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Contents
Feature: allow with a simple return value
Use the `allow` method with the `receive` matcher on a test double or a real
object to tell the object to return a value (or values) in response to a given
message. Nothing happens if the message is never received.
Scenario: stub with no return value
Given a file named "example_spec.rb" with:
"""ruby
describe "a stub with no return value specified" do
let(:collaborator) { double("collaborator") }
it "returns nil" do
allow(collaborator).to receive(:message)
expect(collaborator.message).to be(nil)
end
end
"""
When I run `rspec example_spec.rb`
Then the examples should all pass
Scenario: stubs with return values
Given a file named "example_spec.rb" with:
"""ruby
describe "a stub with a return value" do
context "specified in a block" do
it "returns the specified value" do
collaborator = double("collaborator")
allow(collaborator).to receive(:message) { :value }
expect(collaborator.message).to eq(:value)
end
end
context "specified with #and_return" do
it "returns the specified value" do
collaborator = double("collaborator")
allow(collaborator).to receive(:message).and_return(:value)
expect(collaborator.message).to eq(:value)
end
end
end
"""
When I run `rspec example_spec.rb`
Then the examples should all pass
Version data entries
39 entries across 39 versions & 8 rubygems