discourse/spec/components/discourse_event_spec.rb

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# frozen_string_literal: true
require 'rails_helper'
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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
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let(:harvey) {
OpenStruct.new(
name: 'Harvey Dent',
job: 'District Attorney'
)
}
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let(:event_handler) do
Proc.new { |user| user.name = 'Two Face' }
end
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before do
DiscourseEvent.on(:acid_face, &event_handler)
end
after do
DiscourseEvent.off(:acid_face, &event_handler)
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end
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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) do
Proc.new { |user| user.job = 'Supervillian' }
end
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before do
DiscourseEvent.on(:acid_face, &event_handler_2)
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DiscourseEvent.trigger(:acid_face, harvey)
end
after do
DiscourseEvent.off(:acid_face, &event_handler_2)
end
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it 'triggers both events' do
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expect(harvey.job).to eq('Supervillian')
expect(harvey.name).to eq('Two Face')
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end
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end
end
end