[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/receivedby.py b/test/functional/receivedby.py
index b165834169..48eb1c51b5 100755
--- a/test/functional/receivedby.py
+++ b/test/functional/receivedby.py
@@ -23,11 +23,7 @@ def get_sub_array_from_array(object_array, to_match):
     return []
 
 class ReceivedByTest(BitcoinTestFramework):
-
-    def __init__(self):
-        super().__init__()
-        self.num_nodes = 4
-        self.setup_clean_chain = False
+    def set_test_params(self):
         self.enable_mocktime()
 
     def run_test(self):