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# frozen_string_literal: true
require 'stringio'
require 'tempfile'
require 'minitest/autorun'
# We can't require the executable file because it doesn't
# have the '.rb' extension, so we have to load it.
unless defined?(CLI)
load File.join(__dir__, '..','..', 'bin', 'ascii85')
end
describe 'CLI' do
it 'should recognize the -h and --help options' do
[%w[-h], %w[--help]].each do |args|
cli = CLI.new(args)
assert_equal :help, cli.options[:action]
end
end
it 'should recognize the -V and --version options' do
[%w[-V], %w[--version]].each do |args|
cli = CLI.new(args)
assert_equal :version, cli.options[:action]
end
end
it 'should complain about superfluous arguments' do
assert_raises(OptionParser::ParseError) do
CLI.new(%w[foo bar])
end
end
describe 'wrap' do
it 'should default to wrapping at 80 characters' do
cli = CLI.new([])
assert_equal 80, cli.options[:wrap]
end
it 'should recognize the -w and --wrap options' do
[%w[-w 17], %w[--wrap 17]].each do |args|
cli = CLI.new(args)
assert_equal 17, cli.options[:wrap]
end
end
it 'should recognize the no-wrapping setting' do
cli = CLI.new(%w[-w 0])
assert_equal false, cli.options[:wrap]
end
it 'should raise an error if the wrap option is not an integer' do
assert_raises(OptionParser::ParseError) do
CLI.new(%w[-w foo])
end
end
end
describe 'encoding' do
it 'should encode from STDIN' do
stdin = StringIO.new('Ruby')
stdout = StringIO.new
CLI.new([], stdin: stdin, stdout: stdout).call
assert_equal '<~;KZGo~>', stdout.string
end
it 'should accept "-" as a file name' do
stdin = StringIO.new('Ruby')
stdout = StringIO.new
CLI.new(['-'], stdin: stdin, stdout: stdout).call
assert_equal '<~;KZGo~>', stdout.string
end
it 'should encode a file' do
begin
f = Tempfile.create('ascii85_encode')
f.write('Ruby')
f.close
stdout = StringIO.new
CLI.new([f.path], stdout: stdout).call
assert_equal '<~;KZGo~>', stdout.string
ensure
File.unlink(f.path)
end
end
it 'should wrap lines' do
begin
f = Tempfile.create('ascii85_wrap')
f.write('a' * 20)
f.close
stdout = StringIO.new
CLI.new([f.path, '-w2'], stdout: stdout).call
assert stdout.string.lines.all? { |l| l.chomp.length <= 2 }
ensure
File.unlink(f.path)
end
end
it 'should fail when the input file is not found' do
assert_raises(StandardError) do
CLI.new(['./foo/bar/baz']).call
end
end
it 'should fail when the input file is not readable' do
begin
f = Tempfile.create('ascii85_encode')
f.chmod(0o000)
assert_raises(StandardError) do
CLI.new([f.path]).call
end
ensure
File.unlink(f.path)
end
end
end
describe 'decoding' do
it 'should decode from STDIN' do
stdin = StringIO.new('<~;KZGo~>')
stdout = StringIO.new
CLI.new(['-d'], stdin: stdin, stdout: stdout).call
assert_equal 'Ruby', stdout.string
end
it 'should accept "-" as a file name' do
stdin = StringIO.new('<~;KZGo~>')
stdout = StringIO.new
CLI.new(['-d','-'], stdin: stdin, stdout: stdout).call
assert_equal 'Ruby', stdout.string
end
it 'should decode a file' do
begin
f = Tempfile.create('ascii85_decode')
f.write('<~;KZGo~>')
f.close
stdout = StringIO.new
CLI.new(['-d', f.path], stdout: stdout).call
assert_equal 'Ruby', stdout.string
ensure
File.unlink(f.path)
end
end
it 'should fail when the input file is not found' do
assert_raises(StandardError) do
CLI.new(['-d', './foo/bar/baz']).call
end
end
it 'should fail when the input file is not readable' do
begin
f = Tempfile.create('ascii85_decode')
f.chmod(0o000)
assert_raises(StandardError) do
CLI.new(['-d', f.path]).call
end
ensure
File.unlink(f.path)
end
end
describe 'invalid input' do
it 'should return the empty string when the input does not have delimiters' do
stdin = StringIO.new('No delimiters')
stdout = StringIO.new
CLI.new(['-d'], stdin: stdin, stdout: stdout).call
assert_equal '', stdout.string
end
ERROR_CASES = [
'<~!!y!!~>',
'<~!!z!!~>',
'<~s8W-#~>',
'<~!~>',
]
it 'should raise an error when invalid input is encountered' do
ERROR_CASES.each do |input|
stdin = StringIO.new(input)
stdout = StringIO.new
assert_raises(Ascii85::DecodingError) do
CLI.new(['-d'], stdin: stdin, stdout: stdout).call
end
end
end
end
end
end
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