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In test/functional/wallet_multiwallet.py:

@@ -211,5 +211,15 @@ def run_test(self):
# Fail to load if wallet file is a symlink
assert_raises_rpc_error(-4, "Wallet file verification failed: Invalid -wallet path 'w8_symlink'", self.nodes[0].loadwallet, 'w8_symlink')

•    self.log.info("Test dynamic wallet creation.")
  

•    # Fail to create a wallet if it already exists.
  

•    assert_raises_rpc_error(-4, "Wallet w2 already exists.", self.nodes[0].createwallet, 'w2')
  

•    # Successfully create a wallet with a new name
  

•    self.nodes[0].createwallet('w9')