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require 'spec_helper'
module Bogus
describe Double do
shared_examples_for "double behavior" do
it "tracks existence of test doubles" do
mock(double_tracker).track(object)
double.stub.foo("a", "b") { "the result" }
end
it "does not track existence of the double if verify fails" do
stub(verifies_stub_definition).verify!(object, :foo, ["a", "b"]) { raise NameError }
expect {
double.stub.foo("a", "b") { "the result" }
}.to raise_error
expect(double_tracker).not_to have_received.track(object)
end
it "verifies stub definition" do
mock(verifies_stub_definition).verify!(object, :foo, ["a", "b"])
double.stub.foo("a", "b") { "the result" }
end
it "stubs shadow methods" do
object.extend RecordInteractions
mock(object.__shadow__).stubs(:foo, "a", "b")
double.stub.foo("a", "b") { "the result" }
end
it "mocks shadow methods" do
object.extend RecordInteractions
mock(object.__shadow__).mocks(:foo, "a", "b")
double.mock.foo("a", "b") { "the result" }
end
it "adds method overwriting" do
double.stub.foo("a", "b") { "the result" }
expect(overwrites_methods.overwrites).to eq([[object, :foo]])
end
it "records double interactions" do
mock(records_double_interactions).record(object, :foo, ["a", "b"])
double.stub.foo("a", "b") { "the result" }
end
end
let(:double_tracker) { stub(track: nil) }
let(:verifies_stub_definition) { stub(verify!: nil) }
let(:records_double_interactions) { stub(record: nil) }
let(:overwrites_methods) { FakeMethodOverwriter.new }
let(:double) { isolate(Double) }
context "with regular objects" do
let(:object) { Samples::Foo.new }
include_examples "double behavior"
end
context "with fakes" do
let(:object) { Samples::FooFake.new }
include_examples "double behavior"
end
class FakeMethodOverwriter
def overwrite(object, method)
overwrites << [object, method]
object.extend RecordInteractions
end
def overwrites
@overwrites ||= []
end
end
end
end
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