[Tests] Require exact match in assert_start_raises_init_eror()

Author: jnewbery

test/functional/feature_config_args.py

@@ -5,6 +5,7 @@
 """Test various command line arguments and configuration file parameters."""
 
 import os
+import re
 
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import get_datadir_path
@@ -25,13 +26,13 @@ def run_test(self):
 
         # Check that using -datadir argument on non-existent directory fails
         self.nodes[0].datadir = new_data_dir
-        self.nodes[0].assert_start_raises_init_error(['-datadir='+new_data_dir], 'Error: Specified data directory "' + new_data_dir + '" does not exist.')
+        self.nodes[0].assert_start_raises_init_error(['-datadir=' + new_data_dir], 'Error: Specified data directory "' + re.escape(new_data_dir) + '" does not exist.')
 
         # Check that using non-existent datadir in conf file fails
         conf_file = os.path.join(default_data_dir, "bitcoin.conf")
         with open(conf_file, 'a', encoding='utf8') as f:
             f.write("datadir=" + new_data_dir + "\n")
-        self.nodes[0].assert_start_raises_init_error(['-conf='+conf_file], 'Error reading configuration file: specified data directory "' + new_data_dir + '" does not exist.')
+        self.nodes[0].assert_start_raises_init_error(['-conf=' + conf_file], 'Error reading configuration file: specified data directory "' + re.escape(new_data_dir) + '" does not exist.')
 
         # Create the directory and ensure the config file now works
         os.mkdir(new_data_dir)

test/functional/feature_logging.py

@@ -30,8 +30,8 @@ def run_test(self):
         invdir = os.path.join(self.nodes[0].datadir, "regtest", "foo")
         invalidname = os.path.join("foo", "foo.log")
         self.stop_node(0)
-        self.nodes[0].assert_start_raises_init_error(["-debuglogfile=%s" % (invalidname)],
-                                                "Error: Could not open debug log file")
+        exp_stderr = "Error: Could not open debug log file \S+$"
+        self.nodes[0].assert_start_raises_init_error(["-debuglogfile=%s" % (invalidname)], exp_stderr)
         assert not os.path.isfile(os.path.join(invdir, "foo.log"))
 
         # check that invalid log (relative) works after path exists
@@ -44,8 +44,7 @@ def run_test(self):
         self.stop_node(0)
         invdir = os.path.join(self.options.tmpdir, "foo")
         invalidname = os.path.join(invdir, "foo.log")
-        self.nodes[0].assert_start_raises_init_error(["-debuglogfile=%s" % invalidname],
-                                               "Error: Could not open debug log file")
+        self.nodes[0].assert_start_raises_init_error(["-debuglogfile=%s" % invalidname], exp_stderr)
         assert not os.path.isfile(os.path.join(invdir, "foo.log"))
 
         # check that invalid log (absolute) works after path exists

test/functional/feature_uacomment.py

@@ -4,9 +4,12 @@
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test the -uacomment option."""
 
+import re
+
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_equal
 
+
 class UacommentTest(BitcoinTestFramework):
     def set_test_params(self):
         self.num_nodes = 1
@@ -23,13 +26,14 @@ def run_test(self):
 
         self.log.info("test -uacomment max length")
         self.stop_node(0)
-        expected = "exceeds maximum length (256). Reduce the number or size of uacomments."
+        expected = "Error: Total length of network version string \([0-9]+\) exceeds maximum length \(256\). Reduce the number or size of uacomments."
         self.nodes[0].assert_start_raises_init_error(["-uacomment=" + 'a' * 256], expected)
 
         self.log.info("test -uacomment unsafe characters")
         for unsafe_char in ['/', ':', '(', ')']:
-            expected = "User Agent comment (" + unsafe_char + ") contains unsafe characters"
+            expected = "Error: User Agent comment \(" + re.escape(unsafe_char) + "\) contains unsafe characters."
             self.nodes[0].assert_start_raises_init_error(["-uacomment=" + unsafe_char], expected)
 
+
 if __name__ == '__main__':
     UacommentTest().main()

test/functional/test_framework/test_node.py

@@ -169,8 +169,11 @@ def wait_until_stopped(self, timeout=BITCOIND_PROC_WAIT_TIMEOUT):
     def assert_start_raises_init_error(self, extra_args=None, expected_msg=None, *args, **kwargs):
         """Attempt to start the node and expect it to raise an error.
 
+        extra_args: extra arguments to pass through to bitcoind
+        expected_msg: regex that stderr should match when bitcoind fails
+
         Will throw if bitcoind starts without an error.
-        Will throw if an expected_msg is provided and it does not appear in bitcoind's stdout."""
+        Will throw if an expected_msg is provided and it does not match bitcoind's stdout."""
         with tempfile.SpooledTemporaryFile(max_size=2**16) as log_stderr:
             try:
                 self.start(extra_args, stderr=log_stderr, *args, **kwargs)
@@ -181,11 +184,12 @@ def assert_start_raises_init_error(self, extra_args=None, expected_msg=None, *ar
                 assert 'bitcoind exited' in str(e)  # node must have shutdown
                 self.running = False
                 self.process = None
+                # Check stderr for expected message
                 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)
+                    if re.fullmatch(expected_msg + '\n', stderr) is None:
+                        raise AssertionError('Expected message "{}" does not match stderr:\n"{}"'.format(expected_msg, stderr))
             else:
                 if expected_msg is None:
                     assert_msg = "bitcoind should have exited with an error"

test/functional/wallet_hd.py

@@ -23,7 +23,7 @@ def run_test (self):
 
         # Make sure can't switch off usehd after wallet creation
         self.stop_node(1)
-        self.nodes[1].assert_start_raises_init_error(['-usehd=0'], 'already existing HD wallet')
+        self.nodes[1].assert_start_raises_init_error(['-usehd=0'], "Error: Error loading : You can't disable HD on an already existing HD wallet")
         self.start_node(1)
         connect_nodes_bi(self.nodes, 0, 1)
 

test/functional/wallet_multiwallet.py

@@ -60,22 +60,30 @@ def run_test(self):
                 assert_equal(os.path.isfile(wallet_dir(wallet_name)), True)
 
         # should not initialize if wallet path can't be created
-        self.assert_start_raises_init_error(0, ['-wallet=wallet.dat/bad'], 'Not a directory')
+        exp_stderr = "\n\n\*+\n" + \
+                     "EXCEPTION: .*\n" + \
+                     "boost::filesystem::create_directory: Not a directory:.*\n" + \
+                     "bitcoin in .*\n"
+        self.nodes[0].assert_start_raises_init_error(['-wallet=wallet.dat/bad'], exp_stderr)
 
         self.nodes[0].assert_start_raises_init_error(['-walletdir=wallets'], 'Error: Specified -walletdir "wallets" does not exist')
         self.nodes[0].assert_start_raises_init_error(['-walletdir=wallets'], 'Error: Specified -walletdir "wallets" is a relative path', cwd=data_dir())
         self.nodes[0].assert_start_raises_init_error(['-walletdir=debug.log'], 'Error: Specified -walletdir "debug.log" is not a directory', cwd=data_dir())
 
         # should not initialize if there are duplicate wallets
-        self.nodes[0].assert_start_raises_init_error(['-wallet=w1', '-wallet=w1'], 'Error loading wallet w1. Duplicate -wallet filename specified.')
+        self.nodes[0].assert_start_raises_init_error(['-wallet=w1', '-wallet=w1'], 'Error: Error loading wallet w1. Duplicate -wallet filename specified.')
 
         # should not initialize if one wallet is a copy of another
         shutil.copyfile(wallet_dir('w8'), wallet_dir('w8_copy'))
-        self.nodes[0].assert_start_raises_init_error(['-wallet=w8', '-wallet=w8_copy'], 'duplicates fileid')
+        exp_stderr = "\n\n\*+\n" + \
+                     "EXCEPTION: .*\n" + \
+                     "CDB: Can't open database w8_copy \(duplicates fileid \w+ from w8\)\s*\n" + \
+                     "bitcoin in .*\n"
+        self.nodes[0].assert_start_raises_init_error(['-wallet=w8', '-wallet=w8_copy'], exp_stderr)
 
         # should not initialize if wallet file is a symlink
         os.symlink('w8', wallet_dir('w8_symlink'))
-        self.nodes[0].assert_start_raises_init_error(['-wallet=w8_symlink'], 'Invalid -wallet path')
+        self.nodes[0].assert_start_raises_init_error(['-wallet=w8_symlink'], 'Error: Invalid -wallet path \'w8_symlink\'\. .*')
 
         # should not initialize if the specified walletdir does not exist
         self.nodes[0].assert_start_raises_init_error(['-walletdir=bad'], 'Error: Specified -walletdir "bad" does not exist')
@@ -102,8 +110,9 @@ def run_test(self):
 
         competing_wallet_dir = os.path.join(self.options.tmpdir, 'competing_walletdir')
         os.mkdir(competing_wallet_dir)
-        self.restart_node(0, ['-walletdir='+competing_wallet_dir])
-        self.nodes[1].assert_start_raises_init_error(['-walletdir='+competing_wallet_dir], 'Error initializing wallet database environment')
+        self.restart_node(0, ['-walletdir=' + competing_wallet_dir])
+        exp_stderr = "Error: Error initializing wallet database environment \"\S+competing_walletdir\"!"
+        self.nodes[1].assert_start_raises_init_error(['-walletdir=' + competing_wallet_dir], exp_stderr)
 
         self.restart_node(0, extra_args)