tests: Add unit tests for rpc client endpoints (#1409)

* test: add preliminary unit tests and additional mocks for chain_info, account_info and filters

* tests: added additional mocked client calls

* tests: bumped coverage of call_tx to 56% and chain_info to 77%

* tests: bumped call_tx coverage to 70.2% and added additional mock client calls

* tests: tx_info preliminary tests added for debugging.

* tests: added test coverage for sign_tx and additional mocks

* tests: tx_info test coverage bumped to 60.3%

* test: coverage for tracing_tests now at 72%

* tests: added fee makert query client mocks and bumped chain_info to 87.6% coverage.

* tests: failing Cosmos auth module account query.

* tests: added FeeMarket Params mock to call_tx_test

* cleanup some unused code

* tests: added helper function to test suite for signing a Tx and bumped coverage of tx_info to 71.2%

* test: commented GetAccount error case and bumped chain_info to 90.3% coverage

* test: cleanup of tests in node_info, sign_tx and account_info

* Clean up print

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* Apply suggestions from code review

* fix import issues

Co-authored-by: Vladislav Varadinov <vlad@evmos.org>
Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>
Co-authored-by: Freddy Caceres <facs95@gmail.com>

rpc/backend/backend.go

@@ -6,7 +6,6 @@ import (
 	"time"
 
 	"github.com/cosmos/cosmos-sdk/client"
-	"github.com/cosmos/cosmos-sdk/client/flags"
 	"github.com/cosmos/cosmos-sdk/crypto/keyring"
 	"github.com/cosmos/cosmos-sdk/server"
 	sdk "github.com/cosmos/cosmos-sdk/types"
@@ -16,12 +15,10 @@ import (
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rpc"
 	"github.com/ethereum/go-ethereum/signer/core/apitypes"
-	"github.com/evmos/ethermint/crypto/hd"
 	rpctypes "github.com/evmos/ethermint/rpc/types"
 	"github.com/evmos/ethermint/server/config"
 	ethermint "github.com/evmos/ethermint/types"
 	evmtypes "github.com/evmos/ethermint/x/evm/types"
-	"github.com/spf13/viper"
 	"github.com/tendermint/tendermint/libs/log"
 	tmrpctypes "github.com/tendermint/tendermint/rpc/core/types"
 )
@@ -162,23 +159,6 @@ func NewBackend(
 		panic(err)
 	}
 
-	algos, _ := clientCtx.Keyring.SupportedAlgorithms()
-	if !algos.Contains(hd.EthSecp256k1) {
-		kr, err := keyring.New(
-			sdk.KeyringServiceName(),
-			viper.GetString(flags.FlagKeyringBackend),
-			clientCtx.KeyringDir,
-			clientCtx.Input,
-			clientCtx.Codec,
-			hd.EthSecp256k1Option(),
-		)
-		if err != nil {
-			panic(err)
-		}
-
-		clientCtx = clientCtx.WithKeyring(kr)
-	}
-
 	return &Backend{
 		ctx:                 context.Background(),
 		clientCtx:           clientCtx,