tests/: minor refactoring to enable Ethereum tests

params/protocol_params.go

@@ -20,13 +20,16 @@ import "math/big"
 
 var (
 	TargetGasLimit = GenesisGasLimit // The artificial target
-)
 
-const (
+	// the followings are modified by Quorum and purposely moved from `const` section
+	// so to faclitate the execution of Ethereum Tests
+	// @see tests/init_test.go#TestMain
 	GasLimitBoundDivisor uint64 = 4096      // The bound divisor of the gas limit, used in update calculations.
 	MinGasLimit          uint64 = 700000000 // Minimum the gas limit may ever be.
 	GenesisGasLimit      uint64 = 800000000 // Gas limit of the Genesis block.
+)
 
+const (
 	MaximumExtraDataSize  uint64 = 32    // Maximum size extra data may be after Genesis.
 	ExpByteGas            uint64 = 10    // Times ceil(log256(exponent)) for the EXP instruction.
 	SloadGas              uint64 = 50    // Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added.

tests/init_test.go

@@ -261,3 +261,20 @@ func runTestFunc(runTest interface{}, t *testing.T, name string, m reflect.Value
 		m.MapIndex(reflect.ValueOf(key)),
 	})
 }
+
+func TestMain(m *testing.M) {
+	backupMinGasLimit := params.MinGasLimit
+	backupGasLimitBoundDivisor := params.GasLimitBoundDivisor
+	backupGenesisGasLimit := params.GenesisGasLimit
+	defer func() {
+		params.GasLimitBoundDivisor = backupGasLimitBoundDivisor
+		params.MinGasLimit = backupMinGasLimit
+		params.GenesisGasLimit = backupGenesisGasLimit
+	}()
+	params.GasLimitBoundDivisor = 1024
+	params.MinGasLimit = 5000
+	params.GenesisGasLimit = 4712388
+
+	retCode := m.Run()
+	os.Exit(retCode)
+}