Eckelj/reducing code smell (#325)

* aggregating error messages
* removed duplicate err msgs
* removed obsolete test (two times equal behaviour )
* added global error msg module
* refactored test utils to have sample types and sample objects by keepers separated
* excluded auto-generated code from sonarcube analysis


Signed-off-by: Jürgen Eckel <juergen@riddleandcode.com>

testutil/moduleobject/sampleobject.go

@@ -0,0 +1,98 @@
+package moduleobject
+
+import (
+	"encoding/hex"
+
+	"github.com/btcsuite/btcd/btcutil/hdkeychain"
+	"github.com/btcsuite/btcd/chaincfg"
+	"github.com/planetmint/planetmint-go/config"
+	"github.com/planetmint/planetmint-go/testutil/sample"
+	daotypes "github.com/planetmint/planetmint-go/x/dao/types"
+	machinetypes "github.com/planetmint/planetmint-go/x/machine/types"
+
+	"github.com/cosmos/cosmos-sdk/crypto/keyring"
+	"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
+	"github.com/cosmos/go-bip39"
+)
+
+func ExtendedKeyPair(cfg chaincfg.Params) (string, string) {
+	seed, err := bip39.NewSeedWithErrorChecking(sample.Mnemonic, keyring.DefaultBIP39Passphrase)
+	if err != nil {
+		panic(err)
+	}
+	xprivKey, err := hdkeychain.NewMaster(seed, &cfg)
+	if err != nil {
+		panic(err)
+	}
+	xpubKey, err := xprivKey.Neuter()
+	if err != nil {
+		panic(err)
+	}
+	return xprivKey.String(), xpubKey.String()
+}
+
+// Machine creates a new machine object
+// TODO: make address deterministic for test cases
+func Machine(name, pubKey string, prvKey string, address string) machinetypes.Machine {
+	metadata := Metadata()
+	_, liquidPubKey := ExtendedKeyPair(config.LiquidNetParams)
+	_, planetmintPubKey := ExtendedKeyPair(config.PlmntNetParams)
+
+	prvKeyBytes, _ := hex.DecodeString(prvKey)
+	sk := &secp256k1.PrivKey{Key: prvKeyBytes}
+	pubKeyBytes, _ := hex.DecodeString(pubKey)
+	sign, _ := sk.Sign(pubKeyBytes)
+	signatureHex := hex.EncodeToString(sign)
+
+	if address == "" {
+		address = sample.Secp256k1AccAddress().String()
+	}
+
+	m := machinetypes.Machine{
+		Name:               name,
+		Ticker:             name + "_ticker",
+		Domain:             "lab.r3c.network",
+		Reissue:            true,
+		Amount:             1000,
+		Precision:          8,
+		IssuerPlanetmint:   planetmintPubKey,
+		IssuerLiquid:       liquidPubKey,
+		MachineId:          pubKey,
+		Metadata:           &metadata,
+		Type:               1,
+		MachineIdSignature: signatureHex,
+		Address:            address,
+	}
+	return m
+}
+
+func MachineIndex(pubKey string, planetmintPubKey string, liquidPubKey string) machinetypes.MachineIndex {
+	return machinetypes.MachineIndex{
+		MachineId:        pubKey,
+		IssuerPlanetmint: planetmintPubKey,
+		IssuerLiquid:     liquidPubKey,
+	}
+}
+
+func Metadata() machinetypes.Metadata {
+	return machinetypes.Metadata{
+		Gps:               "{\"Latitude\":\"-48.876667\",\"Longitude\":\"-123.393333\"}",
+		Device:            "{\"Manufacturer\": \"RDDL\",\"Serial\":\"AdnT2uyt\"}",
+		AssetDefinition:   "{\"Version\": \"0.1\"}",
+		AdditionalDataCID: "CID",
+	}
+}
+
+func TrustAnchor(pubkey string) machinetypes.TrustAnchor {
+	return machinetypes.TrustAnchor{
+		Pubkey: pubkey,
+	}
+}
+
+func MintRequest(beneficiaryAddr string, amount uint64, txhash string) daotypes.MintRequest {
+	return daotypes.MintRequest{
+		Beneficiary:  beneficiaryAddr,
+		Amount:       amount,
+		LiquidTxHash: txhash,
+	}
+}