mirror of https://github.com/tailix/libclayer.git
53 lines
1.2 KiB
Ruby
53 lines
1.2 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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KernAux::Version.with_ntoa? and RSpec.describe KernAux, '.utoa16' do
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subject(:utoa16) { described_class.utoa16 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 "0x#{number.to_s(16)}" }
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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 '0x0' }
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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 "0x#{number.to_s(16)}" }
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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 { utoa16 }.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 { utoa16 }.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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context 'when number is not numeric' do
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let(:number) { rand(0..(2**64 - 1)).to_s }
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specify do
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expect { utoa16 }.to raise_error \
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TypeError, 'no implicit conversion from string'
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end
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end
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end
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