Rename income to flow

Modeling income and expenses separately does not make sense since the
only difference is the sign of the amount. Separate definitions would
lead to a lot of duplicated code.

2 files changed, 5 insertions, 5 deletions

diff --git a/finance/income.py b/finance/flow.py
index 8d775cb..fb28228 100644
--- a/finance/income.py
+++ b/finance/flow.py
@@ -4,13 +4,13 @@ from decimal import Decimal
 
 
 @dataclasses.dataclass(kw_only=True, frozen=True)
-class Income:
-    """Income models financial income paid on the first day of a month"""
+class Flow:
+    """Time-discrete flow of money paid on the first day of a month"""
 
     amount: Decimal
 
     def integrate(self, start: datetime, end: datetime) -> Decimal:
-        """Integrate the income from a start to an end date"""
+        """Integrate the flow between two dates to an amount of money"""
 
         retval = Decimal(0.0)
 
diff --git a/finance/test_income.py b/finance/test_flow.py
index fc75bef..aad4e74 100644
--- a/finance/test_income.py
+++ b/finance/test_flow.py
@@ -1,11 +1,11 @@
 from datetime import datetime
 from decimal import Decimal
 
-from finance import income
+from finance import flow
 
 
 def test_income_integration() -> None:
-    inc = income.Income(amount=Decimal(3000.0))
+    inc = flow.Flow(amount=Decimal(3000.0))
 
     tests = (
         (datetime(2024, 3, 12), datetime(2024, 4, 2), Decimal(3000.0)),