discourse/spec/lib/discourse_event_spec.rb

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# frozen_string_literal: true
RSpec.describe DiscourseEvent do
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describe "#events" do
it "defaults to {}" do
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begin
original_events = DiscourseEvent.events
DiscourseEvent.instance_variable_set(:@events, nil)
expect(DiscourseEvent.events).to eq({})
ensure
DiscourseEvent.instance_variable_set(:@events, original_events)
end
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end
describe "key value" do
it "defaults to an empty set" do
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expect(DiscourseEvent.events["event42"]).to eq(Set.new)
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end
end
end
context "when calling events" do
let(:harvey) { OpenStruct.new(name: "Harvey Dent", job: "District Attorney") }
let(:event_handler) { Proc.new { |user| user.name = "Two Face" } }
before { DiscourseEvent.on(:acid_face, &event_handler) }
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after { DiscourseEvent.off(:acid_face, &event_handler) }
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context "when event does not exist" do
it "does not raise an error" do
DiscourseEvent.trigger(:missing_event)
end
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end
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context "when single event exists" do
it "doesn't raise an error" do
DiscourseEvent.trigger(:acid_face, harvey)
end
it "changes the name" do
DiscourseEvent.trigger(:acid_face, harvey)
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expect(harvey.name).to eq("Two Face")
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end
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end
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context "when multiple events exist" do
let(:event_handler_2) { Proc.new { |user| user.job = "Supervillain" } }
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before do
DiscourseEvent.on(:acid_face, &event_handler_2)
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DiscourseEvent.trigger(:acid_face, harvey)
end
after { DiscourseEvent.off(:acid_face, &event_handler_2) }
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it "triggers both events" do
expect(harvey.job).to eq("Supervillain")
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expect(harvey.name).to eq("Two Face")
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end
end
describe "#all_off" do
let(:event_handler_2) { Proc.new { |user| user.job = "Supervillain" } }
before { DiscourseEvent.on(:acid_face, &event_handler_2) }
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it "removes all handlers with a key" do
harvey.job = "gardening"
DiscourseEvent.all_off(:acid_face)
DiscourseEvent.trigger(:acid_face, harvey) # Doesn't change anything
expect(harvey.job).to eq("gardening")
end
end
end
it "allows using kwargs" do
begin
handler =
Proc.new do |name:, message:|
expect(name).to eq("Supervillain")
expect(message).to eq("Two Face")
end
DiscourseEvent.on(:acid_face, &handler)
DiscourseEvent.trigger(:acid_face, name: "Supervillain", message: "Two Face")
ensure
DiscourseEvent.off(:acid_face, &handler)
end
end
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end