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fix: GetBlockWithTxs error when querying block with 0 tx (backport #12108) #12123

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Jun 2, 2022
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1 change: 1 addition & 0 deletions CHANGELOG.md
Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
* (migrations) [#12028](https://github.com/cosmos/cosmos-sdk/pull/12028) Fix v0.45->v0.46 in-place store migrations.
* (baseapp) [#12089](https://github.com/cosmos/cosmos-sdk/pull/12089) Include antehandler and runMsgs events in SimulateTx.
* (cli) [#12095](https://github.com/cosmos/cosmos-sdk/pull/12095) Fix running a tx with --dry-run returns an error
* (x/auth) [#12108](https://github.com/cosmos/cosmos-sdk/pull/12108) Fix GetBlockWithTxs error when querying block with 0 tx

## [v0.46.0-rc1](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.46.0-rc1) - 2022-05-23

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2 changes: 1 addition & 1 deletion x/auth/tx/service.go
Original file line number Diff line number Diff line change
Expand Up @@ -198,7 +198,7 @@ func (s txServer) GetBlockWithTxs(ctx context.Context, req *txtypes.GetBlockWith
blockTxs := block.Data.Txs
blockTxsLn := uint64(len(blockTxs))
txs := make([]*txtypes.Tx, 0, limit)
if offset >= blockTxsLn {
if offset >= blockTxsLn && blockTxsLn != 0 {
return nil, sdkerrors.ErrInvalidRequest.Wrapf("out of range: cannot paginate %d txs with offset %d and limit %d", blockTxsLn, offset, limit)
}
decodeTxAt := func(i uint64) error {
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20 changes: 12 additions & 8 deletions x/auth/tx/service_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -615,14 +615,16 @@ func (s IntegrationTestSuite) TestGetBlockWithTxs_GRPC() {
req *tx.GetBlockWithTxsRequest
expErr bool
expErrMsg string
expTxsLen int
}{
{"nil request", nil, true, "request cannot be nil"},
{"empty request", &tx.GetBlockWithTxsRequest{}, true, "height must not be less than 1 or greater than the current height"},
{"bad height", &tx.GetBlockWithTxsRequest{Height: 99999999}, true, "height must not be less than 1 or greater than the current height"},
{"bad pagination", &tx.GetBlockWithTxsRequest{Height: s.txHeight, Pagination: &query.PageRequest{Offset: 1000, Limit: 100}}, true, "out of range"},
{"good request", &tx.GetBlockWithTxsRequest{Height: s.txHeight}, false, ""},
{"with pagination request", &tx.GetBlockWithTxsRequest{Height: s.txHeight, Pagination: &query.PageRequest{Offset: 0, Limit: 1}}, false, ""},
{"page all request", &tx.GetBlockWithTxsRequest{Height: s.txHeight, Pagination: &query.PageRequest{Offset: 0, Limit: 100}}, false, ""},
{"nil request", nil, true, "request cannot be nil", 0},
{"empty request", &tx.GetBlockWithTxsRequest{}, true, "height must not be less than 1 or greater than the current height", 0},
{"bad height", &tx.GetBlockWithTxsRequest{Height: 99999999}, true, "height must not be less than 1 or greater than the current height", 0},
{"bad pagination", &tx.GetBlockWithTxsRequest{Height: s.txHeight, Pagination: &query.PageRequest{Offset: 1000, Limit: 100}}, true, "out of range", 0},
{"good request", &tx.GetBlockWithTxsRequest{Height: s.txHeight}, false, "", 1},
{"with pagination request", &tx.GetBlockWithTxsRequest{Height: s.txHeight, Pagination: &query.PageRequest{Offset: 0, Limit: 1}}, false, "", 1},
{"page all request", &tx.GetBlockWithTxsRequest{Height: s.txHeight, Pagination: &query.PageRequest{Offset: 0, Limit: 100}}, false, "", 1},
{"block with 0 tx", &tx.GetBlockWithTxsRequest{Height: s.txHeight - 1, Pagination: &query.PageRequest{Offset: 0, Limit: 100}}, false, "", 0},
}
for _, tc := range testCases {
s.Run(tc.name, func() {
Expand All @@ -633,7 +635,9 @@ func (s IntegrationTestSuite) TestGetBlockWithTxs_GRPC() {
s.Require().Contains(err.Error(), tc.expErrMsg)
} else {
s.Require().NoError(err)
s.Require().Equal("foobar", grpcRes.Txs[0].Body.Memo)
if tc.expTxsLen > 0 {
s.Require().Equal("foobar", grpcRes.Txs[0].Body.Memo)
}
s.Require().Equal(grpcRes.Block.Header.Height, tc.req.Height)
if tc.req.Pagination != nil {
s.Require().LessOrEqual(len(grpcRes.Txs), int(tc.req.Pagination.Limit))
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