1 /*
2 * Options Visitor unit-tests.
3 *
4 * Copyright (C) 2013 Red Hat, Inc.
5 *
6 * Authors:
7 * Laszlo Ersek <lersek@redhat.com> (based on test-string-output-visitor)
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
10 * See the COPYING file in the top-level directory.
11 */
12
13 #include "qemu/osdep.h"
14
15 #include "qemu/config-file.h" /* qemu_add_opts() */
16 #include "qemu/option.h" /* qemu_opts_parse() */
17 #include "qapi/error.h"
18 #include "qapi/opts-visitor.h" /* opts_visitor_new() */
19 #include "test-qapi-visit.h" /* visit_type_UserDefOptions() */
20
21 static QemuOptsList userdef_opts = {
22 .name = "userdef",
23 .head = QTAILQ_HEAD_INITIALIZER(userdef_opts.head),
24 .desc = { { 0 } } /* validated with OptsVisitor */
25 };
26
27 /* fixture (= glib test case context) and test case manipulation */
28
29 typedef struct OptsVisitorFixture {
30 UserDefOptions *userdef;
31 Error *err;
32 } OptsVisitorFixture;
33
34
35 static void
setup_fixture(OptsVisitorFixture * f,gconstpointer test_data)36 setup_fixture(OptsVisitorFixture *f, gconstpointer test_data)
37 {
38 const char *opts_string = test_data;
39 QemuOpts *opts;
40 Visitor *v;
41
42 opts = qemu_opts_parse(qemu_find_opts("userdef"), opts_string, false,
43 NULL);
44 g_assert(opts != NULL);
45
46 v = opts_visitor_new(opts);
47 visit_type_UserDefOptions(v, NULL, &f->userdef, &f->err);
48 visit_free(v);
49 qemu_opts_del(opts);
50 }
51
52
53 static void
teardown_fixture(OptsVisitorFixture * f,gconstpointer test_data)54 teardown_fixture(OptsVisitorFixture *f, gconstpointer test_data)
55 {
56 qapi_free_UserDefOptions(f->userdef);
57 error_free(f->err);
58 }
59
60
61 static void
add_test(const char * testpath,void (* test_func)(OptsVisitorFixture * f,gconstpointer test_data),gconstpointer test_data)62 add_test(const char *testpath,
63 void (*test_func)(OptsVisitorFixture *f, gconstpointer test_data),
64 gconstpointer test_data)
65 {
66 g_test_add(testpath, OptsVisitorFixture, test_data, setup_fixture,
67 test_func, teardown_fixture);
68 }
69
70 /* test output evaluation */
71
72 static void
expect_ok(OptsVisitorFixture * f,gconstpointer test_data)73 expect_ok(OptsVisitorFixture *f, gconstpointer test_data)
74 {
75 g_assert(f->err == NULL);
76 g_assert(f->userdef != NULL);
77 }
78
79
80 static void
expect_fail(OptsVisitorFixture * f,gconstpointer test_data)81 expect_fail(OptsVisitorFixture *f, gconstpointer test_data)
82 {
83 g_assert(f->err != NULL);
84
85 /* The error message is printed when this test utility is invoked directly
86 * (ie. without gtester) and the --verbose flag is passed:
87 *
88 * tests/test-opts-visitor --verbose
89 */
90 g_test_message("'%s': %s", (const char *)test_data,
91 error_get_pretty(f->err));
92 }
93
94
95 static void
test_value(OptsVisitorFixture * f,gconstpointer test_data)96 test_value(OptsVisitorFixture *f, gconstpointer test_data)
97 {
98 uint64_t magic, bitval;
99 intList *i64;
100 uint64List *u64;
101 uint16List *u16;
102
103 expect_ok(f, test_data);
104
105 magic = 0;
106 for (i64 = f->userdef->i64; i64 != NULL; i64 = i64->next) {
107 g_assert(-16 <= i64->value && i64->value < 64-16);
108 bitval = 1ull << (i64->value + 16);
109 g_assert((magic & bitval) == 0);
110 magic |= bitval;
111 }
112 g_assert(magic == 0xDEADBEEF);
113
114 magic = 0;
115 for (u64 = f->userdef->u64; u64 != NULL; u64 = u64->next) {
116 g_assert(u64->value < 64);
117 bitval = 1ull << u64->value;
118 g_assert((magic & bitval) == 0);
119 magic |= bitval;
120 }
121 g_assert(magic == 0xBADC0FFEE0DDF00DULL);
122
123 magic = 0;
124 for (u16 = f->userdef->u16; u16 != NULL; u16 = u16->next) {
125 g_assert(u16->value < 64);
126 bitval = 1ull << u16->value;
127 g_assert((magic & bitval) == 0);
128 magic |= bitval;
129 }
130 g_assert(magic == 0xD15EA5E);
131 }
132
133
134 static void
expect_i64_min(OptsVisitorFixture * f,gconstpointer test_data)135 expect_i64_min(OptsVisitorFixture *f, gconstpointer test_data)
136 {
137 expect_ok(f, test_data);
138 g_assert(f->userdef->has_i64);
139 g_assert(f->userdef->i64->next == NULL);
140 g_assert(f->userdef->i64->value == INT64_MIN);
141 }
142
143
144 static void
expect_i64_max(OptsVisitorFixture * f,gconstpointer test_data)145 expect_i64_max(OptsVisitorFixture *f, gconstpointer test_data)
146 {
147 expect_ok(f, test_data);
148 g_assert(f->userdef->has_i64);
149 g_assert(f->userdef->i64->next == NULL);
150 g_assert(f->userdef->i64->value == INT64_MAX);
151 }
152
153
154 static void
expect_zero(OptsVisitorFixture * f,gconstpointer test_data)155 expect_zero(OptsVisitorFixture *f, gconstpointer test_data)
156 {
157 expect_ok(f, test_data);
158 g_assert(f->userdef->has_u64);
159 g_assert(f->userdef->u64->next == NULL);
160 g_assert(f->userdef->u64->value == 0);
161 }
162
163
164 static void
expect_u64_max(OptsVisitorFixture * f,gconstpointer test_data)165 expect_u64_max(OptsVisitorFixture *f, gconstpointer test_data)
166 {
167 expect_ok(f, test_data);
168 g_assert(f->userdef->has_u64);
169 g_assert(f->userdef->u64->next == NULL);
170 g_assert(f->userdef->u64->value == UINT64_MAX);
171 }
172
173 /* test cases */
174
175 static void
test_opts_range_unvisited(void)176 test_opts_range_unvisited(void)
177 {
178 Error *err = NULL;
179 intList *list = NULL;
180 intList *tail;
181 QemuOpts *opts;
182 Visitor *v;
183
184 opts = qemu_opts_parse(qemu_find_opts("userdef"), "ilist=0-2", false,
185 &error_abort);
186
187 v = opts_visitor_new(opts);
188
189 visit_start_struct(v, NULL, NULL, 0, &error_abort);
190
191 /* Would be simpler if the visitor genuinely supported virtual walks */
192 visit_start_list(v, "ilist", (GenericList **)&list, sizeof(*list),
193 &error_abort);
194 tail = list;
195 visit_type_int(v, NULL, &tail->value, &error_abort);
196 g_assert_cmpint(tail->value, ==, 0);
197 tail = (intList *)visit_next_list(v, (GenericList *)tail, sizeof(*list));
198 g_assert(tail);
199 visit_type_int(v, NULL, &tail->value, &error_abort);
200 g_assert_cmpint(tail->value, ==, 1);
201 tail = (intList *)visit_next_list(v, (GenericList *)tail, sizeof(*list));
202 g_assert(tail);
203 visit_check_list(v, &error_abort); /* unvisited tail ignored until... */
204 visit_end_list(v, (void **)&list);
205
206 visit_check_struct(v, &err); /* ...here */
207 error_free_or_abort(&err);
208 visit_end_struct(v, NULL);
209
210 qapi_free_intList(list);
211 visit_free(v);
212 qemu_opts_del(opts);
213 }
214
215 static void
test_opts_range_beyond(void)216 test_opts_range_beyond(void)
217 {
218 Error *err = NULL;
219 intList *list = NULL;
220 intList *tail;
221 QemuOpts *opts;
222 Visitor *v;
223 int64_t val;
224
225 opts = qemu_opts_parse(qemu_find_opts("userdef"), "ilist=0", false,
226 &error_abort);
227
228 v = opts_visitor_new(opts);
229
230 visit_start_struct(v, NULL, NULL, 0, &error_abort);
231
232 /* Would be simpler if the visitor genuinely supported virtual walks */
233 visit_start_list(v, "ilist", (GenericList **)&list, sizeof(*list),
234 &error_abort);
235 tail = list;
236 visit_type_int(v, NULL, &tail->value, &error_abort);
237 g_assert_cmpint(tail->value, ==, 0);
238 tail = (intList *)visit_next_list(v, (GenericList *)tail, sizeof(*tail));
239 g_assert(!tail);
240 visit_type_int(v, NULL, &val, &err);
241 error_free_or_abort(&err);
242 visit_end_list(v, (void **)&list);
243
244 visit_check_struct(v, &error_abort);
245 visit_end_struct(v, NULL);
246
247 qapi_free_intList(list);
248 visit_free(v);
249 qemu_opts_del(opts);
250 }
251
252 static void
test_opts_dict_unvisited(void)253 test_opts_dict_unvisited(void)
254 {
255 Error *err = NULL;
256 QemuOpts *opts;
257 Visitor *v;
258 UserDefOptions *userdef;
259
260 opts = qemu_opts_parse(qemu_find_opts("userdef"), "i64x=0,bogus=1", false,
261 &error_abort);
262
263 v = opts_visitor_new(opts);
264 visit_type_UserDefOptions(v, NULL, &userdef, &err);
265 error_free_or_abort(&err);
266 visit_free(v);
267 qemu_opts_del(opts);
268 g_assert(!userdef);
269 }
270
271 int
main(int argc,char ** argv)272 main(int argc, char **argv)
273 {
274 g_test_init(&argc, &argv, NULL);
275
276 qemu_add_opts(&userdef_opts);
277
278 /* Three hexadecimal magic numbers, "dead beef", "bad coffee, odd food" and
279 * "disease", from
280 * <http://en.wikipedia.org/wiki/Magic_number_%28programming%29>, were
281 * converted to binary and dissected into bit ranges. Each magic number is
282 * going to be recomposed using the lists called "i64", "u64" and "u16",
283 * respectively.
284 *
285 * (Note that these types pertain to the individual bit shift counts, not
286 * the magic numbers themselves; the intent is to exercise opts_type_int()
287 * and opts_type_uint64().)
288 *
289 * The "i64" shift counts have been decreased by 16 (decimal) in order to
290 * test negative values as well. Finally, the full list of QemuOpt elements
291 * has been permuted with "shuf".
292 *
293 * Both "i64" and "u64" have some (distinct) single-element ranges
294 * represented as both "a" and "a-a". "u16" is a special case of "i64" (see
295 * visit_type_uint16()), so it wouldn't add a separate test in this regard.
296 */
297
298 add_test("/visitor/opts/flatten/value", &test_value,
299 "i64=-1-0,u64=12-16,u64=2-3,i64=-11--9,u64=57,u16=9,i64=5-5,"
300 "u16=1-4,u16=20,u64=63-63,i64=-16--13,u64=50-52,i64=14-15,u16=11,"
301 "i64=7,u16=18,i64=2-3,u16=6,u64=54-55,u64=0,u64=18-20,u64=33-43,"
302 "i64=9-12,u16=26-27,u64=59-61,u16=13-16,u64=29-31,u64=22-23,"
303 "u16=24,i64=-7--3");
304
305 add_test("/visitor/opts/i64/val1/errno", &expect_fail,
306 "i64=0x8000000000000000");
307 add_test("/visitor/opts/i64/val1/empty", &expect_fail, "i64=");
308 add_test("/visitor/opts/i64/val1/trailing", &expect_fail, "i64=5z");
309 add_test("/visitor/opts/i64/nonlist", &expect_fail, "i64x=5-6");
310 add_test("/visitor/opts/i64/val2/errno", &expect_fail,
311 "i64=0x7fffffffffffffff-0x8000000000000000");
312 add_test("/visitor/opts/i64/val2/empty", &expect_fail, "i64=5-");
313 add_test("/visitor/opts/i64/val2/trailing", &expect_fail, "i64=5-6z");
314 add_test("/visitor/opts/i64/range/empty", &expect_fail, "i64=6-5");
315 add_test("/visitor/opts/i64/range/minval", &expect_i64_min,
316 "i64=-0x8000000000000000--0x8000000000000000");
317 add_test("/visitor/opts/i64/range/maxval", &expect_i64_max,
318 "i64=0x7fffffffffffffff-0x7fffffffffffffff");
319
320 add_test("/visitor/opts/u64/val1/errno", &expect_fail, "u64=-1");
321 add_test("/visitor/opts/u64/val1/empty", &expect_fail, "u64=");
322 add_test("/visitor/opts/u64/val1/trailing", &expect_fail, "u64=5z");
323 add_test("/visitor/opts/u64/nonlist", &expect_fail, "u64x=5-6");
324 add_test("/visitor/opts/u64/val2/errno", &expect_fail,
325 "u64=0xffffffffffffffff-0x10000000000000000");
326 add_test("/visitor/opts/u64/val2/empty", &expect_fail, "u64=5-");
327 add_test("/visitor/opts/u64/val2/trailing", &expect_fail, "u64=5-6z");
328 add_test("/visitor/opts/u64/range/empty", &expect_fail, "u64=6-5");
329 add_test("/visitor/opts/u64/range/minval", &expect_zero, "u64=0-0");
330 add_test("/visitor/opts/u64/range/maxval", &expect_u64_max,
331 "u64=0xffffffffffffffff-0xffffffffffffffff");
332
333 /* Test maximum range sizes. The macro value is open-coded here
334 * *intentionally*; the test case must use concrete values by design. If
335 * OPTS_VISITOR_RANGE_MAX is changed, the following values need to be
336 * recalculated as well. The assert and this comment should help with it.
337 */
338 g_assert(OPTS_VISITOR_RANGE_MAX == 65536);
339
340 /* The unsigned case is simple, a u64-u64 difference can always be
341 * represented as a u64.
342 */
343 add_test("/visitor/opts/u64/range/max", &expect_ok, "u64=0-65535");
344 add_test("/visitor/opts/u64/range/2big", &expect_fail, "u64=0-65536");
345
346 /* The same cannot be said about an i64-i64 difference. */
347 add_test("/visitor/opts/i64/range/max/pos/a", &expect_ok,
348 "i64=0x7fffffffffff0000-0x7fffffffffffffff");
349 add_test("/visitor/opts/i64/range/max/pos/b", &expect_ok,
350 "i64=0x7ffffffffffeffff-0x7ffffffffffffffe");
351 add_test("/visitor/opts/i64/range/2big/pos", &expect_fail,
352 "i64=0x7ffffffffffeffff-0x7fffffffffffffff");
353 add_test("/visitor/opts/i64/range/max/neg/a", &expect_ok,
354 "i64=-0x8000000000000000--0x7fffffffffff0001");
355 add_test("/visitor/opts/i64/range/max/neg/b", &expect_ok,
356 "i64=-0x7fffffffffffffff--0x7fffffffffff0000");
357 add_test("/visitor/opts/i64/range/2big/neg", &expect_fail,
358 "i64=-0x8000000000000000--0x7fffffffffff0000");
359 add_test("/visitor/opts/i64/range/2big/full", &expect_fail,
360 "i64=-0x8000000000000000-0x7fffffffffffffff");
361
362 g_test_add_func("/visitor/opts/range/unvisited",
363 test_opts_range_unvisited);
364 g_test_add_func("/visitor/opts/range/beyond",
365 test_opts_range_beyond);
366
367 g_test_add_func("/visitor/opts/dict/unvisited", test_opts_dict_unvisited);
368
369 g_test_run();
370 return 0;
371 }
372