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Feature: Allowing messages
[Test doubles](./test-doubles) are "strict" by default -- messages that have not been specifically
allowed or expected will trigger an error. Use `allow(...).to receive(...)` to configure
which messages the double is allowed to receive. You can also use `allow(...).to
receive_messages(...)` to configure allowed messages (and return values) in bulk.
Scenario: Allowed messages return nil by default
Given a file named "allow_message_spec.rb" with:
"""ruby
RSpec.describe "allow" do
it "returns nil from allowed messages" do
dbl = double("Some Collaborator")
allow(dbl).to receive(:foo)
expect(dbl.foo).to be_nil
end
end
"""
When I run `rspec allow_message_spec.rb`
Then the examples should all pass
Scenario: Messages can be allowed in bulk using `receive_messages`
Given a file named "receive_messages_spec.rb" with:
"""ruby
RSpec.describe "receive_messages" do
it "configures return values for the provided messages" do
dbl = double("Some Collaborator")
allow(dbl).to receive_messages(:foo => 2, :bar => 3)
expect(dbl.foo).to eq(2)
expect(dbl.bar).to eq(3)
end
end
"""
When I run `rspec receive_messages_spec.rb`
Then the examples should all pass
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