python - 使用 pytest 检查是否创建了 sqlite 数据库

class Crud_db: def __init__(self, database = 'database.db'): self.database = database def connect(self): self.connection = sqlite3.connect(self.database) self.cursor = self.connection.cursor() # print('connect seccesfully') def execute(self, query): self.query = query self.cursor.execute(self.query) def close(self): self.connection.commit() self.connection.close() def save_to_csv(self, day = None): if day == None: query_general_bill_all = ''' SELECT * FROM general_bill''' query_expences_all = ''' SELECT * FROM expenses ''' query_total_all = ''' SELECT * FROM total ''' df1 = pd.read_sql(query_general_bill_all, sqlite3.connect(self.database)) df1.to_csv('general_bill_all.csv', index = False) df2 = pd.read_sql(query_expences_all, sqlite3.connect(self.database)) df2.to_csv('expenses_all.csv', index = False) df3 = pd.read_sql(query_total_all, sqlite3.connect(self.database)) df3.to_csv('total_day_all.csv', index = False) if day : try: day = str(day) query_general_bill_all = f" SELECT * FROM general_bill WHERE date_g == '{day}'" query_expences_all = f' SELECT * FROM expenses WHERE date == "{day}" ' query_total_all = f' SELECT * FROM total WHERE date == "{day}" ' df1 = pd.read_sql(query_general_bill_all, sqlite3.connect(self.database)) # print(df1) df1.to_csv(f'general_bill_{day}.csv', index = False) df2 = pd.read_sql(query_expences_all, sqlite3.connect(self.database)) df2.to_csv(f'expenses_{day}.csv', index = False) df3 = pd.read_sql(query_total_all, sqlite3.connect(self.database)) df3.to_csv(f'total_day_{day}.csv', index = False) except ValueError: sys.exit('value Error')

import pytest import sqlite3 from class_helper import Crud_db db = Crud_db() def test_tables(): db.connect() query = """ SELECT name FROM sqlite_master WHERE type='table' """ db.execute(query) result = db.cursor.fetchall() # print(result) assert len(result) == 8 class TestFile(object): def test_my_function(self, tmpdir): test_path = tmpdir.join('F:/final_project') save_csv = db.save_to_csv() save_csv assert test_path.read() == 'expenses_all'

platform win32 Python 3.8.8, pytest-7.1.2, pluggy-1.0.0 rootdir: F:\final_project collected 2 items test_project.py .F [100%] ===================================================================== FAILURES ====================================================================== _____________________________________________________________ TestFile.test_my_function _____________________________________________________________ self = <module 'py.error'>, func = <built-in function open> args = ('C:\\Users\\Zakaria\\AppData\\Local\\Temp\\pytest-of-Zakaria\\pytest-0\\test_my_function0', 'r'), kwargs = {}, __tracebackhide__ = False cls = <class 'py.error.EBUSY'>, value = PermissionError(13, 'Permission denied'), tb = <traceback object at 0x000001E0444A22C0>, errno = 13 def checked_call(self, func, *args, **kwargs): """ call a function and raise an errno-exception if applicable. """ __tracebackhide__ = True try: > return func(*args, **kwargs) E PermissionError: [Errno 13] Permission denied: 'C:\\Users\\Zakaria\\AppData\\Local\\Temp\\pytest-of-Zakaria\\pytest-0\\test_my_function0' lib\site-packages\py\_error.py:66: PermissionError During handling of the above exception, another exception occurred: self = <test_project.TestFile object at 0x000001E05EBEB3D0> tmpdir = local('C:\\Users\\Zakaria\\AppData\\Local\\Temp\\pytest-of-Zakaria\\pytest-0\\test_my_function0') def test_my_function(self, tmpdir): test_path = tmpdir.join('') save_csv = db.save_to_csv() save_csv > assert test_path.read() == 'expenses_all' test_project.py:31: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ lib\site-packages\py\_path\common.py:176: in read with self.open(mode) as f: lib\site-packages\py\_path\local.py:369: in open return py.error.checked_call(open, self.strpath, mode) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ self = <module 'py.error'>, func = <built-in function open> args = ('C:\\Users\\Zakaria\\AppData\\Local\\Temp\\pytest-of-Zakaria\\pytest-0\\test_my_function0', 'r'), kwargs = {}, __tracebackhide__ = False cls = <class 'py.error.EBUSY'>, value = PermissionError(13, 'Permission denied'), tb = <traceback object at 0x000001E0444A22C0>, errno = 13 def checked_call(self, func, *args, **kwargs): """ call a function and raise an errno-exception if applicable. """ __tracebackhide__ = True try: return func(*args, **kwargs) except self.Error: raise except (OSError, EnvironmentError): cls, value, tb = sys.exc_info() if not hasattr(value, 'errno'): raise __tracebackhide__ = False errno = value.errno try: if not isinstance(value, WindowsError): raise NameError except NameError: # we are not on Windows, or we got a proper OSError cls = self._geterrnoclass(errno) else: try: cls = self._geterrnoclass(_winerrnomap[errno]) except KeyError: raise value > raise cls("%s%r" % (func.__name__, args)) E py.error.EBUSY: [Resource device]: open('C:\\Users\\Zakaria\\AppData\\Local\\Temp\\pytest-of-Zakaria\\pytest-0\\test_my_function0', 'r') lib\site-packages\py\_error.py:86: EBUSY ============================================================== short test summary info ============================================================== FAILED test_project.py::TestFile::test_my_function - py.error.EBUSY: [Resource device]: open('C:\Users\Zakaria\AppData\Local\Temp\pytest-of-Z... ============================================================ 1 failed, 1 passed in 2.74s ============================================================