Refactor tokens to use build tag fixtures.
diff --git a/openstack/identity/v2/tokens/fixtures.go b/openstack/identity/v2/tokens/fixtures.go
new file mode 100644
index 0000000..1cb0d05
--- /dev/null
+++ b/openstack/identity/v2/tokens/fixtures.go
@@ -0,0 +1,128 @@
+// +build fixtures
+
+package tokens
+
+import (
+	"fmt"
+	"net/http"
+	"testing"
+	"time"
+
+	"github.com/rackspace/gophercloud/openstack/identity/v2/tenants"
+	th "github.com/rackspace/gophercloud/testhelper"
+)
+
+// ExpectedToken is the token that should be parsed from TokenCreationResponse.
+var ExpectedToken = &Token{
+	ID:        "aaaabbbbccccdddd",
+	ExpiresAt: time.Date(2014, time.January, 31, 15, 30, 58, 0, time.UTC),
+	Tenant: tenants.Tenant{
+		ID:          "fc394f2ab2df4114bde39905f800dc57",
+		Name:        "test",
+		Description: "There are many tenants. This one is yours.",
+		Enabled:     true,
+	},
+}
+
+// ExpectedServiceCatalog is the service catalog that should be parsed from TokenCreationResponse.
+var ExpectedServiceCatalog = &ServiceCatalog{
+	Entries: []CatalogEntry{
+		CatalogEntry{
+			Name: "inscrutablewalrus",
+			Type: "something",
+			Endpoints: []Endpoint{
+				Endpoint{
+					PublicURL: "http://something0:1234/v2/",
+					Region:    "region0",
+				},
+				Endpoint{
+					PublicURL: "http://something1:1234/v2/",
+					Region:    "region1",
+				},
+			},
+		},
+		CatalogEntry{
+			Name: "arbitrarypenguin",
+			Type: "else",
+			Endpoints: []Endpoint{
+				Endpoint{
+					PublicURL: "http://else0:4321/v3/",
+					Region:    "region0",
+				},
+			},
+		},
+	},
+}
+
+// TokenCreationResponse is a JSON response that contains ExpectedToken and ExpectedServiceCatalog.
+const TokenCreationResponse = `
+{
+	"access": {
+		"token": {
+			"issued_at": "2014-01-30T15:30:58.000000Z",
+			"expires": "2014-01-31T15:30:58Z",
+			"id": "aaaabbbbccccdddd",
+			"tenant": {
+				"description": "There are many tenants. This one is yours.",
+				"enabled": true,
+				"id": "fc394f2ab2df4114bde39905f800dc57",
+				"name": "test"
+			}
+		},
+		"serviceCatalog": [
+			{
+				"endpoints": [
+					{
+						"publicURL": "http://something0:1234/v2/",
+						"region": "region0"
+					},
+					{
+						"publicURL": "http://something1:1234/v2/",
+						"region": "region1"
+					}
+				],
+				"type": "something",
+				"name": "inscrutablewalrus"
+			},
+			{
+				"endpoints": [
+					{
+						"publicURL": "http://else0:4321/v3/",
+						"region": "region0"
+					}
+				],
+				"type": "else",
+				"name": "arbitrarypenguin"
+			}
+		]
+	}
+}
+`
+
+// HandleTokenPost expects a POST against a /tokens handler, ensures that the request body has been
+// constructed properly given certain auth options, and returns the result.
+func HandleTokenPost(t *testing.T, requestJSON string) {
+	th.Mux.HandleFunc("/tokens", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "POST")
+		th.TestHeader(t, r, "Content-Type", "application/json")
+		th.TestHeader(t, r, "Accept", "application/json")
+		if requestJSON != "" {
+			th.TestJSONRequest(t, r, requestJSON)
+		}
+
+		w.WriteHeader(http.StatusOK)
+		fmt.Fprintf(w, TokenCreationResponse)
+	})
+}
+
+// IsSuccessful ensures that a CreateResult was successful and contains the correct token and
+// service catalog.
+func IsSuccessful(t *testing.T, result CreateResult) {
+	token, err := result.ExtractToken()
+	th.AssertNoErr(t, err)
+	th.CheckDeepEquals(t, ExpectedToken, token)
+
+	serviceCatalog, err := result.ExtractServiceCatalog()
+	th.AssertNoErr(t, err)
+	th.CheckDeepEquals(t, ExpectedServiceCatalog, serviceCatalog)
+}