38 lines
803 B
Ruby
38 lines
803 B
Ruby
# frozen_string_literal: true
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require "lazy_object"
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describe LazyObject do
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describe "#initialize" do
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it "does not evaluate the block" do
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expect { |block|
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described_class.new(&block)
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}.not_to yield_control
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end
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end
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describe "when receiving a message" do
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it "evaluates the block" do
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expect(described_class.new { 42 }.to_s).to eq "42"
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end
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end
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describe "#!" do
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it "delegates to the underlying object" do
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expect(!(described_class.new { false })).to be true
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end
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end
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describe "#!=" do
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it "delegates to the underlying object" do
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expect(described_class.new { 42 }).not_to eq 13
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end
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end
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describe "#==" do
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it "delegates to the underlying object" do
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expect(described_class.new { 42 }).to eq 42
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end
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end
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end
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