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# frozen_string_literal: true
require_relative '../test_helper'
require 'zip/ioextras'
class AbstractInputStreamTest < Minitest::Test
# AbstractInputStream subclass that provides a read method
TEST_LINES = [
"Hello world#{$INPUT_RECORD_SEPARATOR}",
"this is the second line#{$INPUT_RECORD_SEPARATOR}",
'this is the last line'
].freeze
TEST_STRING = TEST_LINES.join
class TestAbstractInputStream
include ::Zip::IOExtras::AbstractInputStream
def initialize(string)
super()
@contents = string
@read_ptr = 0
end
def sysread(chars_to_read, _buf = nil)
ret_val = @contents[@read_ptr, chars_to_read]
@read_ptr += chars_to_read
ret_val
end
def produce_input
sysread(100)
end
def input_finished?
@contents[@read_ptr].nil?
end
end
def setup
@io = TestAbstractInputStream.new(TEST_STRING)
end
def test_gets
assert_equal(TEST_LINES[0], @io.gets)
assert_equal(1, @io.lineno)
assert_equal(TEST_LINES[0].length, @io.pos)
assert_equal(TEST_LINES[1], @io.gets)
assert_equal(2, @io.lineno)
assert_equal(TEST_LINES[2], @io.gets)
assert_equal(3, @io.lineno)
assert_nil(@io.gets)
assert_equal(4, @io.lineno)
end
def test_gets_multi_char_seperator
assert_equal('Hell', @io.gets('ll'))
assert_equal("o world#{$INPUT_RECORD_SEPARATOR}this is the second l", @io.gets('d l'))
end
LONG_LINES = [
"#{'x' * 48}\r\n",
"#{'y' * 49}\r\n",
'rest'
].freeze
def test_gets_mulit_char_seperator_split
io = TestAbstractInputStream.new(LONG_LINES.join)
assert_equal(LONG_LINES[0], io.gets("\r\n"))
assert_equal(LONG_LINES[1], io.gets("\r\n"))
assert_equal(LONG_LINES[2], io.gets("\r\n"))
end
def test_gets_with_sep_and_index
io = TestAbstractInputStream.new(LONG_LINES.join)
assert_equal('x', io.gets("\r\n", 1))
assert_equal("#{'x' * 47}\r", io.gets("\r\n", 48))
assert_equal("\n", io.gets(nil, 1))
assert_equal('yy', io.gets(nil, 2))
end
def test_gets_with_index
assert_equal(TEST_LINES[0], @io.gets(100))
assert_equal('this', @io.gets(4))
end
def test_each_line
line_num = 0
@io.each_line do |line|
assert_equal(TEST_LINES[line_num], line)
line_num += 1
end
end
def test_readlines
assert_equal(TEST_LINES, @io.readlines)
end
def test_readline
test_gets
begin
@io.readline
raise 'EOFError expected'
rescue EOFError
end
end
end
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