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#!/usr/bin/env ruby -w
# encoding: UTF-8
# tc_row.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 "test/unit"
require "csv"
class TestCSVRow < Test::Unit::TestCase
def setup
@row = CSV::Row.new(%w{A B C A A}, [1, 2, 3, 4])
end
def test_initialize
# basic
row = CSV::Row.new(%w{A B C}, [1, 2, 3])
assert_not_nil(row)
assert_instance_of(CSV::Row, row)
assert_equal([["A", 1], ["B", 2], ["C", 3]], row.to_a)
# missing headers
row = CSV::Row.new(%w{A}, [1, 2, 3])
assert_not_nil(row)
assert_instance_of(CSV::Row, row)
assert_equal([["A", 1], [nil, 2], [nil, 3]], row.to_a)
# missing fields
row = CSV::Row.new(%w{A B C}, [1, 2])
assert_not_nil(row)
assert_instance_of(CSV::Row, row)
assert_equal([["A", 1], ["B", 2], ["C", nil]], row.to_a)
end
def test_row_type
# field rows
row = CSV::Row.new(%w{A B C}, [1, 2, 3]) # implicit
assert(!row.header_row?)
assert(row.field_row?)
row = CSV::Row.new(%w{A B C}, [1, 2, 3], false) # explicit
assert(!row.header_row?)
assert(row.field_row?)
# header row
row = CSV::Row.new(%w{A B C}, [1, 2, 3], true)
assert(row.header_row?)
assert(!row.field_row?)
end
def test_headers
assert_equal(%w{A B C A A}, @row.headers)
end
def test_field
# by name
assert_equal(2, @row.field("B"))
assert_equal(2, @row["B"]) # alias
# by index
assert_equal(3, @row.field(2))
# missing
assert_nil(@row.field("Missing"))
assert_nil(@row.field(10))
# minimum index
assert_equal(1, @row.field("A"))
assert_equal(1, @row.field("A", 0))
assert_equal(4, @row.field("A", 1))
assert_equal(4, @row.field("A", 2))
assert_equal(4, @row.field("A", 3))
assert_equal(nil, @row.field("A", 4))
assert_equal(nil, @row.field("A", 5))
end
def test_set_field
# set field by name
assert_equal(100, @row["A"] = 100)
# set field by index
assert_equal(300, @row[3] = 300)
# set field by name and minimum index
assert_equal([:a, :b, :c], @row["A", 4] = [:a, :b, :c])
# verify the changes
assert_equal( [ ["A", 100],
["B", 2],
["C", 3],
["A", 300],
["A", [:a, :b, :c]] ], @row.to_a )
# assigning an index past the end
assert_equal("End", @row[10] = "End")
assert_equal( [ ["A", 100],
["B", 2],
["C", 3],
["A", 300],
["A", [:a, :b, :c]],
[nil, nil],
[nil, nil],
[nil, nil],
[nil, nil],
[nil, nil],
[nil, "End"] ], @row.to_a )
# assigning a new field by header
assert_equal("New", @row[:new] = "New")
assert_equal( [ ["A", 100],
["B", 2],
["C", 3],
["A", 300],
["A", [:a, :b, :c]],
[nil, nil],
[nil, nil],
[nil, nil],
[nil, nil],
[nil, nil],
[nil, "End"],
[:new, "New"] ], @row.to_a )
end
def test_append
# add a value
assert_equal(@row, @row << "Value")
assert_equal( [ ["A", 1],
["B", 2],
["C", 3],
["A", 4],
["A", nil],
[nil, "Value"] ], @row.to_a )
# add a pair
assert_equal(@row, @row << %w{Header Field})
assert_equal( [ ["A", 1],
["B", 2],
["C", 3],
["A", 4],
["A", nil],
[nil, "Value"],
%w{Header Field} ], @row.to_a )
# a pair with Hash syntax
assert_equal(@row, @row << {key: :value})
assert_equal( [ ["A", 1],
["B", 2],
["C", 3],
["A", 4],
["A", nil],
[nil, "Value"],
%w{Header Field},
[:key, :value] ], @row.to_a )
# multiple fields at once
assert_equal(@row, @row.push(100, 200, [:last, 300]))
assert_equal( [ ["A", 1],
["B", 2],
["C", 3],
["A", 4],
["A", nil],
[nil, "Value"],
%w{Header Field},
[:key, :value],
[nil, 100],
[nil, 200],
[:last, 300] ], @row.to_a )
end
def test_delete
# by index
assert_equal(["B", 2], @row.delete(1))
# by header
assert_equal(["C", 3], @row.delete("C"))
# using a block
assert_equal(@row, @row.delete_if { |h, f| h == "A" and not f.nil? })
assert_equal([["A", nil]], @row.to_a)
end
def test_fields
# all fields
assert_equal([1, 2, 3, 4, nil], @row.fields)
# by header
assert_equal([1, 3], @row.fields("A", "C"))
# by index
assert_equal([2, 3, nil], @row.fields(1, 2, 10))
# by both
assert_equal([2, 3, 4], @row.fields("B", "C", 3))
# with minimum indices
assert_equal([2, 3, 4], @row.fields("B", "C", ["A", 3]))
# by header range
assert_equal([2, 3], @row.values_at("B".."C"))
end
def test_index
# basic usage
assert_equal(0, @row.index("A"))
assert_equal(1, @row.index("B"))
assert_equal(2, @row.index("C"))
assert_equal(nil, @row.index("Z"))
# with minimum index
assert_equal(0, @row.index("A"))
assert_equal(0, @row.index("A", 0))
assert_equal(3, @row.index("A", 1))
assert_equal(3, @row.index("A", 2))
assert_equal(3, @row.index("A", 3))
assert_equal(4, @row.index("A", 4))
assert_equal(nil, @row.index("A", 5))
end
def test_queries
# headers
assert(@row.header?("A"))
assert(@row.header?("C"))
assert([email protected]?("Z"))
assert(@row.include?("A")) # alias
# fields
assert(@row.field?(4))
assert(@row.field?(nil))
assert([email protected]?(10))
end
def test_each
# array style
ary = @row.to_a
@row.each do |pair|
assert_equal(ary.first.first, pair.first)
assert_equal(ary.shift.last, pair.last)
end
# hash style
ary = @row.to_a
@row.each do |header, field|
assert_equal(ary.first.first, header)
assert_equal(ary.shift.last, field)
end
# verify that we can chain the call
assert_equal(@row, @row.each { })
end
def test_enumerable
assert_equal( [["A", 1], ["A", 4], ["A", nil]],
@row.select { |pair| pair.first == "A" } )
assert_equal(10, @row.inject(0) { |sum, (header, n)| sum + (n || 0) })
end
def test_to_a
row = CSV::Row.new(%w{A B C}, [1, 2, 3]).to_a
assert_instance_of(Array, row)
row.each do |pair|
assert_instance_of(Array, pair)
assert_equal(2, pair.size)
end
assert_equal([["A", 1], ["B", 2], ["C", 3]], row)
end
def test_to_hash
assert_equal({"A" => nil, "B" => 2, "C" => 3}, @row.to_hash)
end
def test_to_csv
# normal conversion
assert_equal("1,2,3,4,\n", @row.to_csv)
assert_equal("1,2,3,4,\n", @row.to_s) # alias
# with options
assert_equal( "1|2|3|4|\r\n",
@row.to_csv(col_sep: "|", row_sep: "\r\n") )
end
def test_array_delegation
assert([email protected]?, "Row was empty.")
assert_equal([@row.headers.size, @row.fields.size].max, @row.size)
end
def test_inspect_shows_header_field_pairs
str = @row.inspect
@row.each do |header, field|
assert( str.include?("#{header.inspect}:#{field.inspect}"),
"Header field pair not found." )
end
end
def test_inspect_encoding_is_ascii_compatible
assert( Encoding.compatible?( Encoding.find("US-ASCII"),
@row.inspect.encoding ),
"inspect() was not ASCII compatible." )
end
def test_inspect_shows_symbol_headers_as_bare_attributes
str = CSV::Row.new(@row.headers.map { |h| h.to_sym }, @row.fields).inspect
@row.each do |header, field|
assert( str.include?("#{header}:#{field.inspect}"),
"Header field pair not found." )
end
end
end
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