mirror of https://github.com/tailix/libkernaux.git
44 lines
989 B
Ruby
44 lines
989 B
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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KernAux::Version.supports_utoa10? and RSpec.describe KernAux, '.utoa10' do
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subject(:utoa10) { described_class.utoa10 number }
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let(:number) { rand 0..(2**64 - 1) }
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it { is_expected.to be_instance_of String }
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it { is_expected.to be_frozen }
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it { is_expected.to eq number.to_s }
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context 'when number is 0' do
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let(:number) { 0 }
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it { is_expected.to eq '0' }
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end
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context 'when number is max uint64_t' do
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let(:number) { 2**64 - 1 }
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it { is_expected.to eq number.to_s }
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end
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context 'when number is -1' do
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let(:number) { -1 }
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specify do
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expect { utoa10 }.to \
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raise_error RangeError, 'can\'t convert negative number to uint64_t'
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end
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end
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context 'when number is greater than max uint64_t' do
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let(:number) { 2**64 }
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specify do
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expect { utoa10 }.to raise_error \
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RangeError, 'bignum too big to convert into `unsigned long long\''
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end
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end
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end
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