Merge #12718: [Tests] Require exact match in assert_start_raises_init_eror (jnewbery)

fae1374 qa: Allow for partial_match when checking init error (MarcoFalke)
5812273 [Tests] Require exact match in assert_start_raises_init_eror() (John Newbery)
0ec08a6 [Tests] Move assert_start_raises_init_error method to TestNode (John Newbery)

Pull request description:

  Extracted from #12379, because the changes are important on their own.

  This allows for exact testing, since the match can be specified with a strict regex. Internal details (such as exact formatting of the error message) can still be fuzzed away by regex wildcards.

Tree-SHA512: 605d2c9c42362a32d42321b066637577a026d0bb8cfc1c9f5737a4ca6503ffe85457a5122cea6e1101053ccc6c8aa1bbae3602e1fa7d2988bf7d5c275f412f66

1 files changed, 0 insertions, 21 deletions

diff --git a/test/functional/test_framework/test_framework.py b/test/functional/test_framework/test_framework.py
index 8233087faa..1b5e1a594b 100755
--- a/test/functional/test_framework/test_framework.py
+++ b/test/functional/test_framework/test_framework.py
@@ -281,27 +281,6 @@ class BitcoinTestFramework():
         self.stop_node(i)
         self.start_node(i, extra_args)
 
-    def assert_start_raises_init_error(self, i, extra_args=None, expected_msg=None, *args, **kwargs):
-        with tempfile.SpooledTemporaryFile(max_size=2**16) as log_stderr:
-            try:
-                self.start_node(i, extra_args, stderr=log_stderr, *args, **kwargs)
-                self.stop_node(i)
-            except Exception as e:
-                assert 'bitcoind exited' in str(e)  # node must have shutdown
-                self.nodes[i].running = False
-                self.nodes[i].process = None
-                if expected_msg is not None:
-                    log_stderr.seek(0)
-                    stderr = log_stderr.read().decode('utf-8')
-                    if expected_msg not in stderr:
-                        raise AssertionError("Expected error \"" + expected_msg + "\" not found in:\n" + stderr)
-            else:
-                if expected_msg is None:
-                    assert_msg = "bitcoind should have exited with an error"
-                else:
-                    assert_msg = "bitcoind should have exited with expected error " + expected_msg
-                raise AssertionError(assert_msg)
-
     def wait_for_node_exit(self, i, timeout):
         self.nodes[i].process.wait(timeout)