Merge pull request #435 from onflow/fxamacker/add-SlabID.Address-func

Add SlabID.Address()

Author: fxamacker

storage.go

@@ -136,6 +136,11 @@ func (id SlabID) AddressAsUint64() uint64 {
 	return binary.BigEndian.Uint64(id.address[:])
 }
 
+// Address returns the address of SlabID.
+func (id SlabID) Address() Address {
+	return id.address
+}
+
 func (id SlabID) IndexAsUint64() uint64 {
 	return binary.BigEndian.Uint64(id.index[:])
 }

storage_test.go

@@ -170,6 +170,17 @@ func TestSlabIDAddressAsUint64(t *testing.T) {
 	})
 }
 
+func TestSlabIDAddress(t *testing.T) {
+	t.Run("temp", func(t *testing.T) {
+		id := NewSlabID(Address{}, SlabIndex{1})
+		require.Equal(t, Address{}, id.Address())
+	})
+	t.Run("perm", func(t *testing.T) {
+		id := NewSlabID(Address{0, 0, 0, 0, 0, 0, 0, 1}, SlabIndex{1})
+		require.Equal(t, Address{0, 0, 0, 0, 0, 0, 0, 1}, id.Address())
+	})
+}
+
 func TestSlabIDIndexAsUint64(t *testing.T) {
 	t.Run("temp", func(t *testing.T) {
 		id := NewSlabID(Address{}, SlabIndex{})