4 #include "run-command.h"
8 typedef int(fn_unit_test)(int argc, const char **argv);
19 static int get_i(int *p_value, const char *data)
26 *p_value = strtol(data, &endptr, 10);
27 if (*endptr || errno == ERANGE)
34 * Cause process to exit with the requested value via "return".
36 * Rely on test-tool.c:cmd_main() to call trace2_cmd_exit()
39 * Test harness can confirm:
40 * [] the process-exit value.
41 * [] the "code" field in the "exit" trace2 event.
42 * [] the "code" field in the "atexit" trace2 event.
43 * [] the "name" field in the "cmd_name" trace2 event.
44 * [] "def_param" events for all of the "interesting" pre-defined
47 static int ut_001return(int argc, const char **argv)
51 if (get_i(&rc, argv[0]))
52 die("expect <exit_code>");
58 * Cause the process to exit with the requested value via "exit()".
60 * Test harness can confirm:
61 * [] the "code" field in the "exit" trace2 event.
62 * [] the "code" field in the "atexit" trace2 event.
63 * [] the "name" field in the "cmd_name" trace2 event.
64 * [] "def_param" events for all of the "interesting" pre-defined
67 static int ut_002exit(int argc, const char **argv)
71 if (get_i(&rc, argv[0]))
72 die("expect <exit_code>");
78 * Send an "error" event with each value in argv. Normally, git only issues
79 * a single "error" event immediately before issuing an "exit" event (such
80 * as in die() or BUG()), but multiple "error" events are allowed.
82 * Test harness can confirm:
83 * [] a trace2 "error" event for each value in argv.
84 * [] the "name" field in the "cmd_name" trace2 event.
85 * [] (optional) the file:line in the "exit" event refers to this function.
87 static int ut_003error(int argc, const char **argv)
91 if (!argv[0] || !*argv[0])
92 die("expect <error_message>");
94 for (k = 0; k < argc; k++)
101 * Run a child process and wait for it to finish and exit with its return code.
102 * test-tool trace2 004child [<child-command-line>]
105 * test-tool trace2 004child git version
106 * test-tool trace2 004child test-tool trace2 001return 0
107 * test-tool trace2 004child test-tool trace2 004child test-tool trace2 004child
108 * test-tool trace2 004child git -c alias.xyz=version xyz
110 * Test harness can confirm:
111 * [] the "name" field in the "cmd_name" trace2 event.
112 * [] that the outer process has a single component SID (or depth "d0" in
114 * [] that "child_start" and "child_exit" events are generated for the child.
115 * [] if the child process is an instrumented executable:
116 * [] that "version", "start", ..., "exit", and "atexit" events are
117 * generated by the child process.
118 * [] that the child process events have a multiple component SID (or
119 * depth "dN+1" in the PERF stream).
120 * [] that the child exit code is propagated to the parent process "exit"
121 * and "atexit" events..
122 * [] (optional) that the "t_abs" field in the child process "atexit" event
123 * is less than the "t_rel" field in the "child_exit" event of the parent
125 * [] if the child process is like the alias example above,
126 * [] (optional) the child process attempts to run "git-xyx" as a dashed
128 * [] the child process emits an "alias" event with "xyz" => "version"
129 * [] the child process runs "git version" as a child process.
130 * [] the child process has a 3 component SID (or depth "d2" in the PERF
133 static int ut_004child(int argc, const char **argv)
138 * Allow empty <child_command_line> so we can do arbitrarily deep
139 * command nesting and let the last one be null.
144 result = run_command_v_opt(argv, 0);
149 * Exec a git command. This may either create a child process (Windows)
150 * or replace the existing process.
151 * test-tool trace2 005exec <git_command_args>
154 * test-tool trace2 005exec version
156 * Test harness can confirm (on Windows):
157 * [] the "name" field in the "cmd_name" trace2 event.
158 * [] that the outer process has a single component SID (or depth "d0" in
160 * [] that "exec" and "exec_result" events are generated for the child
161 * process (since the Windows compatibility layer fakes an exec() with
162 * a CreateProcess(), WaitForSingleObject(), and exit()).
163 * [] that the child process has multiple component SID (or depth "dN+1"
164 * in the PERF stream).
166 * Test harness can confirm (on platforms with a real exec() function):
167 * [] TODO talk about process replacement and how it affects SID.
169 static int ut_005exec(int argc, const char **argv)
176 result = execv_git_cmd(argv);
180 static int ut_006data(int argc, const char **argv)
182 const char *usage_error =
183 "expect <cat0> <k0> <v0> [<cat1> <k1> <v1> [...]]";
186 die("%s", usage_error);
189 if (!argv[0] || !*argv[0] || !argv[1] || !*argv[1] ||
190 !argv[2] || !*argv[2])
191 die("%s", usage_error);
193 trace2_data_string(argv[0], the_repository, argv[1], argv[2]);
201 static int ut_007bug(int argc, const char **argv)
204 * Exercise BUG() to ensure that the message is printed to trace2.
206 BUG("the bug message");
211 * test-tool trace2 <ut_name_1> <ut_usage_1>
212 * test-tool trace2 <ut_name_2> <ut_usage_2>
215 #define USAGE_PREFIX "test-tool trace2"
217 /* clang-format off */
218 static struct unit_test ut_table[] = {
219 { ut_001return, "001return", "<exit_code>" },
220 { ut_002exit, "002exit", "<exit_code>" },
221 { ut_003error, "003error", "<error_message>+" },
222 { ut_004child, "004child", "[<child_command_line>]" },
223 { ut_005exec, "005exec", "<git_command_args>" },
224 { ut_006data, "006data", "[<category> <key> <value>]+" },
225 { ut_007bug, "007bug", "" },
227 /* clang-format on */
229 /* clang-format off */
230 #define for_each_ut(k, ut_k) \
231 for (k = 0, ut_k = &ut_table[k]; \
232 k < ARRAY_SIZE(ut_table); \
233 k++, ut_k = &ut_table[k])
234 /* clang-format on */
236 static int print_usage(void)
239 struct unit_test *ut_k;
241 fprintf(stderr, "usage:\n");
242 for_each_ut (k, ut_k)
243 fprintf(stderr, "\t%s %s %s\n", USAGE_PREFIX, ut_k->ut_name,
250 * Issue various trace2 events for testing.
252 * We assume that these trace2 routines has already been called:
253 * [] trace2_initialize() [common-main.c:main()]
254 * [] trace2_cmd_start() [common-main.c:main()]
255 * [] trace2_cmd_name() [test-tool.c:cmd_main()]
256 * [] tracd2_cmd_list_config() [test-tool.c:cmd_main()]
258 * [] the various trace2 streams are open.
259 * [] the process SID has been created.
260 * [] the "version" event has been generated.
261 * [] the "start" event has been generated.
262 * [] the "cmd_name" event has been generated.
263 * [] this writes various "def_param" events for interesting config values.
265 * We further assume that if we return (rather than exit()), trace2_cmd_exit()
266 * will be called by test-tool.c:cmd_main().
268 int cmd__trace2(int argc, const char **argv)
271 struct unit_test *ut_k;
273 argc--; /* skip over "trace2" arg */
277 for_each_ut (k, ut_k)
278 if (!strcmp(argv[0], ut_k->ut_name))
279 return ut_k->ut_fn(argc - 1, argv + 1);
281 return print_usage();