added one more function to retrive source volumes

inttests/snapshot_policy_test.go

@@ -65,6 +65,10 @@ func TestCreateModifyDeleteSnapshotPolicy(t *testing.T) {
 	err = system.AssignVolumeToSnapshotPolicy(assignVolume, snapID)
 	assert.Nil(t, err)
 
+	vol, err2 := system.GetSourceVolume(snapID)
+	assert.Nil(t, err2)
+	assert.NotNil(t, vol)
+
 	assignVolume = &types.AssignVolumeToSnapshotPolicyParam{
 		SourceVolumeId: "Invalid",
 	}

snapshot_policy.go

@@ -116,3 +116,15 @@ func (system *System) ResumeSnapshotPolicy(id string) error {
 	}
 	return nil
 }
+
+// GetSourceVolume returns a list of volumes assigned to snapshot policy
+func (system *System) GetSourceVolume(id string) ([]*types.Volume, error) {
+	var volumes []*types.Volume
+	path := fmt.Sprintf("/api/instances/SnapshotPolicy::%v/relationships/SourceVolume", id)
+	err := system.client.getJSONWithRetry(
+		http.MethodGet, path, nil, &volumes)
+	if err != nil {
+		return nil, err
+	}
+	return volumes, nil
+}

snapshot_policy_test.go

@@ -446,3 +446,48 @@ func TestDeleteSnapshotPolicy(t *testing.T) {
 		})
 	}
 }
+
+func TestGetSourceVolume(t *testing.T) {
+	type testCase struct {
+		id       string
+		expected error
+	}
+	cases := []testCase{
+		{
+			id:       ID2,
+			expected: nil,
+		},
+		{
+			id:       "Invalid",
+			expected: errors.New("id (Invalid) must be a hexadecimal number (unsigned long)."),
+		},
+	}
+	svr := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	}))
+	defer svr.Close()
+
+	for _, tc := range cases {
+		tc := tc
+		t.Run("", func(ts *testing.T) {
+			client, err := NewClientWithArgs(svr.URL, "", math.MaxInt64, true, false)
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			s := System{
+				client: client,
+			}
+
+			_, err2 := s.GetSourceVolume(tc.id)
+			if err2 != nil {
+				if tc.expected == nil {
+					t.Errorf("Assigning volume to snapshot policy did not work as expected, \n\tgot: %s \n\twant: %v", err2, tc.expected)
+				} else {
+					if err2.Error() != tc.expected.Error() {
+						t.Errorf("Assigning volume to snapshot policy did not work as expected, \n\tgot: %s \n\twant: %s", err2, tc.expected)
+					}
+				}
+			}
+		})
+	}
+}

template_test.go

@@ -118,7 +118,6 @@ func TestGetTemplateByIDNegative(t *testing.T) {
 	assert.NotNil(t, err)
 }
 
-
 func TestGetTemplateByFiltersNegative(t *testing.T) {
 	svr := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusInternalServerError)