diff --git a/src/vtc/null_params_exclusion.vtc b/src/vtc/null_params_exclusion.vtc
index f2ed001..d04a0ce 100644
--- a/src/vtc/null_params_exclusion.vtc
+++ b/src/vtc/null_params_exclusion.vtc
@@ -1,4 +1,4 @@
-varnishtest "Test querymodifier vmod for partial non-matches"
+varnishtest "Test querymodifier vmod for null params exclusion"
 
 server s1 {
 	rxreq
diff --git a/src/vtc/null_params_exclusion_function.vtc b/src/vtc/null_params_exclusion_function.vtc
new file mode 100644
index 0000000..bfe6f43
--- /dev/null
+++ b/src/vtc/null_params_exclusion_function.vtc
@@ -0,0 +1,28 @@
+varnishtest "Test querymodifier vmod for null params using the excludeparams function"
+
+server s1 {
+	rxreq
+	txresp -body "OK1"
+	expect req.url == "/feed/"
+} -start
+
+varnish v1 -vcl+backend {
+	import std;
+	import querymodifier;
+
+	sub vcl_recv {
+		std.syslog(180, "querymodifier before: " + req.url);
+		set req.url = querymodifier.excludeparams(url=req.url, params="");
+		std.syslog(180, "querymodifier after: " + req.url);
+	}
+} -start
+
+client c1 {
+	txreq -url "/feed/?id=1&d=2&another=3"
+	rxresp
+	expect resp.status == 200
+} -run
+
+varnish v1 -expect n_object == 1
+varnish v1 -expect cache_miss == 1
+varnish v1 -expect cache_hit == 0
diff --git a/src/vtc/null_params_inclusion.vtc b/src/vtc/null_params_inclusion.vtc
index 0f6dc19..238a338 100644
--- a/src/vtc/null_params_inclusion.vtc
+++ b/src/vtc/null_params_inclusion.vtc
@@ -1,4 +1,4 @@
-varnishtest "Test querymodifier vmod for partial non-matches"
+varnishtest "Test querymodifier vmod for null params inclusion"
 
 server s1 {
 	rxreq
diff --git a/src/vtc/null_params_inclusion_function.vtc b/src/vtc/null_params_inclusion_function.vtc
new file mode 100644
index 0000000..37517b1
--- /dev/null
+++ b/src/vtc/null_params_inclusion_function.vtc
@@ -0,0 +1,32 @@
+varnishtest "Test querymodifier vmod for null params using the includeparams function"
+
+server s1 {
+	rxreq
+	txresp -body "OK1"
+	expect req.url == "/feed/"
+} -start
+
+varnish v1 -vcl+backend {
+	import std;
+	import querymodifier;
+
+	sub vcl_recv {
+		std.syslog(180, "querymodifier before: " + req.url);
+		set req.url = querymodifier.includeparams(url=req.url, params="");
+		std.syslog(180, "querymodifier after: " + req.url);
+	}
+} -start
+
+client c1 {
+	txreq -url "/feed/?id=1&d=2&another=3"
+	rxresp
+	expect resp.status == 200
+
+	txreq -url "/feed/"
+	rxresp
+	expect resp.status == 200
+} -run
+
+varnish v1 -expect n_object == 1
+varnish v1 -expect cache_miss == 1
+varnish v1 -expect cache_hit == 1