Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with
or
.
Download ZIP
Tag: v2.6.0
Fetching contributors…

Cannot retrieve contributors at this time

48 lines (30 sloc) 1.469 kB

Stub return values

obj.stub(:message).and_return('this is the value to return')
obj.stub(:message) { 'this is the value to return' }

These two forms are somewhat interchangeable. The difference is that the argument to and_return is evaluated immediately, whereas the block contents are evaluated lazily when the obj receives the message message.

The block format is generally preferred as it is more terse and more consistent with other forms described below, but lazy evaluation can be confusing because things aren't evaluated in the order in which they are declared.

Fake implementation

obj.stub(:message) do |arg1, arg2|
  # set expectations about the args in this block
  # and/or set a return value
end

Raising/Throwing

obj.stub(:message).and_raise("this error")
obj.stub(:message).and_throw(:this_symbol)

You can also use the block format, for consistency with other stubs:

obj.stub(:message) { raise "this error" }
obj.stub(:message) { throw :this_symbol }

Argument constraints

Explicit arguments

obj.stub(:message).with('an argument') { ... }
obj.stub(:message).with('more_than', 'one_argument') { ... }

Argument matchers

obj.stub(:message).with(anything()) { ... }
obj.stub(:message).with(an_instance_of(Money)) { ... }
obj.stub(:message).with(hash_including(:a => 'b')) { ... }

Regular expressions

obj.stub(:message).with(/abc/) { ... }
Jump to Line
Something went wrong with that request. Please try again.