refactor: Add JobSummary and Transaction models, client to get currency exchange rate

tests/services/test_csv_parser.py

@@ -5,23 +5,30 @@ from app.utils.csv_parser import parse_and_validate_csv
 
 def test_parse_valid_csv():
     valid_csv = (
-        "transaction_id,date,amount,category,description\n"
-        "TX1001,2026-06-25,120.50,Groceries,Weekly grocery shop\n"
-        "TX1002,06/26/2026,15.00,Coffee,Morning latte\n"
+        "transaction_id,date,amount,category,description,currency,account\n"
+        "TX1001,2026-06-25,120.50,Groceries,Weekly grocery shop,INR,ACC01\n"
+        "TX1002,06/26/2026,15.00,Coffee,Morning latte,USD,ACC02\n"
     )
     result = parse_and_validate_csv(valid_csv.encode("utf-8"))
     assert len(result) == 2
-    assert result[0]["transaction_id"] == "TX1001"
+    assert result[0]["txn_id"] == "TX1001"
     assert result[0]["amount"] == 120.50
     assert result[0]["date"] == "2026-06-25"
-    assert result[1]["transaction_id"] == "TX1002"
+    assert result[0]["merchant"] == "Weekly grocery shop"
+    assert result[0]["currency"] == "INR"
+    assert result[0]["account_id"] == "ACC01"
+
+    assert result[1]["txn_id"] == "TX1002"
     assert result[1]["amount"] == 15.00
     assert result[1]["date"] == "2026-06-26"
+    assert result[1]["merchant"] == "Morning latte"
+    assert result[1]["currency"] == "USD"
+    assert result[1]["account_id"] == "ACC02"
 
 
 def test_parse_missing_headers():
     invalid_csv = (
-        "transaction_id,amount,category,description\n"
+        "txn_id,amount,category,description\n"
         "TX1001,120.50,Groceries,Weekly grocery shop\n"
     )
     with pytest.raises(InvalidCSVException) as exc_info:
@@ -31,8 +38,7 @@ def test_parse_missing_headers():
 
 def test_parse_invalid_amount():
     invalid_csv = (
-        "transaction_id,date,amount,category,description\n"
-        "TX1001,2026-06-25,abc,Groceries,Weekly grocery shop\n"
+        "txn_id,date,amount,merchant\nTX1001,2026-06-25,abc,Weekly grocery shop\n"
     )
     with pytest.raises(InvalidCSVException) as exc_info:
         parse_and_validate_csv(invalid_csv.encode("utf-8"))
@@ -41,8 +47,7 @@ def test_parse_invalid_amount():
 
 def test_parse_invalid_date():
     invalid_csv = (
-        "transaction_id,date,amount,category,description\n"
-        "TX1001,invalid-date,120.50,Groceries,Weekly grocery shop\n"
+        "txn_id,date,amount,merchant\nTX1001,invalid-date,120.50,Weekly grocery shop\n"
     )
     with pytest.raises(InvalidCSVException) as exc_info:
         parse_and_validate_csv(invalid_csv.encode("utf-8"))

tests/services/test_exchange_rate.py

@@ -0,0 +1,12 @@
+import pytest
+from app.clients.exchange_rate_client import ExchangeRateClient
+
+pytestmark = pytest.mark.asyncio
+
+
+async def test_get_usd_to_inr_rate():
+    client = ExchangeRateClient()
+    rate = await client.get_usd_to_inr_rate()
+    assert isinstance(rate, float)
+    # The rate should be positive (either the fetched rate or the default fallback of 83.0)
+    assert rate > 0.0