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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@22784 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
304 lines
8 KiB
Ruby
304 lines
8 KiB
Ruby
#!/usr/bin/env ruby -w
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# encoding: UTF-8
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# tc_interface.rb
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#
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# Created by James Edward Gray II on 2005-10-31.
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# Copyright 2005 James Edward Gray II. You can redistribute or modify this code
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# under the terms of Ruby's license.
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require "test/unit"
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require "csv"
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class TestCSVInterface < Test::Unit::TestCase
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def setup
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@path = File.join(File.dirname(__FILE__), "temp_test_data.csv")
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File.open(@path, "w") do |file|
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file << "1\t2\t3\r\n"
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file << "4\t5\r\n"
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end
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@expected = [%w{1 2 3}, %w{4 5}]
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end
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def teardown
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File.unlink(@path)
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end
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### Test Read Interface ###
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def test_foreach
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CSV.foreach(@path, col_sep: "\t", row_sep: "\r\n") do |row|
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assert_equal(@expected.shift, row)
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end
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end
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def test_open_and_close
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csv = CSV.open(@path, "r+", col_sep: "\t", row_sep: "\r\n")
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assert_not_nil(csv)
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assert_instance_of(CSV, csv)
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assert_equal(false, csv.closed?)
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csv.close
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assert(csv.closed?)
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ret = CSV.open(@path) do |new_csv|
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csv = new_csv
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assert_instance_of(CSV, new_csv)
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"Return value."
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end
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assert(csv.closed?)
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assert_equal("Return value.", ret)
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end
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def test_parse
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data = File.read(@path)
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assert_equal( @expected,
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CSV.parse(data, col_sep: "\t", row_sep: "\r\n") )
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CSV.parse(data, col_sep: "\t", row_sep: "\r\n") do |row|
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assert_equal(@expected.shift, row)
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end
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end
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def test_parse_line
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row = CSV.parse_line("1;2;3", col_sep: ";")
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assert_not_nil(row)
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assert_instance_of(Array, row)
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assert_equal(%w{1 2 3}, row)
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# shortcut interface
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row = "1;2;3".parse_csv(col_sep: ";")
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assert_not_nil(row)
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assert_instance_of(Array, row)
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assert_equal(%w{1 2 3}, row)
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end
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def test_read_and_readlines
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assert_equal( @expected,
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CSV.read(@path, col_sep: "\t", row_sep: "\r\n") )
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assert_equal( @expected,
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CSV.readlines(@path, col_sep: "\t", row_sep: "\r\n") )
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data = CSV.open(@path, col_sep: "\t", row_sep: "\r\n") do |csv|
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csv.read
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end
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assert_equal(@expected, data)
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data = CSV.open(@path, col_sep: "\t", row_sep: "\r\n") do |csv|
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csv.readlines
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end
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assert_equal(@expected, data)
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end
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def test_table
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table = CSV.table(@path, col_sep: "\t", row_sep: "\r\n")
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assert_instance_of(CSV::Table, table)
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assert_equal([[:"1", :"2", :"3"], [4, 5, nil]], table.to_a)
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end
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def test_shift # aliased as gets() and readline()
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CSV.open(@path, "r+", col_sep: "\t", row_sep: "\r\n") do |csv|
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assert_equal(@expected.shift, csv.shift)
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assert_equal(@expected.shift, csv.shift)
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assert_equal(nil, csv.shift)
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end
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end
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### Test Write Interface ###
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def test_generate
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str = CSV.generate do |csv| # default empty String
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assert_instance_of(CSV, csv)
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assert_equal(csv, csv << [1, 2, 3])
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assert_equal(csv, csv << [4, nil, 5])
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end
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assert_not_nil(str)
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assert_instance_of(String, str)
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assert_equal("1,2,3\n4,,5\n", str)
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CSV.generate(str) do |csv| # appending to a String
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assert_equal(csv, csv << ["last", %Q{"row"}])
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end
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assert_equal(%Q{1,2,3\n4,,5\nlast,"""row"""\n}, str)
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end
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def test_generate_line
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line = CSV.generate_line(%w{1 2 3}, col_sep: ";")
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assert_not_nil(line)
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assert_instance_of(String, line)
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assert_equal("1;2;3\n", line)
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# shortcut interface
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line = %w{1 2 3}.to_csv(col_sep: ";")
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assert_not_nil(line)
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assert_instance_of(String, line)
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assert_equal("1;2;3\n", line)
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end
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def test_write_header_detection
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File.unlink(@path)
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headers = %w{a b c}
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CSV.open(@path, "w", headers: true) do |csv|
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csv << headers
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csv << %w{1 2 3}
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assert_equal(headers, csv.instance_variable_get(:@headers))
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end
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end
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def test_write_lineno
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File.unlink(@path)
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CSV.open(@path, "w") do |csv|
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lines = 20
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lines.times { csv << %w{a b c} }
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assert_equal(lines, csv.lineno)
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end
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end
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def test_write_hash
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File.unlink(@path)
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lines = [{a: 1, b: 2, c: 3}, {a: 4, b: 5, c: 6}]
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CSV.open( @path, "w", headers: true,
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header_converters: :symbol ) do |csv|
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csv << lines.first.keys
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lines.each { |line| csv << line }
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end
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CSV.open( @path, "w", headers: true,
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converters: :all,
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header_converters: :symbol ) do |csv|
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csv.each { |line| assert_equal(lines.shift, line.to_hash) }
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end
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end
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def test_write_hash_with_headers_array
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File.unlink(@path)
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lines = [{a: 1, b: 2, c: 3}, {a: 4, b: 5, c: 6}]
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CSV.open(@path, "w", headers: [:b, :a, :c]) do |csv|
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lines.each { |line| csv << line }
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end
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# test writing fields in the correct order
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File.open(@path, "r") do |f|
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assert_equal("2,1,3", f.gets.strip)
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assert_equal("5,4,6", f.gets.strip)
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end
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# test reading CSV with headers
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CSV.open( @path, "r", headers: [:b, :a, :c],
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converters: :all ) do |csv|
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csv.each { |line| assert_equal(lines.shift, line.to_hash) }
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end
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end
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def test_write_hash_with_headers_string
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File.unlink(@path)
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lines = [{"a" => 1, "b" => 2, "c" => 3}, {"a" => 4, "b" => 5, "c" => 6}]
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CSV.open(@path, "w", headers: "b|a|c", col_sep: "|") do |csv|
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lines.each { |line| csv << line }
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end
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# test writing fields in the correct order
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File.open(@path, "r") do |f|
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assert_equal("2|1|3", f.gets.strip)
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assert_equal("5|4|6", f.gets.strip)
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end
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# test reading CSV with headers
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CSV.open( @path, "r", headers: "b|a|c",
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col_sep: "|",
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converters: :all ) do |csv|
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csv.each { |line| assert_equal(lines.shift, line.to_hash) }
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end
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end
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def test_write_headers
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File.unlink(@path)
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lines = [{"a" => 1, "b" => 2, "c" => 3}, {"a" => 4, "b" => 5, "c" => 6}]
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CSV.open( @path, "w", headers: "b|a|c",
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write_headers: true,
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col_sep: "|" ) do |csv|
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lines.each { |line| csv << line }
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end
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# test writing fields in the correct order
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File.open(@path, "r") do |f|
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assert_equal("b|a|c", f.gets.strip)
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assert_equal("2|1|3", f.gets.strip)
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assert_equal("5|4|6", f.gets.strip)
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end
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# test reading CSV with headers
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CSV.open( @path, "r", headers: true,
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col_sep: "|",
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converters: :all ) do |csv|
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csv.each { |line| assert_equal(lines.shift, line.to_hash) }
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end
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end
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def test_append # aliased add_row() and puts()
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File.unlink(@path)
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CSV.open(@path, "w", col_sep: "\t", row_sep: "\r\n") do |csv|
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@expected.each { |row| csv << row }
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end
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test_shift
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# same thing using CSV::Row objects
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File.unlink(@path)
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CSV.open(@path, "w", col_sep: "\t", row_sep: "\r\n") do |csv|
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@expected.each { |row| csv << CSV::Row.new(Array.new, row) }
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end
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test_shift
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end
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### Test Read and Write Interface ###
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def test_filter
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assert_respond_to(CSV, :filter)
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expected = [[1, 2, 3], [4, 5]]
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CSV.filter( "1;2;3\n4;5\n", (result = String.new),
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in_col_sep: ";", out_col_sep: ",",
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converters: :all ) do |row|
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assert_equal(row, expected.shift)
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row.map! { |n| n * 2 }
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row << "Added\r"
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end
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assert_equal("2,4,6,\"Added\r\"\n8,10,\"Added\r\"\n", result)
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end
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def test_instance
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csv = String.new
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first = nil
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assert_nothing_raised(Exception) do
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first = CSV.instance(csv, col_sep: ";")
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first << %w{a b c}
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end
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assert_equal("a;b;c\n", csv)
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second = nil
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assert_nothing_raised(Exception) do
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second = CSV.instance(csv, col_sep: ";")
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second << [1, 2, 3]
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end
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assert_equal(first.object_id, second.object_id)
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assert_equal("a;b;c\n1;2;3\n", csv)
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# shortcuts
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assert_equal(STDOUT, CSV.instance.instance_eval { @io })
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assert_equal(STDOUT, CSV { |new_csv| new_csv.instance_eval { @io } })
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end
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end
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