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# frozen_string_literal: false
require_relative "../helper"
class TestCSVInterfaceRead < Test::Unit::TestCase
extend DifferentOFS
def setup
super
@data = ""
@data << "1\t2\t3\r\n"
@data << "4\t5\r\n"
@input = Tempfile.new(["interface-read", ".csv"], binmode: true)
@input << @data
@input.rewind
@rows = [
["1", "2", "3"],
["4", "5"],
]
end
def teardown
@input.close(true)
super
end
def test_foreach
rows = []
CSV.foreach(@input.path, col_sep: "\t", row_sep: "\r\n").each do |row|
rows << row
end
assert_equal(@rows, rows)
end
def test_foreach_mode
rows = []
CSV.foreach(@input.path, "r", col_sep: "\t", row_sep: "\r\n").each do |row|
rows << row
end
assert_equal(@rows, rows)
end
def test_foreach_enumurator
rows = CSV.foreach(@input.path, col_sep: "\t", row_sep: "\r\n").to_a
assert_equal(@rows, rows)
end
def test_closed?
csv = CSV.open(@input.path, "r+", col_sep: "\t", row_sep: "\r\n")
assert_not_predicate(csv, :closed?)
csv.close
assert_predicate(csv, :closed?)
end
def test_open_auto_close
csv = nil
CSV.open(@input.path) do |_csv|
csv = _csv
end
assert_predicate(csv, :closed?)
end
def test_open_closed
csv = nil
CSV.open(@input.path) do |_csv|
csv = _csv
csv.close
end
assert_predicate(csv, :closed?)
end
def test_open_block_return_value
return_value = CSV.open(@input.path) do
"Return value."
end
assert_equal("Return value.", return_value)
end
def test_open_encoding_valid
# U+1F600 GRINNING FACE
# U+1F601 GRINNING FACE WITH SMILING EYES
File.open(@input.path, "w") do |file|
file << "\u{1F600},\u{1F601}"
end
CSV.open(@input.path, encoding: "utf-8") do |csv|
assert_equal([["\u{1F600}", "\u{1F601}"]],
csv.to_a)
end
end
def test_open_encoding_invalid
# U+1F600 GRINNING FACE
# U+1F601 GRINNING FACE WITH SMILING EYES
File.open(@input.path, "w") do |file|
file << "\u{1F600},\u{1F601}"
end
CSV.open(@input.path, encoding: "EUC-JP") do |csv|
error = assert_raise(CSV::MalformedCSVError) do
csv.shift
end
assert_equal("Invalid byte sequence in EUC-JP in line 1.",
error.message)
end
end
def test_open_encoding_nonexistent
_output, error = capture_output do
CSV.open(@input.path, encoding: "nonexistent") do
end
end
assert_equal("path:0: warning: Unsupported encoding nonexistent ignored\n",
error.gsub(/\A.+:\d+: /, "path:0: "))
end
def test_open_encoding_utf_8_with_bom
# U+FEFF ZERO WIDTH NO-BREAK SPACE, BOM
# U+1F600 GRINNING FACE
# U+1F601 GRINNING FACE WITH SMILING EYES
File.open(@input.path, "w") do |file|
file << "\u{FEFF}\u{1F600},\u{1F601}"
end
CSV.open(@input.path, encoding: "bom|utf-8") do |csv|
assert_equal([["\u{1F600}", "\u{1F601}"]],
csv.to_a)
end
end
def test_parse
assert_equal(@rows,
CSV.parse(@data, col_sep: "\t", row_sep: "\r\n"))
end
def test_parse_block
rows = []
CSV.parse(@data, col_sep: "\t", row_sep: "\r\n") do |row|
rows << row
end
assert_equal(@rows, rows)
end
def test_parse_enumerator
rows = CSV.parse(@data, col_sep: "\t", row_sep: "\r\n").to_a
assert_equal(@rows, rows)
end
def test_parse_headers_only
table = CSV.parse("a,b,c", headers: true)
assert_equal([
["a", "b", "c"],
[],
],
[
table.headers,
table.each.to_a,
])
end
def test_parse_line
assert_equal(["1", "2", "3"],
CSV.parse_line("1;2;3", col_sep: ";"))
end
def test_parse_line_shortcut
assert_equal(["1", "2", "3"],
"1;2;3".parse_csv(col_sep: ";"))
end
def test_parse_line_empty
assert_equal(nil, CSV.parse_line("")) # to signal eof
end
def test_parse_line_empty_line
assert_equal([], CSV.parse_line("\n1,2,3"))
end
def test_read
assert_equal(@rows,
CSV.read(@input.path, col_sep: "\t", row_sep: "\r\n"))
end
def test_readlines
assert_equal(@rows,
CSV.readlines(@input.path, col_sep: "\t", row_sep: "\r\n"))
end
def test_open_read
rows = CSV.open(@input.path, col_sep: "\t", row_sep: "\r\n") do |csv|
csv.read
end
assert_equal(@rows, rows)
end
def test_open_readlines
rows = CSV.open(@input.path, col_sep: "\t", row_sep: "\r\n") do |csv|
csv.readlines
end
assert_equal(@rows, rows)
end
def test_table
table = CSV.table(@input.path, col_sep: "\t", row_sep: "\r\n")
assert_equal(CSV::Table.new([
CSV::Row.new([:"1", :"2", :"3"], [4, 5, nil]),
]),
table)
end
def test_shift # aliased as gets() and readline()
CSV.open(@input.path, "rb+", col_sep: "\t", row_sep: "\r\n") do |csv|
rows = [
csv.shift,
csv.shift,
csv.shift,
]
assert_equal(@rows + [nil],
rows)
end
end
def test_enumerator
CSV.open(@input.path, col_sep: "\t", row_sep: "\r\n") do |csv|
assert_equal(@rows, csv.each.to_a)
end
end
def test_shift_and_each
CSV.open(@input.path, col_sep: "\t", row_sep: "\r\n") do |csv|
rows = []
rows << csv.shift
rows.concat(csv.each.to_a)
assert_equal(@rows, rows)
end
end
def test_each_twice
CSV.open(@input.path, col_sep: "\t", row_sep: "\r\n") do |csv|
assert_equal([
@rows,
[],
],
[
csv.each.to_a,
csv.each.to_a,
])
end
end
def test_eof?
eofs = []
CSV.open(@input.path, col_sep: "\t", row_sep: "\r\n") do |csv|
eofs << csv.eof?
csv.shift
eofs << csv.eof?
csv.shift
eofs << csv.eof?
end
assert_equal([false, false, true],
eofs)
end
def test_new_nil
assert_raise_with_message ArgumentError, "Cannot parse nil as CSV" do
CSV.new(nil)
end
end
def test_options_not_modified
options = {}.freeze
CSV.foreach(@input.path, **options)
CSV.open(@input.path, **options) {}
CSV.parse("", **options)
CSV.parse_line("", **options)
CSV.read(@input.path, **options)
CSV.readlines(@input.path, **options)
CSV.table(@input.path, **options)
end
end
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