test: feature_rbf.py: check specified wallet type availability

The test currently leads to a failure if in general wallet
support is compiled, but the library for the specified type
(BDB/SQLite) is not, i.e.  if started with the
`--legacy-wallet` parameter, but bitcoind is compiled
without BDB support.

Fix this by checking if the specified wallet type (BDB for
legacy wallet, SQLite for descriptor wallet) is available.

Also move the helper `is_specified_wallet_compiled()` to the
test framework's class BitcoinTestFramework first, so it can
be reused.

1 files changed, 8 insertions, 0 deletions

diff --git a/test/functional/test_framework/test_framework.py b/test/functional/test_framework/test_framework.py
index 6746fbf9f9..8f75255caf 100755
--- a/test/functional/test_framework/test_framework.py
+++ b/test/functional/test_framework/test_framework.py
@@ -886,6 +886,14 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
         """Checks whether the wallet module was compiled."""
         return self.config["components"].getboolean("ENABLE_WALLET")
 
+    def is_specified_wallet_compiled(self):
+        """Checks whether wallet support for the specified type
+           (legacy or descriptor wallet) was compiled."""
+        if self.options.descriptors:
+            return self.is_sqlite_compiled()
+        else:
+            return self.is_bdb_compiled()
+
     def is_wallet_tool_compiled(self):
         """Checks whether bitcoin-wallet was compiled."""
         return self.config["components"].getboolean("ENABLE_WALLET_TOOL")