eth: Update zz_deepcopy_generated.go (#79)

* eth: Update zz_deepcopy_generated.go
* Add a testcase to detect eth.Block.DeepCopy mismatch

eth/Makefile

@@ -4,9 +4,9 @@ SRC_FILES = $(filter-out zz_deepcopy_generated.go, $(wildcard *.go))
 # corresponding *.go changed.
 #
 # To install deepcopy-gen simply run:
-# GO111MODULE=off go install k8s.io/gengo/examples/deepcopy-gen
+# GO111MODULE=off go install k8s.io/code-generator/cmd/deepcopy-gen@latest
 zz_deepcopy_generated.go: ${SRC_FILES}
 	pushd .. && \
-		deepcopy-gen -o . -O zz_deepcopy_generated -i ./eth --go-header-file /dev/null ; \
+		deepcopy-gen -O zz_deepcopy_generated -i ./eth --go-header-file /dev/null --trim-path-prefix "github.com/INFURA/go-ethlibs" ; \
 	popd
 

eth/block_test.go

@@ -602,4 +602,22 @@ func TestBlock_ZhejiangBlockMarshalling(t *testing.T) {
 	require.Equal(t, "0xbd0f", block.Withdrawals[15].ValidatorIndex.String())
 	require.Equal(t, "0xf97e180c050e5Ab072211Ad2C213Eb5AEE4DF134", block.Withdrawals[15].Address.String())
 	require.Equal(t, "0x2546b", block.Withdrawals[15].Amount.String())
+
+	t.Run("DeepCopying", func(t *testing.T) {
+		other := block.DeepCopy()
+		original, err := json.Marshal(&block)
+		require.NoError(t, err)
+
+		copied, err := json.Marshal(&other)
+		require.NoError(t, err)
+
+		require.Len(t, other.Withdrawals, 16)
+
+		require.JSONEq(t, string(original), string(copied))
+
+		// ensure that block.Withdrawal and other.Withdrawal actually point to two different slices
+		// mutate other and make sure block isn't changed to ensure not aliases of same slice
+		other.Withdrawals[0].Index = eth.QuantityFromInt64(0xdeadbeef)
+		require.NotEqual(t, block.Withdrawals[0].Index.Int64(), other.Withdrawals[0].Index.Int64())
+	})
 }