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#!/usr/bin/env ruby -w
# encoding: UTF-8
# tc_data_converters.rb
#
# Created by James Edward Gray II on 2005-10-31.
# Copyright 2005 James Edward Gray II. You can redistribute or modify this code
# under the terms of Ruby's license.
require_relative "base"
class TestCSV::DataConverters < TestCSV
extend DifferentOFS
def setup
super
@data = "Numbers,:integer,1,:float,3.015"
@parser = CSV.new(@data)
@custom = lambda { |field| field =~ /\A:(\S.*?)\s*\Z/ ? $1.to_sym : field }
@win_safe_time_str = Time.now.strftime("%a %b %d %H:%M:%S %Y")
end
def test_builtin_integer_converter
# does convert
[-5, 1, 10000000000].each do |n|
assert_equal(n, CSV::Converters[:integer][n.to_s])
end
# does not convert
(%w{junk 1.0} + [""]).each do |str|
assert_equal(str, CSV::Converters[:integer][str])
end
end
def test_builtin_float_converter
# does convert
[-5.1234, 0, 2.3e-11].each do |n|
assert_equal(n, CSV::Converters[:float][n.to_s])
end
# does not convert
(%w{junk 1..0 .015F} + [""]).each do |str|
assert_equal(str, CSV::Converters[:float][str])
end
end
def test_builtin_date_converter
# does convert
assert_instance_of(
Date,
CSV::Converters[:date][@win_safe_time_str.sub(/\d+:\d+:\d+ /, "")]
)
# does not convert
assert_instance_of(String, CSV::Converters[:date]["junk"])
end
def test_builtin_date_time_converter
# does convert
assert_instance_of( DateTime,
CSV::Converters[:date_time][@win_safe_time_str] )
# does not convert
assert_instance_of(String, CSV::Converters[:date_time]["junk"])
end
def test_convert_with_builtin_integer
# setup parser...
assert_respond_to(@parser, :convert)
assert_nothing_raised(Exception) { @parser.convert(:integer) }
# and use
assert_equal(["Numbers", ":integer", 1, ":float", "3.015"], @parser.shift)
end
def test_convert_with_builtin_float
# setup parser...
assert_respond_to(@parser, :convert)
assert_nothing_raised(Exception) { @parser.convert(:float) }
# and use
assert_equal(["Numbers", ":integer", 1.0, ":float", 3.015], @parser.shift)
end
def test_convert_order_float_integer
# floats first, then integers...
assert_nothing_raised(Exception) do
@parser.convert(:float)
@parser.convert(:integer)
end
# gets us nothing but floats
assert_equal( [String, String, Float, String, Float],
@parser.shift.map { |field| field.class } )
end
def test_convert_order_integer_float
# integers have precendance...
assert_nothing_raised(Exception) do
@parser.convert(:integer)
@parser.convert(:float)
end
# gives us proper number conversion
assert_equal( [String, String, Fixnum, String, Float],
@parser.shift.map { |field| field.class } )
end
def test_builtin_numeric_combo_converter
# setup parser...
assert_nothing_raised(Exception) { @parser.convert(:numeric) }
# and use
assert_equal( [String, String, Fixnum, String, Float],
@parser.shift.map { |field| field.class } )
end
def test_builtin_all_nested_combo_converter
# setup parser...
@data << ",#{@win_safe_time_str}" # add a DateTime field
@parser = CSV.new(@data) # reset parser
assert_nothing_raised(Exception) { @parser.convert(:all) }
# and use
assert_equal( [String, String, Fixnum, String, Float, DateTime],
@parser.shift.map { |field| field.class } )
end
def test_convert_with_custom_code
# define custom converter...
assert_nothing_raised(Exception) do
@parser.convert { |field| field =~ /\A:(\S.*?)\s*\Z/ ? $1.to_sym : field }
end
# and use
assert_equal(["Numbers", :integer, "1", :float, "3.015"], @parser.shift)
end
def test_convert_with_custom_code_mix
# mix built-in and custom...
assert_nothing_raised(Exception) { @parser.convert(:numeric) }
assert_nothing_raised(Exception) { @parser.convert(&@custom) }
# and use
assert_equal(["Numbers", :integer, 1, :float, 3.015], @parser.shift)
end
def test_convert_with_custom_code_using_field_info
# define custom converter that uses field information...
assert_nothing_raised(Exception) do
@parser.convert do |field, info|
assert_equal(1, info.line)
info.index == 4 ? Float(field).floor : field
end
end
# and use
assert_equal(["Numbers", ":integer", "1", ":float", 3], @parser.shift)
end
def test_convert_with_custom_code_using_field_info_header
@parser = CSV.new(@data, headers: %w{one two three four five})
# define custom converter that uses field header information...
assert_nothing_raised(Exception) do
@parser.convert do |field, info|
info.header == "three" ? Integer(field) * 100 : field
end
end
# and use
assert_equal( ["Numbers", ":integer", 100, ":float", "3.015"],
@parser.shift.fields )
end
def test_shortcut_interface
assert_equal( ["Numbers", ":integer", 1, ":float", 3.015],
CSV.parse_line(@data, converters: :numeric) )
assert_equal( ["Numbers", ":integer", 1, ":float", 3.015],
CSV.parse_line(@data, converters: [:integer, :float]) )
assert_equal( ["Numbers", :integer, 1, :float, 3.015],
CSV.parse_line(@data, converters: [:numeric, @custom]) )
end
def test_unconverted_fields
[ [ @data,
["Numbers", :integer, 1, :float, 3.015],
%w{Numbers :integer 1 :float 3.015} ],
["\n", Array.new, Array.new] ].each do |test, fields, unconverted|
row = nil
assert_nothing_raised(Exception) do
row = CSV.parse_line( test,
converters: [:numeric, @custom],
unconverted_fields: true )
end
assert_not_nil(row)
assert_equal(fields, row)
assert_respond_to(row, :unconverted_fields)
assert_equal(unconverted, row.unconverted_fields)
end
data = <<-END_CSV.gsub(/^\s+/, "")
first,second,third
1,2,3
END_CSV
row = nil
assert_nothing_raised(Exception) do
row = CSV.parse_line( data,
converters: :numeric,
unconverted_fields: true,
headers: :first_row )
end
assert_not_nil(row)
assert_equal([["first", 1], ["second", 2], ["third", 3]], row.to_a)
assert_respond_to(row, :unconverted_fields)
assert_equal(%w{1 2 3}, row.unconverted_fields)
assert_nothing_raised(Exception) do
row = CSV.parse_line( data,
converters: :numeric,
unconverted_fields: true,
headers: :first_row,
return_headers: true )
end
assert_not_nil(row)
assert_equal( [%w{first first}, %w{second second}, %w{third third}],
row.to_a )
assert_respond_to(row, :unconverted_fields)
assert_equal(%w{first second third}, row.unconverted_fields)
assert_nothing_raised(Exception) do
row = CSV.parse_line( data,
converters: :numeric,
unconverted_fields: true,
headers: :first_row,
return_headers: true,
header_converters: :symbol )
end
assert_not_nil(row)
assert_equal( [[:first, "first"], [:second, "second"], [:third, "third"]],
row.to_a )
assert_respond_to(row, :unconverted_fields)
assert_equal(%w{first second third}, row.unconverted_fields)
assert_nothing_raised(Exception) do
row = CSV.parse_line( data,
converters: :numeric,
unconverted_fields: true,
headers: %w{my new headers},
return_headers: true,
header_converters: :symbol )
end
assert_not_nil(row)
assert_equal( [[:my, "my"], [:new, "new"], [:headers, "headers"]],
row.to_a )
assert_respond_to(row, :unconverted_fields)
assert_equal(Array.new, row.unconverted_fields)
end
end
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