Made unit_setup() return an error code to abort the test early

This makes it possible to skip the call to unit_stop() in such
cases.  Also use Curl_safefree() in unit test 1302 so it will
pass the memory torture test.

tests/unit/curlcheck.h

@@ -46,12 +46,13 @@ extern int unitfail;
   int test(char *unused)                        \
   {                                             \
   (void)unused;                                 \
-  unit_setup();                                 \
-  {
+  if (unit_setup()) {                           \
+    fail("unit_setup() failure");               \
+  } else {
 
 #define UNITTEST_STOP                           \
+    unit_stop();                                \
   }                                             \
-  unit_stop();                                  \
   return unitfail;                              \
   }
 

tests/unit/unit1300.c

@@ -14,9 +14,12 @@ static void test_curl_llist_dtor(void *key , void *value)
   (void)value;
 }
 
-static void unit_setup( void )
+static CURLcode unit_setup( void )
 {
   llist = Curl_llist_alloc( test_curl_llist_dtor );
+  if (!llist)
+    return CURLE_OUT_OF_MEMORY;
+  return CURLE_OK;
 }
 
 static void unit_stop( void )

tests/unit/unit1301.c

@@ -5,7 +5,7 @@
 #include "strequal.h"
 #include "curlcheck.h"
 
-static void unit_setup( void ) {}
+static CURLcode unit_setup( void ) {return CURLE_OK;}
 static void unit_stop( void ) {}
 
 UNITTEST_START

tests/unit/unit1302.c

@@ -3,16 +3,21 @@
 #include "setup.h"
 
 #include "urldata.h"
+#include "url.h" /* for Curl_safefree */
 #include "curl_base64.h"
 #include "curlcheck.h"
 #include "memdebug.h" /* LAST include file */
 
 static struct SessionHandle *data;
 
-static void unit_setup( void )
+static CURLcode unit_setup( void )
 {
   data = curl_easy_init();
+  if (!data)
+    return CURLE_OUT_OF_MEMORY;
+  return CURLE_OK;
 }
+
 static void unit_stop( void )
 {
   curl_easy_cleanup(data);
@@ -27,56 +32,58 @@ size_t rc;
 rc = Curl_base64_encode(data, "i", 1, &output);
 fail_unless( rc == 4 , "return code should be 4" );
 verify_memory( output, "aQ==", 4);
-free(output);
+Curl_safefree(output);
 
 rc = Curl_base64_encode(data, "ii", 2, &output);
 fail_unless( rc == 4 , "return code should be 4" );
 verify_memory( output, "aWk=", 4);
-free(output);
+Curl_safefree(output);
 
 rc = Curl_base64_encode(data, "iii", 3, &output);
 fail_unless( rc == 4 , "return code should be 4" );
 verify_memory( output, "aWlp", 4);
-free(output);
+Curl_safefree(output);
 
 rc = Curl_base64_encode(data, "iiii", 4, &output);
 fail_unless( rc == 8 , "return code should be 8" );
 verify_memory( output, "aWlpaQ==", 8);
-free(output);
+Curl_safefree(output);
 
 /* 0 length makes it do strlen() */
 rc = Curl_base64_encode(data, "iiii", 0, &output);
 fail_unless( rc == 8 , "return code should be 8" );
 verify_memory( output, "aWlpaQ==", 8);
-free(output);
+Curl_safefree(output);
 
 rc = Curl_base64_decode("aWlpaQ==", &decoded);
 fail_unless(rc == 4, "return code should be 4");
 verify_memory(decoded, "iiii", 4);
-free(decoded);
+Curl_safefree(decoded);
 
 rc = Curl_base64_decode("aWlp", &decoded);
 fail_unless(rc == 3, "return code should be 3");
 verify_memory(decoded, "iii", 3);
-free(decoded);
+Curl_safefree(decoded);
 
 rc = Curl_base64_decode("aWk=", &decoded);
 fail_unless(rc == 2, "return code should be 2");
 verify_memory(decoded, "ii", 2);
-free(decoded);
+Curl_safefree(decoded);
 
 rc = Curl_base64_decode("aQ==", &decoded);
 fail_unless(rc == 1, "return code should be 1");
 verify_memory(decoded, "i", 2);
-free(decoded);
+Curl_safefree(decoded);
 
 /* this is an illegal input */
+decoded = NULL;
 rc = Curl_base64_decode("aQ", &decoded);
 fail_unless(rc == 0, "return code should be 0");
+fail_if(decoded, "returned pointer should be NULL");
 
 /* this is garbage input that libcurl decodes as far as possible */
 rc = Curl_base64_decode("a\x1f==", &decoded);
 fail_unless(rc == 1, "return code should be 1");
-free(decoded);
+Curl_safefree(decoded);
 
 UNITTEST_STOP

tests/unit/unit1303.c

@@ -9,10 +9,14 @@
 
 static struct SessionHandle *data;
 
-static void unit_setup( void )
+static CURLcode unit_setup( void )
 {
   data = curl_easy_init();
+  if (!data)
+    return CURLE_OUT_OF_MEMORY;
+  return CURLE_OK;
 }
+
 static void unit_stop( void )
 {
   curl_easy_cleanup(data);