diff --git a/lib/tests/var/baddate b/lib/tests/var/baddate
new file mode 100644
index 00000000..2fda432e
--- /dev/null
+++ b/lib/tests/var/baddate
@@ -0,0 +1,5 @@
+# NP State file
+1
+54
+2147483647
+Date in future!!!!
diff --git a/lib/tests/var/missingdataline b/lib/tests/var/missingdataline
new file mode 100644
index 00000000..d87f73aa
--- /dev/null
+++ b/lib/tests/var/missingdataline
@@ -0,0 +1,4 @@
+# NP State file
+1
+54
+1234567890
diff --git a/lib/tests/var/oldformat b/lib/tests/var/oldformat
new file mode 100644
index 00000000..102f8c9f
--- /dev/null
+++ b/lib/tests/var/oldformat
@@ -0,0 +1,5 @@
+# NP State file
+0
+54
+1234567890
+String to read
diff --git a/lib/tests/var/statefile b/lib/tests/var/statefile
new file mode 100644
index 00000000..5002139c
--- /dev/null
+++ b/lib/tests/var/statefile
@@ -0,0 +1,5 @@
+# NP State file
+1
+54
+1234567890
+String to read