Add drone CI

.drone.yml

@@ -0,0 +1,13 @@
+kind: pipeline
+name: default
+type: docker
+
+steps:
+- name: lint
+  image: golangci/golangci-lint:latest
+  commands:
+  - golangci-lint run
+- name: test
+  image: golangci/golangci-lint:latest
+  commands:
+  - go test -v ./...

.golangci.yaml

@@ -0,0 +1,30 @@
+run:
+  modules-download-mode: readonly
+
+linters:
+  presets:
+    - bugs
+    - unused
+    - import
+    - module
+
+  enable:
+    - gofumpt
+    - godot
+    - lll
+    - predeclared
+    - gocognit
+    - nestif
+
+  disable:
+    - scopelint
+
+linters-settings:
+  godot:
+    capital: true
+  lll:
+    line-length: 88
+  gocognit:
+    min-complexity: 10
+  nestif:
+    min-complexity: 3

.pre-commit-config.yaml

@@ -0,0 +1,7 @@
+repos:
+- repo: https://github.com/tekwizely/pre-commit-golang
+  rev: v1.0.0-beta.4
+  hooks:
+  - id: golangci-lint-repo-mod
+    name: GolangCI Lint
+  - id: go-test-repo-mod

ci_ingo.go

@@ -5,7 +5,7 @@ import (
 	"strings"
 )
 
-// CI holds information about the current CI environment
+// CI holds information about the current CI environment.
 type CI struct {
 	Name     string
 	Constant string
@@ -25,7 +25,7 @@ type envMatcher interface {
 	matchEnv(env map[string]string) bool
 }
 
-// simpleEnvMatcher Test if the specified environment variable is set
+// simpleEnvMatcher Test if the specified environment variable is set.
 type simpleEnvMatcher struct {
 	envvar string
 }
@@ -35,7 +35,7 @@ func (m simpleEnvMatcher) matchEnv(env map[string]string) bool {
 	return exists
 }
 
-// anyEnvMatcher Test if any of the specified environment variables is set
+// anyEnvMatcher Test if any of the specified environment variables is set.
 type anyEnvMatcher struct {
 	envvars []string
 }
@@ -49,7 +49,7 @@ func (m anyEnvMatcher) matchEnv(env map[string]string) bool {
 	return false
 }
 
-// allEnvMatcher Test if all of the specified environment variables are set
+// allEnvMatcher Test if all of the specified environment variables are set.
 type allEnvMatcher struct {
 	envvars []string
 }
@@ -64,7 +64,7 @@ func (m allEnvMatcher) matchEnv(env map[string]string) bool {
 }
 
 // kvEnvMatcher Test if all specified environment variables are set to the
-// specified values
+// specified values.
 type kvEnvMatcher struct {
 	envvars map[string]string
 }
@@ -79,7 +79,7 @@ func (m kvEnvMatcher) matchEnv(env map[string]string) bool {
 }
 
 // neEnvMatcher Test if the specified environment variable is set, but not
-// to the specified value
+// to the specified value.
 type neEnvMatcher struct {
 	envvar string
 	ne     string
@@ -93,7 +93,9 @@ func (m neEnvMatcher) matchEnv(env map[string]string) bool {
 }
 
 func getEnvironment() map[string]string {
-	getenvironment := func(data []string, getkeyval func(item string) (key, val string)) map[string]string {
+	getenvironment := func(
+		data []string, getkeyval func(item string) (key, val string)) map[string]string {
+
 		items := make(map[string]string)
 		for _, item := range data {
 			key, val := getkeyval(item)