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Contents
require "spec_helper"
describe Stellar::Price, "#from_f" do
subject{ Stellar::Price }
let(:seed){ 225571644875421139403973254661022579608 } #generated using Random.new
let(:random){ Random.new(seed) }
let(:iterations){ ENV["SMOKE_ITERATIONS"].present? ? ENV["SMOKE_ITERATIONS"].to_i : 2000}
it "withstands a random smoke test" do
iterations.times do |i|
expected = random.rand
actual_p = subject.from_f(expected)
actual = actual_p.to_f
expect(actual).to be_within(0.000000001).of(actual)
expect(actual_p.n).to be <= Stellar::Price::MAX_PRECISION
expect(actual_p.d).to be <= Stellar::Price::MAX_PRECISION
end
end
it "works with bigdecimal" do
whole = random.rand(1_000_000)
fractional = random.rand(10_000_000) # seven significant digits available for fractional
expected = BigDecimal.new("#{whole}.#{fractional}")
actual_p = subject.from_f(expected)
actual = BigDecimal.new(actual_p.n) / BigDecimal.new(actual_p.d)
expect(actual).to be_within(BigDecimal.new("0.000000001")).of(actual)
expect(actual_p.n).to be <= Stellar::Price::MAX_PRECISION
expect(actual_p.d).to be <= Stellar::Price::MAX_PRECISION
end
end
Version data entries
23 entries across 23 versions & 3 rubygems