Switch test cases to use libcheck framework

This keeps the test logic the same, but moves most of them into the libcheck
test suite framework.  It gives better control over grouping related tests,
running them in parallel, and reporting on multiple failures.

Running in parallel also brings problems, so libykcs11 tests are left
untouched.  Parallel access to a single hardware DUT does not make sense,
and pcsc-lite doesn't work after a fork() in OS X 10.11+, so it can't run
in libcheck's tests anyway.

tool/tests/parse_name.c

@@ -28,6 +28,8 @@
  *
  */
 
+#include <check.h>
+
 #include <string.h>
 #include <stdbool.h>
 
@@ -39,18 +41,26 @@
 
 #include "util.h"
 
-static void test_name(const char *name, const char *expected, bool fail) {
+struct name {
+  const char *name;
+  const char *parsed_name;
+  bool valid;
+} names[] = {
+  {"/CN=test foo/", "CN = test foo", true},
+  {"/CN=test/OU=bar/O=EXAMPLE/", "CN = test, OU = bar, O = EXAMPLE", true},
+  {"/CN=test/OU=bar/O=EXAMPLE/", "CN = test, OU = wrong, O = EXAMPLE", false},
+  {"/foo/", "", false},
+  {"/CN=test/foobar/", "", false},
+  {"/CN=test/foo=bar/", "", false},
+};
+
+static bool test_name(const char *name, const char *expected) {
   char buf[1024];
   BIO *bio;
   const char none[] = {0};
   X509_NAME *parsed = parse_name(name);
   if(parsed == NULL) {
-    if(fail) {
-      return;
-    } else {
-      printf("Failed parsing of '%s'!\n", name);
-      exit(EXIT_FAILURE);
-    }
+    return false;
   }
 
   bio = BIO_new(BIO_s_mem());
@@ -61,17 +71,39 @@ static void test_name(const char *name, const char *expected, bool fail) {
   BIO_free(bio);
   X509_NAME_free(parsed);
   if(strcmp(buf, expected) != 0) {
-    printf("Names not matching: '%s' != '%s'\n", expected, buf);
-    exit(EXIT_FAILURE);
+    fprintf(stderr, "Names not matching: '%s' != '%s'\n", expected, buf);
+    return false;
   }
+  return true;
 }
 
-int main(void) {
-  test_name("/CN=test foo/", "CN = test foo", false);
-  test_name("/CN=test/OU=bar/O=EXAMPLE/", "CN = test, OU = bar, O = EXAMPLE", false);
-  test_name("/foo/", "", true);
-  test_name("/CN=test/foobar/", "", true);
-  test_name("/CN=test/foo=bar/", "", true);
-
-  return EXIT_SUCCESS;
+START_TEST(test_parse_name) {
+  ck_assert(test_name(names[_i].name, names[_i].parsed_name) == names[_i].valid);
+}
+END_TEST
+
+Suite *test_suite(void) {
+  Suite *s;
+  TCase *tc;
+
+  s = suite_create("yubico-piv-tool parse_name");
+  tc = tcase_create("parse_name");
+  tcase_add_loop_test(tc, test_parse_name, 0, sizeof(names) / sizeof(struct name));
+  suite_add_tcase(s, tc);
+
+  return s;
+}
+
+int main(void)
+{
+  int number_failed;
+  Suite *s;
+  SRunner *sr;
+
+  s = test_suite();
+  sr = srunner_create(s);
+  srunner_run_all(sr, CK_NORMAL);
+  number_failed = srunner_ntests_failed(sr);
+  srunner_free(sr);
+  return (number_failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
 }