shard-spectator/spec/spectator/lazy_spec.cr
2021-02-13 17:33:52 -07:00

15 lines
416 B
Crystal

require "../spec_helper"
Spectator.describe Spectator::Lazy do
it "returns the value of the block" do
lazy = Spectator::Lazy(Int32).new
expect { lazy.get { 42 } }.to eq(42)
end
it "caches the value" do
lazy = Spectator::Lazy(Int32).new
count = 0
expect { lazy.get { count += 1 } }.to change { count }.from(0).to(1)
expect { lazy.get { count += 1 } }.to_not change { count }
end
end