1 #include <tools/ccanlint/ccanlint.h>
11 #include <ccan/talloc/talloc.h>
13 static char test_is_not_dir[] = "test is not a directory";
15 static void *check_has_tests(struct manifest *m)
18 char *test_dir = talloc_asprintf(m, "%s/test", m->dir);
20 if (lstat(test_dir, &st) != 0) {
22 err(1, "statting %s", test_dir);
23 return "You have no test directory";
26 if (!S_ISDIR(st.st_mode))
27 return test_is_not_dir;
29 if (list_empty(&m->api_tests)
30 && list_empty(&m->run_tests)
31 && list_empty(&m->compile_ok_tests)) {
32 if (list_empty(&m->compile_fail_tests))
33 return "You have no tests in the test directory";
35 return "You have no positive tests in the test directory";
40 static const char *describe_has_tests(struct manifest *m, void *check_result)
42 return talloc_asprintf(m, "%s\n\n"
43 "CCAN modules have a directory called test/ which contains tests.\n"
44 "There are four kinds of tests: api, run, compile_ok and compile_fail:\n"
45 "you can tell which type of test a C file is by its name, eg 'run.c'\n"
46 "and 'run-simple.c' are both run tests.\n\n"
48 "The simplest kind of test is a run test, which must compile with no\n"
49 "warnings, and then run: it is expected to use libtap to report its\n"
50 "results in a simple and portable format. It should #include the C\n"
51 "files from the module directly (so it can probe the internals): the\n"
52 "module will not be linked in.\n\n"
54 "api tests are just like a run test, except it is a guarantee of API\n"
55 "stability: this test should pass on all future versions of the\n"
56 "module. They *are* linked to the module, since they should only\n"
57 "test the API, not the internal state.\n\n"
59 "compile_ok tests are a subset of run tests: they must compile and\n"
60 "link, but aren't run.\n\n"
62 "compile_fail tests are tests which should fail to compile (or emit\n"
63 "warnings) or link when FAIL is defined, but should compile and link\n"
64 "when it's not defined: this helps ensure unrelated errors don't make\n"
65 "compilation fail.\n\n"
67 "Note that the tests are not linked against the files in the\n"
68 "above: you should directly #include those C files you want. This\n"
69 "allows access to static functions and use special effects inside\n"
70 "test files\n", (char *)check_result);
73 static void handle_no_tests(struct manifest *m, void *check_result)
78 if (check_result == test_is_not_dir)
81 if (!ask("Should I create a template test/run.c file for you?"))
84 if (mkdir("test", 0700) != 0) {
86 err(1, "Creating test/ directory");
89 run = fopen("test/run.c", "w");
91 err(1, "Trying to create a test/run.c");
93 fputs("/* Include the main header first, to test it works */\n", run);
94 fprintf(run, "#include \"%s/%s.h\"\n", m->basename, m->basename);
95 fputs("/* Include the C files directly. */\n", run);
96 list_for_each(&m->c_files, i, list)
97 fprintf(run, "#include \"%s/%s\"\n", m->basename, i->name);
98 fputs("#include \"tap/tap.h\"\n", run);
101 fputs("int main(void)\n", run);
103 fputs("\t/* This is how many tests you plan to run */\n", run);
104 fputs("\tplan_tests(3);\n", run);
106 fputs("\t/* Simple thing we expect to succeed */\n", run);
107 fputs("\tok1(some_test())\n", run);
108 fputs("\t/* Same, with an explicit description of the test. */\n", run);
109 fputs("\tok(some_test(), \"%s with no args should return 1\", \"some_test\")\n", run);
110 fputs("\t/* How to print out messages for debugging. */\n", run);
111 fputs("\tdiag(\"Address of some_test is %p\", &some_test)\n", run);
112 fputs("\t/* Conditional tests must be explicitly skipped. */\n", run);
113 fputs("#if HAVE_SOME_FEATURE\n", run);
114 fputs("\tok1(test_some_feature())\n", run);
115 fputs("#else\n", run);
116 fputs("\tskip(1, \"Don\'t have SOME_FEATURE\")\n", run);
117 fputs("#endif\n", run);
119 fputs("\t/* This exits depending on whether all tests passed */\n", run);
120 fputs("\treturn exit_status();\n", run);
126 struct ccanlint has_tests = {
128 .check = check_has_tests,
129 .describe = describe_has_tests,
130 .handle = handle_no_tests,
133 REGISTER_TEST(has_tests, NULL);