[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, 3 deletions

diff --git a/test/functional/mining.py b/test/functional/mining.py
index dbd4e29eca..8edc704670 100755
--- a/test/functional/mining.py
+++ b/test/functional/mining.py
@@ -25,9 +25,7 @@ def assert_template(node, block, expect, rehash=True):
     assert_equal(rsp, expect)
 
 class MiningTest(BitcoinTestFramework):
-
-    def __init__(self):
-        super().__init__()
+    def set_test_params(self):
         self.num_nodes = 2
         self.setup_clean_chain = False