test-execute: allow filtering test cases by pattern

When debugging failure in one of the cases, it's annoying to have to wade
through the output from all the other cases. Let's allow picking select
cases.

(cherry picked from commit 9efb96315ae502dabeb94ab35816ea8955563b7a)

Related: #1737283

1 files changed, 58 insertions, 46 deletions

diff --git a/src/test/test-execute.c b/src/test/test-execute.c
index d88de52d2a..d077674efc 100644
--- a/src/test/test-execute.c
+++ b/src/test/test-execute.c
@@ -659,8 +659,15 @@ static void test_exec_standardoutput_append(Manager *m) {
         test(m, "exec-standardoutput-append.service", 0, CLD_EXITED);
 }
 
-static int run_tests(UnitFileScope scope, const test_function_t *tests) {
-        const test_function_t *test = NULL;
+typedef struct test_entry {
+        test_function_t f;
+        const char *name;
+} test_entry;
+
+#define entry(x) {x, #x}
+
+static int run_tests(UnitFileScope scope, const test_entry tests[], char **patterns) {
+        const test_entry *test = NULL;
         _cleanup_(manager_freep) Manager *m = NULL;
         int r;
 
@@ -674,55 +681,60 @@ static int run_tests(UnitFileScope scope, const test_function_t *tests) {
         assert_se(r >= 0);
         assert_se(manager_startup(m, NULL, NULL) >= 0);
 
-        for (test = tests; test && *test; test++)
-                (*test)(m);
+        for (test = tests; test && test->f; test++)
+                if (strv_fnmatch_or_empty(patterns, test->name, FNM_NOESCAPE))
+                        test->f(m);
+                else
+                        log_info("Skipping %s because it does not match any pattern.", test->name);
 
         return 0;
 }
 
+
 int main(int argc, char *argv[]) {
         _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
-        static const test_function_t user_tests[] = {
-                test_exec_basic,
-                test_exec_ambientcapabilities,
-                test_exec_bindpaths,
-                test_exec_capabilityboundingset,
-                test_exec_cpuaffinity,
-                test_exec_environment,
-                test_exec_environmentfile,
-                test_exec_group,
-                test_exec_ignoresigpipe,
-                test_exec_inaccessiblepaths,
-                test_exec_ioschedulingclass,
-                test_exec_oomscoreadjust,
-                test_exec_passenvironment,
-                test_exec_personality,
-                test_exec_privatedevices,
-                test_exec_privatenetwork,
-                test_exec_privatetmp,
-                test_exec_protectkernelmodules,
-                test_exec_readonlypaths,
-                test_exec_readwritepaths,
-                test_exec_restrictnamespaces,
-                test_exec_runtimedirectory,
-                test_exec_standardinput,
-                test_exec_standardoutput,
-                test_exec_standardoutput_append,
-                test_exec_supplementarygroups,
-                test_exec_systemcallerrornumber,
-                test_exec_systemcallfilter,
-                test_exec_temporaryfilesystem,
-                test_exec_umask,
-                test_exec_unsetenvironment,
-                test_exec_user,
-                test_exec_workingdirectory,
-                NULL,
+        _cleanup_free_ char *test_execute_path = NULL;
+        static const test_entry user_tests[] = {
+                entry(test_exec_basic),
+                entry(test_exec_ambientcapabilities),
+                entry(test_exec_bindpaths),
+                entry(test_exec_capabilityboundingset),
+                entry(test_exec_cpuaffinity),
+                entry(test_exec_environment),
+                entry(test_exec_environmentfile),
+                entry(test_exec_group),
+                entry(test_exec_ignoresigpipe),
+                entry(test_exec_inaccessiblepaths),
+                entry(test_exec_ioschedulingclass),
+                entry(test_exec_oomscoreadjust),
+                entry(test_exec_passenvironment),
+                entry(test_exec_personality),
+                entry(test_exec_privatedevices),
+                entry(test_exec_privatenetwork),
+                entry(test_exec_privatetmp),
+                entry(test_exec_protectkernelmodules),
+                entry(test_exec_readonlypaths),
+                entry(test_exec_readwritepaths),
+                entry(test_exec_restrictnamespaces),
+                entry(test_exec_runtimedirectory),
+                entry(test_exec_standardinput),
+                entry(test_exec_standardoutput),
+                entry(test_exec_standardoutput_append),
+                entry(test_exec_supplementarygroups),
+                entry(test_exec_systemcallerrornumber),
+                entry(test_exec_systemcallfilter),
+                entry(test_exec_temporaryfilesystem),
+                entry(test_exec_umask),
+                entry(test_exec_unsetenvironment),
+                entry(test_exec_user),
+                entry(test_exec_workingdirectory),
+                {},
         };
-        static const test_function_t system_tests[] = {
-                test_exec_dynamicuser,
-                test_exec_specifier,
-                test_exec_systemcallfilter_system,
-                NULL,
+        static const test_entry system_tests[] = {
+                entry(test_exec_dynamicuser),
+                entry(test_exec_specifier),
+                entry(test_exec_systemcallfilter_system),
+                {},
         };
         int r;
 
@@ -759,9 +771,9 @@ int main(int argc, char *argv[]) {
         assert_se(unsetenv("VAR2") == 0);
         assert_se(unsetenv("VAR3") == 0);
 
-        r = run_tests(UNIT_FILE_USER, user_tests);
+        r = run_tests(UNIT_FILE_USER, user_tests, argv + 1);
         if (r != 0)
                 return r;
 
-        return run_tests(UNIT_FILE_SYSTEM, system_tests);
+        return run_tests(UNIT_FILE_SYSTEM, system_tests, argv + 1);
 }