move unit tests into 'testing' directories
diff --git a/openstack/compute/v2/extensions/startstop/testing/fixtures.go b/openstack/compute/v2/extensions/startstop/testing/fixtures.go
new file mode 100644
index 0000000..1086b0e
--- /dev/null
+++ b/openstack/compute/v2/extensions/startstop/testing/fixtures.go
@@ -0,0 +1,27 @@
+package testing
+
+import (
+	"net/http"
+	"testing"
+
+	th "github.com/gophercloud/gophercloud/testhelper"
+	"github.com/gophercloud/gophercloud/testhelper/client"
+)
+
+func mockStartServerResponse(t *testing.T, id string) {
+	th.Mux.HandleFunc("/servers/"+id+"/action", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "POST")
+		th.TestHeader(t, r, "X-Auth-Token", client.TokenID)
+		th.TestJSONRequest(t, r, `{"os-start": null}`)
+		w.WriteHeader(http.StatusAccepted)
+	})
+}
+
+func mockStopServerResponse(t *testing.T, id string) {
+	th.Mux.HandleFunc("/servers/"+id+"/action", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "POST")
+		th.TestHeader(t, r, "X-Auth-Token", client.TokenID)
+		th.TestJSONRequest(t, r, `{"os-stop": null}`)
+		w.WriteHeader(http.StatusAccepted)
+	})
+}