Tests: check TLS methods availability more carefully.

test/test_tls_conf_command.py

@@ -40,6 +40,10 @@ def test_tls_conf_command():
     (_, sock) = client.get_ssl(start=True)
 
     shared_ciphers = sock.shared_ciphers()
+
+    if not shared_ciphers:
+        pytest.skip('no shared ciphers')
+
     protocols = list(set(c[1] for c in shared_ciphers))
     protocol = sock.cipher()[1]
 

test/test_tls_session.py

@@ -73,6 +73,10 @@ def connect(ctx=None, session=None):
     )
 
 
+@pytest.mark.skipif(
+    not hasattr(_lib, 'SSL_session_reused'),
+    reason='session reuse is not supported',
+)
 def test_tls_session():
     _, sess, ctx, reused = connect()
     assert not reused, 'new connection'
@@ -110,6 +114,10 @@ def test_tls_session():
     assert False not in [c[-1] for c in conns_again], 'cache big reuse'
 
 
+@pytest.mark.skipif(
+    not hasattr(_lib, 'SSL_session_reused'),
+    reason='session reuse is not supported',
+)
 def test_tls_session_timeout():
     assert 'success' in add_session(cache_size=5, timeout=1)