1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
|
#!/usr/bin/env ruby -w
# encoding: UTF-8
# tc_interface.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 TestCSVInterface < Test::Unit::TestCase
def setup
@path = File.join(File.dirname(__FILE__), "temp_test_data.csv")
File.open(@path, "wb") do |file|
file << "1\t2\t3\r\n"
file << "4\t5\r\n"
end
@expected = [%w{1 2 3}, %w{4 5}]
end
def teardown
File.unlink(@path)
end
### Test Read Interface ###
def test_foreach
CSV.foreach(@path, col_sep: "\t", row_sep: "\r\n") do |row|
assert_equal(@expected.shift, row)
end
end
def test_open_and_close
csv = CSV.open(@path, "r+", col_sep: "\t", row_sep: "\r\n")
assert_not_nil(csv)
assert_instance_of(CSV, csv)
assert_equal(false, csv.closed?)
csv.close
assert(csv.closed?)
ret = CSV.open(@path) do |new_csv|
csv = new_csv
assert_instance_of(CSV, new_csv)
"Return value."
end
assert(csv.closed?)
assert_equal("Return value.", ret)
end
def test_parse
data = File.binread(@path)
assert_equal( @expected,
CSV.parse(data, col_sep: "\t", row_sep: "\r\n") )
CSV.parse(data, col_sep: "\t", row_sep: "\r\n") do |row|
assert_equal(@expected.shift, row)
end
end
def test_parse_line
row = CSV.parse_line("1;2;3", col_sep: ";")
assert_not_nil(row)
assert_instance_of(Array, row)
assert_equal(%w{1 2 3}, row)
# shortcut interface
row = "1;2;3".parse_csv(col_sep: ";")
assert_not_nil(row)
assert_instance_of(Array, row)
assert_equal(%w{1 2 3}, row)
end
def test_read_and_readlines
assert_equal( @expected,
CSV.read(@path, col_sep: "\t", row_sep: "\r\n") )
assert_equal( @expected,
CSV.readlines(@path, col_sep: "\t", row_sep: "\r\n") )
data = CSV.open(@path, col_sep: "\t", row_sep: "\r\n") do |csv|
csv.read
end
assert_equal(@expected, data)
data = CSV.open(@path, col_sep: "\t", row_sep: "\r\n") do |csv|
csv.readlines
end
assert_equal(@expected, data)
end
def test_table
table = CSV.table(@path, col_sep: "\t", row_sep: "\r\n")
assert_instance_of(CSV::Table, table)
assert_equal([[:"1", :"2", :"3"], [4, 5, nil]], table.to_a)
end
def test_shift # aliased as gets() and readline()
CSV.open(@path, "rb+", col_sep: "\t", row_sep: "\r\n") do |csv|
assert_equal(@expected.shift, csv.shift)
assert_equal(@expected.shift, csv.shift)
assert_equal(nil, csv.shift)
end
end
### Test Write Interface ###
def test_generate
str = CSV.generate do |csv| # default empty String
assert_instance_of(CSV, csv)
assert_equal(csv, csv << [1, 2, 3])
assert_equal(csv, csv << [4, nil, 5])
end
assert_not_nil(str)
assert_instance_of(String, str)
assert_equal("1,2,3\n4,,5\n", str)
CSV.generate(str) do |csv| # appending to a String
assert_equal(csv, csv << ["last", %Q{"row"}])
end
assert_equal(%Q{1,2,3\n4,,5\nlast,"""row"""\n}, str)
end
def test_generate_line
line = CSV.generate_line(%w{1 2 3}, col_sep: ";")
assert_not_nil(line)
assert_instance_of(String, line)
assert_equal("1;2;3\n", line)
# shortcut interface
line = %w{1 2 3}.to_csv(col_sep: ";")
assert_not_nil(line)
assert_instance_of(String, line)
assert_equal("1;2;3\n", line)
end
def test_write_header_detection
File.unlink(@path)
headers = %w{a b c}
CSV.open(@path, "w", headers: true) do |csv|
csv << headers
csv << %w{1 2 3}
assert_equal(headers, csv.instance_variable_get(:@headers))
end
end
def test_write_lineno
File.unlink(@path)
CSV.open(@path, "w") do |csv|
lines = 20
lines.times { csv << %w{a b c} }
assert_equal(lines, csv.lineno)
end
end
def test_write_hash
File.unlink(@path)
lines = [{a: 1, b: 2, c: 3}, {a: 4, b: 5, c: 6}]
CSV.open( @path, "w", headers: true,
header_converters: :symbol ) do |csv|
csv << lines.first.keys
lines.each { |line| csv << line }
end
CSV.open( @path, "w", headers: true,
converters: :all,
header_converters: :symbol ) do |csv|
csv.each { |line| assert_equal(lines.shift, line.to_hash) }
end
end
def test_write_hash_with_headers_array
File.unlink(@path)
lines = [{a: 1, b: 2, c: 3}, {a: 4, b: 5, c: 6}]
CSV.open(@path, "wb", headers: [:b, :a, :c]) do |csv|
lines.each { |line| csv << line }
end
# test writing fields in the correct order
File.open(@path, "rb") do |f|
assert_equal("2,1,3", f.gets.strip)
assert_equal("5,4,6", f.gets.strip)
end
# test reading CSV with headers
CSV.open( @path, "rb", headers: [:b, :a, :c],
converters: :all ) do |csv|
csv.each { |line| assert_equal(lines.shift, line.to_hash) }
end
end
def test_write_hash_with_headers_string
File.unlink(@path)
lines = [{"a" => 1, "b" => 2, "c" => 3}, {"a" => 4, "b" => 5, "c" => 6}]
CSV.open(@path, "wb", headers: "b|a|c", col_sep: "|") do |csv|
lines.each { |line| csv << line }
end
# test writing fields in the correct order
File.open(@path, "rb") do |f|
assert_equal("2|1|3", f.gets.strip)
assert_equal("5|4|6", f.gets.strip)
end
# test reading CSV with headers
CSV.open( @path, "rb", headers: "b|a|c",
col_sep: "|",
converters: :all ) do |csv|
csv.each { |line| assert_equal(lines.shift, line.to_hash) }
end
end
def test_write_headers
File.unlink(@path)
lines = [{"a" => 1, "b" => 2, "c" => 3}, {"a" => 4, "b" => 5, "c" => 6}]
CSV.open( @path, "wb", headers: "b|a|c",
write_headers: true,
col_sep: "|" ) do |csv|
lines.each { |line| csv << line }
end
# test writing fields in the correct order
File.open(@path, "rb") do |f|
assert_equal("b|a|c", f.gets.strip)
assert_equal("2|1|3", f.gets.strip)
assert_equal("5|4|6", f.gets.strip)
end
# test reading CSV with headers
CSV.open( @path, "rb", headers: true,
col_sep: "|",
converters: :all ) do |csv|
csv.each { |line| assert_equal(lines.shift, line.to_hash) }
end
end
def test_append # aliased add_row() and puts()
File.unlink(@path)
CSV.open(@path, "wb", col_sep: "\t", row_sep: "\r\n") do |csv|
@expected.each { |row| csv << row }
end
test_shift
# same thing using CSV::Row objects
File.unlink(@path)
CSV.open(@path, "wb", col_sep: "\t", row_sep: "\r\n") do |csv|
@expected.each { |row| csv << CSV::Row.new(Array.new, row) }
end
test_shift
end
### Test Read and Write Interface ###
def test_filter
assert_respond_to(CSV, :filter)
expected = [[1, 2, 3], [4, 5]]
CSV.filter( "1;2;3\n4;5\n", (result = String.new),
in_col_sep: ";", out_col_sep: ",",
converters: :all ) do |row|
assert_equal(row, expected.shift)
row.map! { |n| n * 2 }
row << "Added\r"
end
assert_equal("2,4,6,\"Added\r\"\n8,10,\"Added\r\"\n", result)
end
def test_instance
csv = String.new
first = nil
assert_nothing_raised(Exception) do
first = CSV.instance(csv, col_sep: ";")
first << %w{a b c}
end
assert_equal("a;b;c\n", csv)
second = nil
assert_nothing_raised(Exception) do
second = CSV.instance(csv, col_sep: ";")
second << [1, 2, 3]
end
assert_equal(first.object_id, second.object_id)
assert_equal("a;b;c\n1;2;3\n", csv)
# shortcuts
assert_equal(STDOUT, CSV.instance.instance_eval { @io })
assert_equal(STDOUT, CSV { |new_csv| new_csv.instance_eval { @io } })
end
end
|
