chore: enable github actions validation (#36)

Enable github actions validation of code and remove travis build status
from README.md as travis is no longer in use.

Fix lint errors from gofumpt, this includes switching from []struct
with a name to map[string]struct for tests, which results in clearer
 subtest definition.

Also:
* Remove deprecated linters
* Enabling new useful linters ones applying the needed fixes.
* Use bash for cache path step to prevent different commands from
  being needed on Windows.

.gitattributes

@@ -0,0 +1 @@
+*.go text eol=lf

.github/workflows/go.yml

@@ -0,0 +1,74 @@
+name: Go build, test and lint
+
+on:
+  push:
+    tags:
+      - v*
+    branches:
+      - main
+  pull_request:
+permissions:
+  contents: read
+
+jobs:
+  go:
+    strategy:
+      matrix:
+        go: [1.19]
+        golangcli: [v1.50.1]
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    name: lint
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Setup
+        uses: actions/setup-go@v3
+        with:
+          go-version: ${{ matrix.go }}
+
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Go Cache Paths
+        id: go-cache-paths
+        shell: bash
+        run: |
+          echo "GOCACHE=$(go env GOCACHE)" >> $GITHUB_OUTPUT
+          echo "GOMODCACHE=$(go env GOMODCACHE)" >> $GITHUB_OUTPUT
+
+      - name: Go Build Cache
+        uses: actions/cache@v3
+        with:
+          path: ${{ steps.go-cache-paths.outputs.GOCACHE }}
+          key: ${{ runner.os }}-GOCACHE-${{ hashFiles('**/go.sum') }}
+
+      - name: Go Mod Cache
+        uses: actions/cache@v3
+        with:
+          path: ${{ steps.go-cache-paths.outputs.GOMODCACHE }}
+          key: ${{ runner.os }}-GOMODCACHE-${{ hashFiles('**/go.sum') }}
+
+      - name: Go Lint Standard
+        if: runner.os != 'Windows'
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: ${{ matrix.golangci }}
+          args: "--out-${NO_FUTURE}format colored-line-number"
+          skip-pkg-cache: true
+          skip-build-cache: true
+
+      - name: Go Lint Windows
+        if: runner.os == 'Windows'
+        uses: golangci/golangci-lint-action@v3
+        env:
+          outformat: out-format
+        with:
+          version: ${{ matrix.golangci }}
+          args: "--%outformat% colored-line-number"
+          skip-pkg-cache: true
+          skip-build-cache: true
+
+      - name: Go Build
+        run: go build ./...
+
+      - name: Go Test
+        run: go test -race -v ./...

.golangci.yml

@@ -1,11 +1,9 @@
 linters:
   enable:
-    - deadcode
     - errcheck
     - ineffassign
-    - structcheck
+    - unused
     - typecheck
-    - varcheck
     - bodyclose
     - depguard
     - dogsled
@@ -16,11 +14,9 @@ linters:
     - gocyclo
     - gofmt
     - goimports
-    - golint
+    - revive
     - gosec
     - gosimple
-    - interfacer
-    - maligned
     - misspell
     - nakedret
     - prealloc
@@ -32,3 +28,12 @@ linters:
     - whitespace
     - govet
     - gocognit
+    - dupword
+    - errorlint
+    - godot
+    - gofumpt
+    - nolintlint
+    - nosprintfhostport
+    - tenv
+    - thelper
+    - wrapcheck

README.md

@@ -1,4 +1,4 @@
-# TeamSpeak 3 [![Go Report Card](https://goreportcard.com/badge/github.com/multiplay/go-ts3)](https://goreportcard.com/report/github.com/multiplay/go-ts3) [![License](https://img.shields.io/badge/license-BSD-blue.svg)](https://github.com/multiplay/go-ts3/blob/master/LICENSE) [![GoDoc](https://godoc.org/github.com/multiplay/go-ts3?status.svg)](https://godoc.org/github.com/multiplay/go-ts3) [![Build Status](https://travis-ci.org/multiplay/go-ts3.svg?branch=master)](https://travis-ci.org/multiplay/go-ts3)
+# TeamSpeak 3 [![Go Report Card](https://goreportcard.com/badge/github.com/multiplay/go-ts3)](https://goreportcard.com/report/github.com/multiplay/go-ts3) [![License](https://img.shields.io/badge/license-BSD-blue.svg)](https://github.com/multiplay/go-ts3/blob/master/LICENSE) [![GoDoc](https://godoc.org/github.com/multiplay/go-ts3?status.svg)](https://godoc.org/github.com/multiplay/go-ts3)
 
 go-ts3 is a [Go](http://golang.org/) client for the [TeamSpeak 3 ServerQuery Protocol](http://media.teamspeak.com/ts3_literature/TeamSpeak%203%20Server%20Query%20Manual.pdf).
 

basic_cmds.go

@@ -69,7 +69,7 @@ func (c *Client) Whoami() (*ConnectionInfo, error) {
 	return i, nil
 }
 
-// Properties that can be changed with ClientUpdate
+// Properties that can be changed with ClientUpdate.
 const (
 	ClientNickname           = "client_nickname"
 	ClientIsTalker           = "client_is_talker"

basic_cmds_test.go

@@ -26,6 +26,7 @@ func TestCmdsBasic(t *testing.T) {
 	}()
 
 	auth := func(t *testing.T) {
+		t.Helper()
 		if err = c.Login("user", "pass"); !assert.NoError(t, err) {
 			return
 		}
@@ -36,6 +37,7 @@ func TestCmdsBasic(t *testing.T) {
 	}
 
 	version := func(t *testing.T) {
+		t.Helper()
 		v, err := c.Version()
 		if !assert.NoError(t, err) {
 			return
@@ -47,14 +49,17 @@ func TestCmdsBasic(t *testing.T) {
 	}
 
 	useID := func(t *testing.T) {
+		t.Helper()
 		assert.NoError(t, c.Use(1))
 	}
 
 	usePort := func(t *testing.T) {
+		t.Helper()
 		assert.NoError(t, c.UsePort(1024))
 	}
 
 	whoami := func(t *testing.T) {
+		t.Helper()
 		info, err := c.Whoami()
 		if !assert.NoError(t, err) {
 			return

client.go

@@ -2,6 +2,7 @@ package ts3
 
 import (
 	"bufio"
+	"errors"
 	"fmt"
 	"io"
 	"net"
@@ -146,15 +147,15 @@ func NewClient(addr string, options ...func(c *Client) error) (*Client, error) {
 
 	var err error
 	if c.conn, err = net.DialTimeout("tcp", addr, c.timeout); err != nil {
-		return nil, err
+		return nil, fmt.Errorf("client: dial timeout: %w", err)
 	}
 
 	c.scanner = bufio.NewScanner(bufio.NewReader(c.conn))
 	c.scanner.Buffer(c.buf, c.maxBufSize)
 	c.scanner.Split(ScanLines)
 
 	if err := c.conn.SetDeadline(time.Now().Add(c.timeout)); err != nil {
-		return nil, err
+		return nil, fmt.Errorf("client: set deadline: %w", err)
 	}
 
 	// Read the connection header
@@ -163,7 +164,7 @@ func NewClient(addr string, options ...func(c *Client) error) (*Client, error) {
 	}
 
 	if l := c.scanner.Text(); l != c.connectHeader {
-		return nil, fmt.Errorf("invalid connection header %q", l)
+		return nil, fmt.Errorf("client: invalid connection header %q", l)
 	}
 
 	// Slurp the banner
@@ -172,7 +173,7 @@ func NewClient(addr string, options ...func(c *Client) error) (*Client, error) {
 	}
 
 	if err := c.conn.SetReadDeadline(time.Time{}); err != nil {
-		return nil, err
+		return nil, fmt.Errorf("client: set read deadline: %w", err)
 	}
 
 	// Start handlers
@@ -187,7 +188,7 @@ func (c *Client) messageHandler() {
 	for {
 		if c.scanner.Scan() {
 			line := c.scanner.Text()
-			// nolint: gocritic
+			//nolint: gocritic
 			if line == "error id=0 msg=ok" {
 				c.err <- nil
 			} else if matches := respTrailerRe.FindStringSubmatch(line); len(matches) == 4 {
@@ -206,7 +207,7 @@ func (c *Client) messageHandler() {
 		} else {
 			err := c.scanErr()
 			c.err <- err
-			if err == io.ErrUnexpectedEOF {
+			if errors.Is(err, io.ErrUnexpectedEOF) {
 				close(c.disconnect)
 				return
 			}
@@ -290,16 +291,18 @@ func (c *Client) Close() error {
 
 	if err != nil {
 		return err
+	} else if err2 != nil {
+		return fmt.Errorf("client: close: %w", err2)
 	}
 
-	return err2
+	return nil
 }
 
 // scanError returns the error from the scanner if non-nil,
 // `io.ErrUnexpectedEOF` otherwise.
 func (c *Client) scanErr() error {
 	if err := c.scanner.Err(); err != nil {
-		return err
+		return fmt.Errorf("client: scan: %w", err)
 	}
 	return io.ErrUnexpectedEOF
 }

cmd.go

@@ -109,7 +109,7 @@ func NewArg(key string, val interface{}) *Arg {
 	return &Arg{key: key, val: fmt.Sprint(val)}
 }
 
-// ArgString implements CmdArg
+// ArgString implements CmdArg.
 func (a *Arg) ArgString() string {
 	return fmt.Sprintf("%v=%v", encoder.Replace(a.key), encoder.Replace(a.val))
 }

cmd_test.go

@@ -7,66 +7,73 @@ import (
 )
 
 func TestCmd(t *testing.T) {
-	tests := []struct {
-		name   string
+	tests := map[string]struct {
 		cmd    *Cmd
 		expect string
 	}{
-		{"cmd", NewCmd("version"),
+		"cmd": {
+			NewCmd("version"),
 			"version",
 		},
-		{"arg", NewCmd("use").
-			WithArgs(NewArg("sid", 1)),
+		"arg": {
+			NewCmd("use").
+				WithArgs(NewArg("sid", 1)),
 			"use sid=1",
 		},
-		{"args", NewCmd("use").
-			WithArgs(NewArg("sid", 1), NewArg("port", 1234)),
+		"args": {
+			NewCmd("use").
+				WithArgs(NewArg("sid", 1), NewArg("port", 1234)),
 			"use sid=1 port=1234",
 		},
-		{"args-option", NewCmd("use").
-			WithArgs(NewArg("sid", 1), NewArg("port", 1234)).
-			WithOptions("-virtual"),
+		"args-option": {
+			NewCmd("use").
+				WithArgs(NewArg("sid", 1), NewArg("port", 1234)).
+				WithOptions("-virtual"),
 			"use sid=1 port=1234 -virtual",
 		},
-		{"options", NewCmd("serverlist").
-			WithOptions("-uid", "-short"),
+		"options": {
+			NewCmd("serverlist").
+				WithOptions("-uid", "-short"),
 			"serverlist -uid -short",
 		},
-		{"arg-group-single", NewCmd("servergroupdelperm").
-			WithArgs(
-				NewArg("sgid", 1),
-				NewArgGroup(NewArg("permid", 1), NewArg("permid", 2)),
-			),
+		"arg-group-single": {
+			NewCmd("servergroupdelperm").
+				WithArgs(
+					NewArg("sgid", 1),
+					NewArgGroup(NewArg("permid", 1), NewArg("permid", 2)),
+				),
 			"servergroupdelperm sgid=1 permid=1|permid=2",
 		},
-		{"arg-group-multi", NewCmd("servergroupaddperm").
-			WithArgs(
-				NewArg("sgid", 1),
-				NewArgGroup(
-					NewArgSet(
-						NewArg("permid", 1),
-						NewArg("permvalue", 1),
-						NewArg("permnegated", 0),
-						NewArg("permskip", 0),
-					),
-					NewArgSet(
-						NewArg("permid", 2),
-						NewArg("permvalue", 2),
-						NewArg("permnegated", 1),
-						NewArg("permskip", 1),
+		"arg-group-multi": {
+			NewCmd("servergroupaddperm").
+				WithArgs(
+					NewArg("sgid", 1),
+					NewArgGroup(
+						NewArgSet(
+							NewArg("permid", 1),
+							NewArg("permvalue", 1),
+							NewArg("permnegated", 0),
+							NewArg("permskip", 0),
+						),
+						NewArgSet(
+							NewArg("permid", 2),
+							NewArg("permvalue", 2),
+							NewArg("permnegated", 1),
+							NewArg("permskip", 1),
+						),
 					),
 				),
-			),
 			"servergroupaddperm sgid=1 permid=1 permvalue=1 permnegated=0 permskip=0|permid=2 permvalue=2 permnegated=1 permskip=1",
 		},
-		{"escaped-chars", NewCmd("servergroupadd").
-			WithArgs(NewArg("name", "Chars:\\/ |\a\b\f\n\r\t\v")),
+		"escaped-chars": {
+			NewCmd("servergroupadd").
+				WithArgs(NewArg("name", "Chars:\\/ |\a\b\f\n\r\t\v")),
 			`servergroupadd name=Chars:\\\/\s\p\a\b\f\n\r\t\v`,
 		},
 	}
 
-	for _, tc := range tests {
-		t.Run(tc.name, func(t *testing.T) {
+	for name, tc := range tests {
+		t.Run(name, func(t *testing.T) {
 			assert.Equal(t, tc.expect+"\n", tc.cmd.String())
 		})
 	}