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# frozen_string_literal: true
RSpec.describe Dry::Logic::Operations::Set do
subject(:operation) { described_class.new(is_int, gt_18) }
include_context "predicates"
let(:is_int) { Dry::Logic::Rule::Predicate.build(int?) }
let(:gt_18) { Dry::Logic::Rule::Predicate.build(gt?, args: [18]) }
describe "#call" do
it "applies all its rules to the input" do
expect(operation.(19)).to be_success
expect(operation.(17)).to be_failure
end
end
describe "#to_ast" do
it "returns ast" do
expect(operation.to_ast).to eql(
[:set, [[:predicate, [:int?, [[:input, undefined]]]], [:predicate, [:gt?, [[:num, 18], [:input, undefined]]]]]]
)
end
it "returns result ast" do
expect(operation.(17).to_ast).to eql(
[:set, [[:predicate, [:gt?, [[:num, 18], [:input, 17]]]]]]
)
end
it "returns result ast with an :id" do
expect(operation.with(id: :age).(17).to_ast).to eql(
[:failure, [:age, [:set, [[:predicate, [:gt?, [[:num, 18], [:input, 17]]]]]]]]
)
end
end
describe "#to_s" do
it "returns string representation" do
expect(operation.to_s).to eql("set(int?, gt?(18))")
end
end
end
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