1 files changed, 106 insertions, 0 deletions
diff --git a/swarm/shed/field_uint64_test.go b/swarm/shed/field_uint64_test.go
index 69ade71ba..9462b56dd 100644
--- a/swarm/shed/field_uint64_test.go
+++ b/swarm/shed/field_uint64_test.go
@@ -192,3 +192,109 @@ func TestUint64Field_IncInBatch(t *testing.T) {
 		t.Errorf("got uint64 %v, want %v", got, want)
 	}
 }
+
+// TestUint64Field_Dec validates Dec operation
+// of the Uint64Field.
+func TestUint64Field_Dec(t *testing.T) {
+	db, cleanupFunc := newTestDB(t)
+	defer cleanupFunc()
+
+	counter, err := db.NewUint64Field("counter")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// test overflow protection
+	var want uint64
+	got, err := counter.Dec()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got != want {
+		t.Errorf("got uint64 %v, want %v", got, want)
+	}
+
+	want = 32
+	err = counter.Put(want)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	want = 31
+	got, err = counter.Dec()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got != want {
+		t.Errorf("got uint64 %v, want %v", got, want)
+	}
+}
+
+// TestUint64Field_DecInBatch validates DecInBatch operation
+// of the Uint64Field.
+func TestUint64Field_DecInBatch(t *testing.T) {
+	db, cleanupFunc := newTestDB(t)
+	defer cleanupFunc()
+
+	counter, err := db.NewUint64Field("counter")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	batch := new(leveldb.Batch)
+	var want uint64
+	got, err := counter.DecInBatch(batch)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got != want {
+		t.Errorf("got uint64 %v, want %v", got, want)
+	}
+	err = db.WriteBatch(batch)
+	if err != nil {
+		t.Fatal(err)
+	}
+	got, err = counter.Get()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got != want {
+		t.Errorf("got uint64 %v, want %v", got, want)
+	}
+
+	batch2 := new(leveldb.Batch)
+	want = 42
+	counter.PutInBatch(batch2, want)
+	err = db.WriteBatch(batch2)
+	if err != nil {
+		t.Fatal(err)
+	}
+	got, err = counter.Get()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got != want {
+		t.Errorf("got uint64 %v, want %v", got, want)
+	}
+
+	batch3 := new(leveldb.Batch)
+	want = 41
+	got, err = counter.DecInBatch(batch3)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got != want {
+		t.Errorf("got uint64 %v, want %v", got, want)
+	}
+	err = db.WriteBatch(batch3)
+	if err != nil {
+		t.Fatal(err)
+	}
+	got, err = counter.Get()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got != want {
+		t.Errorf("got uint64 %v, want %v", got, want)
+	}
+}