tests: update template and add pids

Generalised the library API tests and created a common
test-runner. Instead of copy and pasting the same code in
each time.

First cut of pids API test, for _new so far.

proc/test_sysinfo.c

@@ -20,15 +20,12 @@
 #include <stdio.h>
 
 #include <proc/sysinfo.h>
-
-struct test_func {
-    int (*func)(void *data);
-    char *name;
-};
+#include "tests.h"
 
 int check_hertz(void *data)
 {
     long hz;
+    testname = "procps_hertz_get()";
 
     hz =  procps_hertz_get();
     return (hz > 0);
@@ -37,6 +34,7 @@ int check_hertz(void *data)
 int check_loadavg(void *data)
 {
     double a,b,c;
+    testname = "procps_loadavg()";
 
     if (procps_loadavg(&a, &b, &c) == 0)
         return 1;
@@ -45,33 +43,22 @@ int check_loadavg(void *data)
 
 int check_loadavg_null(void *data)
 {
+    testname = "procps_loadavg() with NULLs";
     if (procps_loadavg(NULL, NULL, NULL) == 0)
         return 1;
     return 0;
 }
 
-struct test_func tests[] = {
-    { check_hertz, "procps_hertz_get()"},
-    { check_loadavg, "procps_loadavg()"},
-    { check_loadavg, "procps_loadavg() with NULLs"},
-    { NULL, NULL}
+TestFunction test_funcs[] = {
+    check_hertz,
+    check_loadavg,
+    check_loadavg_null,
+    NULL,
 };
 
 int main(int argc, char *argv[])
 {
-    int i;
-    struct test_func *current;
-
-    for(i=0; tests[i].func != NULL; i++) {
-        current = &tests[i];
-        if (!current->func(NULL)) {
-            fprintf(stderr, "FAIL: %s\n", current->name);
-            return EXIT_FAILURE;
-        } else {
-            fprintf(stderr, "PASS: %s\n", current->name);
-        }
-    }
-    return EXIT_SUCCESS;
+    return run_tests(test_funcs, NULL);
 }