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module RSpec
module Mocks
RSpec.shared_examples "complains when given blocks" do
it "complains if a { } block is given" do
expect {
target.to receive_messages(:a => 1) { "implementation" }
}.to raise_error "Implementation blocks aren't supported with `receive_messages`"
end
it "complains if a do; end; block is given" do
expect {
target.to receive_messages(:a => 1) do
"implementation"
end
}.to raise_error "Implementation blocks aren't supported with `receive_messages`"
end
end
RSpec.shared_examples "handles partially mocked objects correctly" do
let(:obj) { Struct.new(:a).new('original') }
it "resets partially mocked objects correctly" do
target.to receive_messages(:a => 1, :b => 2)
expect {
reset obj
}.to change { obj.a }.from(1).to("original")
end
end
RSpec.describe "allow(...).to receive_messages(:a => 1, :b => 2)" do
let(:obj) { double "Object" }
let(:target) { allow(obj) }
it "allows the object to respond to multiple messages" do
allow(obj).to receive_messages(:a => 1, :b => 2)
expect(obj.a).to eq 1
expect(obj.b).to eq 2
end
it_behaves_like "complains when given blocks"
it_behaves_like "handles partially mocked objects correctly"
end
RSpec.describe "allow_any_instance_of(...).to receive_messages(:a => 1, :b => 2)" do
let(:obj) { Object.new }
let(:target) { allow_any_instance_of(Object) }
it "allows the object to respond to multiple messages" do
allow_any_instance_of(Object).to receive_messages(:a => 1, :b => 2)
expect(obj.a).to eq 1
expect(obj.b).to eq 2
end
it "updates stubs on instances with existing stubs" do
allow(obj).to receive(:a).and_return(3)
expect(obj.a).to eq(3)
allow_any_instance_of(Object).to receive_messages(:a => 1, :b => 2)
expect(obj.a).to eq 1
expect(obj.b).to eq 2
end
it_behaves_like "complains when given blocks"
end
RSpec.describe "expect(...).to receive_messages(:a => 1, :b => 2)" do
let(:obj) { double "Object" }
let(:target) { expect(obj) }
let(:expectation_error) do
failure = nil
begin
verify_all
rescue RSpec::Mocks::MockExpectationError => error
failure = error
end
failure
end
it "sets up multiple expectations" do
expect(obj).to receive_messages(:a => 1, :b => 2)
obj.a
expect { verify_all }.to fail
end
it 'fails with a sensible message' do
expect(obj).to receive_messages(:a => 1, :b => 2)
obj.b
expect(expectation_error.to_s).to eq %Q{(Double "Object").a(no args)\n expected: 1 time with any arguments\n received: 0 times}
end
it 'fails with the correct location' do
expect(obj).to receive_messages(:a => 1, :b => 2); line = __LINE__
expect(expectation_error.backtrace[0]).to match(/#{__FILE__}:#{line}/)
end
it_behaves_like "complains when given blocks"
it_behaves_like "handles partially mocked objects correctly"
it "provides a matcher description" do
messages = { :a => 1, :b => 2 }
matcher = receive_messages(messages)
expect(matcher.description).to eq("receive messages: #{messages.inspect}")
end
end
RSpec.describe "expect_any_instance_of(...).to receive_messages(:a => 1, :b => 2)" do
let(:obj) { Object.new }
let(:target) { expect_any_instance_of(Object) }
it "sets up multiple expectations" do
expect_any_instance_of(Object).to receive_messages(:a => 1, :b => 2)
obj.a
expect { RSpec::Mocks.space.verify_all }.to fail
RSpec::Mocks.space.reset_all
end
it_behaves_like "complains when given blocks"
end
RSpec.describe "negative expectation failure" do
let(:obj) { Object.new }
example "allow(...).to_not receive_messages(:a => 1, :b => 2)" do
expect { allow(obj).to_not receive_messages(:a => 1, :b => 2) }.to(
raise_error "`allow(...).to_not receive_messages` is not supported " \
"since it doesn't really make sense. What would it even mean?"
)
end
example "allow_any_instance_of(...).to_not receive_messages(:a => 1, :b => 2)" do
expect { allow_any_instance_of(obj).to_not receive_messages(:a => 1, :b => 2) }.to(
raise_error "`allow_any_instance_of(...).to_not receive_messages` is not supported " \
"since it doesn't really make sense. What would it even mean?"
)
end
example "expect(...).to_not receive_messages(:a => 1, :b => 2)" do
expect { expect(obj).to_not receive_messages(:a => 1, :b => 2) }.to(
raise_error "`expect(...).to_not receive_messages` is not supported " \
"since it doesn't really make sense. What would it even mean?"
)
end
example "expect_any_instance_of(...).to_not receive_messages(:a => 1, :b => 2)" do
expect { expect_any_instance_of(obj).to_not receive_messages(:a => 1, :b => 2) }.to(
raise_error "`expect_any_instance_of(...).to_not receive_messages` is not supported " \
"since it doesn't really make sense. What would it even mean?"
)
end
end
end
end
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