74 lines
2.3 KiB
Ruby
74 lines
2.3 KiB
Ruby
module DiasporaFederation
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describe Callbacks do
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subject(:callbacks) { Callbacks.new %i(some_event another_event) }
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context "callbacks" do
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it "defines a callback and calls it" do
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callbacks.on(:some_event) do
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"result"
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end
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expect(callbacks.trigger(:some_event)).to eq("result")
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end
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it "defines a callback with params and calls it" do
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callbacks.on(:some_event) do |arg1, arg2|
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"result: #{arg1}, #{arg2}"
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end
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expect(callbacks.trigger(:some_event, "foo", "bar")).to eq("result: foo, bar")
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end
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end
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describe "#on" do
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it "fails if an event is unknown" do
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expect { callbacks.on(:unknown_event) {} }.to raise_error ArgumentError, "Undefined event unknown_event"
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end
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it "fails if an event is unknown" do
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callbacks.on(:some_event) {}
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expect { callbacks.on(:some_event) {} }.to raise_error ArgumentError, "Already defined event some_event"
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end
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end
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describe "#trigger" do
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it "fails if an event is unknown" do
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expect { callbacks.trigger(:unknown_event) }.to raise_error ArgumentError, "Undefined event unknown_event"
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end
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end
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describe "#definition_complete?" do
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it "is false if nothing is defined" do
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expect(callbacks.definition_complete?).to be_falsey
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end
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it "is false if not all events are defined" do
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callbacks.on(:some_event) {}
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expect(callbacks.definition_complete?).to be_falsey
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end
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it "is true if all events are defined" do
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callbacks.on(:some_event) {}
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callbacks.on(:another_event) {}
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expect(callbacks.definition_complete?).to be_truthy
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end
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end
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describe "#missing_handlers" do
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it "contains all events if nothing isdefined" do
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expect(callbacks.missing_handlers).to eq(%i(some_event another_event))
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end
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it "contains the missing events if not all events are defined" do
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callbacks.on(:some_event) {}
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expect(callbacks.missing_handlers).to eq(%i(another_event))
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end
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it "is empty if all events are defined" do
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callbacks.on(:some_event) {}
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callbacks.on(:another_event) {}
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expect(callbacks.missing_handlers).to be_empty
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end
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end
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end
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end
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