[Issue #83] Added single test execution mode

src/compat/pipe.c

@@ -318,3 +318,25 @@ static s_pipe_handle stdin_redir_;
 s_pipe_handle *stdout_redir = &stdout_redir_;
 s_pipe_handle *stderr_redir = &stderr_redir_;
 s_pipe_handle *stdin_redir  = &stdin_redir_;
+
+s_pipe_file_handle *pipe_file_open(const char *path) {
+    s_pipe_file_handle *h = smalloc(
+            .size = sizeof (s_pipe_file_handle),
+            .dtor = close_pipe_file_handle);
+#ifdef VANILLA_WIN32
+    if (!path)
+        path = "nul";
+    h->fh = CreateFile(path,
+                GENERIC_READ | GENERIC_WRITE,
+                0,
+                NULL,
+                OPEN_EXISTING,
+                FILE_ATTRIBUTE_NORMAL,
+                NULL);
+#else
+    if (!path)
+        path = "/dev/null";
+    h->fd = open(path, O_RDWR);
+#endif
+    return h;
+}

src/compat/pipe.h

@@ -79,4 +79,6 @@ extern s_pipe_handle *stdout_redir;
 extern s_pipe_handle *stderr_redir;
 extern s_pipe_handle *stdin_redir;
 
+s_pipe_file_handle *pipe_file_open(const char *path);
+
 #endif /* !PIPE_H_ */

src/core/runner.c

@@ -488,3 +488,24 @@ int criterion_run_all_tests(struct criterion_test_set *set) {
 
     return criterion_options.always_succeed || res;
 }
+
+void run_single_test_by_name(const char *testname) {
+    struct criterion_test_set *set = criterion_init();
+
+    g_event_pipe = pipe_file_open(NULL);
+
+    FOREACH_SET(struct criterion_suite_set *s, set->suites) {
+        size_t tests = s->tests ? s->tests->size : 0;
+        if (!tests)
+            continue;
+
+        FOREACH_SET(struct criterion_test *t, s->tests) {
+            char name[1024];
+            snprintf(name, sizeof (name), "%s::%s", s->suite.name, t->name);
+            if (!strncmp(name, testname, 1024))
+                run_test_child(t, &s->suite);
+        }
+    }
+
+    sfree(set);
+}

src/core/runner.h

@@ -43,4 +43,6 @@ void run_test_child(struct criterion_test *test, struct criterion_suite *suite);
             Suite < (struct criterion_suite**) GET_SECTION_END(cr_sts); \
             ++Suite)
 
+void run_single_test_by_name(const char *testname);
+
 #endif /* !CRITERION_RUNNER_H_ */

src/entry/params.c

@@ -149,6 +149,7 @@ int criterion_handle_args(int argc, char *argv[], bool handle_unknown_arg) {
         {"jobs",            required_argument,  0, 'j'},
         {"fail-fast",       no_argument,        0, 'f'},
         {"short-filename",  no_argument,        0, 'S'},
+        {"single",          required_argument,  0, 's'},
 #ifdef HAVE_PCRE
         {"pattern",         required_argument,  0, 'p'},
 #endif
@@ -245,6 +246,7 @@ int criterion_handle_args(int argc, char *argv[], bool handle_unknown_arg) {
             case 'j': criterion_options.jobs              = atou(optarg); break;
             case 'f': criterion_options.fail_fast         = true; break;
             case 'S': criterion_options.short_filename    = true; break;
+            case 's': run_single_test_by_name(optarg); return 0;
 #ifdef HAVE_PCRE
             case 'p': criterion_options.pattern           = optarg; break;
 #endif