Advanced to version 1.3.2.

README.rst

@@ -7,7 +7,8 @@ Description
 ===========
 
 *Mia! Accounting* is an accounting module for Flask_ applications.
-It implements `double-entry bookkeeping`_, and generates the following
+It is designed both for mobile and desktop environments.  It
+implements `double-entry bookkeeping`_.  It generates the following
 accounting reports:
 
 * Trial balance
@@ -18,6 +19,18 @@ In addition, *Mia! Accounting* tracks offsets for unpaid payables and
 receivables.
 
 
+Live Demonstration and Test Site
+================================
+
+There is a `live demonstration`_ for *Mia! Accounting*.  It runs the
+same code as the `test site`_ in the `source distribution`_.  It is
+the simplest website that works with *Mia! Accounting*.  It is also
+used in the automatic tests.
+
+If you do not have a running Flask application or do not know how to
+start one, you may start with the test site.
+
+
 Installation
 ============
 
@@ -27,22 +40,10 @@ Install *Mia! Accounting* with ``pip``:
 
     pip install mia-accounting
 
-You may also download the from the `PyPI project page`_ or the
+You may also download from the `PyPI project page`_ or the
 `release page`_ on the `Git repository`_.
 
 
-Test Site and Live Demonstration
-================================
-
-You may find a working example in the `test site`_ in the
-`source distribution`_.  It is the simplest website that works with
-*Mia! Accounting*.  It is used in the automatic tests.  It is the same
-code run for `live demonstration`_.
-
-If you do not have a running Flask application or do not know how to
-start one, you may start with the test site.
-
-
 Prerequisites
 =============
 
@@ -191,9 +192,9 @@ Authors
 
 .. _Flask: https://flask.palletsprojects.com
 .. _double-entry bookkeeping: https://en.wikipedia.org/wiki/Double-entry_bookkeeping
+.. _live demonstration: https://accounting.imacat.idv.tw
 .. _test site: https://github.com/imacat/mia-accounting/tree/main/tests/test_site
 .. _source distribution: https://pypi.org/project/mia-accounting/#files
-.. _live demonstration: https://accounting.imacat.idv.tw
 .. _PyPI project page: https://pypi.org/project/mia-accounting
 .. _release page: https://github.com/imacat/mia-accounting/releases
 .. _Git repository: https://github.com/imacat/mia-accounting
@@ -204,6 +205,5 @@ Authors
 .. _Tempus-Dominus: https://getdatepicker.com
 .. _UserUtilityInterface: https://mia-accounting.readthedocs.io/en/latest/accounting.utils.html#accounting.utils.user.UserUtilityInterface
 .. _init_app: https://mia-accounting.readthedocs.io/en/latest/accounting.html#accounting.init_app
-.. _flask_sqlalchemy.SQLAlchemy.create_all: https://flask-sqlalchemy.palletsprojects.com/en/3.0.x/api/#flask_sqlalchemy.SQLAlchemy.create_all
 .. _Bootstrap navigation bar: https://getbootstrap.com/docs/5.3/components/navbar/
 .. _documentation on Read the Docs: https://mia-accounting.readthedocs.io

docs/source/conf.py

@@ -13,7 +13,7 @@ sys.path.insert(0, os.path.abspath('../../src/'))
 project = 'Mia! Accounting'
 copyright = '2023, imacat'
 author = 'imacat'
-release = '1.3.0'
+release = '1.3.2'
 
 # -- General configuration ---------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration

docs/source/intro.rst

@@ -2,7 +2,8 @@ Introduction
 ============
 
 *Mia! Accounting* is an accounting module for Flask_ applications.
-It implements `double-entry bookkeeping`_, and generates the following
+It is designed both for mobile and desktop environments.  It
+implements `double-entry bookkeeping`_.  It generates the following
 accounting reports:
 
 * Trial balance
@@ -13,6 +14,18 @@ In addition, *Mia! Accounting* tracks offsets for unpaid payables and
 receivables.
 
 
+Live Demonstration and Test Site
+--------------------------------
+
+There is a `live demonstration`_ for *Mia! Accounting*.  It runs the
+same code as the `test site`_ in the `source distribution`_.  It is
+the simplest website that works with *Mia! Accounting*.  It is also
+used in the automatic tests.
+
+If you do not have a running Flask application or do not know how to
+start one, you may start with the test site.
+
+
 Installation
 ------------
 
@@ -22,22 +35,10 @@ Install *Mia! Accounting* with ``pip``:
 
     pip install mia-accounting
 
-You may also download the from the `PyPI project page`_ or the
+You may also download from the `PyPI project page`_ or the
 `release page`_ on the `Git repository`_.
 
 
-Test Site and Live Demonstration
---------------------------------
-
-You may find a working example in the `test site`_ in the
-`source distribution`_.  It is the simplest website that works with
-*Mia! Accounting*.  It is used in the automatic tests.  It is the same
-code run for `live demonstration`_.
-
-If you do not have a running Flask application or do not know how to
-start one, you may start with the test site.
-
-
 Prerequisites
 -------------
 
@@ -110,9 +111,9 @@ Refer to the `documentation on Read the Docs`_.
 
 .. _Flask: https://flask.palletsprojects.com
 .. _double-entry bookkeeping: https://en.wikipedia.org/wiki/Double-entry_bookkeeping
+.. _live demonstration: https://accounting.imacat.idv.tw
 .. _test site: https://github.com/imacat/mia-accounting/tree/main/tests/test_site
 .. _source distribution: https://pypi.org/project/mia-accounting/#files
-.. _live demonstration: https://accounting.imacat.idv.tw
 .. _PyPI project page: https://pypi.org/project/mia-accounting
 .. _release page: https://github.com/imacat/mia-accounting/releases
 .. _Git repository: https://github.com/imacat/mia-accounting
@@ -121,6 +122,5 @@ Refer to the `documentation on Read the Docs`_.
 .. _FontAwesome: https://fontawesome.com
 .. _Decimal.js: https://mikemcl.github.io/decimal.js
 .. _Tempus-Dominus: https://getdatepicker.com
-.. _flask_sqlalchemy.SQLAlchemy.create_all: https://flask-sqlalchemy.palletsprojects.com/en/3.0.x/api/#flask_sqlalchemy.SQLAlchemy.create_all
 .. _Bootstrap navigation bar: https://getbootstrap.com/docs/5.3/components/navbar/
 .. _documentation on Read the Docs: https://mia-accounting.readthedocs.io

pyproject.toml

@@ -17,7 +17,7 @@
 
 [project]
 name = "mia-accounting"
-version = "1.3.0"
+version = "1.3.2"
 description = "A Flask accounting module."
 readme = "README.rst"
 requires-python = ">=3.11"

src/accounting/journal_entry/converters.py

@@ -20,11 +20,10 @@
 from datetime import date
 
 from flask import abort
-from sqlalchemy.orm import selectinload
 from werkzeug.routing import BaseConverter
 
 from accounting import db
-from accounting.models import JournalEntry, JournalEntryLineItem
+from accounting.models import JournalEntry
 from accounting.utils.journal_entry_types import JournalEntryType
 
 

src/accounting/templates/accounting/include/nav.html

@@ -51,12 +51,14 @@ First written: 2023/1/26
           {{ A_("Currencies") }}
         </a>
       </li>
-      <li>
+      {% if accounting_can_edit() %}
-        <a class="dropdown-item {% if request.endpoint and request.endpoint.startswith("accounting.unmatched-offset.") %} active {% endif %}" href="{{ url_for("accounting.unmatched-offset.dashboard") }}">
+        <li>
-          <i class="fa-solid fa-link-slash"></i>
+          <a class="dropdown-item {% if request.endpoint and request.endpoint.startswith("accounting.unmatched-offset.") %} active {% endif %}" href="{{ url_for("accounting.unmatched-offset.dashboard") }}">
-          {{ A_("Unmatched Offsets") }}
+            <i class="fa-solid fa-link-slash"></i>
-        </a>
+            {{ A_("Unmatched Offsets") }}
-      </li>
+          </a>
+        </li>
+      {% endif %}
       {% if accounting_can_admin() %}
         <li>
           <a class="dropdown-item {% if request.endpoint and request.endpoint.startswith("accounting.option.") %} active {% endif %}" href="{{ url_for("accounting.option.detail") }}">

tests/babel-utils-test-site.py

@@ -129,5 +129,5 @@ def __update_file_rev_date(file: Path) -> None:
 main.add_command(babel_extract)
 main.add_command(babel_compile)
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     main()

tests/babel-utils.py

@@ -129,5 +129,5 @@ def __update_file_rev_date(file: Path) -> None:
 main.add_command(babel_extract)
 main.add_command(babel_compile)
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     main()

tests/make-sample.py

@@ -0,0 +1,306 @@
+#! env python3
+# The Mia! Accounting Project.
+# Author: imacat@mail.imacat.idv.tw (imacat), 2023/4/9
+
+#  Copyright (c) 2023 imacat.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+"""The sample data generation.
+
+"""
+from datetime import date, timedelta
+
+import click
+
+from testlib import Accounts, create_test_app, JournalEntryLineItemData, \
+    JournalEntryCurrencyData, JournalEntryData, \
+    BaseTestData
+
+
+@click.command()
+@click.argument("file")
+def main(file) -> None:
+    """Creates the sample data and output to a file."""
+    data: SampleData = SampleData(create_test_app(), "editor")
+    with open(file, "wt") as fp:
+        fp.write(data.json())
+
+
+class SampleData(BaseTestData):
+    """The sample data."""
+
+    def _init_data(self) -> None:
+        self.__add_recurring()
+        self.__add_offsets()
+        self.__add_meals()
+
+    def __add_recurring(self) -> None:
+        """Adds the recurring data.
+
+        :return: None.
+        """
+        self.__add_usd_recurring()
+        self.__add_twd_recurring()
+
+    def __add_usd_recurring(self) -> None:
+        """Adds the recurring data in USD.
+
+        :return: None.
+        """
+        today: date = date.today()
+        days: int
+        year: int
+        month: int
+
+        # Recurring in USD
+        j_date: date = date(today.year - 5, today.month, today.day)
+        j_date = j_date + timedelta(days=(4 - j_date.weekday()))
+        days = (today - j_date).days
+        while True:
+            if days < 0:
+                break
+            self.__add_journal_entry(
+                days, "USD", "2600",
+                Accounts.BANK, "Transfer", Accounts.SERVICE, "Payroll")
+
+            days = days - 1
+            if days < 0:
+                break
+            self.__add_journal_entry(
+                days, "USD", "1200",
+                Accounts.CASH, None, Accounts.BANK, "Withdraw")
+            days = days - 13
+
+        year = today.year - 5
+        month = today.month
+        while True:
+            month = month + 1
+            if month > 12:
+                year = year + 1
+                month = 1
+            days = (today - date(year, month, 1)).days
+            if days < 0:
+                break
+            self.__add_journal_entry(
+                days, "USD", "1800",
+                Accounts.RENT_EXPENSE, "Rent", Accounts.BANK, "Transfer")
+
+    def __add_twd_recurring(self) -> None:
+        """Adds the recurring data in TWD.
+
+        :return: None.
+        """
+        today: date = date.today()
+
+        year: int = today.year - 5
+        month: int = today.month
+        while True:
+            days: int = (today - date(year, month, 5)).days
+            if days < 0:
+                break
+            self.__add_journal_entry(
+                days, "TWD", "50000",
+                Accounts.BANK, "薪資轉帳", Accounts.SERVICE, "薪水")
+
+            days = days - 1
+            if days < 0:
+                break
+            self.__add_journal_entry(
+                days, "TWD", "25000",
+                Accounts.CASH, None, Accounts.BANK, "提款")
+
+            days = days - 4
+            if days < 0:
+                break
+            self.__add_journal_entry(
+                days, "TWD", "18000",
+                Accounts.RENT_EXPENSE, "房租", Accounts.BANK, "轉帳")
+
+            month = month + 1
+            if month > 12:
+                year = year + 1
+                month = 1
+
+    def __add_offsets(self) -> None:
+        """Adds the offset data.
+
+        :return: None.
+        """
+        days: int
+        year: int
+        month: int
+        description: str
+        line_item_or: JournalEntryLineItemData
+        line_item_of: JournalEntryLineItemData
+
+        # Full offset and unmatched in USD
+        description = "Speaking—Institute"
+        line_item_or = JournalEntryLineItemData(
+            Accounts.RECEIVABLE, description, "120")
+        self._add_journal_entry(JournalEntryData(
+            40, [JournalEntryCurrencyData(
+                "USD", [line_item_or], [JournalEntryLineItemData(
+                    Accounts.SERVICE, description, "120")])]))
+        line_item_of = JournalEntryLineItemData(
+            Accounts.RECEIVABLE, description, "120",
+            original_line_item=line_item_or)
+        self._add_journal_entry(JournalEntryData(
+            5, [JournalEntryCurrencyData(
+                "USD", [JournalEntryLineItemData(
+                    Accounts.BANK, description, "120")],
+                [line_item_of])]))
+        self.__add_journal_entry(
+            30, "USD", "120",
+            Accounts.BANK, description, Accounts.SERVICE, description)
+
+        # Partial offset in USD
+        line_item_or = JournalEntryLineItemData(
+            Accounts.PAYABLE, "Computer", "1600")
+        self._add_journal_entry(JournalEntryData(
+            60, [JournalEntryCurrencyData(
+                "USD", [JournalEntryLineItemData(
+                    Accounts.MACHINERY, "Computer", "1600")],
+                [line_item_or])]))
+        line_item_of = JournalEntryLineItemData(
+            Accounts.PAYABLE, "Computer", "800",
+            original_line_item=line_item_or)
+        self._add_journal_entry(JournalEntryData(
+            35, [JournalEntryCurrencyData(
+                "USD", [line_item_of], [JournalEntryLineItemData(
+                    Accounts.BANK, "Computer", "800")])]))
+        line_item_of = JournalEntryLineItemData(
+            Accounts.PAYABLE, "Computer", "400",
+            original_line_item=line_item_or)
+        self._add_journal_entry(JournalEntryData(
+            10, [JournalEntryCurrencyData(
+                "USD", [line_item_of], [JournalEntryLineItemData(
+                    Accounts.CASH, "Computer", "400")])]))
+
+        # Full offset and unmatched in TWD
+        description = "演講費—母校"
+        line_item_or = JournalEntryLineItemData(
+            Accounts.RECEIVABLE, description, "3000")
+        self._add_journal_entry(JournalEntryData(
+            45, [JournalEntryCurrencyData(
+                "TWD", [line_item_or], [JournalEntryLineItemData(
+                    Accounts.SERVICE, description, "3000")])]))
+        line_item_of = JournalEntryLineItemData(
+            Accounts.RECEIVABLE, description, "3000",
+            original_line_item=line_item_or)
+        self._add_journal_entry(JournalEntryData(
+            6, [JournalEntryCurrencyData(
+                "TWD", [JournalEntryLineItemData(
+                    Accounts.BANK, description, "3000")],
+                [line_item_of])]))
+        self.__add_journal_entry(
+            25, "TWD", "3000",
+            Accounts.BANK, description, Accounts.SERVICE, description)
+
+        # Partial offset in TWD
+        line_item_or = JournalEntryLineItemData(
+            Accounts.PAYABLE, "手機", "30000")
+        self._add_journal_entry(JournalEntryData(
+            55, [JournalEntryCurrencyData(
+                "TWD", [JournalEntryLineItemData(
+                    Accounts.MACHINERY, "手機", "30000")],
+                [line_item_or])]))
+        line_item_of = JournalEntryLineItemData(
+            Accounts.PAYABLE, "手機", "16000",
+            original_line_item=line_item_or)
+        self._add_journal_entry(JournalEntryData(
+            27, [JournalEntryCurrencyData(
+                "TWD", [line_item_of], [JournalEntryLineItemData(
+                    Accounts.BANK, "手機", "16000")])]))
+        line_item_of = JournalEntryLineItemData(
+            Accounts.PAYABLE, "手機", "6000",
+            original_line_item=line_item_or)
+        self._add_journal_entry(JournalEntryData(
+            8, [JournalEntryCurrencyData(
+                "TWD", [line_item_of], [JournalEntryLineItemData(
+                    Accounts.CASH, "手機", "6000")])]))
+
+    def __add_meals(self) -> None:
+        """Adds the meal data.
+
+        :return: None.
+        """
+        days = 60
+        while days >= 0:
+            # Meals in USD
+            if days % 4 == 2:
+                self.__add_journal_entry(
+                    days, "USD", "2.9",
+                    Accounts.MEAL, "Lunch—Coffee", Accounts.CASH, None)
+            else:
+                self.__add_journal_entry(
+                    days, "USD", "3.9",
+                    Accounts.MEAL, "Lunch—Coffee", Accounts.CASH, None)
+
+            if days % 15 == 3:
+                self.__add_journal_entry(
+                    days, "USD", "5.45",
+                    Accounts.MEAL, "Dinner—Pizza",
+                    Accounts.PAYABLE, "Dinner—Pizza")
+            else:
+                self.__add_journal_entry(
+                    days, "USD", "5.9",
+                    Accounts.MEAL, "Dinner—Pasta", Accounts.CASH, None)
+
+            # Meals in TWD
+            if days % 5 == 3:
+                self.__add_journal_entry(
+                    days, "TWD", "125",
+                    Accounts.MEAL, "午餐—鄰家咖啡", Accounts.CASH, None)
+            else:
+                self.__add_journal_entry(
+                    days, "TWD", "80",
+                    Accounts.MEAL, "午餐—便當", Accounts.CASH, None)
+
+            if days % 15 == 3:
+                self.__add_journal_entry(
+                    days, "TWD", "320",
+                    Accounts.MEAL, "晚餐—牛排", Accounts.PAYABLE, "晚餐—牛排")
+            else:
+                self.__add_journal_entry(
+                    days, "TWD", "100",
+                    Accounts.MEAL, "晚餐—自助餐", Accounts.CASH, None)
+
+            days = days - 1
+
+    def __add_journal_entry(
+            self, days: int, currency: str, amount: str,
+            debit_account: str, debit_description: str | None,
+            credit_account: str, credit_description: str | None) -> None:
+        """Adds a simple journal entry.
+
+        :param days: The number of days before today.
+        :param currency: The currency code.
+        :param amount: The amount.
+        :param debit_account: The debit account code.
+        :param debit_description: The debit description.
+        :param credit_account: The credit account code.
+        :param credit_description: The credit description.
+        :return: None.
+        """
+        self._add_journal_entry(JournalEntryData(
+            days,
+            [JournalEntryCurrencyData(
+                currency,
+                [JournalEntryLineItemData(
+                    debit_account, debit_description, amount)],
+                [JournalEntryLineItemData(
+                    credit_account, credit_description, amount)])]))
+
+
+if __name__ == "__main__":
+    main()

tests/test_offset.py

@@ -51,8 +51,8 @@ class OffsetTestCase(unittest.TestCase):
             JournalEntryLineItem.query.delete()
 
         self.client, self.csrf_token = get_client(self.app, "editor")
-        self.data: OffsetTestData = OffsetTestData(
+        self.data: OffsetTestData = OffsetTestData(self.app, "editor")
-            self.app, self.client, self.csrf_token)
+        self.data.populate()
 
     def test_add_receivable_offset(self) -> None:
         """Tests to add the receivable offset.

tests/test_report.py

@@ -55,7 +55,7 @@ class ReportTestCase(unittest.TestCase):
         :return: None.
         """
         client, csrf_token = get_client(self.app, "nobody")
-        ReportTestData(self.app, self.client, self.csrf_token)
+        ReportTestData(self.app, "editor").populate()
         response: httpx.Response
 
         response = client.get(PREFIX)
@@ -130,7 +130,7 @@ class ReportTestCase(unittest.TestCase):
         :return: None.
         """
         client, csrf_token = get_client(self.app, "viewer")
-        ReportTestData(self.app, self.client, self.csrf_token)
+        ReportTestData(self.app, "editor").populate()
         response: httpx.Response
 
         response = client.get(PREFIX)
@@ -215,7 +215,7 @@ class ReportTestCase(unittest.TestCase):
 
         :return: None.
         """
-        ReportTestData(self.app, self.client, self.csrf_token)
+        ReportTestData(self.app, "editor").populate()
         response: httpx.Response
 
         response = self.client.get(PREFIX)

tests/test_site/__init__.py

@@ -22,7 +22,8 @@ import typing as t
 from secrets import token_urlsafe
 
 from click.testing import Result
-from flask import Flask, Blueprint, render_template, redirect, Response
+from flask import Flask, Blueprint, render_template, redirect, Response, \
+    url_for
 from flask.testing import FlaskCliRunner
 from flask_babel_js import BabelJS
 from flask_sqlalchemy import SQLAlchemy
@@ -70,6 +71,9 @@ def create_app(is_testing: bool = False) -> Flask:
     from . import auth
     auth.init_app(app)
 
+    from . import reset
+    reset.init_app(app)
+
     class UserUtilities(accounting.UserUtilityInterface[auth.User]):
 
         def can_view(self) -> bool:
@@ -86,7 +90,8 @@ def create_app(is_testing: bool = False) -> Flask:
                 and auth.current_user().username == "admin"
 
         def unauthorized(self) -> Response:
-            return redirect("/login")
+            from accounting.utils.next_uri import append_next
+            return redirect(append_next(url_for("auth.login-form")))
 
         @property
         def cls(self) -> t.Type[auth.User]:

tests/test_site/auth.py

@@ -18,7 +18,7 @@
 
 """
 from flask import Blueprint, render_template, Flask, redirect, url_for, \
-    session, request, g
+    session, request, g, Response
 
 from . import db
 
@@ -44,11 +44,13 @@ class User(db.Model):
 
 
 @bp.get("login", endpoint="login-form")
-def show_login_form() -> str:
+def show_login_form() -> str | Response:
     """Shows the login form.
 
     :return: The login form.
     """
+    if "user" in session:
+        return redirect(url_for("accounting-report.default"))
     return render_template("login.html")
 
 
@@ -58,11 +60,12 @@ def login() -> redirect:
 
     :return: The redirection to the home page.
     """
+    from accounting.utils.next_uri import inherit_next, or_next
     if request.form.get("username") not in {"viewer", "editor", "admin",
                                             "nobody"}:
-        return redirect(url_for("auth.login"))
+        return redirect(inherit_next(url_for("auth.login")))
     session["user"] = request.form.get("username")
-    return redirect(url_for("home.home"))
+    return redirect(or_next(url_for("accounting-report.default")))
 
 
 @bp.post("logout", endpoint="logout")

tests/test_site/reset.py

@@ -0,0 +1,153 @@
+# The Mia! Accounting Demonstration Website.
+# Author: imacat@mail.imacat.idv.tw (imacat), 2023/4/12
+
+#  Copyright (c) 2023 imacat.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+"""The data reset for the Mia! Accounting demonstration website.
+
+"""
+import json
+import typing as t
+from datetime import date, timedelta
+from decimal import Decimal
+from pathlib import Path
+
+import sqlalchemy as sa
+from flask import Flask, Blueprint, url_for, flash, redirect, session, \
+    render_template
+from flask_babel import lazy_gettext
+
+from accounting.utils.cast import s
+from . import db
+from .auth import User, current_user
+
+bp: Blueprint = Blueprint("reset", __name__, url_prefix="/")
+
+
+@bp.get("reset", endpoint="reset-page")
+def reset() -> str:
+    """Resets the sample data.
+
+    :return: Redirection to the accounting application.
+    """
+    return render_template("reset.html")
+
+
+@bp.post("sample", endpoint="sample")
+def reset_sample() -> redirect:
+    """Resets the sample data.
+
+    :return: Redirection to the accounting application.
+    """
+    __reset_database()
+    __populate_sample_data()
+    flash(s(lazy_gettext(
+        "The sample data are emptied and reset successfully.")), "success")
+    return redirect(url_for("accounting-report.default"))
+
+
+@bp.post("reset", endpoint="clean-up")
+def clean_up() -> redirect:
+    """Clean-up the database data.
+
+    :return: Redirection to the accounting application.
+    """
+    __reset_database()
+    db.session.commit()
+    flash(s(lazy_gettext("The database is emptied successfully.")), "success")
+    return redirect(url_for("accounting-report.default"))
+
+
+def __populate_sample_data() -> None:
+    """Populates the sample data.
+
+    :return: None.
+    """
+    from accounting.models import Account, JournalEntry, JournalEntryLineItem
+    file: Path = Path(__file__).parent / "data" / "sample.json"
+    with open(file) as fp:
+        json_data = json.load(fp)
+    today: date = date.today()
+    user: User | None = current_user()
+    assert user is not None
+
+    def filter_journal_entry(data: list[t.Any]) -> dict[str, t.Any]:
+        """Filters the journal entry data from JSON.
+
+        :param data: The journal entry data.
+        :return: The journal entry data from JSON.
+        """
+        return {"id": data[0],
+                "date": today - timedelta(days=data[1]),
+                "no": data[2],
+                "note": data[3],
+                "created_by_id": user.id,
+                "updated_by_id": user.id}
+
+    def filter_line_item(data: list[t.Any]) -> dict[str, t.Any]:
+        """Filters the journal entry line item data from JSON.
+
+        :param data: The journal entry line item data.
+        :return: The journal entry line item data from JSON.
+        """
+        return {"id": data[0],
+                "journal_entry_id": data[1],
+                "original_line_item_id": data[2],
+                "is_debit": data[3],
+                "no": data[4],
+                "account_id": Account.find_by_code(data[5]).id,
+                "currency_code": data[6],
+                "description": data[7],
+                "amount": Decimal(data[8])}
+
+    db.session.execute(sa.insert(JournalEntry),
+                       [filter_journal_entry(x) for x in json_data[0]])
+    db.session.execute(sa.insert(JournalEntryLineItem),
+                       [filter_line_item(x) for x in json_data[1]])
+    db.session.commit()
+
+
+def __reset_database() -> None:
+    """Resets the database.
+
+    :return: None.
+    """
+    from accounting.models import Currency, CurrencyL10n, BaseAccount, \
+        BaseAccountL10n, Account, AccountL10n, JournalEntry, \
+        JournalEntryLineItem
+    from accounting.base_account import init_base_accounts_command
+    from accounting.account import init_accounts_command
+    from accounting.currency import init_currencies_command
+
+    JournalEntryLineItem.query.delete()
+    JournalEntry.query.delete()
+    CurrencyL10n.query.delete()
+    Currency.query.delete()
+    AccountL10n.query.delete()
+    Account.query.delete()
+    BaseAccountL10n.query.delete()
+    BaseAccount.query.delete()
+    init_base_accounts_command()
+    init_accounts_command(session["user"])
+    init_currencies_command(session["user"])
+
+
+def init_app(app: Flask) -> None:
+    """Initialize the localization.
+
+    :param app: The Flask application.
+    :return: None.
+    """
+    app.register_blueprint(bp)
+

tests/test_site/templates/base.html

@@ -72,6 +72,14 @@ First written: 2023/1/27
                   </button>
                 </form>
               </li>
+              {% if current_user().username == "admin" %}
+                <li>
+                  <a class="dropdown-item {% if request.endpoint and request.endpoint.startswith("reset.") %} active {% endif %}" href="{{ url_for("reset.reset-page") }}">
+                    <i class="fa-solid fa-rotate-right"></i>
+                    {{ _("Reset") }}
+                  </a>
+                </li>
+              {% endif %}
             </ul>
           </li>
         {% else %}

tests/test_site/templates/home.html

@@ -21,4 +21,12 @@ First written: 2023/1/27
 #}
 {% extends "base.html" %}
 
-{% block header %}{% block title %}{{ _("Home") }}{% endblock %}{% endblock %}
+{% block header %}{% block title %}{{ _("Mia! Accounting Live Demonstration") }}{% endblock %}{% endblock %}
+
+{% block content %}
+
+<p>{{ _("This is the live demonstration of the Mia! Accounting project.  Please <a href=\"/login?next=%%2Faccounting\">log in</a> to continue.") }}</p>
+
+<p>{{ _("You may also want to check the <a href=\"https://mia-accounting.readthedocs.io\">full documentation</a> and the <a href=\"https://github.com/imacat/mia-accounting\">Github repository</a>.") }}</p>
+
+{% endblock %}

tests/test_site/templates/login.html

@@ -27,6 +27,9 @@ First written: 2023/1/27
 
 <form action="{{ url_for("auth.login") }}" method="post">
   <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
+  {% if request.args.next %}
+    <input type="hidden" name="next" value="{{ request.args.next }}">
+  {% endif %}
   <button class="btn btn-primary" type="submit" name="username" value="viewer">{{ _("Viewer") }}</button>
   <button class="btn btn-primary" type="submit" name="username" value="editor">{{ _("Editor") }}</button>
   <button class="btn btn-primary" type="submit" name="username" value="admin">{{ _("Administrator") }}</button>

tests/test_site/templates/reset.html

@@ -0,0 +1,48 @@
+{#
+The Mia! Accounting Demonstration Website
+reset.html: The reset page.
+
+ Copyright (c) 2023 imacat.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+
+Author: imacat@mail.imacat.idv.tw (imacat)
+First written: 2023/4/12
+#}
+{% extends "base.html" %}
+
+{% block header %}{% block title %}{{ _("Reset Database") }}{% endblock %}{% endblock %}
+
+{% block content %}
+
+<p>{{ _("Warning: All the current accounting data will be deleted.  This cannot be undone.  Please backup your database first.") }}</p>
+
+<p>{{ _("Database reset is provided by the live demonstration.  This is not part of the Mia! Accounting project.") }}</p>
+
+<form class="mb-2" action="{{ url_for("reset.clean-up") }}" method="post">
+  <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
+  {% if request.args.next %}
+    <input type="hidden" name="next" value="{{ request.args.next }}">
+  {% endif %}
+  <button class="btn btn-primary" type="submit">{{ _("Empty the Database") }}</button>
+</form>
+
+<form class="mb-2" action="{{ url_for("reset.sample") }}" method="post">
+  <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
+  {% if request.args.next %}
+    <input type="hidden" name="next" value="{{ request.args.next }}">
+  {% endif %}
+  <button class="btn btn-primary" type="submit">{{ _("Empty and reset the Sample Data") }}</button>
+</form>
+
+{% endblock %}

tests/test_site/translations/zh_Hant/LC_MESSAGES/messages.po

@@ -9,8 +9,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: mia-accounting-test-site 1.0.0\n"
 "Report-Msgid-Bugs-To: imacat@mail.imacat.idv.tw\n"
-"POT-Creation-Date: 2023-04-06 02:34+0800\n"
+"POT-Creation-Date: 2023-04-12 17:59+0800\n"
-"PO-Revision-Date: 2023-04-06 02:34+0800\n"
+"PO-Revision-Date: 2023-04-12 18:00+0800\n"
 "Last-Translator: imacat <imacat@mail.imacat.idv.tw>\n"
 "Language: zh_Hant\n"
 "Language-Team: zh_Hant <imacat@mail.imacat.idv.tw>\n"
@@ -20,12 +20,19 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Generated-By: Babel 2.12.1\n"
 
+#: tests/test_site/reset.py:55
+msgid "The sample data are emptied and reset successfully."
+msgstr "範例資料已清空重設。"
+
+#: tests/test_site/reset.py:68
+msgid "The database is emptied successfully."
+msgstr "資料庫已清空。"
+
 #: tests/test_site/templates/base.html:23
 msgid "en"
 msgstr "zh-Hant"
 
 #: tests/test_site/templates/base.html:46
-#: tests/test_site/templates/home.html:24
 msgid "Home"
 msgstr "首頁"
 
@@ -33,28 +40,76 @@ msgstr "首頁"
 msgid "Log Out"
 msgstr "登出"
 
-#: tests/test_site/templates/base.html:81
+#: tests/test_site/templates/base.html:79
+msgid "Reset"
+msgstr "重設"
+
+#: tests/test_site/templates/base.html:89
 #: tests/test_site/templates/login.html:24
 msgid "Log In"
 msgstr "登入"
 
-#: tests/test_site/templates/base.html:122
+#: tests/test_site/templates/base.html:130
 msgid "Error:"
 msgstr "錯誤："
 
-#: tests/test_site/templates/login.html:30
+#: tests/test_site/templates/home.html:24
+msgid "Mia! Accounting Live Demonstration"
+msgstr "Mia! Accounting 示範站"
+
+#: tests/test_site/templates/home.html:28
+#, python-format
+msgid ""
+"This is the live demonstration of the Mia! Accounting project.  Please <a"
+" href=\"/login?next=%%2Faccounting\">log in</a> to continue."
+msgstr "這是 Mia! Accounting 專案的示範站。請先<a href=\"/login?next=%%2Faccounting\">登入</a>。"
+
+#: tests/test_site/templates/home.html:30
+msgid ""
+"You may also want to check the <a href=\"https://mia-"
+"accounting.readthedocs.io\">full documentation</a> and the <a "
+"href=\"https://github.com/imacat/mia-accounting\">Github repository</a>."
+msgstr ""
+"詳情請參閱<a href=\"https://mia-accounting.readthedocs.io\">完整說明文件</a>與<a "
+"href=\"https://github.com/imacat/mia-accounting\">Github 專案庫</a>。"
+
+#: tests/test_site/templates/login.html:33
 msgid "Viewer"
 msgstr "讀報表者"
 
-#: tests/test_site/templates/login.html:31
+#: tests/test_site/templates/login.html:34
 msgid "Editor"
 msgstr "記帳者"
 
-#: tests/test_site/templates/login.html:32
+#: tests/test_site/templates/login.html:35
 msgid "Administrator"
 msgstr "管理者"
 
-#: tests/test_site/templates/login.html:33
+#: tests/test_site/templates/login.html:36
 msgid "Nobody"
 msgstr "沒有權限者"
 
+#: tests/test_site/templates/reset.html:24
+msgid "Reset Database"
+msgstr "資料庫重設"
+
+#: tests/test_site/templates/reset.html:28
+msgid ""
+"Warning: All the current accounting data will be deleted.  This cannot be"
+" undone.  Please backup your database first."
+msgstr "警告：現有資料會全部刪除，無法復原。請先備份您的資料。"
+
+#: tests/test_site/templates/reset.html:30
+msgid ""
+"Database reset is provided by the live demonstration.  This is not part "
+"of the Mia! Accounting project."
+msgstr "資料庫重設是示範站的功能，不是 Mia! Accounting 的功能。"
+
+#: tests/test_site/templates/reset.html:37
+msgid "Empty the Database"
+msgstr "清空資料庫"
+
+#: tests/test_site/templates/reset.html:45
+msgid "Empty and reset the Sample Data"
+msgstr "清空並重設範例資料"
+

tests/test_unmatched_offset.py

@@ -54,7 +54,7 @@ class UnmatchedOffsetTestCase(unittest.TestCase):
         :return: None.
         """
         client, csrf_token = get_client(self.app, "nobody")
-        DifferentTestData(self.app, self.client, self.csrf_token)
+        DifferentTestData(self.app, "nobody").populate()
         response: httpx.Response
 
         response = client.get(PREFIX)
@@ -73,7 +73,7 @@ class UnmatchedOffsetTestCase(unittest.TestCase):
         :return: None.
         """
         client, csrf_token = get_client(self.app, "viewer")
-        DifferentTestData(self.app, self.client, self.csrf_token)
+        DifferentTestData(self.app, "viewer").populate()
         response: httpx.Response
 
         response = client.get(PREFIX)
@@ -91,7 +91,7 @@ class UnmatchedOffsetTestCase(unittest.TestCase):
 
         :return: None.
         """
-        DifferentTestData(self.app, self.client, self.csrf_token)
+        DifferentTestData(self.app, "editor").populate()
         response: httpx.Response
 
         response = self.client.get(PREFIX)
@@ -132,8 +132,8 @@ class UnmatchedOffsetTestCase(unittest.TestCase):
         """
         from accounting.models import Account, JournalEntryLineItem
         from accounting.utils.offset_matcher import OffsetMatcher
-        data: DifferentTestData \
+        data: DifferentTestData = DifferentTestData(self.app, "editor")
-            = DifferentTestData(self.app, self.client, self.csrf_token)
+        data.populate()
         account: Account | None
         line_item: JournalEntryLineItem | None
         matcher: OffsetMatcher
@@ -248,8 +248,8 @@ class UnmatchedOffsetTestCase(unittest.TestCase):
         """
         from accounting.models import Account, JournalEntryLineItem
         from accounting.utils.offset_matcher import OffsetMatcher
-        data: SameTestData \
+        data: SameTestData = SameTestData(self.app, "editor")
-            = SameTestData(self.app, self.client, self.csrf_token)
+        data.populate()
         account: Account | None
         line_item: JournalEntryLineItem | None
         matcher: OffsetMatcher
@@ -483,14 +483,12 @@ class DifferentTestData(BaseTestData):
             5, [JournalEntryCurrencyData(
                 "USD", [self.l_p_of5d], [self.l_p_of5c])])
 
-        self._set_need_offset({Accounts.RECEIVABLE, Accounts.PAYABLE}, False)
         self._add_journal_entry(self.j_r_of1)
         self._add_journal_entry(self.j_r_of2)
         self._add_journal_entry(self.j_r_of3)
         self._add_journal_entry(self.j_p_of1)
         self._add_journal_entry(self.j_p_of2)
         self._add_journal_entry(self.j_p_of3)
-        self._set_need_offset({Accounts.RECEIVABLE, Accounts.PAYABLE}, True)
 
 
 class SameTestData(BaseTestData):
@@ -525,8 +523,6 @@ class SameTestData(BaseTestData):
         self.l_p_or6d, self.l_p_or6c = self._add_simple_journal_entry(
             10, "USD", "Steak", "120", Accounts.MEAL, Accounts.PAYABLE)
 
-        self._set_need_offset({Accounts.RECEIVABLE, Accounts.PAYABLE}, False)
-
         # Receivable offset items
         self.l_r_of1d, self.l_r_of1c = self._add_simple_journal_entry(
             65, "USD", "Noodles", "100", Accounts.CASH, Accounts.RECEIVABLE)
@@ -563,6 +559,5 @@ class SameTestData(BaseTestData):
         self.l_p_of6d, self.l_p_of6c = self._add_simple_journal_entry(
             15, "USD", "Steak", "120", Accounts.PAYABLE, Accounts.CASH)
 
-        self._set_need_offset({Accounts.RECEIVABLE, Accounts.PAYABLE}, True)
         self._add_journal_entry(j_r_of3)
         self._add_journal_entry(j_p_of3)

tests/testlib.py

@@ -19,17 +19,21 @@
 """
 from __future__ import annotations
 
+import json
 import re
 import typing as t
 from abc import ABC, abstractmethod
 from datetime import date, timedelta
+from secrets import randbelow
 
-from _decimal import Decimal
+from decimal import Decimal
+import sqlalchemy as sa
 
 import httpx
 from flask import Flask, render_template_string
 
 from test_site import create_app, db
+from test_site.auth import User
 
 TEST_SERVER: str = "https://testserver"
 """The test server URI."""
@@ -44,6 +48,7 @@ class Accounts:
     BANK: str = "1113-001"
     NOTES_RECEIVABLE: str = "1131-001"
     RECEIVABLE: str = "1141-001"
+    MACHINERY: str = "1441-001"
     PREPAID: str = "1258-001"
     NOTES_PAYABLE: str = "2131-001"
     PAYABLE: str = "2141-001"
@@ -103,6 +108,7 @@ def get_client(app: Flask, username: str) -> tuple[httpx.Client, str]:
     csrf_token: str = get_csrf_token(client)
     response: httpx.Response = client.post("/login",
                                            data={"csrf_token": csrf_token,
+                                                 "next": "/",
                                                  "username": username})
     assert response.status_code == 302
     assert response.headers["Location"] == "/"
@@ -162,7 +168,7 @@ def match_journal_entry_detail(location: str) -> int:
 class JournalEntryLineItemData:
     """The journal entry line item data."""
 
-    def __init__(self, account: str, description: str, amount: str,
+    def __init__(self, account: str, description: str | None, amount: str,
                  original_line_item: JournalEntryLineItemData | None = None):
         """Constructs the journal entry line item data.
 
@@ -177,7 +183,7 @@ class JournalEntryLineItemData:
         self.original_line_item: JournalEntryLineItemData | None \
             = original_line_item
         self.account: str = account
-        self.description: str = description
+        self.description: str | None = description
         self.amount: Decimal = Decimal(amount)
 
     def form(self, prefix: str, debit_credit: str, index: int,
@@ -293,17 +299,21 @@ class JournalEntryData:
 class BaseTestData(ABC):
     """The base test data."""
 
-    def __init__(self, app: Flask, client: httpx.Client, csrf_token: str):
+    def __init__(self, app: Flask, username: str):
         """Constructs the test data.
 
         :param app: The Flask application.
-        :param client: The client.
+        :param username: The username.
-        :param csrf_token: The CSRF token.
         """
-        self.app: Flask = app
+        self.__app: Flask = app
-        self.client: httpx.Client = client
+        with self.__app.app_context():
-        self.csrf_token: str = csrf_token
+            current_user: User | None = User.query\
-        self._init_data()
+                .filter(User.username == username).first()
+            assert current_user is not None
+            self.__current_user_id: int = current_user.id
+            self.__journal_entries: list[dict[str, t.Any]] = []
+            self.__line_items: list[dict[str, t.Any]] = []
+            self._init_data()
 
     @abstractmethod
     def _init_data(self) -> None:
@@ -312,6 +322,61 @@ class BaseTestData(ABC):
         :return: None
         """
 
+    def populate(self) -> None:
+        """Populates the data into the database.
+
+        :return: None
+        """
+        from accounting.models import JournalEntry, JournalEntryLineItem
+        with self.__app.app_context():
+            db.session.execute(sa.insert(JournalEntry), self.__journal_entries)
+            db.session.execute(sa.insert(JournalEntryLineItem),
+                               self.__line_items)
+            db.session.commit()
+
+    def json(self) -> str:
+        """Returns the data as JSON.
+
+        :return: The JSON string.
+        """
+        from accounting.models import Account
+        today: date = date.today()
+
+        def filter_journal_entry(data: dict[str, t.Any]) -> list[t.Any]:
+            """Filters the journal entry data for JSON encoding.
+
+            :param data: The journal entry data.
+            :return: The journal entry data for JSON encoding.
+            """
+            data = data.copy()
+            data["date"] = (today - data["date"]).days
+            del data["created_by_id"]
+            del data["updated_by_id"]
+            return [data[x] for x in ["id", "date", "no", "note"]]
+
+        def filter_line_item(data: dict[str, t.Any]) -> list[t.Any]:
+            """Filters the journal entry line item data for JSON encoding.
+
+            :param data: The journal entry line item data.
+            :return: The journal entry line item data for JSON encoding.
+            """
+            data = data.copy()
+            with self.__app.app_context():
+                data["account_id"] \
+                    = db.session.get(Account, data["account_id"]).code
+            data["amount"] = str(data["amount"])
+            if "original_line_item_id" not in data:
+                data["original_line_item_id"] = None
+            return [data[x] for x in ["id", "journal_entry_id",
+                                      "original_line_item_id", "is_debit",
+                                      "no", "account_id", "currency_code",
+                                      "description", "amount"]]
+
+        return json.dumps(
+            [[filter_journal_entry(x) for x in self.__journal_entries],
+             [filter_line_item(x) for x in self.__line_items]],
+            ensure_ascii=False, separators=(",", ":"))
+
     @staticmethod
     def _couple(description: str, amount: str, debit: str, credit: str) \
             -> tuple[JournalEntryLineItemData, JournalEntryLineItemData]:
@@ -332,26 +397,82 @@ class BaseTestData(ABC):
         :param journal_entry_data: The journal entry data.
         :return: None.
         """
-        from accounting.models import JournalEntry
+        from accounting.models import Account
-        store_uri: str = "/accounting/journal-entries/store/transfer"
+        existing_j_id: set[int] = {x["id"] for x in self.__journal_entries}
+        existing_l_id: set[int] = {x["id"] for x in self.__line_items}
+        journal_entry_data.id = self.__new_id(existing_j_id)
+        j_date: date = date.today() - timedelta(days=journal_entry_data.days)
+        self.__journal_entries.append(
+            {"id": journal_entry_data.id,
+             "date": j_date,
+             "no": self.__next_j_no(j_date),
+             "note": journal_entry_data.note,
+             "created_by_id": self.__current_user_id,
+             "updated_by_id": self.__current_user_id})
+        debit_no: int = 0
+        credit_no: int = 0
+        for currency in journal_entry_data.currencies:
+            for line_item in currency.debit:
+                account: Account | None \
+                    = Account.find_by_code(line_item.account)
+                assert account is not None
+                debit_no = debit_no + 1
+                line_item.id = self.__new_id(existing_l_id)
+                data: dict[str, t.Any] \
+                    = {"id": line_item.id,
+                       "journal_entry_id": journal_entry_data.id,
+                       "is_debit": True,
+                       "no": debit_no,
+                       "account_id": account.id,
+                       "currency_code": currency.code,
+                       "description": line_item.description,
+                       "amount": line_item.amount}
+                if line_item.original_line_item is not None:
+                    data["original_line_item_id"] \
+                        = line_item.original_line_item.id
+                self.__line_items.append(data)
+            for line_item in currency.credit:
+                account: Account | None \
+                    = Account.find_by_code(line_item.account)
+                assert account is not None
+                credit_no = credit_no + 1
+                line_item.id = self.__new_id(existing_l_id)
+                data: dict[str, t.Any] \
+                    = {"id": line_item.id,
+                       "journal_entry_id": journal_entry_data.id,
+                       "is_debit": False,
+                       "no": credit_no,
+                       "account_id": account.id,
+                       "currency_code": currency.code,
+                       "description": line_item.description,
+                       "amount": line_item.amount}
+                if line_item.original_line_item is not None:
+                    data["original_line_item_id"] \
+                        = line_item.original_line_item.id
+                self.__line_items.append(data)
 
-        response: httpx.Response = self.client.post(
+    @staticmethod
-            store_uri, data=journal_entry_data.new_form(self.csrf_token))
+    def __new_id(existing_id: set[int]) -> int:
-        assert response.status_code == 302
+        """Generates and returns a new random unique ID.
-        journal_entry_id: int \
+
-            = match_journal_entry_detail(response.headers["Location"])
+        :param existing_id: The existing ID.
-        journal_entry_data.id = journal_entry_id
+        :return: The newly-generated random unique ID.
-        with self.app.app_context():
+        """
-            journal_entry: JournalEntry | None \
+        while True:
-                = db.session.get(JournalEntry, journal_entry_id)
+            obj_id: int = 100000000 + randbelow(900000000)
-            assert journal_entry is not None
+            if obj_id not in existing_id:
-            for i in range(len(journal_entry.currencies)):
+                existing_id.add(obj_id)
-                for j in range(len(journal_entry.currencies[i].debit)):
+                return obj_id
-                    journal_entry_data.currencies[i].debit[j].id \
+
-                        = journal_entry.currencies[i].debit[j].id
+    def __next_j_no(self, j_date: date) -> int:
-                for j in range(len(journal_entry.currencies[i].credit)):
+        """Returns the next journal entry number in a day.
-                    journal_entry_data.currencies[i].credit[j].id \
+
-                        = journal_entry.currencies[i].credit[j].id
+        :param j_date: The journal entry date.
+        :return: The next journal entry number.
+        """
+        existing: set[int] = {x["no"] for x in self.__journal_entries
+                              if x["date"] == j_date}
+        return 1 if len(existing) == 0 else max(existing) + 1
 
     def _add_simple_journal_entry(
             self, days: int, currency: str, description: str, amount: str,
@@ -373,20 +494,3 @@ class BaseTestData(ABC):
             days, [JournalEntryCurrencyData(
                 currency, [debit_item], [credit_item])]))
         return debit_item, credit_item
-
-    def _set_need_offset(self, account_codes: set[str],
-                         is_need_offset: bool) -> None:
-        """Sets whether the line items in some accounts need offset.
-
-        :param account_codes: The account codes.
-        :param is_need_offset: True if the line items in the accounts need
-            offset, or False otherwise.
-        :return:
-        """
-        from accounting.models import Account
-        with self.app.app_context():
-            for code in account_codes:
-                account: Account | None = Account.find_by_code(code)
-                assert account is not None
-                account.is_need_offset = is_need_offset
-            db.session.commit()