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# frozen_string_literal: true
RSpec.describe Slack::Messenger::PayloadMiddleware::Base do
before(:each) do
@registry_backup = Slack::Messenger::PayloadMiddleware.registry.dup
Slack::Messenger::PayloadMiddleware.send(:remove_instance_variable, :@registry)
end
after(:each) do
# cleanup middleware registry
Slack::Messenger::PayloadMiddleware.registry
Slack::Messenger::PayloadMiddleware.send(:remove_instance_variable, :@registry)
# cleanup object constants
Object.send(:remove_const, :Subject) if Object.constants.include?(:Subject)
Slack::Messenger::PayloadMiddleware.send(:instance_variable_set, :@registry, @registry_backup)
end
describe "::middleware_name" do
it "registers class w/ given name" do
class Subject < Slack::Messenger::PayloadMiddleware::Base
end
expect(Slack::Messenger::PayloadMiddleware)
.to receive(:register).with(Subject, :subject)
class Subject
middleware_name :subject
end
end
it "uses symbolized name to register" do
class Subject < Slack::Messenger::PayloadMiddleware::Base
end
expect(Slack::Messenger::PayloadMiddleware)
.to receive(:register).with(Subject, :subject)
class Subject
middleware_name "subject"
end
end
end
describe "::options" do
it "allows setting default options for a middleware" do
class Subject < Slack::Messenger::PayloadMiddleware::Base
options foo: :bar
end
subject = Subject.new(:messenger)
expect(subject.options).to eq foo: :bar
subject = Subject.new(:messenger, foo: :baz)
expect(subject.options).to eq foo: :baz
end
end
describe "#initialize" do
it "sets given messenger as messenger" do
expect(described_class.new(:messenger).messenger).to eq :messenger
end
it "sets given options as opts" do
expect(described_class.new(:messenger, opts: :options).options).to eq opts: :options
end
end
describe "#call" do
it "raises NoMethodError (expects subclass to define)" do
expect do
described_class.new(:messenger).call
end.to raise_exception NoMethodError
end
end
end
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