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require_relative "../helper"
class TestCSVParseInputsScanner < Test::Unit::TestCase
include CSVHelper
def test_scan_keep_over_chunks_nested_back
input = CSV::Parser::UnoptimizedStringIO.new("abcdefghijklmnl")
scanner = CSV::Parser::InputsScanner.new([input],
Encoding::UTF_8,
nil,
chunk_size: 2)
scanner.keep_start
assert_equal("abc", scanner.scan_all(/[a-c]+/))
scanner.keep_start
assert_equal("def", scanner.scan_all(/[d-f]+/))
scanner.keep_back
scanner.keep_back
assert_equal("abcdefg", scanner.scan_all(/[a-g]+/))
end
def test_scan_keep_over_chunks_nested_drop_back
input = CSV::Parser::UnoptimizedStringIO.new("abcdefghijklmnl")
scanner = CSV::Parser::InputsScanner.new([input],
Encoding::UTF_8,
nil,
chunk_size: 3)
scanner.keep_start
assert_equal("ab", scanner.scan(/../))
scanner.keep_start
assert_equal("c", scanner.scan(/./))
assert_equal("d", scanner.scan(/./))
scanner.keep_drop
scanner.keep_back
assert_equal("abcdefg", scanner.scan_all(/[a-g]+/))
end
def test_each_line_keep_over_chunks_multibyte
input = CSV::Parser::UnoptimizedStringIO.new("ab\n\u{3000}a\n")
scanner = CSV::Parser::InputsScanner.new([input],
Encoding::UTF_8,
nil,
chunk_size: 1)
each_line = scanner.each_line("\n")
assert_equal("ab\n", each_line.next)
scanner.keep_start
assert_equal("\u{3000}a\n", each_line.next)
scanner.keep_back
assert_equal("\u{3000}a\n", scanner.scan_all(/[^,]+/))
end
def test_each_line_keep_over_chunks_fit_chunk_size
input = CSV::Parser::UnoptimizedStringIO.new("\na")
scanner = CSV::Parser::InputsScanner.new([input],
Encoding::UTF_8,
nil,
chunk_size: 1)
each_line = scanner.each_line("\n")
assert_equal("\n", each_line.next)
scanner.keep_start
assert_equal("a", each_line.next)
scanner.keep_back
end
end
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