build: Add gosimple linter to goclean.sh

.travis.yml

@@ -1,11 +1,10 @@
 language: go
 go:
-  - 1.6.3
-  - 1.7
+  - 1.6.x
+  - 1.7.x
 sudo: false
 install:
   - go get -d -t -v ./...
-  - go get -v golang.org/x/tools/cmd/cover
   - go get -v github.com/alecthomas/gometalinter
   - gometalinter --install
 script:

address_test.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2013, 2014 The btcsuite developers
+// Copyright (c) 2013-2017 The btcsuite developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -12,14 +12,10 @@ import (
 	"testing"
 
 	"github.com/btcsuite/btcd/chaincfg"
-	"github.com/btcsuite/btcd/wire"
 	"github.com/btcsuite/btcutil"
 	"github.com/btcsuite/golangcrypto/ripemd160"
 )
 
-// invalidNet is an invalid bitcoin network.
-const invalidNet = wire.BitcoinNet(0xffffffff)
-
 func TestAddresses(t *testing.T) {
 	tests := []struct {
 		name    string

appdata.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2014 The btcsuite developers
+// Copyright (c) 2013-2017 The btcsuite developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -24,10 +24,8 @@ func appDataDir(goos, appName string, roaming bool) string {
 	}
 
 	// The caller really shouldn't prepend the appName with a period, but
-	// if they do, handle it gracefully by stripping it.
-	if strings.HasPrefix(appName, ".") {
-		appName = appName[1:]
-	}
+	// if they do, handle it gracefully by trimming it.
+	appName = strings.TrimPrefix(appName, ".")
 	appNameUpper := string(unicode.ToUpper(rune(appName[0]))) + appName[1:]
 	appNameLower := string(unicode.ToLower(rune(appName[0]))) + appName[1:]
 

base58/base58_test.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2013-2014 The btcsuite developers
+// Copyright (c) 2013-2017 The btcsuite developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -80,7 +80,7 @@ func TestBase58(t *testing.T) {
 			t.Errorf("hex.DecodeString failed failed #%d: got: %s", x, test.in)
 			continue
 		}
-		if res := base58.Decode(test.out); bytes.Equal(res, b) != true {
+		if res := base58.Decode(test.out); !bytes.Equal(res, b) {
 			t.Errorf("Decode test #%d failed: got: %q want: %q",
 				x, res, test.in)
 			continue

coinset/coins.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2014-2016 The btcsuite developers
+// Copyright (c) 2014-2017 The btcsuite developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -203,10 +203,8 @@ func (s MinNumberCoinSelector) CoinSelect(targetValue btcutil.Amount, coins []Co
 	sortedCoins := make([]Coin, 0, len(coins))
 	sortedCoins = append(sortedCoins, coins...)
 	sort.Sort(sort.Reverse(byAmount(sortedCoins)))
-	return (&MinIndexCoinSelector{
-		MaxInputs:       s.MaxInputs,
-		MinChangeAmount: s.MinChangeAmount,
-	}).CoinSelect(targetValue, sortedCoins)
+
+	return MinIndexCoinSelector(s).CoinSelect(targetValue, sortedCoins)
 }
 
 // MaxValueAgeCoinSelector is a CoinSelector that attempts to construct
@@ -227,10 +225,8 @@ func (s MaxValueAgeCoinSelector) CoinSelect(targetValue btcutil.Amount, coins []
 	sortedCoins := make([]Coin, 0, len(coins))
 	sortedCoins = append(sortedCoins, coins...)
 	sort.Sort(sort.Reverse(byValueAge(sortedCoins)))
-	return (&MinIndexCoinSelector{
-		MaxInputs:       s.MaxInputs,
-		MinChangeAmount: s.MinChangeAmount,
-	}).CoinSelect(targetValue, sortedCoins)
+
+	return MinIndexCoinSelector(s).CoinSelect(targetValue, sortedCoins)
 }
 
 // MinPriorityCoinSelector is a CoinSelector that attempts to construct

goclean.sh

@@ -4,9 +4,10 @@
 # 2. goimports     (https://github.com/bradfitz/goimports)
 # 3. golint        (https://github.com/golang/lint)
 # 4. go vet        (http://golang.org/cmd/vet)
-# 5. unconvert     (https://github.com/mdempsky/unconvert)
-# 6. race detector (http://blog.golang.org/race-detector)
-# 7. test coverage (http://blog.golang.org/cover)
+# 5. gosimple      (https://github.com/dominikh/go-simple)
+# 6. unconvert     (https://github.com/mdempsky/unconvert)
+# 7. race detector (http://blog.golang.org/race-detector)
+# 8. test coverage (http://blog.golang.org/cover)
 #
 # gometalint (github.com/alecthomas/gometalinter) is used to run each each
 # static checker.
@@ -19,6 +20,7 @@ test -z "$(gometalinter --disable-all \
 --enable=goimports \
 --enable=golint \
 --enable=vet \
+--enable=gosimple \
 --enable=unconvert \
 --deadline=120s ./... | grep -v 'ExampleNew' 2>&1 | tee /dev/stderr)"
 env GORACE="halt_on_error=1" go test -race ./...

hdkeychain/extendedkey_test.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2014 The btcsuite developers
+// Copyright (c) 2014-2017 The btcsuite developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -897,7 +897,7 @@ func TestZero(t *testing.T) {
 	// times.
 	testZeroed := func(i int, testName string, key *hdkeychain.ExtendedKey) bool {
 		// Zeroing a key should result in it no longer being private
-		if key.IsPrivate() != false {
+		if key.IsPrivate() {
 			t.Errorf("IsPrivate #%d (%s): mismatched key type -- "+
 				"want private %v, got private %v", i, testName,
 				false, key.IsPrivate())