Rackspace Auto Scale: Add policies List()
diff --git a/rackspace/autoscale/v1/policies/fixtures.go b/rackspace/autoscale/v1/policies/fixtures.go
new file mode 100644
index 0000000..bd4a609
--- /dev/null
+++ b/rackspace/autoscale/v1/policies/fixtures.go
@@ -0,0 +1,113 @@
+// +build fixtures
+
+package policies
+
+import (
+	"fmt"
+	"net/http"
+	"testing"
+
+	th "github.com/rackspace/gophercloud/testhelper"
+	"github.com/rackspace/gophercloud/testhelper/client"
+)
+
+// PolicyListBody contains the canned body of a policies.List response.
+const PolicyListBody = `
+{
+  "policies_links": [],
+  "policies": [
+    {
+      "name": "webhook policy",
+      "links": [
+        {
+          "href": "https://dfw.autoscale.api.rackspacecloud.com/v1.0/123456/groups/60b15dad-5ea1-43fa-9a12-a1d737b4da07/policies/2b48d247-0282-4b9d-8775-5c4b67e8e649/",
+          "rel": "self"
+        }
+      ],
+      "changePercent": 3,
+      "cooldown": 300,
+      "type": "webhook",
+      "id": "2b48d247-0282-4b9d-8775-5c4b67e8e649"
+    },
+    {
+      "cooldown": 0,
+      "name": "one time",
+      "links": [
+        {
+          "href": "https://dfw.autoscale.api.rackspacecloud.com/v1.0/123456/groups/60b15dad-5ea1-43fa-9a12-a1d737b4da07/policies/c175c31e-65f9-41de-8b15-918420d3253e/",
+          "rel": "self"
+        }
+      ],
+      "args": {
+        "at": "2020-04-01T23:00:00.000Z"
+      },
+      "type": "schedule",
+      "id": "c175c31e-65f9-41de-8b15-918420d3253e",
+      "change": -1
+    },
+    {
+      "cooldown": 0,
+      "name": "sunday afternoon",
+      "links": [
+        {
+          "href": "https://dfw.autoscale.api.rackspacecloud.com/v1.0/123456/groups/60b15dad-5ea1-43fa-9a12-a1d737b4da07/policies/e785e3e7-af9e-4f3c-99ae-b80a532e1663/",
+          "rel": "self"
+        }
+      ],
+      "args": {
+        "cron": "59 15 * * 0"
+      },
+      "type": "schedule",
+      "id": "e785e3e7-af9e-4f3c-99ae-b80a532e1663",
+      "change": 2
+    }
+  ]
+}
+`
+
+var (
+	// WebhookPolicy is a Policy corresponding to the first result in PolicyListBody.
+	WebhookPolicy = Policy{
+		ID:            "2b48d247-0282-4b9d-8775-5c4b67e8e649",
+		Name:          "webhook policy",
+		Type:          Webhook,
+		Cooldown:      300,
+		ChangePercent: 3,
+	}
+
+	// OneTimePolicy is a Policy corresponding to the second result in PolicyListBody.
+	OneTimePolicy = Policy{
+		ID:     "c175c31e-65f9-41de-8b15-918420d3253e",
+		Name:   "one time",
+		Type:   Schedule,
+		Change: -1,
+		Args: map[string]interface{}{
+			"at": "2020-04-01T23:00:00.000Z",
+		},
+	}
+
+	// SundayAfternoonPolicy is a Policy corresponding to the third result in PolicyListBody.
+	SundayAfternoonPolicy = Policy{
+		ID:     "e785e3e7-af9e-4f3c-99ae-b80a532e1663",
+		Name:   "sunday afternoon",
+		Type:   Schedule,
+		Change: 2,
+		Args: map[string]interface{}{
+			"cron": "59 15 * * 0",
+		},
+	}
+)
+
+// HandlePolicyListSuccessfully sets up the test server to respond to a policies List request.
+func HandlePolicyListSuccessfully(t *testing.T) {
+	path := "/groups/10eb3219-1b12-4b34-b1e4-e10ee4f24c65/policies"
+
+	th.Mux.HandleFunc(path, func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "GET")
+		th.TestHeader(t, r, "X-Auth-Token", client.TokenID)
+
+		w.Header().Add("Content-Type", "application/json")
+
+		fmt.Fprintf(w, PolicyListBody)
+	})
+}