[PATCH 2/2] tests/unit: always build the pbkdf crypto unit test

["Daniel P. Berrangé" <berrange@redhat.com>]

The meson rules were excluding the pbkdf crypto test when gnutls was the
crypto backend. It was then excluded again in #if statements in the test
file.

Rather than update these conditions, remove them all, and use the result
of the qcrypto_pbkdf_supports() function to determine whether to skip
test registration.

Also add CONFIG_DARWIN to the remaining condition, since we have a way
to measure CPU time on this platform since commit bf98afc75efedf1.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
 tests/unit/meson.build         | 4 +---
 tests/unit/test-crypto-pbkdf.c | 9 ++++++---
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/tests/unit/meson.build b/tests/unit/meson.build
index 490ab8182d..972d792883 100644
--- a/tests/unit/meson.build
+++ b/tests/unit/meson.build
@@ -121,9 +121,7 @@ if have_block
   if config_host_data.get('CONFIG_REPLICATION')
     tests += {'test-replication': [testblock]}
   endif
-  if nettle.found() or gcrypt.found()
-    tests += {'test-crypto-pbkdf': [io]}
-  endif
+  tests += {'test-crypto-pbkdf': [io]}
 endif
 
 if have_system
diff --git a/tests/unit/test-crypto-pbkdf.c b/tests/unit/test-crypto-pbkdf.c
index 43c417f6b4..034bb02422 100644
--- a/tests/unit/test-crypto-pbkdf.c
+++ b/tests/unit/test-crypto-pbkdf.c
@@ -25,8 +25,7 @@
 #include <sys/resource.h>
 #endif
 
-#if ((defined(CONFIG_NETTLE) || defined(CONFIG_GCRYPT)) && \
-     (defined(_WIN32) || defined(RUSAGE_THREAD)))
+#if defined(_WIN32) || defined(RUSAGE_THREAD) || defined(CONFIG_DARWIN)
 #include "crypto/pbkdf.h"
 
 typedef struct QCryptoPbkdfTestData QCryptoPbkdfTestData;
@@ -422,13 +421,17 @@ int main(int argc, char **argv)
     g_assert(qcrypto_init(NULL) == 0);
 
     for (i = 0; i < G_N_ELEMENTS(test_data); i++) {
+        if (!qcrypto_pbkdf2_supports(test_data[i].hash)) {
+            continue;
+        }
+
         if (!test_data[i].slow ||
             g_test_slow()) {
             g_test_add_data_func(test_data[i].path, &test_data[i], test_pbkdf);
         }
     }
 
-    if (g_test_slow()) {
+    if (g_test_slow() && qcrypto_pbkdf2_supports(QCRYPTO_HASH_ALG_SHA256)) {
         g_test_add_func("/crypt0/pbkdf/timing", test_pbkdf_timing);
     }
 
-- 
2.45.2