tests/lib/plugin.c

   1 /*
   2  * Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; under version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  16  */
  17
  18 #include <babeltrace2/babeltrace.h>
  19 #include <stdlib.h>
  20 #include <string.h>
  21 #include <stdio.h>
  22 #include "common/assert.h"
  23 #include <glib.h>
  24 #include "tap/tap.h"
  25 #include "common.h"
  26
  27 #define NR_TESTS                38
  28 #define NON_EXISTING_PATH       "/this/hopefully/does/not/exist/5bc75f8d-0dba-4043-a509-d7984b97e42b.so"
  29
  30 /* Those symbols are written to by some test plugins */
  31 static int check_env_var(const char *name)
  32 {
  33         const char *val = getenv(name);
  34
  35         if (!val) {
  36                 return -1;
  37         }
  38
  39         return atoi(val);
  40 }
  41
  42 static void reset_test_plugin_env_vars(void)
  43 {
  44         g_setenv("BT_TEST_PLUGIN_INIT_CALLED", "0", 1);
  45         g_setenv("BT_TEST_PLUGIN_EXIT_CALLED", "0", 1);
  46 }
  47
  48 static char *get_test_plugin_path(const char *plugin_dir,
  49                 const char *plugin_name)
  50 {
  51         char *ret;
  52         char *plugin_file_name;
  53
  54         if (asprintf(&plugin_file_name, "plugin-%s." G_MODULE_SUFFIX,
  55                         plugin_name) == -1) {
  56                 abort();
  57         }
  58
  59         ret = g_build_filename(plugin_dir, plugin_file_name, NULL);
  60         free(plugin_file_name);
  61
  62         return ret;
  63 }
  64
  65 static void test_minimal(const char *plugin_dir)
  66 {
  67         const bt_plugin_set *plugin_set = NULL;
  68         const bt_plugin *plugin;
  69         char *minimal_path = get_test_plugin_path(plugin_dir, "minimal");
  70         bt_plugin_find_all_from_file_status status;
  71
  72         BT_ASSERT(minimal_path);
  73         diag("minimal plugin test below");
  74
  75         reset_test_plugin_env_vars();
  76         status = bt_plugin_find_all_from_file(minimal_path, BT_FALSE,
  77                 &plugin_set);
  78         ok(status == BT_PLUGIN_FIND_ALL_FROM_FILE_STATUS_OK,
  79                 "bt_plugin_find_all_from_file() succeeds with a valid file");
  80         ok(plugin_set,
  81                 "bt_plugin_find_all_from_file() returns a plugin set");
  82         ok(check_env_var("BT_TEST_PLUGIN_INIT_CALLED") == 1,
  83                 "plugin's initialization function is called during bt_plugin_find_all_from_file()");
  84         ok(bt_plugin_set_get_plugin_count(plugin_set) == 1,
  85                 "bt_plugin_find_all_from_file() returns the expected number of plugins");
  86         plugin = bt_plugin_set_borrow_plugin_by_index_const(plugin_set, 0);
  87         ok(strcmp(bt_plugin_get_name(plugin), "test_minimal") == 0,
  88                 "bt_plugin_get_name() returns the expected name");
  89         ok(strcmp(bt_plugin_get_description(plugin),
  90                 "Minimal Babeltrace plugin with no component classes") == 0,
  91                 "bt_plugin_get_description() returns the expected description");
  92         ok(bt_plugin_get_version(plugin, NULL, NULL, NULL, NULL) ==
  93                 BT_PROPERTY_AVAILABILITY_NOT_AVAILABLE,
  94                 "bt_plugin_get_version() fails when there's no version");
  95         ok(strcmp(bt_plugin_get_author(plugin), "Janine Sutto") == 0,
  96                 "bt_plugin_get_author() returns the expected author");
  97         ok(strcmp(bt_plugin_get_license(plugin), "Beerware") == 0,
  98                 "bt_plugin_get_license() returns the expected license");
  99         ok(strcmp(bt_plugin_get_path(plugin), minimal_path) == 0,
 100                 "bt_plugin_get_path() returns the expected path");
 101         ok(bt_plugin_get_source_component_class_count(plugin) == 0,
 102                 "bt_plugin_get_source_component_class_count() returns the expected value");
 103         ok(bt_plugin_get_filter_component_class_count(plugin) == 0,
 104                 "bt_plugin_get_filter_component_class_count() returns the expected value");
 105         ok(bt_plugin_get_sink_component_class_count(plugin) == 0,
 106                 "bt_plugin_get_sink_component_class_count() returns the expected value");
 107         bt_plugin_set_put_ref(plugin_set);
 108         ok(check_env_var("BT_TEST_PLUGIN_EXIT_CALLED") == 1,
 109                 "plugin's exit function is called when the plugin is destroyed");
 110
 111         free(minimal_path);
 112 }
 113
 114 static void test_sfs(const char *plugin_dir)
 115 {
 116         const bt_plugin_set *plugin_set = NULL;
 117         const bt_plugin *plugin;
 118         const bt_component_class_sink *sink_comp_class;
 119         const bt_component_class_source *source_comp_class;
 120         const bt_component_class_filter *filter_comp_class;
 121         const bt_component_sink *sink_component;
 122         char *sfs_path = get_test_plugin_path(plugin_dir, "sfs");
 123         unsigned int major, minor, patch;
 124         const char *extra;
 125         bt_value *params;
 126         const bt_value *results;
 127         const bt_value *object;
 128         const bt_value *res_params;
 129         bt_graph *graph;
 130         const char *object_str;
 131         bt_graph_add_component_status graph_ret;
 132         bt_query_executor *query_exec = bt_query_executor_create();
 133         int ret;
 134         bt_plugin_find_all_from_file_status status;
 135
 136         BT_ASSERT(query_exec);
 137         BT_ASSERT(sfs_path);
 138         diag("sfs plugin test below");
 139
 140         status = bt_plugin_find_all_from_file(sfs_path, BT_FALSE, &plugin_set);
 141         BT_ASSERT(status == BT_PLUGIN_FIND_ALL_FROM_FILE_STATUS_OK &&
 142                 plugin_set && bt_plugin_set_get_plugin_count(plugin_set) == 1);
 143         plugin = bt_plugin_set_borrow_plugin_by_index_const(plugin_set, 0);
 144         ok(bt_plugin_get_version(plugin, &major, &minor, &patch, &extra) ==
 145                 BT_PROPERTY_AVAILABILITY_AVAILABLE,
 146                 "bt_plugin_get_version() succeeds when there's a version");
 147         ok(major == 1,
 148                 "bt_plugin_get_version() returns the expected major version");
 149         ok(minor == 2,
 150                 "bt_plugin_get_version() returns the expected minor version");
 151         ok(patch == 3,
 152                 "bt_plugin_get_version() returns the expected patch version");
 153         ok(strcmp(extra, "yes") == 0,
 154                 "bt_plugin_get_version() returns the expected extra version");
 155         ok(bt_plugin_get_source_component_class_count(plugin) == 1,
 156                 "bt_plugin_get_source_component_class_count() returns the expected value");
 157         ok(bt_plugin_get_filter_component_class_count(plugin) == 1,
 158                 "bt_plugin_get_filter_component_class_count() returns the expected value");
 159         ok(bt_plugin_get_sink_component_class_count(plugin) == 1,
 160                 "bt_plugin_get_sink_component_class_count() returns the expected value");
 161
 162         source_comp_class = bt_plugin_borrow_source_component_class_by_name_const(
 163                 plugin, "source");
 164         ok(source_comp_class,
 165                 "bt_plugin_borrow_source_component_class_by_name_const() finds a source component class");
 166
 167         sink_comp_class = bt_plugin_borrow_sink_component_class_by_name_const(
 168                 plugin, "sink");
 169         ok(sink_comp_class,
 170                 "bt_plugin_borrow_sink_component_class_by_name_const() finds a sink component class");
 171         ok(strcmp(bt_component_class_get_help(bt_component_class_sink_as_component_class_const(sink_comp_class)),
 172                   "Bacon ipsum dolor amet strip steak cupim pastrami venison shoulder.\n"
 173                   "Prosciutto beef ribs flank meatloaf pancetta brisket kielbasa drumstick\n"
 174                   "venison tenderloin cow tail. Beef short loin shoulder meatball, sirloin\n"
 175                   "ground round brisket salami cupim pork bresaola turkey bacon boudin.\n") == 0,
 176                 "bt_component_class_get_help() returns the expected help text");
 177
 178         filter_comp_class = bt_plugin_borrow_filter_component_class_by_name_const(
 179                 plugin, "filter");
 180         ok(filter_comp_class,
 181                 "bt_plugin_borrow_filter_component_class_by_name_const() finds a filter component class");
 182         params = bt_value_integer_signed_create_init(23);
 183         BT_ASSERT(params);
 184         ret = bt_query_executor_query(query_exec,
 185                 bt_component_class_filter_as_component_class_const(filter_comp_class),
 186                 "get-something", params, BT_LOGGING_LEVEL_NONE, &results);
 187         ok(ret == 0 && results, "bt_query_executor_query() succeeds");
 188         BT_ASSERT(bt_value_is_array(results) && bt_value_array_get_size(results) == 2);
 189         object = bt_value_array_borrow_element_by_index_const(results, 0);
 190         BT_ASSERT(object && bt_value_is_string(object));
 191         object_str = bt_value_string_get(object);
 192         ok(strcmp(object_str, "get-something") == 0,
 193                 "bt_component_class_query() receives the expected object name");
 194         res_params = bt_value_array_borrow_element_by_index_const(results, 1);
 195         ok(bt_value_compare(res_params, params),
 196                 "bt_component_class_query() receives the expected parameters");
 197
 198         bt_component_class_sink_get_ref(sink_comp_class);
 199         diag("> putting the plugin set object here");
 200         BT_PLUGIN_SET_PUT_REF_AND_RESET(plugin_set);
 201         graph = bt_graph_create();
 202         BT_ASSERT(graph);
 203         graph_ret = bt_graph_add_sink_component(graph, sink_comp_class,
 204                 "the-sink", NULL, BT_LOGGING_LEVEL_NONE, &sink_component);
 205         ok(graph_ret == BT_GRAPH_ADD_COMPONENT_STATUS_OK && sink_component,
 206                 "bt_graph_add_sink_component() still works after the plugin object is destroyed");
 207         BT_COMPONENT_SINK_PUT_REF_AND_RESET(sink_component);
 208         bt_graph_put_ref(graph);
 209
 210         free(sfs_path);
 211         bt_component_class_sink_put_ref(sink_comp_class);
 212         bt_value_put_ref(results);
 213         bt_value_put_ref(params);
 214         bt_query_executor_put_ref(query_exec);
 215 }
 216
 217 static void test_create_all_from_dir(const char *plugin_dir)
 218 {
 219         const bt_plugin_set *plugin_set;
 220         bt_plugin_find_all_from_dir_status status;
 221
 222         diag("create from all test below");
 223
 224         status = bt_plugin_find_all_from_dir(NON_EXISTING_PATH, BT_FALSE,
 225                 BT_FALSE, &plugin_set);
 226         ok(status == BT_PLUGIN_FIND_ALL_FROM_DIR_STATUS_ERROR,
 227                 "bt_plugin_find_all_from_dir() fails with an invalid path");
 228         bt_current_thread_clear_error();
 229
 230         plugin_set = NULL;
 231         status = bt_plugin_find_all_from_dir(plugin_dir, BT_FALSE, BT_FALSE,
 232                 &plugin_set);
 233         ok(status == BT_PLUGIN_FIND_ALL_FROM_DIR_STATUS_OK,
 234                 "bt_plugin_find_all_from_dir() succeeds with a valid path");
 235         ok(plugin_set,
 236                 "bt_plugin_find_all_from_dir() returns a plugin set with a valid path");
 237
 238         /* 2 or 4, if `.la` files are considered or not */
 239         ok(bt_plugin_set_get_plugin_count(plugin_set) == 2 ||
 240                 bt_plugin_set_get_plugin_count(plugin_set) == 4,
 241                 "bt_plugin_find_all_from_dir() returns the expected number of plugin objects");
 242
 243         bt_plugin_set_put_ref(plugin_set);
 244 }
 245
 246 static void test_find(const char *plugin_dir)
 247 {
 248         int ret;
 249         const bt_plugin *plugin;
 250         char *plugin_path;
 251         bt_plugin_find_status status;
 252
 253         ok(bt_plugin_find(NON_EXISTING_PATH, BT_TRUE, BT_FALSE, BT_FALSE,
 254                 BT_FALSE, BT_FALSE, &plugin) == BT_PLUGIN_FIND_STATUS_NOT_FOUND,
 255                 "bt_plugin_find() returns BT_PLUGIN_STATUS_NOT_FOUND with an unknown plugin name");
 256         ret = asprintf(&plugin_path, "%s" G_SEARCHPATH_SEPARATOR_S
 257                         G_DIR_SEPARATOR_S "ec1d09e5-696c-442e-b1c3-f9c6cf7f5958"
 258                         G_SEARCHPATH_SEPARATOR_S G_SEARCHPATH_SEPARATOR_S
 259                         G_SEARCHPATH_SEPARATOR_S "%s" G_SEARCHPATH_SEPARATOR_S
 260                         "8db46494-a398-466a-9649-c765ae077629"
 261                         G_SEARCHPATH_SEPARATOR_S,
 262                 NON_EXISTING_PATH, plugin_dir);
 263         BT_ASSERT(ret > 0 && plugin_path);
 264         g_setenv("BABELTRACE_PLUGIN_PATH", plugin_path, 1);
 265         plugin = NULL;
 266         status = bt_plugin_find("test_minimal", BT_TRUE, BT_FALSE, BT_FALSE,
 267                 BT_FALSE, BT_FALSE, &plugin);
 268         ok(status == BT_PLUGIN_FIND_STATUS_OK,
 269                 "bt_plugin_find() succeeds with a plugin name it can find");
 270         ok(plugin, "bt_plugin_find() returns a plugin object");
 271         ok(strcmp(bt_plugin_get_author(plugin), "Janine Sutto") == 0,
 272                 "bt_plugin_find() finds the correct plugin for a given name");
 273         BT_PLUGIN_PUT_REF_AND_RESET(plugin);
 274         free(plugin_path);
 275 }
 276
 277 int main(int argc, char **argv)
 278 {
 279         int ret;
 280         const char *plugin_dir;
 281
 282         if (argc != 2) {
 283                 puts("Usage: test_plugin plugin_directory");
 284                 ret = 1;
 285                 goto end;
 286         }
 287
 288         plugin_dir = argv[1];
 289         plan_tests(NR_TESTS);
 290         test_minimal(plugin_dir);
 291         test_sfs(plugin_dir);
 292         test_create_all_from_dir(plugin_dir);
 293         test_find(plugin_dir);
 294         ret = exit_status();
 295 end:
 296         return ret;
 297 }