, Object)
#object_double(object_or_name, name) ⇒ Object
Parameters:
- object_or_name (String, Object)
- name (String/Symbol) —
  name or description to be used in failure messages
#object_double(object_or_name, stubs) ⇒ Object
Parameters:
- object_or_name (String, Object)
- stubs (Hash) —
  hash of message/return-value pairs
#object_double(object_or_name, name, stubs) ⇒ Object
Parameters:
- object_or_name (String, Object)
- name (String/Symbol) —
  name or description to be used in failure messages
- stubs (Hash) —
  hash of message/return-value pairs

Returns:

ObjectVerifyingDouble

# File 'lib/rspec/mocks/example_methods.rb', line 102
def object_double(object_or_name, *args)
  ref = ObjectReference.for(object_or_name, :allow_direct_object_refs)
  ExampleMethods.declare_verifying_double(ObjectVerifyingDouble, ref, *args)
end

#object_spy(object_or_name) ⇒ `Object` #object_spy(object_or_name, name) ⇒ `Object` #object_spy(object_or_name, stubs) ⇒ `Object` #object_spy(object_or_name, name, stubs) ⇒ `Object`

Constructs a test double that is optimized for use with have_received against a specific object. Only instance methods defined on the object are allowed to be stubbed. With a normal double one has to stub methods in order to be able to spy them. An object_spy automatically spies on all methods to which the object responds.

Overloads:

#object_spy(object_or_name) ⇒ Object
Parameters:
- object_or_name (String, Object)
#object_spy(object_or_name, name) ⇒ Object
Parameters:
- object_or_name (String, Class)
- name (String/Symbol) —
  name or description to be used in failure messages
#object_spy(object_or_name, stubs) ⇒ Object
Parameters:
- object_or_name (String, Object)
- stubs (Hash) —
  hash of message/return-value pairs
#object_spy(object_or_name, name, stubs) ⇒ Object
Parameters:
- object_or_name (String, Class)
- name (String/Symbol) —
  name or description to be used in failure messages
- stubs (Hash) —
  hash of message/return-value pairs

Returns:

ObjectVerifyingDouble

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# File 'lib/rspec/mocks/example_methods.rb', line 167
def object_spy(*args)
  object_double(*args).as_null_object
end

#receive ⇒ `Object`

Note:

If you disable the :expect syntax this method will be undefined.

Used to specify a message that you expect or allow an object to receive. The object returned by receive supports the same fluent interface that should_receive and stub have always supported, allowing you to constrain the arguments or number of times, and configure how the object should respond to the message.

Examples:

expect(obj).to receive(:hello).with("world").exactly(3).times

# File 'lib/rspec/mocks/example_methods.rb', line 336

#receive_message_chain(method1, method2) ⇒ `Object` #receive_message_chain("method1.method2") ⇒ `Object` #receive_message_chain(method1, method_to_value_hash) ⇒ `Object`

Note:

If you disable the :expect syntax this method will be undefined.

stubs/mocks a chain of messages on an object or test double.

Warning:

Chains can be arbitrarily long, which makes it quite painless to violate the Law of Demeter in violent ways, so you should consider any use of receive_message_chain a code smell. Even though not all code smells indicate real problems (think fluent interfaces), receive_message_chain still results in brittle examples. For example, if you write allow(foo).to receive_message_chain(:bar, :baz => 37) in a spec and then the implementation calls foo.baz.bar, the stub will not work.

Examples:

allow(double).to receive_message_chain("foo.bar") { :baz }
allow(double).to receive_message_chain(:foo, :bar => :baz)
allow(double).to receive_message_chain(:foo, :bar) { :baz }
# Given any of ^^ these three forms ^^:
double.foo.bar # => :baz

# Common use in Rails/ActiveRecord:
allow(Article).to receive_message_chain("recent.published") { [Article.new] }

# File 'lib/rspec/mocks/example_methods.rb', line 361

#receive_messages ⇒ `Object`

Note:

If you disable the :expect syntax this method will be undefined.

Shorthand syntax used to setup message(s), and their return value(s), that you expect or allow an object to receive. The method takes a hash of messages and their respective return values. Unlike with receive, you cannot apply further customizations using a block or the fluent interface.

Examples:

allow(obj).to receive_messages(:speak => "Hello World")
allow(obj).to receive_messages(:speak => "Hello", :meow => "Meow")

# File 'lib/rspec/mocks/example_methods.rb', line 348

#spy ⇒ `Double` #spy(name) ⇒ `Double` #spy(stubs) ⇒ `Double` #spy(name, stubs) ⇒ `Double`

Constructs a test double that is optimized for use with have_received. With a normal double one has to stub methods in order to be able to spy them. A spy automatically spies on all methods.

Overloads:

#spy(name) ⇒ Double
Parameters:
- name (String/Symbol) —
  name or description to be used in failure messages
#spy(stubs) ⇒ Double
Parameters:
- stubs (Hash) —
  hash of message/return-value pairs
#spy(name, stubs) ⇒ Double
Parameters:
- name (String/Symbol) —
  name or description to be used in failure messages
- stubs (Hash) —
  hash of message/return-value pairs

Returns:

(Double)

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# File 'lib/rspec/mocks/example_methods.rb', line 120
def spy(*args)
  double(*args).as_null_object
end

#stub_const(constant_name, value, options = {}) ⇒ `Object`

Stubs the named constant with the given value. Like method stubs, the constant will be restored to its original value (or lack of one, if it was undefined) when the example completes.

Examples:

stub_const("MyClass", Class.new) # => Replaces (or defines) MyClass with a new class object.
stub_const("SomeModel::PER_PAGE", 5) # => Sets SomeModel::PER_PAGE to 5.

class CardDeck
  SUITS = [:Spades, :Diamonds, :Clubs, :Hearts]
  NUM_CARDS = 52
end
stub_const("CardDeck", Class.new)
CardDeck::SUITS # => uninitialized constant error
CardDeck::NUM_CARDS # => uninitialized constant error

stub_const("CardDeck", Class.new, :transfer_nested_constants => true)
CardDeck::SUITS # => our suits array
CardDeck::NUM_CARDS # => 52

stub_const("CardDeck", Class.new, :transfer_nested_constants => [:SUITS])
CardDeck::SUITS # => our suits array
CardDeck::NUM_CARDS # => uninitialized constant error

Parameters:

constant_name (String) —
The fully qualified name of the constant. The current constant scoping at the point of call is not considered.
value (Object) —
The value to make the constant refer to. When the example completes, the constant will be restored to its prior state.
options (Hash) (defaults to: {}) —
Stubbing options.

Options Hash (options):

:transfer_nested_constants (Boolean, Array<Symbol>) —
Determines what nested constants, if any, will be transferred from the original value of the constant to the new value of the constant. This only works if both the original and new values are modules (or classes).

Returns:

(Object) —
the stubbed value of the constant

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# File 'lib/rspec/mocks/example_methods.rb', line 241
def stub_const(constant_name, value, options={})
  ConstantMutator.stub(constant_name, value, options)
end

#without_partial_double_verification ⇒ `Object`

Turns off the verifying of partial doubles for the duration of the block, this is useful in situations where methods are defined at run time and you wish to define stubs for them but not turn off partial doubles for the entire run suite. (e.g. view specs in rspec-rails).

# File 'lib/rspec/mocks/example_methods.rb', line 289
def without_partial_double_verification
  original_state = Mocks.configuration.temporarily_suppress_partial_double_verification
  Mocks.configuration.temporarily_suppress_partial_double_verification = true
  yield
ensure
  Mocks.configuration.temporarily_suppress_partial_double_verification = original_state
end

Module: RSpec::Mocks::ExampleMethods

Overview

Defined Under Namespace

Instance Method Summary collapse

Methods included from ArgumentMatchers

Instance Method Details

#allow ⇒ Object

Examples:

#allow_any_instance_of ⇒ Object

Examples:

#allow_message_expectations_on_nil ⇒ Object

#class_double(doubled_class) ⇒ Object #class_double(doubled_class, name) ⇒ Object #class_double(doubled_class, stubs) ⇒ Object #class_double(doubled_class, name, stubs) ⇒ Object

#class_spy(doubled_class) ⇒ Object #class_spy(doubled_class, name) ⇒ Object #class_spy(doubled_class, stubs) ⇒ Object #class_spy(doubled_class, name, stubs) ⇒ Object

#double ⇒ Double #double(name) ⇒ Double #double(stubs) ⇒ Double #double(name, stubs) ⇒ Double

Examples:

#expect ⇒ Object

Examples:

#expect_any_instance_of ⇒ Object

Examples:

#have_received(method_name, &block) ⇒ Object

Examples:

#hide_const(constant_name) ⇒ Object

Examples:

#instance_double(doubled_class) ⇒ Object #instance_double(doubled_class, name) ⇒ Object #instance_double(doubled_class, stubs) ⇒ Object #instance_double(doubled_class, name, stubs) ⇒ Object

#instance_spy(doubled_class) ⇒ Object #instance_spy(doubled_class, name) ⇒ Object #instance_spy(doubled_class, stubs) ⇒ Object #instance_spy(doubled_class, name, stubs) ⇒ Object

#object_double(object_or_name) ⇒ Object #object_double(object_or_name, name) ⇒ Object #object_double(object_or_name, stubs) ⇒ Object #object_double(object_or_name, name, stubs) ⇒ Object

#object_spy(object_or_name) ⇒ Object #object_spy(object_or_name, name) ⇒ Object #object_spy(object_or_name, stubs) ⇒ Object #object_spy(object_or_name, name, stubs) ⇒ Object

#receive ⇒ Object

Examples:

#receive_message_chain(method1, method2) ⇒ Object #receive_message_chain("method1.method2") ⇒ Object #receive_message_chain(method1, method_to_value_hash) ⇒ Object

Warning:

Examples:

#receive_messages ⇒ Object

Examples:

#spy ⇒ Double #spy(name) ⇒ Double #spy(stubs) ⇒ Double #spy(name, stubs) ⇒ Double

#stub_const(constant_name, value, options = {}) ⇒ Object

Examples:

#without_partial_double_verification ⇒ Object

#allow ⇒ `Object`

#allow_any_instance_of ⇒ `Object`

#allow_message_expectations_on_nil ⇒ `Object`

#class_double(doubled_class) ⇒ `Object` #class_double(doubled_class, name) ⇒ `Object` #class_double(doubled_class, stubs) ⇒ `Object` #class_double(doubled_class, name, stubs) ⇒ `Object`

#class_spy(doubled_class) ⇒ `Object` #class_spy(doubled_class, name) ⇒ `Object` #class_spy(doubled_class, stubs) ⇒ `Object` #class_spy(doubled_class, name, stubs) ⇒ `Object`

#double ⇒ `Double` #double(name) ⇒ `Double` #double(stubs) ⇒ `Double` #double(name, stubs) ⇒ `Double`

#expect ⇒ `Object`

#expect_any_instance_of ⇒ `Object`

#have_received(method_name, &block) ⇒ `Object`

#hide_const(constant_name) ⇒ `Object`

#instance_double(doubled_class) ⇒ `Object` #instance_double(doubled_class, name) ⇒ `Object` #instance_double(doubled_class, stubs) ⇒ `Object` #instance_double(doubled_class, name, stubs) ⇒ `Object`

#instance_spy(doubled_class) ⇒ `Object` #instance_spy(doubled_class, name) ⇒ `Object` #instance_spy(doubled_class, stubs) ⇒ `Object` #instance_spy(doubled_class, name, stubs) ⇒ `Object`

#object_double(object_or_name) ⇒ `Object` #object_double(object_or_name, name) ⇒ `Object` #object_double(object_or_name, stubs) ⇒ `Object` #object_double(object_or_name, name, stubs) ⇒ `Object`

#object_spy(object_or_name) ⇒ `Object` #object_spy(object_or_name, name) ⇒ `Object` #object_spy(object_or_name, stubs) ⇒ `Object` #object_spy(object_or_name, name, stubs) ⇒ `Object`

#receive ⇒ `Object`

#receive_message_chain(method1, method2) ⇒ `Object` #receive_message_chain("method1.method2") ⇒ `Object` #receive_message_chain(method1, method_to_value_hash) ⇒ `Object`

#receive_messages ⇒ `Object`

#spy ⇒ `Double` #spy(name) ⇒ `Double` #spy(stubs) ⇒ `Double` #spy(name, stubs) ⇒ `Double`

#stub_const(constant_name, value, options = {}) ⇒ `Object`

#without_partial_double_verification ⇒ `Object`