Add lint config (#5)

Author: vearutop

.golangci.yml

@@ -0,0 +1,43 @@
+# See https://github.com/golangci/golangci-lint/blob/master/.golangci.example.yml
+run:
+  tests: true
+
+linters-settings:
+  errcheck:
+    check-type-assertions: true
+    check-blank: true
+  gocyclo:
+    min-complexity: 20
+  dupl:
+    threshold: 100
+  misspell:
+    locale: US
+  unused:
+    check-exported: false
+  unparam:
+    check-exported: true
+
+linters:
+  enable-all: true
+  disable:
+    - lll
+    - maligned
+    - gochecknoglobals
+    - gomnd
+    - wrapcheck
+    - paralleltest
+    - forbidigo
+    - exhaustivestruct
+
+issues:
+  exclude-use-default: false
+  exclude-rules:
+    - linters:
+        - gomnd
+        - goconst
+        - goerr113
+        - noctx
+        - funlen
+        - dupl
+      path: "_test.go"
+

Makefile

@@ -1,3 +1,5 @@
+#GOLANGCI_LINT_VERSION := "v1.37.1" # Optional configuration to pinpoint golangci-lint version.
+
 # The head of Makefile determines location of dev-go to include standard targets.
 GO ?= go
 export GO111MODULE = on
@@ -26,10 +28,10 @@ ifeq ($(DEVGO_PATH),)
 endif
 
 -include $(DEVGO_PATH)/makefiles/main.mk
+-include $(DEVGO_PATH)/makefiles/lint.mk
 -include $(DEVGO_PATH)/makefiles/test-unit.mk
 -include $(DEVGO_PATH)/makefiles/bench.mk
--include $(DEVGO_PATH)/makefiles/lint.mk
--include $(DEVGO_PATH)/makefiles/github-actions.mk
+-include $(DEVGO_PATH)/makefiles/reset-ci.mk
 
 ## Run tests
 test: test-unit

context_test.go

@@ -2,9 +2,10 @@ package stats_test
 
 import (
 	"context"
+	"testing"
+
 	"github.com/bool64/stats"
 	"github.com/stretchr/testify/assert"
-	"testing"
 )
 
 func TestAddKeysAndValues(t *testing.T) {
@@ -25,6 +26,7 @@ func TestAddKeysAndValues(t *testing.T) {
 
 func BenchmarkAddKeysAndValues(b *testing.B) {
 	b.ReportAllocs()
+
 	for i := 0; i < b.N; i++ {
 		ctx := stats.AddKeysAndValues(context.Background(), "k1", "one", "k2", "two")
 		_ = stats.KeysAndValues(ctx)

dev_test.go

@@ -1,3 +1,3 @@
 package stats_test
 
-import _ "github.com/bool64/dev"
+import _ "github.com/bool64/dev" // Include CI/Dev scripts to project.

go.mod

@@ -3,6 +3,6 @@ module github.com/bool64/stats
 go 1.13
 
 require (
-	github.com/bool64/dev v0.1.20
+	github.com/bool64/dev v0.1.21
 	github.com/stretchr/testify v1.4.0
 )

go.sum

@@ -1,5 +1,5 @@
-github.com/bool64/dev v0.1.20 h1:PeDScN45cziC5Swn1Xgam4LWDwaa5rsRB28vW9x771U=
-github.com/bool64/dev v0.1.20/go.mod h1:cTHiTDNc8EewrQPy3p1obNilpMpdmlUesDkFTF2zRWU=
+github.com/bool64/dev v0.1.21 h1:1wq0bbIHinSXcmQMPuyTrSLCeeMgn2m9Rfv3R4olEyQ=
+github.com/bool64/dev v0.1.21/go.mod h1:cTHiTDNc8EewrQPy3p1obNilpMpdmlUesDkFTF2zRWU=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=