[tests] don't override __init__() in individual tests

Almost all test scripts currently need to override the __init__()
method. When they do that they need to call into super().__init__() as
the base class does some generic initialization.

This commit makes the base class __init__() call into set_test_params()
method. Individual test cases can override set_test_params() to setup
their test parameters.

1 files changed, 1 insertions, 5 deletions

diff --git a/test/functional/fundrawtransaction.py b/test/functional/fundrawtransaction.py
index 242b6eed10..dec3d41bfc 100755
--- a/test/functional/fundrawtransaction.py
+++ b/test/functional/fundrawtransaction.py
@@ -14,13 +14,9 @@ def get_unspent(listunspent, amount):
             return utx
     raise AssertionError('Could not find unspent with amount={}'.format(amount))
 
-
 class RawTransactionsTest(BitcoinTestFramework):
-
-    def __init__(self):
-        super().__init__()
+    def set_test_params(self):
         self.setup_clean_chain = True
-        self.num_nodes = 4
 
     def setup_network(self, split=False):
         self.setup_nodes()