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require "spec_helper"
require "vagrant_cloud"
describe VagrantCloud::Instrumentor::Collection do
describe "#initialize" do
it "should be a Core type" do
expect(subject).to be_a(VagrantCloud::Instrumentor::Core)
end
it "should have a logger instrumentor by default" do
expect(subject.instrumentors.first).to be_a(VagrantCloud::Instrumentor::Logger)
end
it "should accept additional instrumentors" do
addition = VagrantCloud::Instrumentor::Core.new
instance = described_class.new(instrumentors: [addition])
expect(instance.instrumentors).to include(addition)
end
it "should accept single additional instrumentor" do
addition = VagrantCloud::Instrumentor::Core.new
instance = described_class.new(instrumentors: addition)
expect(instance.instrumentors).to include(addition)
end
end
describe "#add" do
it "should add a new instrumentor" do
addition = VagrantCloud::Instrumentor::Core.new
subject.add(addition)
expect(subject.instrumentors).to include(addition)
end
it "should return self" do
addition = VagrantCloud::Instrumentor::Core.new
expect(subject.add(addition)).to eq(subject)
end
it "should only add an instrumentor instance once" do
addition = VagrantCloud::Instrumentor::Core.new
subject.add(addition).add(addition)
expect(subject.instrumentors.count{|i| i == addition}).to eq(1)
end
it "should error if instance is not an instrumentor" do
expect { subject.add("string") }.to raise_error(TypeError)
end
it "should freeze instrumentors after adding" do
addition = VagrantCloud::Instrumentor::Core.new
subject.add(addition).add(addition)
expect(subject.instrumentors).to be_frozen
end
end
describe "#remove" do
it "should remove an instrumentor" do
addition = VagrantCloud::Instrumentor::Core.new
subject.add(addition).add(addition)
expect(subject.instrumentors).to include(addition)
subject.remove(addition)
expect(subject.instrumentors).not_to include(addition)
end
it "should return self" do
expect(subject.remove(nil)).to eq(subject)
end
it "should freeze instrumentors after removing" do
addition = VagrantCloud::Instrumentor::Core.new
subject.add(addition).add(addition)
subject.remove(addition)
expect(subject.instrumentors).to be_frozen
end
end
describe "#subscribe" do
it "should add a new subscription entry" do
expect(subject.subscriptions.size).to eq(0)
subject.subscribe("event", proc{})
expect(subject.subscriptions.size).to eq(1)
end
it "should freeze subscriptions after subscribing" do
subject.subscribe("event", proc{})
expect(subject.subscriptions).to be_frozen
end
it "should return self" do
expect(subject.subscribe("event", proc{})).to eq(subject)
end
it "should error if callable is not provided" do
expect { subject.subscribe("event") }.to raise_error(TypeError)
end
it "should error if non-callable is provided" do
expect { subject.subscribe("event", :thing) }.to raise_error(TypeError)
end
it "should error if callable and block are provided" do
expect { subject.subscribe("event", proc{}){} }.to raise_error(ArgumentError)
end
it "should add with callable argument" do
expect { subject.subscribe("event", proc{}) }.not_to raise_error
end
it "should add with block" do
expect { subject.subscribe("event"){} }.not_to raise_error
end
end
describe "#unsubscribe" do
it "should remove entry using callable instance" do
callable = proc{}
subject.subscribe("event", callable)
expect(subject.subscriptions.count).to eq(1)
subject.unsubscribe(callable)
expect(subject.subscriptions).to be_empty
end
it "should freeze subscriptions after remove" do
callable = proc{}
subject.subscribe("event", callable)
expect(subject.subscriptions.count).to eq(1)
subject.unsubscribe(callable)
expect(subject.subscriptions).to be_frozen
end
it "should return self" do
callable = proc{}
subject.subscribe("event", callable)
expect(subject.subscriptions.count).to eq(1)
expect(subject.unsubscribe(callable)).to eq(subject)
end
end
describe "#instrument" do
let(:logger) { double("logger") }
let(:event) { "event" }
let(:params) { {} }
before do
allow(VagrantCloud::Instrumentor::Logger).
to receive(:new).and_return(logger)
allow(logger).to receive(:instrument)
end
it "should call the logger instrumentor" do
expect(logger).to receive(:instrument).with(event, params)
subject.instrument(event, params)
end
it "should yield when a block is provided" do
run = false
subject.instrument(event, params) do
run = true
end
expect(run).to be_truthy
end
it "should return the result of the block when provided" do
expect(subject.instrument(event, params){ :result }).to eq(:result)
end
it "should add timing information to params" do
subject.instrument(event, params)
expect(params).to have_key(:timing)
end
it "should provide duration timing" do
expect(Time).to receive(:now).and_return(Time.now - 5)
expect(Time).to receive(:now).and_call_original
subject.instrument(event, params)
expect(params.dig(:timing, :duration)).to be_within(0.01).of(5)
end
context "when a subscription is added with exact name match" do
it "should call the subscription" do
run = false
callable = proc { run = true }
subject.subscribe(event, callable)
subject.instrument(event, params)
expect(run).to be_truthy
end
end
context "when a subscription is added with regex name match" do
it "should call the subscription" do
run = false
callable = proc { run = true }
subject.subscribe(/ev/, callable)
subject.instrument(event, params)
expect(run).to be_truthy
end
end
context "when a subscription is added with exact name not matching" do
it "should not call the subscription" do
run = false
callable = proc { run = true }
subject.subscribe("other", callable)
subject.instrument(event, params)
expect(run).to be_falsey
end
end
context "when a subscription is added with regex name not matching" do
it "should not call the subscription" do
run = false
callable = proc { run = true }
subject.subscribe(/ot/, callable)
subject.instrument(event, params)
expect(run).to be_falsey
end
end
end
end
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