firebird/firebird-qa
6
0
Fork 0
mirror of https://github.com/FirebirdSQL/firebird-qa.git synced 2025-01-22 13:33:07 +01:00
Code Issues Activity

Added/Updated tests\bugs\gh_7200_test.py: added comments

Browse Source
This commit is contained in:
pavel-zotov 2025-01-18 16:16:50 +03:00
parent 7740052e00
commit 1fc6791847
1 changed files with 45 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

69
tests/bugs/gh_7200_test.py
View File

@ -37,6 +37,13 @@ NOTES:
Increased number of inserted rows (from 100'000 to 200'000) and indexed column width (from 700 to 800).
Otherwise test could fail because encryption thread completes too fast (encountered under Linux).
Loop that checks for appearance of encryption state = 3 must have delay much less than one second (changed it from 1 to 0.1).
[18.01.2025] pzotov
Resultset of cursor that executes using instance of selectable PreparedStatement must be stored
in some variable in order to have ability close it EXPLICITLY (before PS will be freed).
Otherwise access violation raises during Python GC and pytest hangs at final point (does not return control to OS).
This occurs at least for: Python 3.11.2 / pytest: 7.4.4 / firebird.driver: 1.10.6 / Firebird.Qa: 0.19.3
The reason of that was explained by Vlad, 26.10.24 17:42 ("oddities when use instances of selective statements").
"""
import datetime as py_dt
@ -128,34 +135,48 @@ def test_1(act: Action, act_tmp: Action, tmp_sql: Path, tmp_log: Path, capsys):
encryption_started = False
with act_tmp.db.connect() as con_watcher:
ps, rs = None, None
try:
custom_tpb = tpb(isolation = Isolation.SNAPSHOT, lock_timeout = -1)
tx_watcher = con_watcher.transaction_manager(custom_tpb)
cur_watcher = tx_watcher.cursor()
custom_tpb = tpb(isolation = Isolation.SNAPSHOT, lock_timeout = -1)
tx_watcher = con_watcher.transaction_manager(custom_tpb)
cur_watcher = tx_watcher.cursor()
# 0 = non-encrypted; 1 = encrypted; 2 = is DEcrypting; 3 - is Encrypting
ps = cur_watcher.prepare('select mon$crypt_state from mon$database')
# 0 = non-encrypted; 1 = encrypted; 2 = is DEcrypting; 3 - is Encrypting
ps = cur_watcher.prepare('select mon$crypt_state from mon$database')
i = 0
da = dt.now()
while True:
# ::: NB ::: 'ps' returns data, i.e. this is SELECTABLE expression.
# We have to store result of cur.execute(<psInstance>) in order to
# close it explicitly.
# Otherwise AV can occur during Python garbage collection and this
# causes pytest to hang on its final point.
# Explained by hvlad, email 26.10.24 17:42
rs = cur_watcher.execute(ps)
for r in rs:
db_crypt_state = r[0]
i = 0
da = dt.now()
while True:
cur_watcher.execute(ps)
for r in cur_watcher:
db_crypt_state = r[0]
tx_watcher.commit()
db = dt.now()
diff_ms = (db-da).seconds*1000 + (db-da).microseconds//1000
if db_crypt_state == IS_ENCRYPTING_STATE:
encryption_started = True
cur_watcher.call_procedure('sp_debug', ('encryption_started',))
break
elif diff_ms > MAX_WAIT_FOR_ENCRYPTION_START_MS:
break
time.sleep(0.1)
tx_watcher.commit()
db = dt.now()
diff_ms = (db-da).seconds*1000 + (db-da).microseconds//1000
if db_crypt_state == IS_ENCRYPTING_STATE:
encryption_started = True
cur_watcher.call_procedure('sp_debug', ('encryption_started',))
break
elif diff_ms > MAX_WAIT_FOR_ENCRYPTION_START_MS:
break
time.sleep(0.1)
ps.free()
except DatabaseError as e:
print( e.__str__() )
print(e.gds_codes)
finally:
if rs:
rs.close() # <<< EXPLICITLY CLOSING CURSOR RESULTS
if ps:
ps.free()
assert encryption_started, f'Could not find start of encryption process for {MAX_WAIT_FOR_ENCRYPTION_START_MS} ms.'