Acceptance test for tenants2.List.
diff --git a/acceptance/openstack/identity/v2/identity_test.go b/acceptance/openstack/identity/v2/identity_test.go
new file mode 100644
index 0000000..2ecd3ca
--- /dev/null
+++ b/acceptance/openstack/identity/v2/identity_test.go
@@ -0,0 +1,48 @@
+// +build acceptance
+
+package v2
+
+import (
+	"testing"
+
+	"github.com/rackspace/gophercloud"
+	"github.com/rackspace/gophercloud/openstack"
+	"github.com/rackspace/gophercloud/openstack/utils"
+	th "github.com/rackspace/gophercloud/testhelper"
+)
+
+func v2AuthOptions(t *testing.T) gophercloud.AuthOptions {
+	// Obtain credentials from the environment.
+	ao, err := utils.AuthOptions()
+	th.AssertNoErr(t, err)
+
+	// Trim out unused fields. Prefer authentication by API key to password.
+	ao.UserID, ao.DomainID, ao.DomainName = "", "", ""
+	if ao.APIKey != "" {
+		ao.Password = ""
+	}
+
+	return ao
+}
+
+func createClient(t *testing.T, auth bool) *gophercloud.ServiceClient {
+	ao := v2AuthOptions(t)
+
+	provider, err := openstack.NewClient(ao.IdentityEndpoint)
+	th.AssertNoErr(t, err)
+
+	if auth {
+		err = openstack.AuthenticateV2(provider, ao)
+		th.AssertNoErr(t, err)
+	}
+
+	return openstack.NewIdentityV2(provider)
+}
+
+func unauthenticatedClient(t *testing.T) *gophercloud.ServiceClient {
+	return createClient(t, false)
+}
+
+func authenticatedClient(t *testing.T) *gophercloud.ServiceClient {
+	return createClient(t, true)
+}