Moved the JournalEntryLineItemData, JournalEntryCurrencyData, JournalEntryData, and BaseTestData classes from testlib.py to the ".lib" module in the test site.

tests/make-sample.py

@@ -25,9 +25,9 @@ from pathlib import Path
 
 import click
 
-from testlib import Accounts, create_test_app, JournalEntryLineItemData, \
+from test_site.lib import JournalEntryLineItemData, JournalEntryCurrencyData, \
-    JournalEntryCurrencyData, JournalEntryData, \
+    JournalEntryData, BaseTestData
-    BaseTestData
+from testlib import Accounts, create_test_app
 
 
 @click.command()

tests/test_offset.py

@@ -26,9 +26,10 @@ import httpx
 from flask import Flask
 
 from test_site import db
+from test_site.lib import JournalEntryLineItemData, JournalEntryCurrencyData, \
+    JournalEntryData, BaseTestData
 from testlib import NEXT_URI, Accounts, create_test_app, get_client, \
-    match_journal_entry_detail, JournalEntryLineItemData, \
+    match_journal_entry_detail
-    JournalEntryCurrencyData, JournalEntryData, BaseTestData
 
 PREFIX: str = "/accounting/journal-entries"
 """The URL prefix for the journal entry management."""

tests/test_report.py

@@ -23,7 +23,8 @@ from datetime import date
 import httpx
 from flask import Flask
 
-from testlib import create_test_app, get_client, Accounts, BaseTestData
+from test_site.lib import BaseTestData
+from testlib import create_test_app, get_client, Accounts
 
 PREFIX: str = "/accounting"
 """The URL prefix for the reports."""

tests/test_site/lib.py

@@ -0,0 +1,362 @@
+# The Mia! Accounting Demonstration Website.
+# Author: imacat@mail.imacat.idv.tw (imacat), 2023/4/13
+
+#  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 common library for the Mia! Accounting demonstration website.
+
+"""
+from __future__ import annotations
+
+import typing as t
+from abc import ABC, abstractmethod
+from datetime import date, timedelta
+from decimal import Decimal
+from secrets import randbelow
+
+import sqlalchemy as sa
+from flask import Flask
+
+from . import db
+from .auth import User
+
+
+class JournalEntryLineItemData:
+    """The journal entry line item data."""
+
+    def __init__(self, account: str, description: str | None, amount: str,
+                 original_line_item: JournalEntryLineItemData | None = None):
+        """Constructs the journal entry line item data.
+
+        :param account: The account code.
+        :param description: The description.
+        :param amount: The amount.
+        :param original_line_item: The original journal entry line item.
+        """
+        self.journal_entry: JournalEntryData | None = None
+        self.id: int = -1
+        self.no: int = -1
+        self.original_line_item: JournalEntryLineItemData | None \
+            = original_line_item
+        self.account: str = account
+        self.description: str | None = description
+        self.amount: Decimal = Decimal(amount)
+
+    def form(self, prefix: str, debit_credit: str, index: int,
+             is_update: bool) -> dict[str, str]:
+        """Returns the line item as form data.
+
+        :param prefix: The prefix of the form fields.
+        :param debit_credit: Either "debit" or "credit".
+        :param index: The line item index.
+        :param is_update: True for an update operation, or False otherwise
+        :return: The form data.
+        """
+        prefix = f"{prefix}-{debit_credit}-{index}"
+        form: dict[str, str] = {f"{prefix}-account_code": self.account,
+                                f"{prefix}-description": self.description,
+                                f"{prefix}-amount": str(self.amount)}
+        if is_update and self.id != -1:
+            form[f"{prefix}-id"] = str(self.id)
+        form[f"{prefix}-no"] = str(index) if self.no == -1 else str(self.no)
+        if self.original_line_item is not None:
+            assert self.original_line_item.id != -1
+            form[f"{prefix}-original_line_item_id"] \
+                = str(self.original_line_item.id)
+        return form
+
+
+class JournalEntryCurrencyData:
+    """The journal entry currency data."""
+
+    def __init__(self, currency: str, debit: list[JournalEntryLineItemData],
+                 credit: list[JournalEntryLineItemData]):
+        """Constructs the journal entry currency data.
+
+        :param currency: The currency code.
+        :param debit: The debit line items.
+        :param credit: The credit line items.
+        """
+        self.code: str = currency
+        self.debit: list[JournalEntryLineItemData] = debit
+        self.credit: list[JournalEntryLineItemData] = credit
+
+    def form(self, index: int, is_update: bool) -> dict[str, str]:
+        """Returns the currency as form data.
+
+        :param index: The currency index.
+        :param is_update: True for an update operation, or False otherwise
+        :return: The form data.
+        """
+        prefix: str = f"currency-{index}"
+        form: dict[str, str] = {f"{prefix}-code": self.code}
+        for i in range(len(self.debit)):
+            form.update(self.debit[i].form(prefix, "debit", i + 1, is_update))
+        for i in range(len(self.credit)):
+            form.update(self.credit[i].form(prefix, "credit", i + 1,
+                                            is_update))
+        return form
+
+
+class JournalEntryData:
+    """The journal entry data."""
+
+    def __init__(self, days: int, currencies: list[JournalEntryCurrencyData]):
+        """Constructs a journal entry.
+
+        :param days: The number of days before today.
+        :param currencies: The journal entry currency data.
+        """
+        self.id: int = -1
+        self.days: int = days
+        self.currencies: list[JournalEntryCurrencyData] = currencies
+        self.note: str | None = None
+        for currency in self.currencies:
+            for line_item in currency.debit:
+                line_item.journal_entry = self
+            for line_item in currency.credit:
+                line_item.journal_entry = self
+
+    def new_form(self, csrf_token: str, next_uri: str) -> dict[str, str]:
+        """Returns the journal entry as a creation form.
+
+        :param csrf_token: The CSRF token.
+        :param next_uri: The next URI.
+        :return: The journal entry as a creation form.
+        """
+        return self.__form(csrf_token, next_uri, is_update=False)
+
+    def update_form(self, csrf_token: str, next_uri: str) -> dict[str, str]:
+        """Returns the journal entry as an update form.
+
+        :param csrf_token: The CSRF token.
+        :param next_uri: The next URI.
+        :return: The journal entry as an update form.
+        """
+        return self.__form(csrf_token, next_uri, is_update=True)
+
+    def __form(self, csrf_token: str, next_uri: str, is_update: bool = False) \
+            -> dict[str, str]:
+        """Returns the journal entry as a form.
+
+        :param csrf_token: The CSRF token.
+        :param next_uri: The next URI.
+        :param is_update: True for an update operation, or False otherwise
+        :return: The journal entry as a form.
+        """
+        journal_entry_date: date = date.today() - timedelta(days=self.days)
+        form: dict[str, str] = {"csrf_token": csrf_token,
+                                "next": next_uri,
+                                "date": journal_entry_date.isoformat()}
+        for i in range(len(self.currencies)):
+            form.update(self.currencies[i].form(i + 1, is_update))
+        if self.note is not None:
+            form["note"] = self.note
+        return form
+
+
+class BaseTestData(ABC):
+    """The base test data."""
+
+    def __init__(self, app: Flask, username: str):
+        """Constructs the test data.
+
+        :param app: The Flask application.
+        :param username: The username.
+        """
+        self._app: Flask = app
+        with self._app.app_context():
+            current_user: User | None = User.query\
+                .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:
+        """Initializes the test data.
+
+        :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()
+
+    @property
+    def csv_data(self) -> tuple[list[dict[str, t.Any]],
+                                list[dict[str, t.Any]]]:
+        """Returns the data for CSV.
+
+        :return: The data for CSV.
+        """
+        from accounting.models import Account
+        today: date = date.today()
+
+        def filter_journal_entry(data: dict[str, t.Any]) -> dict[str, 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
+
+        def filter_line_item(data: dict[str, t.Any]) -> dict[str, 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
+            if "original_line_item_id" not in data:
+                data["original_line_item_id"] = None
+            return data
+
+        return [filter_journal_entry(x) for x in self._journal_entries], \
+            [filter_line_item(x) for x in self._line_items]
+
+    @staticmethod
+    def _couple(description: str, amount: str, debit: str, credit: str) \
+            -> tuple[JournalEntryLineItemData, JournalEntryLineItemData]:
+        """Returns a couple of debit-credit line items.
+
+        :param description: The description.
+        :param amount: The amount.
+        :param debit: The debit account code.
+        :param credit: The credit account code.
+        :return: The debit line item and credit line item.
+        """
+        return JournalEntryLineItemData(debit, description, amount),\
+            JournalEntryLineItemData(credit, description, amount)
+
+    def _add_journal_entry(self, journal_entry_data: JournalEntryData) -> None:
+        """Adds a journal entry.
+
+        :param journal_entry_data: The journal entry data.
+        :return: None.
+        """
+        from accounting.models import Account
+        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)
+
+    @staticmethod
+    def __new_id(existing_id: set[int]) -> int:
+        """Generates and returns a new random unique ID.
+
+        :param existing_id: The existing ID.
+        :return: The newly-generated random unique ID.
+        """
+        while True:
+            obj_id: int = 100000000 + randbelow(900000000)
+            if obj_id not in existing_id:
+                existing_id.add(obj_id)
+                return obj_id
+
+    def __next_j_no(self, j_date: date) -> int:
+        """Returns the next journal entry number in a day.
+
+        :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,
+            debit: str, credit: str) \
+            -> tuple[JournalEntryLineItemData, JournalEntryLineItemData]:
+        """Adds a simple journal entry.
+
+        :param days: The number of days before today.
+        :param currency: The currency code.
+        :param description: The description.
+        :param amount: The amount.
+        :param debit: The debit account code.
+        :param credit: The credit account code.
+        :return: The debit line item and credit line item.
+        """
+        debit_item, credit_item = self._couple(
+            description, amount, debit, credit)
+        self._add_journal_entry(JournalEntryData(
+            days, [JournalEntryCurrencyData(
+                currency, [debit_item], [credit_item])]))
+        return debit_item, credit_item

tests/test_unmatched_offset.py

@@ -23,8 +23,9 @@ import httpx
 from flask import Flask
 
 from test_site import db
-from testlib import create_test_app, get_client, Accounts, \
+from test_site.lib import JournalEntryCurrencyData, JournalEntryData, \
-    JournalEntryCurrencyData, JournalEntryData, BaseTestData
+    BaseTestData
+from testlib import create_test_app, get_client, Accounts
 
 PREFIX: str = "/accounting/unmatched-offsets"
 """The URL prefix for the unmatched offset management."""

tests/testlib.py

@@ -21,17 +21,11 @@ from __future__ import annotations
 
 import re
 import typing as t
-from abc import ABC, abstractmethod
-from datetime import date, timedelta
-from decimal import Decimal
-from secrets import randbelow
 
 import httpx
-import sqlalchemy as sa
 from flask import Flask, render_template_string
 
-from test_site import create_app, db
+from test_site import create_app
-from test_site.auth import User
 
 TEST_SERVER: str = "https://testserver"
 """The test server URI."""
@@ -161,333 +155,3 @@ def match_journal_entry_detail(location: str) -> int:
         r"^/accounting/journal-entries/(\d+)\?next=%2F_next", location)
     assert m is not None
     return int(m.group(1))
-
-
-class JournalEntryLineItemData:
-    """The journal entry line item data."""
-
-    def __init__(self, account: str, description: str | None, amount: str,
-                 original_line_item: JournalEntryLineItemData | None = None):
-        """Constructs the journal entry line item data.
-
-        :param account: The account code.
-        :param description: The description.
-        :param amount: The amount.
-        :param original_line_item: The original journal entry line item.
-        """
-        self.journal_entry: JournalEntryData | None = None
-        self.id: int = -1
-        self.no: int = -1
-        self.original_line_item: JournalEntryLineItemData | None \
-            = original_line_item
-        self.account: str = account
-        self.description: str | None = description
-        self.amount: Decimal = Decimal(amount)
-
-    def form(self, prefix: str, debit_credit: str, index: int,
-             is_update: bool) -> dict[str, str]:
-        """Returns the line item as form data.
-
-        :param prefix: The prefix of the form fields.
-        :param debit_credit: Either "debit" or "credit".
-        :param index: The line item index.
-        :param is_update: True for an update operation, or False otherwise
-        :return: The form data.
-        """
-        prefix = f"{prefix}-{debit_credit}-{index}"
-        form: dict[str, str] = {f"{prefix}-account_code": self.account,
-                                f"{prefix}-description": self.description,
-                                f"{prefix}-amount": str(self.amount)}
-        if is_update and self.id != -1:
-            form[f"{prefix}-id"] = str(self.id)
-        form[f"{prefix}-no"] = str(index) if self.no == -1 else str(self.no)
-        if self.original_line_item is not None:
-            assert self.original_line_item.id != -1
-            form[f"{prefix}-original_line_item_id"] \
-                = str(self.original_line_item.id)
-        return form
-
-
-class JournalEntryCurrencyData:
-    """The journal entry currency data."""
-
-    def __init__(self, currency: str, debit: list[JournalEntryLineItemData],
-                 credit: list[JournalEntryLineItemData]):
-        """Constructs the journal entry currency data.
-
-        :param currency: The currency code.
-        :param debit: The debit line items.
-        :param credit: The credit line items.
-        """
-        self.code: str = currency
-        self.debit: list[JournalEntryLineItemData] = debit
-        self.credit: list[JournalEntryLineItemData] = credit
-
-    def form(self, index: int, is_update: bool) -> dict[str, str]:
-        """Returns the currency as form data.
-
-        :param index: The currency index.
-        :param is_update: True for an update operation, or False otherwise
-        :return: The form data.
-        """
-        prefix: str = f"currency-{index}"
-        form: dict[str, str] = {f"{prefix}-code": self.code}
-        for i in range(len(self.debit)):
-            form.update(self.debit[i].form(prefix, "debit", i + 1, is_update))
-        for i in range(len(self.credit)):
-            form.update(self.credit[i].form(prefix, "credit", i + 1,
-                                            is_update))
-        return form
-
-
-class JournalEntryData:
-    """The journal entry data."""
-
-    def __init__(self, days: int, currencies: list[JournalEntryCurrencyData]):
-        """Constructs a journal entry.
-
-        :param days: The number of days before today.
-        :param currencies: The journal entry currency data.
-        """
-        self.id: int = -1
-        self.days: int = days
-        self.currencies: list[JournalEntryCurrencyData] = currencies
-        self.note: str | None = None
-        for currency in self.currencies:
-            for line_item in currency.debit:
-                line_item.journal_entry = self
-            for line_item in currency.credit:
-                line_item.journal_entry = self
-
-    def new_form(self, csrf_token: str, next_uri: str) -> dict[str, str]:
-        """Returns the journal entry as a creation form.
-
-        :param csrf_token: The CSRF token.
-        :param next_uri: The next URI.
-        :return: The journal entry as a creation form.
-        """
-        return self.__form(csrf_token, next_uri, is_update=False)
-
-    def update_form(self, csrf_token: str, next_uri: str) -> dict[str, str]:
-        """Returns the journal entry as an update form.
-
-        :param csrf_token: The CSRF token.
-        :param next_uri: The next URI.
-        :return: The journal entry as an update form.
-        """
-        return self.__form(csrf_token, next_uri, is_update=True)
-
-    def __form(self, csrf_token: str, next_uri: str, is_update: bool = False) \
-            -> dict[str, str]:
-        """Returns the journal entry as a form.
-
-        :param csrf_token: The CSRF token.
-        :param next_uri: The next URI.
-        :param is_update: True for an update operation, or False otherwise
-        :return: The journal entry as a form.
-        """
-        journal_entry_date: date = date.today() - timedelta(days=self.days)
-        form: dict[str, str] = {"csrf_token": csrf_token,
-                                "next": next_uri,
-                                "date": journal_entry_date.isoformat()}
-        for i in range(len(self.currencies)):
-            form.update(self.currencies[i].form(i + 1, is_update))
-        if self.note is not None:
-            form["note"] = self.note
-        return form
-
-
-class BaseTestData(ABC):
-    """The base test data."""
-
-    def __init__(self, app: Flask, username: str):
-        """Constructs the test data.
-
-        :param app: The Flask application.
-        :param username: The username.
-        """
-        self._app: Flask = app
-        with self._app.app_context():
-            current_user: User | None = User.query\
-                .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:
-        """Initializes the test data.
-
-        :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()
-
-    @property
-    def csv_data(self) -> tuple[list[dict[str, t.Any]],
-                                list[dict[str, t.Any]]]:
-        """Returns the data for CSV.
-
-        :return: The data for CSV.
-        """
-        from accounting.models import Account
-        today: date = date.today()
-
-        def filter_journal_entry(data: dict[str, t.Any]) -> dict[str, 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
-
-        def filter_line_item(data: dict[str, t.Any]) -> dict[str, 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
-            if "original_line_item_id" not in data:
-                data["original_line_item_id"] = None
-            return data
-
-        return [filter_journal_entry(x) for x in self._journal_entries], \
-            [filter_line_item(x) for x in self._line_items]
-
-    @staticmethod
-    def _couple(description: str, amount: str, debit: str, credit: str) \
-            -> tuple[JournalEntryLineItemData, JournalEntryLineItemData]:
-        """Returns a couple of debit-credit line items.
-
-        :param description: The description.
-        :param amount: The amount.
-        :param debit: The debit account code.
-        :param credit: The credit account code.
-        :return: The debit line item and credit line item.
-        """
-        return JournalEntryLineItemData(debit, description, amount),\
-            JournalEntryLineItemData(credit, description, amount)
-
-    def _add_journal_entry(self, journal_entry_data: JournalEntryData) -> None:
-        """Adds a journal entry.
-
-        :param journal_entry_data: The journal entry data.
-        :return: None.
-        """
-        from accounting.models import Account
-        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)
-
-    @staticmethod
-    def __new_id(existing_id: set[int]) -> int:
-        """Generates and returns a new random unique ID.
-
-        :param existing_id: The existing ID.
-        :return: The newly-generated random unique ID.
-        """
-        while True:
-            obj_id: int = 100000000 + randbelow(900000000)
-            if obj_id not in existing_id:
-                existing_id.add(obj_id)
-                return obj_id
-
-    def __next_j_no(self, j_date: date) -> int:
-        """Returns the next journal entry number in a day.
-
-        :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,
-            debit: str, credit: str) \
-            -> tuple[JournalEntryLineItemData, JournalEntryLineItemData]:
-        """Adds a simple journal entry.
-
-        :param days: The number of days before today.
-        :param currency: The currency code.
-        :param description: The description.
-        :param amount: The amount.
-        :param debit: The debit account code.
-        :param credit: The credit account code.
-        :return: The debit line item and credit line item.
-        """
-        debit_item, credit_item = self._couple(
-            description, amount, debit, credit)
-        self._add_journal_entry(JournalEntryData(
-            days, [JournalEntryCurrencyData(
-                currency, [debit_item], [credit_item])]))
-        return debit_item, credit_item