diff --git a/.prettierignore b/.prettierignore
index 9b1c8b133..1188a3b2b 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -1 +1,2 @@
 /dist
+/test/import
diff --git a/test/import/invalid-date.json b/test/import/invalid-date.json
new file mode 100644
index 000000000..2ddaf372e
--- /dev/null
+++ b/test/import/invalid-date.json
@@ -0,0 +1,18 @@
+{
+  "meta": {
+    "date": "2021-01-01T00:00:00.000Z",
+    "version": "dev"
+  },
+  "orders": [
+    {
+      "currency": "USD",
+      "dataSource": "YAHOO",
+      "date": "<invalid>",
+      "fee": 0,
+      "quantity": 20,
+      "symbol": "AAPL",
+      "type": "BUY",
+      "unitPrice": 100.0
+    }
+  ]
+}
diff --git a/test/import/invalid-fee.csv b/test/import/invalid-fee.csv
new file mode 100644
index 000000000..f0df9d581
--- /dev/null
+++ b/test/import/invalid-fee.csv
@@ -0,0 +1,2 @@
+Date,Code,CCY,Price,Qty,Action,Amount,Fee
+16/09/2021,MSFT,USD,298.580,5,buy,1496.09,<invalid>
diff --git a/test/import/invalid-symbol.json b/test/import/invalid-symbol.json
new file mode 100644
index 000000000..c03f86e5d
--- /dev/null
+++ b/test/import/invalid-symbol.json
@@ -0,0 +1,18 @@
+{
+  "meta": {
+    "date": "2021-01-01T00:00:00.000Z",
+    "version": "dev"
+  },
+  "orders": [
+    {
+      "currency": "USD",
+      "dataSource": "YAHOO",
+      "date": "2021-01-01T00:00:00.000Z",
+      "fee": 0,
+      "quantity": 20,
+      "symbol": "<invalid>",
+      "type": "BUY",
+      "unitPrice": 100.0
+    }
+  ]
+}
diff --git a/test/import/unexpected-format.json b/test/import/unexpected-format.json
new file mode 100644
index 000000000..5468597e2
--- /dev/null
+++ b/test/import/unexpected-format.json
@@ -0,0 +1 @@
+<invalid>