diff --git a/session_test.go b/session_test.go
new file mode 100644
index 0000000..b32934b
--- /dev/null
+++ b/session_test.go
@@ -0,0 +1,30 @@
+package main
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestGetSessionCookieMissingCookie(t *testing.T) {
+	r, _ := http.NewRequest("GET", "/", nil)
+	w := httptest.NewRecorder()
+	sessionKey, err := getSessionCookie(w, r)
+
+	if err != nil {
+		t.Fail()
+	}
+	if sessionKey == "" {
+		t.Errorf("Session key is empty")
+	}
+
+	cookies := w.Result().Cookies()
+	for _, c := range cookies {
+		if c.Name == "session" {
+			if c.Value != sessionKey {
+				t.Errorf("Wrong sessionKey %q != %q", c.Value, sessionKey)
+			}
+			break
+		}
+	}
+}