diff --git a/golden_tests/TestFinBond.py b/golden_tests/TestFinBond.py
index 52dd1b94..e3e80fe1 100644
--- a/golden_tests/TestFinBond.py
+++ b/golden_tests/TestFinBond.py
@@ -556,9 +556,8 @@ def test_bond_payment_dates():
 
 def test_bond_ror():
 
-    test_case_file = 'test_cases_bond_ror.csv'
-    df = pd.read_csv('.//data//' + test_case_file, parse_dates=['buy_date',
-                                                                'sell_date'])
+    path = os.path.join(os.path.dirname(__file__), './/data//test_cases_bond_ror.csv')
+    df = pd.read_csv(path, parse_dates=['buy_date','sell_date'])
     # A 10-year bond with 1 coupon per year. code: 210215
 
     bond = Bond(
diff --git a/golden_tests/TestFinBondZeroCoupon.py b/golden_tests/TestFinBondZeroCoupon.py
index b3538d9c..da120e81 100644
--- a/golden_tests/TestFinBondZeroCoupon.py
+++ b/golden_tests/TestFinBondZeroCoupon.py
@@ -2,7 +2,9 @@
 # Copyright (C) 2018, 2019, 2020 Dominic O'Kane
 ###############################################################################
 
+import os
 import sys
+
 import pandas as pd
 sys.path.append("..")
 
@@ -50,8 +52,9 @@ def test_bond_zero():
 
 
 def test_bond_zero_ror():
-    test_case_file = 'test_cases_bond_zero_ror.csv'
-    df = pd.read_csv('.//data//' + test_case_file, parse_dates=['buy_date', 'sell_date'])
+
+    path = os.path.join(os.path.dirname(__file__), './/data//test_cases_bond_ror.csv')
+    df = pd.read_csv(path, parse_dates=['buy_date', 'sell_date'])
     # A 1-year bond with zero coupon per year. code: 092103011
     bond = BondZero(
         issue_dt=Date(23, 7, 2021),
diff --git a/golden_tests/TestFinBondZeroCurve.py b/golden_tests/TestFinBondZeroCurve.py
index b0907942..6851a255 100644
--- a/golden_tests/TestFinBondZeroCurve.py
+++ b/golden_tests/TestFinBondZeroCurve.py
@@ -2,19 +2,19 @@
 # Copyright (C) 2018, 2019, 2020 Dominic O'Kane
 ###############################################################################
 
+import os
 import sys
 sys.path.append("..")
 
+import datetime as dt
+
+
 from FinTestCases import FinTestCases, globalTestCaseMode
 from financepy.products.bonds.bond import Bond
-
 from financepy.products.bonds.bond_zero_curve import BondZeroCurve
-
 from financepy.utils.date import Date, from_datetime
 from financepy.utils.day_count import DayCountTypes
 from financepy.utils.frequency import FrequencyTypes
-import datetime as dt
-import os
 
 test_cases = FinTestCases(__file__, globalTestCaseMode)