diff --git a/tests/test_binance_mig.py b/tests/test_binance_mig.py
index 5a5bbe9dc..dc89a1ae7 100644
--- a/tests/test_binance_mig.py
+++ b/tests/test_binance_mig.py
@@ -21,10 +21,10 @@ def test_binance_mig_data_conversion(default_conf_usdt, tmpdir, testdatadir):
     futures_dst = tmpdir / 'futures'
     futures_dst.mkdir()
     files = [
-        '-1h-mark.json',
-        '-1h-futures.json',
-        '-8h-funding_rate.json',
-        '-8h-mark.json',
+        '-1h-mark.feather',
+        '-1h-futures.feather',
+        '-8h-funding_rate.feather',
+        '-8h-mark.feather',
     ]
 
     # Copy files to tmpdir and rename to old naming
diff --git a/tests/testdata/ADA_BTC-5m.feather b/tests/testdata/ADA_BTC-5m.feather
new file mode 100644
index 000000000..c4f6d00bf
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diff --git a/tests/testdata/DASH_BTC-5m.feather b/tests/testdata/DASH_BTC-5m.feather
new file mode 100644
index 000000000..efe0f7c03
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diff --git a/tests/testdata/ETC_BTC-5m.feather b/tests/testdata/ETC_BTC-5m.feather
new file mode 100644
index 000000000..3de07f86f
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diff --git a/tests/testdata/ETH_BTC-5m.feather b/tests/testdata/ETH_BTC-5m.feather
new file mode 100644
index 000000000..4be1d0b21
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diff --git a/tests/testdata/LTC_BTC-5m.feather b/tests/testdata/LTC_BTC-5m.feather
new file mode 100644
index 000000000..c321e5639
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diff --git a/tests/testdata/NOPAIR_XXX-4m.feather b/tests/testdata/NOPAIR_XXX-4m.feather
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/testdata/NXT_BTC-5m.feather b/tests/testdata/NXT_BTC-5m.feather
new file mode 100644
index 000000000..b8fe5fbdb
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diff --git a/tests/testdata/TRX_BTC-5m.feather b/tests/testdata/TRX_BTC-5m.feather
new file mode 100644
index 000000000..69c6c1a75
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diff --git a/tests/testdata/UNITTEST_BTC-1m.feather b/tests/testdata/UNITTEST_BTC-1m.feather
new file mode 100644
index 000000000..342db829f
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diff --git a/tests/testdata/UNITTEST_BTC-30m.feather b/tests/testdata/UNITTEST_BTC-30m.feather
new file mode 100644
index 000000000..c5e18e9b8
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diff --git a/tests/testdata/UNITTEST_BTC-5m.feather b/tests/testdata/UNITTEST_BTC-5m.feather
new file mode 100644
index 000000000..4be1d0b21
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diff --git a/tests/testdata/UNITTEST_BTC-8m.feather b/tests/testdata/UNITTEST_BTC-8m.feather
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/testdata/XLM_BTC-5m.feather b/tests/testdata/XLM_BTC-5m.feather
new file mode 100644
index 000000000..2802b5345
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diff --git a/tests/testdata/XMR_BTC-5m.feather b/tests/testdata/XMR_BTC-5m.feather
new file mode 100644
index 000000000..4fd678b7a
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diff --git a/tests/testdata/XRP_ETH-1m.feather b/tests/testdata/XRP_ETH-1m.feather
new file mode 100644
index 000000000..17cbde3bc
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diff --git a/tests/testdata/XRP_ETH-5m.feather b/tests/testdata/XRP_ETH-5m.feather
new file mode 100644
index 000000000..611f382fe
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diff --git a/tests/testdata/ZEC_BTC-5m.feather b/tests/testdata/ZEC_BTC-5m.feather
new file mode 100644
index 000000000..d40a4bb36
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diff --git a/tests/testdata/futures/UNITTEST_USDT_USDT-1h-mark.feather b/tests/testdata/futures/UNITTEST_USDT_USDT-1h-mark.feather
new file mode 100644
index 000000000..4ddc31d1f
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diff --git a/tests/testdata/futures/XRP_USDT_USDT-1h-futures.feather b/tests/testdata/futures/XRP_USDT_USDT-1h-futures.feather
new file mode 100644
index 000000000..ad05f5be0
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diff --git a/tests/testdata/futures/XRP_USDT_USDT-1h-mark.feather b/tests/testdata/futures/XRP_USDT_USDT-1h-mark.feather
new file mode 100644
index 000000000..9040cb78e
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diff --git a/tests/testdata/futures/XRP_USDT_USDT-5m-futures.feather b/tests/testdata/futures/XRP_USDT_USDT-5m-futures.feather
new file mode 100644
index 000000000..bea3b57a3
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diff --git a/tests/testdata/futures/XRP_USDT_USDT-8h-funding_rate.feather b/tests/testdata/futures/XRP_USDT_USDT-8h-funding_rate.feather
new file mode 100644
index 000000000..3641c024e
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diff --git a/tests/testdata/futures/XRP_USDT_USDT-8h-mark.feather b/tests/testdata/futures/XRP_USDT_USDT-8h-mark.feather
new file mode 100644
index 000000000..f41502690
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