diff options
Diffstat (limited to 'test/csv/tc_headers.rb')
| -rw-r--r-- | test/csv/tc_headers.rb | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/test/csv/tc_headers.rb b/test/csv/tc_headers.rb new file mode 100644 index 0000000000..74e2f54ad4 --- /dev/null +++ b/test/csv/tc_headers.rb @@ -0,0 +1,261 @@ +#!/usr/local/bin/ruby -w + +# tc_headers.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 TestCSVHeaders < Test::Unit::TestCase + def setup + @data = <<-END_CSV.gsub(/^\s+/, "") + first,second,third + A,B,C + 1,2,3 + END_CSV + end + + def test_first_row + [:first_row, true].each do |setting| # two names for the same setting + # activate headers + csv = nil + assert_nothing_raised(Exception) do + csv = CSV.parse(@data, :headers => setting) + end + + # first data row - skipping headers + row = csv[0] + assert_not_nil(row) + assert_instance_of(CSV::Row, row) + assert_equal([%w{first A}, %w{second B}, %w{third C}], row.to_a) + + # second data row + row = csv[1] + assert_not_nil(row) + assert_instance_of(CSV::Row, row) + assert_equal([%w{first 1}, %w{second 2}, %w{third 3}], row.to_a) + + # empty + assert_nil(csv[2]) + end + end + + def test_array_of_headers + # activate headers + csv = nil + assert_nothing_raised(Exception) do + csv = CSV.parse(@data, :headers => [:my, :new, :headers]) + end + + # first data row - skipping headers + row = csv[0] + assert_not_nil(row) + assert_instance_of(CSV::Row, row) + assert_equal( [[:my, "first"], [:new, "second"], [:headers, "third"]], + row.to_a ) + + # second data row + row = csv[1] + assert_not_nil(row) + assert_instance_of(CSV::Row, row) + assert_equal([[:my, "A"], [:new, "B"], [:headers, "C"]], row.to_a) + + # third data row + row = csv[2] + assert_not_nil(row) + assert_instance_of(CSV::Row, row) + assert_equal([[:my, "1"], [:new, "2"], [:headers, "3"]], row.to_a) + + # empty + assert_nil(csv[3]) + + # with return and convert + assert_nothing_raised(Exception) do + csv = CSV.parse(@data, :headers => [:my, :new, :headers], + :return_headers => true, + :header_converters => lambda { |h| h.to_s } ) + end + row = csv[0] + assert_not_nil(row) + assert_instance_of(CSV::Row, row) + assert_equal([["my", :my], ["new", :new], ["headers", :headers]], row.to_a) + assert(row.header_row?) + assert(!row.field_row?) + end + + def test_csv_header_string + # activate headers + csv = nil + assert_nothing_raised(Exception) do + csv = CSV.parse(@data, :headers => "my,new,headers") + end + + # first data row - skipping headers + row = csv[0] + assert_not_nil(row) + assert_instance_of(CSV::Row, row) + assert_equal([%w{my first}, %w{new second}, %w{headers third}], row.to_a) + + # second data row + row = csv[1] + assert_not_nil(row) + assert_instance_of(CSV::Row, row) + assert_equal([%w{my A}, %w{new B}, %w{headers C}], row.to_a) + + # third data row + row = csv[2] + assert_not_nil(row) + assert_instance_of(CSV::Row, row) + assert_equal([%w{my 1}, %w{new 2}, %w{headers 3}], row.to_a) + + # empty + assert_nil(csv[3]) + + # with return and convert + assert_nothing_raised(Exception) do + csv = CSV.parse(@data, :headers => "my,new,headers", + :return_headers => true, + :header_converters => :symbol ) + end + row = csv[0] + assert_not_nil(row) + assert_instance_of(CSV::Row, row) + assert_equal([[:my, "my"], [:new, "new"], [:headers, "headers"]], row.to_a) + assert(row.header_row?) + assert(!row.field_row?) + end + + def test_return_headers + # activate headers and request they are returned + csv = nil + assert_nothing_raised(Exception) do + csv = CSV.parse(@data, :headers => true, :return_headers => true) + end + + # header row + row = csv[0] + assert_not_nil(row) + assert_instance_of(CSV::Row, row) + assert_equal( [%w{first first}, %w{second second}, %w{third third}], + row.to_a ) + assert(row.header_row?) + assert(!row.field_row?) + + # first data row - skipping headers + row = csv[1] + assert_not_nil(row) + assert_instance_of(CSV::Row, row) + assert_equal([%w{first A}, %w{second B}, %w{third C}], row.to_a) + assert(!row.header_row?) + assert(row.field_row?) + + # second data row + row = csv[2] + assert_not_nil(row) + assert_instance_of(CSV::Row, row) + assert_equal([%w{first 1}, %w{second 2}, %w{third 3}], row.to_a) + assert(!row.header_row?) + assert(row.field_row?) + + # empty + assert_nil(csv[3]) + end + + def test_converters + # create test data where headers and fields look alike + data = <<-END_MATCHING_CSV.gsub(/^\s+/, "") + 1,2,3 + 1,2,3 + END_MATCHING_CSV + + # normal converters do not affect headers + csv = CSV.parse( data, :headers => true, + :return_headers => true, + :converters => :numeric ) + assert_equal([%w{1 1}, %w{2 2}, %w{3 3}], csv[0].to_a) + assert_equal([["1", 1], ["2", 2], ["3", 3]], csv[1].to_a) + assert_nil(csv[2]) + + # header converters do affect headers (only) + assert_nothing_raised(Exception) do + csv = CSV.parse( data, :headers => true, + :return_headers => true, + :converters => :numeric, + :header_converters => :symbol ) + end + assert_equal([[:"1", "1"], [:"2", "2"], [:"3", "3"]], csv[0].to_a) + assert_equal([[:"1", 1], [:"2", 2], [:"3", 3]], csv[1].to_a) + assert_nil(csv[2]) + end + + def test_builtin_downcase_converter + csv = CSV.parse( "One,TWO Three", :headers => true, + :return_headers => true, + :header_converters => :downcase ) + assert_equal(%w{one two\ three}, csv.headers) + end + + def test_builtin_symbol_converter + csv = CSV.parse( "One,TWO Three", :headers => true, + :return_headers => true, + :header_converters => :symbol ) + assert_equal([:one, :two_three], csv.headers) + end + + def test_custom_converter + converter = lambda { |header| header.tr(" ", "_") } + csv = CSV.parse( "One,TWO Three", + :headers => true, + :return_headers => true, + :header_converters => converter ) + assert_equal(%w{One TWO_Three}, csv.headers) + end + + def test_table_support + csv = nil + assert_nothing_raised(Exception) do + csv = CSV.parse(@data, :headers => true) + end + + assert_instance_of(CSV::Table, csv) + end + + def test_skip_blanks + @data = <<-END_CSV.gsub(/^ +/, "") + + + A,B,C + + 1,2,3 + + + + END_CSV + + expected = [%w[1 2 3]] + CSV.parse(@data, :headers => true, :skip_blanks => true) do |row| + assert_equal(expected.shift, row.fields) + end + + expected = [%w[A B C], %w[1 2 3]] + CSV.parse( @data, + :headers => true, + :return_headers => true, + :skip_blanks => true ) do |row| + assert_equal(expected.shift, row.fields) + end + end + + def test_blank_row_bug_fix + @data += "\n#{@data}" # add a blank row + + # ensure that everything returned is a Row object + CSV.parse(@data, :headers => true) do |row| + assert_instance_of(CSV::Row, row) + end + end +end |