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/case.h>
24 #include <gsl/gsl_rng.h>
26 #include <language/command.h>
27 #include <language/lexer/lexer.h>
29 static void test_casefile (int pattern, size_t value_cnt, size_t case_cnt);
30 static void get_random_case (struct ccase *, size_t value_cnt,
32 static void write_random_case (struct casefile *cf, size_t case_idx);
33 static void read_and_verify_random_case (struct casefile *cf,
34 struct casereader *reader,
36 static void fail_test (const char *message, ...);
39 cmd_debug_casefile (void)
41 static const size_t sizes[] =
43 1, 2, 3, 4, 5, 6, 7, 14, 15, 16, 17, 31, 55, 73,
44 100, 137, 257, 521, 1031, 2053
50 size_max = sizeof sizes / sizeof *sizes;
51 if (lex_match_id ("SMALL"))
59 return lex_end_of_command ();
61 for (pattern = 0; pattern < 6; pattern++)
65 for (size = sizes; size < sizes + size_max; size++)
69 for (case_cnt = 0; case_cnt <= case_max;
70 case_cnt = (case_cnt * 2) + 1)
71 test_casefile (pattern, *size, case_cnt);
74 printf ("Casefile tests succeeded.\n");
79 test_casefile (int pattern, size_t value_cnt, size_t case_cnt)
82 struct casereader *r1, *r2;
87 rng = gsl_rng_alloc (gsl_rng_mt19937);
88 cf = casefile_create (value_cnt);
90 casefile_to_disk (cf);
91 for (i = 0; i < case_cnt; i++)
92 write_random_case (cf, i);
95 r1 = casefile_get_reader (cf);
96 r2 = casefile_get_reader (cf);
101 for (i = 0; i < case_cnt; i++)
103 read_and_verify_random_case (cf, r1, i);
104 read_and_verify_random_case (cf, r2, i);
108 for (i = 0; i < case_cnt; i++)
109 read_and_verify_random_case (cf, r1, i);
110 for (i = 0; i < case_cnt; i++)
111 read_and_verify_random_case (cf, r2, i);
116 for (i = j = 0; i < case_cnt; i++)
118 read_and_verify_random_case (cf, r1, i);
119 if (gsl_rng_get (rng) % pattern == 0)
120 read_and_verify_random_case (cf, r2, j++);
121 if (i == case_cnt / 2)
122 casefile_to_disk (cf);
124 for (; j < case_cnt; j++)
125 read_and_verify_random_case (cf, r2, j);
128 if (casereader_read (r1, &c))
129 fail_test ("Casereader 1 not at end of file.");
130 if (casereader_read (r2, &c))
131 fail_test ("Casereader 2 not at end of file.");
133 casereader_destroy (r1);
135 casereader_destroy (r2);
138 r1 = casefile_get_destructive_reader (cf);
139 for (i = 0; i < case_cnt; i++)
141 struct ccase read_case, expected_case;
143 get_random_case (&expected_case, value_cnt, i);
144 if (!casereader_read_xfer (r1, &read_case))
145 fail_test ("Premature end of casefile.");
146 for (j = 0; j < value_cnt; j++)
148 double a = case_num (&read_case, j);
149 double b = case_num (&expected_case, j);
151 fail_test ("Case %lu fails comparison.", (unsigned long) i);
153 case_destroy (&expected_case);
154 case_destroy (&read_case);
156 casereader_destroy (r1);
158 casefile_destroy (cf);
163 get_random_case (struct ccase *c, size_t value_cnt, size_t case_idx)
166 case_create (c, value_cnt);
167 for (i = 0; i < value_cnt; i++)
168 case_data_rw (c, i)->f = case_idx % 257 + i;
172 write_random_case (struct casefile *cf, size_t case_idx)
175 get_random_case (&c, casefile_get_value_cnt (cf), case_idx);
176 casefile_append_xfer (cf, &c);
180 read_and_verify_random_case (struct casefile *cf,
181 struct casereader *reader, size_t case_idx)
183 struct ccase read_case, expected_case;
187 value_cnt = casefile_get_value_cnt (cf);
188 get_random_case (&expected_case, value_cnt, case_idx);
189 if (!casereader_read (reader, &read_case))
190 fail_test ("Premature end of casefile.");
191 for (i = 0; i < value_cnt; i++)
193 double a = case_num (&read_case, i);
194 double b = case_num (&expected_case, i);
196 fail_test ("Case %lu fails comparison.", (unsigned long) case_idx);
198 case_destroy (&read_case);
199 case_destroy (&expected_case);
203 fail_test (const char *message, ...)
207 va_start (args, message);
208 vprintf (message, args);