testutil: always print errors on failure

Reviewed-by: Richard Levitte <levitte@openssl.org>

test/asn1_internal_test.c

@@ -66,7 +66,6 @@ static int execute_tbl_standard(SIMPLE_FIXTURE fixture)
 
 static void teardown_tbl_standard(SIMPLE_FIXTURE fixture)
 {
-    ERR_print_errors_fp(stderr);
 }
 
 /**********************************************************************
@@ -116,7 +115,6 @@ static int execute_standard_methods(SIMPLE_FIXTURE fixture)
 
 static void teardown_standard_methods(SIMPLE_FIXTURE fixture)
 {
-    ERR_print_errors_fp(stderr);
 }
 
 /**********************************************************************

test/cipherlist_test.c

@@ -167,7 +167,6 @@ static void tear_down(CIPHERLIST_TEST_FIXTURE fixture)
 {
     SSL_CTX_free(fixture.server);
     SSL_CTX_free(fixture.client);
-    ERR_print_errors_fp(stderr);
 }
 
 #define SETUP_CIPHERLIST_TEST_FIXTURE() \

test/ct_test.c

@@ -88,7 +88,6 @@ static void tear_down(CT_TEST_FIXTURE fixture)
 {
     CTLOG_STORE_free(fixture.ctlog_store);
     SCT_LIST_free(fixture.sct_list);
-    ERR_print_errors_fp(stderr);
 }
 
 static char *mk_file_path(const char *dir, const char *file)

test/d2i_test.c

@@ -118,7 +118,6 @@ static int execute_test(D2I_TEST_FIXTURE fixture)
 
 static void tear_down(D2I_TEST_FIXTURE fixture)
 {
-    ERR_print_errors_fp(stderr);
 }
 
 #define SETUP_D2I_TEST_FIXTURE() \

test/heartbeat_test.c

@@ -155,7 +155,6 @@ static int dummy_handshake(SSL *s)
 
 static void tear_down(HEARTBEAT_TEST_FIXTURE fixture)
 {
-    ERR_print_errors_fp(stderr);
     SSL_free(fixture.s);
     SSL_CTX_free(fixture.ctx);
 }
@@ -365,7 +364,6 @@ int main(int argc, char *argv[])
     ADD_TEST(test_dtls1_heartbleed_excessive_plaintext_length);
 
     result = run_tests(argv[0]);
-    ERR_print_errors_fp(stderr);
     return result;
 }
 

test/mdc2_internal_test.c

@@ -60,7 +60,6 @@ static int execute_mdc2(SIMPLE_FIXTURE fixture)
 
 static void teardown_mdc2(SIMPLE_FIXTURE fixture)
 {
-    ERR_print_errors_fp(stderr);
 }
 
 /**********************************************************************

test/modes_internal_test.c

@@ -210,7 +210,6 @@ static int execute_cts128_nist(CTS128_FIXTURE fixture)
 
 static void teardown_cts128(CTS128_FIXTURE fixture)
 {
-    ERR_print_errors_fp(stderr);
 }
 
 /**********************************************************************
@@ -279,7 +278,6 @@ static int execute_gcm128(GCM128_FIXTURE fixture)
 
 static void teardown_gcm128(GCM128_FIXTURE fixture)
 {
-    ERR_print_errors_fp(stderr);
 }
 
 static void benchmark_gcm128(const unsigned char *K, size_t Klen,

test/poly1305_internal_test.c

@@ -144,7 +144,6 @@ static int execute_poly1305(SIMPLE_FIXTURE fixture)
 
 static void teardown_poly1305(SIMPLE_FIXTURE fixture)
 {
-    ERR_print_errors_fp(stderr);
 }
 
 static void benchmark_poly1305()

test/ssl_test.c

@@ -301,8 +301,6 @@ err:
     SSL_CTX_free(resume_server_ctx);
     SSL_CTX_free(resume_client_ctx);
     SSL_TEST_CTX_free(test_ctx);
-    if (ret != 1)
-        ERR_print_errors_fp(stderr);
     HANDSHAKE_RESULT_free(result);
     return ret;
 }

test/ssl_test_ctx_test.c

@@ -233,7 +233,6 @@ static int execute_failure_test(SSL_TEST_CTX_TEST_FIXTURE fixture)
 static void tear_down(SSL_TEST_CTX_TEST_FIXTURE fixture)
 {
     SSL_TEST_CTX_free(fixture.expected_ctx);
-    ERR_print_errors_fp(stderr);
 }
 
 #define SETUP_SSL_TEST_CTX_TEST_FIXTURE()                       \

test/testutil.c

@@ -15,6 +15,8 @@
 #include <string.h>
 #include "e_os.h"
 
+#include <openssl/err.h>
+
 /*
  * Declares the structures needed to register each test case function.
  */
@@ -55,6 +57,14 @@ void add_all_tests(const char *test_case_name, int(*test_fn)(int idx),
     num_test_cases += num;
 }
 
+static void finalize(int success)
+{
+    if (success)
+        ERR_clear_error();
+    else
+        ERR_print_errors_fp(stderr);
+}
+
 int run_tests(const char *test_prog_name)
 {
     int num_failed = 0;
@@ -66,18 +76,22 @@ int run_tests(const char *test_prog_name)
 
     for (i = 0; i != num_tests; ++i) {
         if (all_tests[i].num == -1) {
-            if (!all_tests[i].test_fn()) {
+            int ret = all_tests[i].test_fn();
+            if (!ret) {
                 printf("** %s failed **\n--------\n",
                        all_tests[i].test_case_name);
                 ++num_failed;
             }
+            finalize(ret);
         } else {
             for (j = 0; j < all_tests[i].num; j++) {
-                if (!all_tests[i].param_test_fn(j)) {
+                int ret = all_tests[i].param_test_fn(j);
+                if (!ret) {
                     printf("** %s failed test %d\n--------\n",
                            all_tests[i].test_case_name, j);
                     ++num_failed;
                 }
+                finalize(ret);
             }
         }
     }

test/x509_internal_test.c

@@ -66,7 +66,6 @@ static int execute_standard_exts(SIMPLE_FIXTURE fixture)
 
 static void teardown_standard_exts(SIMPLE_FIXTURE fixture)
 {
-    ERR_print_errors_fp(stderr);
 }
 
 /**********************************************************************