move unit tests into 'testing' directories
diff --git a/openstack/blockstorage/v1/snapshots/testing/fixtures.go b/openstack/blockstorage/v1/snapshots/testing/fixtures.go
new file mode 100644
index 0000000..7bdc782
--- /dev/null
+++ b/openstack/blockstorage/v1/snapshots/testing/fixtures.go
@@ -0,0 +1,114 @@
+package testing
+
+import (
+	"fmt"
+	"net/http"
+	"testing"
+
+	th "github.com/gophercloud/gophercloud/testhelper"
+	fake "github.com/gophercloud/gophercloud/testhelper/client"
+)
+
+func MockListResponse(t *testing.T) {
+	th.Mux.HandleFunc("/snapshots", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "GET")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+
+		w.Header().Add("Content-Type", "application/json")
+		w.WriteHeader(http.StatusOK)
+
+		fmt.Fprintf(w, `
+    {
+      "snapshots": [
+        {
+          "id": "289da7f8-6440-407c-9fb4-7db01ec49164",
+          "display_name": "snapshot-001"
+        },
+        {
+          "id": "96c3bda7-c82a-4f50-be73-ca7621794835",
+          "display_name": "snapshot-002"
+        }
+      ]
+    }
+    `)
+	})
+}
+
+func MockGetResponse(t *testing.T) {
+	th.Mux.HandleFunc("/snapshots/d32019d3-bc6e-4319-9c1d-6722fc136a22", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "GET")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+
+		w.Header().Add("Content-Type", "application/json")
+		w.WriteHeader(http.StatusOK)
+		fmt.Fprintf(w, `
+{
+    "snapshot": {
+        "display_name": "snapshot-001",
+        "id": "d32019d3-bc6e-4319-9c1d-6722fc136a22"
+    }
+}
+      `)
+	})
+}
+
+func MockCreateResponse(t *testing.T) {
+	th.Mux.HandleFunc("/snapshots", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "POST")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+		th.TestHeader(t, r, "Content-Type", "application/json")
+		th.TestHeader(t, r, "Accept", "application/json")
+		th.TestJSONRequest(t, r, `
+{
+    "snapshot": {
+        "volume_id": "1234",
+        "display_name": "snapshot-001"
+    }
+}
+      `)
+
+		w.Header().Add("Content-Type", "application/json")
+		w.WriteHeader(http.StatusCreated)
+
+		fmt.Fprintf(w, `
+{
+    "snapshot": {
+        "volume_id": "1234",
+        "display_name": "snapshot-001",
+        "id": "d32019d3-bc6e-4319-9c1d-6722fc136a22"
+    }
+}
+    `)
+	})
+}
+
+func MockUpdateMetadataResponse(t *testing.T) {
+	th.Mux.HandleFunc("/snapshots/123/metadata", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "PUT")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+		th.TestHeader(t, r, "Content-Type", "application/json")
+		th.TestJSONRequest(t, r, `
+    {
+      "metadata": {
+        "key": "v1"
+      }
+    }
+    `)
+
+		fmt.Fprintf(w, `
+      {
+        "metadata": {
+          "key": "v1"
+        }
+      }
+    `)
+	})
+}
+
+func MockDeleteResponse(t *testing.T) {
+	th.Mux.HandleFunc("/snapshots/d32019d3-bc6e-4319-9c1d-6722fc136a22", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "DELETE")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+		w.WriteHeader(http.StatusNoContent)
+	})
+}