1 /* PSPP - computes sample statistics.
2 Copyright (C) 2004 Free Software Foundation, Inc.
3 Written by Ben Pfaff <blp@gnu.org>.
5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 This program is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 #include <data/casefile.h>
22 #include <data/fastfile.h>
24 #include <data/case.h>
26 #include <gsl/gsl_randist.h>
27 #include <gsl/gsl_rng.h>
29 #include <language/command.h>
30 #include <language/lexer/lexer.h>
34 static void test_casefile (int pattern, size_t value_cnt, size_t case_cnt);
35 static void get_random_case (struct ccase *, size_t value_cnt,
37 static void write_random_case (struct casefile *cf, size_t case_idx);
38 static void read_and_verify_random_case (struct casefile *cf,
39 struct casereader *reader,
41 static void fail_test (const char *message, ...);
44 cmd_debug_casefile (void)
46 static const size_t sizes[] =
48 1, 2, 3, 4, 5, 6, 7, 14, 15, 16, 17, 31, 55, 73,
49 100, 137, 257, 521, 1031, 2053
55 size_max = sizeof sizes / sizeof *sizes;
56 if (lex_match_id ("SMALL"))
64 return lex_end_of_command ();
66 for (pattern = 0; pattern < 6; pattern++)
70 for (size = sizes; size < sizes + size_max; size++)
74 for (case_cnt = 0; case_cnt <= case_max;
75 case_cnt = (case_cnt * 2) + 1)
76 test_casefile (pattern, *size, case_cnt);
79 printf ("Casefile tests succeeded.\n");
84 test_casefile (int pattern, size_t value_cnt, size_t case_cnt)
87 struct casereader *r1, *r2;
92 rng = gsl_rng_alloc (gsl_rng_mt19937);
93 cf = fastfile_create (value_cnt);
95 casefile_to_disk (cf);
96 for (i = 0; i < case_cnt; i++)
97 write_random_case (cf, i);
100 r1 = casefile_get_reader (cf);
101 r2 = casefile_get_reader (cf);
106 for (i = 0; i < case_cnt; i++)
108 read_and_verify_random_case (cf, r1, i);
109 read_and_verify_random_case (cf, r2, i);
113 for (i = 0; i < case_cnt; i++)
114 read_and_verify_random_case (cf, r1, i);
115 for (i = 0; i < case_cnt; i++)
116 read_and_verify_random_case (cf, r2, i);
121 for (i = j = 0; i < case_cnt; i++)
123 read_and_verify_random_case (cf, r1, i);
124 if (gsl_rng_get (rng) % pattern == 0)
125 read_and_verify_random_case (cf, r2, j++);
126 if (i == case_cnt / 2)
127 casefile_to_disk (cf);
129 for (; j < case_cnt; j++)
130 read_and_verify_random_case (cf, r2, j);
133 if (casereader_read (r1, &c))
134 fail_test ("Casereader 1 not at end of file.");
135 if (casereader_read (r2, &c))
136 fail_test ("Casereader 2 not at end of file.");
138 casereader_destroy (r1);
140 casereader_destroy (r2);
143 r1 = casefile_get_destructive_reader (cf);
144 for (i = 0; i < case_cnt; i++)
146 struct ccase read_case, expected_case;
148 get_random_case (&expected_case, value_cnt, i);
149 if (!casereader_read_xfer (r1, &read_case))
150 fail_test ("Premature end of casefile.");
151 for (j = 0; j < value_cnt; j++)
153 double a = case_num (&read_case, j);
154 double b = case_num (&expected_case, j);
156 fail_test ("Case %lu fails comparison.", (unsigned long) i);
158 case_destroy (&expected_case);
159 case_destroy (&read_case);
161 casereader_destroy (r1);
163 casefile_destroy (cf);
168 get_random_case (struct ccase *c, size_t value_cnt, size_t case_idx)
171 case_create (c, value_cnt);
172 for (i = 0; i < value_cnt; i++)
173 case_data_rw (c, i)->f = case_idx % 257 + i;
177 write_random_case (struct casefile *cf, size_t case_idx)
180 get_random_case (&c, casefile_get_value_cnt (cf), case_idx);
181 casefile_append_xfer (cf, &c);
185 read_and_verify_random_case (struct casefile *cf,
186 struct casereader *reader, size_t case_idx)
188 struct ccase read_case, expected_case;
192 value_cnt = casefile_get_value_cnt (cf);
193 get_random_case (&expected_case, value_cnt, case_idx);
194 if (!casereader_read (reader, &read_case))
195 fail_test ("Premature end of casefile.");
196 for (i = 0; i < value_cnt; i++)
198 double a = case_num (&read_case, i);
199 double b = case_num (&expected_case, i);
201 fail_test ("Case %lu fails comparison.", (unsigned long) case_idx);
203 case_destroy (&read_case);
204 case_destroy (&expected_case);
208 fail_test (const char *message, ...)
212 va_start (args, message);
213 vprintf (message, args);