diff --git a/capture/capture_test.go b/capture/capture_test.go
new file mode 100644
index 0000000..9f3772d
--- /dev/null
+++ b/capture/capture_test.go
@@ -0,0 +1,22 @@
+package capture
+
+import (
+	"testing"
+)
+
+func TestSetInterfaces(t *testing.T) {
+	listener := &Listener{
+		loopIndex: 99999,
+	}
+	listener.setInterfaces()
+
+	for _, nic := range listener.Interfaces {
+		if (len(nic.Addresses)) == 0 {
+			t.Errorf("nic %s was captured with 0 addresses", nic.Name)
+		}
+	}
+
+	if listener.loopIndex == 99999 {
+		t.Errorf("loopback nic index was not found")
+	}
+}