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require 'securerandom'
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RSpec.describe Rex::Proto::LDAP::DnBinary do
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  let(:dn) do
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    'CN=User,CN=Users,DC=msf,DC=local'
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  end
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  let(:data) do
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    'abc123'
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  end
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  let(:sample) do
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    described_class.new(dn, data)
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  end
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  it 'encodes to the expected value' do
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    expect(sample.encode).to eq('B:12:616263313233:CN=User,CN=Users,DC=msf,DC=local')
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  end
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  it 'encodes an empty value' do
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    initial = described_class.new(dn, '')
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    encoded = initial.encode
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    expect(encoded).to eq('B:0::CN=User,CN=Users,DC=msf,DC=local')
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    decoded = described_class.decode(encoded)
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    expect(decoded.data).to eq('')
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  end
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  it 'throws exception with completely wrong format' do
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    expect { described_class.decode('definitely not a DN string') }.to raise_error(ArgumentError)
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  end
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  it 'throws exception without DN' do
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    expect { described_class.decode('B:12:616263313233') }.to raise_error(ArgumentError)
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  end
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  it 'throws exception on odd number of hex chars' do
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    expect { described_class.decode('B:11:61626331323:the_dn') }.to raise_error(ArgumentError)
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  end
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  it 'throws exception on inconsistent number of hex chars' do
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    expect { described_class.decode('B:12:626331323:the_dn') }.to raise_error(ArgumentError)
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  end
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  it 'reversibly decodes a random value' do
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    data = SecureRandom.bytes((SecureRandom.rand * 100).to_i + 1)
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    initial = described_class.new(dn, data)
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    encoded = initial.encode
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    decoded = described_class.decode(encoded)
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    expect(decoded.dn).to eq(initial.dn)
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    expect(decoded.data).to eq(initial.data)
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  end
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end
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