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259 lines
8.1 KiB
Ruby
259 lines
8.1 KiB
Ruby
# -*- coding: utf-8 -*-
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# frozen_string_literal: false
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require "timeout"
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require_relative "../helper"
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#
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# Following tests are my interpretation of the
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# {CSV RCF}[http://www.ietf.org/rfc/rfc4180.txt]. I only deviate from that
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# document in one place (intentionally) and that is to make the default row
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# separator <tt>$/</tt>.
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#
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class TestCSVParseGeneral < Test::Unit::TestCase
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extend DifferentOFS
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BIG_DATA = "123456789\n" * 1024
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def test_mastering_regex_example
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ex = %Q{Ten Thousand,10000, 2710 ,,"10,000","It's ""10 Grand"", baby",10K}
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assert_equal( [ "Ten Thousand", "10000", " 2710 ", nil, "10,000",
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"It's \"10 Grand\", baby", "10K" ],
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CSV.parse_line(ex) )
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end
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# Old Ruby 1.8 CSV library tests.
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def test_std_lib_csv
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[ ["\t", ["\t"]],
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["foo,\"\"\"\"\"\",baz", ["foo", "\"\"", "baz"]],
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["foo,\"\"\"bar\"\"\",baz", ["foo", "\"bar\"", "baz"]],
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["\"\"\"\n\",\"\"\"\n\"", ["\"\n", "\"\n"]],
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["foo,\"\r\n\",baz", ["foo", "\r\n", "baz"]],
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["\"\"", [""]],
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["foo,\"\"\"\",baz", ["foo", "\"", "baz"]],
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["foo,\"\r.\n\",baz", ["foo", "\r.\n", "baz"]],
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["foo,\"\r\",baz", ["foo", "\r", "baz"]],
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["foo,\"\",baz", ["foo", "", "baz"]],
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["\",\"", [","]],
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["foo", ["foo"]],
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[",,", [nil, nil, nil]],
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[",", [nil, nil]],
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["foo,\"\n\",baz", ["foo", "\n", "baz"]],
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["foo,,baz", ["foo", nil, "baz"]],
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["\"\"\"\r\",\"\"\"\r\"", ["\"\r", "\"\r"]],
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["\",\",\",\"", [",", ","]],
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["foo,bar,", ["foo", "bar", nil]],
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[",foo,bar", [nil, "foo", "bar"]],
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["foo,bar", ["foo", "bar"]],
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[";", [";"]],
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["\t,\t", ["\t", "\t"]],
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["foo,\"\r\n\r\",baz", ["foo", "\r\n\r", "baz"]],
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["foo,\"\r\n\n\",baz", ["foo", "\r\n\n", "baz"]],
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["foo,\"foo,bar\",baz", ["foo", "foo,bar", "baz"]],
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[";,;", [";", ";"]] ].each do |csv_test|
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assert_equal(csv_test.last, CSV.parse_line(csv_test.first))
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end
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[ ["foo,\"\"\"\"\"\",baz", ["foo", "\"\"", "baz"]],
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["foo,\"\"\"bar\"\"\",baz", ["foo", "\"bar\"", "baz"]],
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["foo,\"\r\n\",baz", ["foo", "\r\n", "baz"]],
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["\"\"", [""]],
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["foo,\"\"\"\",baz", ["foo", "\"", "baz"]],
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["foo,\"\r.\n\",baz", ["foo", "\r.\n", "baz"]],
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["foo,\"\r\",baz", ["foo", "\r", "baz"]],
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["foo,\"\",baz", ["foo", "", "baz"]],
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["foo", ["foo"]],
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[",,", [nil, nil, nil]],
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[",", [nil, nil]],
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["foo,\"\n\",baz", ["foo", "\n", "baz"]],
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["foo,,baz", ["foo", nil, "baz"]],
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["foo,bar", ["foo", "bar"]],
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["foo,\"\r\n\n\",baz", ["foo", "\r\n\n", "baz"]],
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["foo,\"foo,bar\",baz", ["foo", "foo,bar", "baz"]] ].each do |csv_test|
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assert_equal(csv_test.last, CSV.parse_line(csv_test.first))
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end
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end
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# From: http://ruby-talk.org/cgi-bin/scat.rb/ruby/ruby-core/6496
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def test_aras_edge_cases
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[ [%Q{a,b}, ["a", "b"]],
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[%Q{a,"""b"""}, ["a", "\"b\""]],
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[%Q{a,"""b"}, ["a", "\"b"]],
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[%Q{a,"b"""}, ["a", "b\""]],
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[%Q{a,"\nb"""}, ["a", "\nb\""]],
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[%Q{a,"""\nb"}, ["a", "\"\nb"]],
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[%Q{a,"""\nb\n"""}, ["a", "\"\nb\n\""]],
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[%Q{a,"""\nb\n""",\nc}, ["a", "\"\nb\n\"", nil]],
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[%Q{a,,,}, ["a", nil, nil, nil]],
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[%Q{,}, [nil, nil]],
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[%Q{"",""}, ["", ""]],
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[%Q{""""}, ["\""]],
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[%Q{"""",""}, ["\"",""]],
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[%Q{,""}, [nil,""]],
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[%Q{,"\r"}, [nil,"\r"]],
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[%Q{"\r\n,"}, ["\r\n,"]],
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[%Q{"\r\n,",}, ["\r\n,", nil]] ].each do |edge_case|
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assert_equal(edge_case.last, CSV.parse_line(edge_case.first))
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end
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end
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def test_james_edge_cases
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# A read at eof? should return nil.
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assert_equal(nil, CSV.parse_line(""))
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#
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# With Ruby 1.8 CSV it's impossible to tell an empty line from a line
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# containing a single +nil+ field. The old CSV library returns
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# <tt>[nil]</tt> in these cases, but <tt>Array.new</tt> makes more sense to
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# me.
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#
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assert_equal(Array.new, CSV.parse_line("\n1,2,3\n"))
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end
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def test_rob_edge_cases
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[ [%Q{"a\nb"}, ["a\nb"]],
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[%Q{"\n\n\n"}, ["\n\n\n"]],
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[%Q{a,"b\n\nc"}, ['a', "b\n\nc"]],
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[%Q{,"\r\n"}, [nil,"\r\n"]],
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[%Q{,"\r\n."}, [nil,"\r\n."]],
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[%Q{"a\na","one newline"}, ["a\na", 'one newline']],
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[%Q{"a\n\na","two newlines"}, ["a\n\na", 'two newlines']],
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[%Q{"a\r\na","one CRLF"}, ["a\r\na", 'one CRLF']],
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[%Q{"a\r\n\r\na","two CRLFs"}, ["a\r\n\r\na", 'two CRLFs']],
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[%Q{with blank,"start\n\nfinish"\n}, ['with blank', "start\n\nfinish"]],
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].each do |edge_case|
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assert_equal(edge_case.last, CSV.parse_line(edge_case.first))
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end
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end
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def test_non_regex_edge_cases
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# An early version of the non-regex parser fails this test
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[ [ "foo,\"foo,bar,baz,foo\",\"foo\"",
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["foo", "foo,bar,baz,foo", "foo"] ] ].each do |edge_case|
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assert_equal(edge_case.last, CSV.parse_line(edge_case.first))
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end
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assert_raise(CSV::MalformedCSVError) do
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CSV.parse_line("1,\"23\"4\"5\", 6")
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end
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end
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def test_malformed_csv_cr_first_line
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error = assert_raise(CSV::MalformedCSVError) do
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CSV.parse_line("1,2\r,3", row_sep: "\n")
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end
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assert_equal("Unquoted fields do not allow new line <\"\\r\"> in line 1.",
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error.message)
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end
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def test_malformed_csv_cr_middle_line
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csv = <<-CSV
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line,1,abc
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line,2,"def\nghi"
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line,4,some\rjunk
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line,5,jkl
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CSV
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error = assert_raise(CSV::MalformedCSVError) do
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CSV.parse(csv)
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end
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assert_equal("Unquoted fields do not allow new line <\"\\r\"> in line 4.",
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error.message)
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end
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def test_malformed_csv_unclosed_quote
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error = assert_raise(CSV::MalformedCSVError) do
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CSV.parse_line('1,2,"3...')
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end
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assert_equal("Unclosed quoted field in line 1.",
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error.message)
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end
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def test_malformed_csv_illegal_quote_middle_line
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csv = <<-CSV
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line,1,abc
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line,2,"def\nghi"
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line,4,8'10"
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line,5,jkl
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CSV
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error = assert_raise(CSV::MalformedCSVError) do
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CSV.parse(csv)
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end
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assert_equal("Illegal quoting in line 4.",
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error.message)
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end
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def test_the_parse_fails_fast_when_it_can_for_unquoted_fields
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assert_parse_errors_out('valid,fields,bad start"' + BIG_DATA)
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end
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def test_the_parse_fails_fast_when_it_can_for_unescaped_quotes
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assert_parse_errors_out('valid,fields,"bad start"unescaped' + BIG_DATA)
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end
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def test_field_size_limit_controls_lookahead
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assert_parse_errors_out( 'valid,fields,"' + BIG_DATA + '"',
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field_size_limit: 2048 )
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end
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def test_field_size_limit_in_extended_column_not_exceeding
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data = <<~DATA
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"a","b"
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"
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2
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",""
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DATA
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assert_nothing_raised(CSV::MalformedCSVError) do
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CSV.parse(data, field_size_limit: 4)
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end
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end
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def test_field_size_limit_in_extended_column_exceeding
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data = <<~DATA
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"a","b"
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"
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2345
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",""
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DATA
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assert_parse_errors_out(data, field_size_limit: 5)
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end
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def test_row_sep_auto_cr
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assert_equal([["a"]], CSV.parse("a\r"))
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end
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def test_row_sep_auto_lf
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assert_equal([["a"]], CSV.parse("a\n"))
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end
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def test_row_sep_auto_cr_lf
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assert_equal([["a"]], CSV.parse("a\r\n"))
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end
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def test_seeked_string_io
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input_with_bom = StringIO.new("\ufeffあ,い,う\r\na,b,c\r\n")
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input_with_bom.read(3)
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assert_equal([
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["あ", "い", "う"],
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["a", "b", "c"],
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],
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CSV.new(input_with_bom).each.to_a)
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end
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private
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def assert_parse_errors_out(data, **options)
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assert_raise(CSV::MalformedCSVError) do
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timeout = 0.2
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if defined?(RubyVM::MJIT.enabled?) and RubyVM::MJIT.enabled?
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timeout = 5 # for --jit-wait
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end
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Timeout.timeout(timeout) do
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CSV.parse(data, **options)
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fail("Parse didn't error out")
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end
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end
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end
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end
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