Fix linting errors

Makefile

@@ -28,6 +28,9 @@ test-all:
 	@./script/test_all.sh
 	@./script/test_cockroach.sh
 
+lint:
+	golangci-lint run
+
 dev:
 	go build
 	@echo "You can now execute ./pgweb"

pkg/api/api.go

@@ -533,7 +533,7 @@ func DataExport(c *gin.Context) {
 	if dump.Table != "" {
 		filename = filename + "_" + dump.Table
 	}
-	reg := regexp.MustCompile("[^._\\w]+")
+	reg := regexp.MustCompile(`[^._\\w]+`)
 	cleanFilename := reg.ReplaceAllString(filename, "")
 
 	c.Header(

pkg/api/backend_test.go

@@ -139,10 +139,17 @@ func startTestBackend(ctx context.Context, listenAddr string) {
 	})
 
 	server := &http.Server{Addr: listenAddr, Handler: router}
-	go server.ListenAndServe()
+	go mustStartServer(server)
 
-	select {
+	<-ctx.Done()
-	case <-ctx.Done():
+	if err := server.Shutdown(context.Background()); err != nil && err != http.ErrServerClosed {
-		server.Shutdown(context.Background())
+		panic(err)
+	}
+}
+
+func mustStartServer(server *http.Server) {
+	err := server.ListenAndServe()
+	if err != nil && err != http.ErrServerClosed {
+		panic(err)
 	}
 }

pkg/cli/cli.go

@@ -221,7 +221,10 @@ func openPage() {
 		return
 	}
 
-	exec.Command("open", url).Output()
+	_, err = exec.Command("open", url).Output()
+	if err != nil {
+		fmt.Println("Unable to auto-open pgweb URL:", err)
+	}
 }
 
 func Run() {

pkg/client/client_test.go

@@ -26,7 +26,7 @@ var (
 
 func mapKeys(data map[string]*Objects) []string {
 	result := []string{}
-	for k, _ := range data {
+	for k := range data {
 		result = append(result, k)
 	}
 	return result
@@ -421,8 +421,10 @@ func testHistoryUniqueness(t *testing.T) {
 	url := fmt.Sprintf("postgres://%s@%s:%s/%s?sslmode=disable", serverUser, serverHost, serverPort, serverDatabase)
 	client, _ := NewFromUrl(url, nil)
 
-	client.Query("SELECT * FROM books WHERE id = 1")
+	for i := 0; i < 3; i++ {
-	client.Query("SELECT * FROM books WHERE id = 1")
+		_, err := client.Query("SELECT * FROM books WHERE id = 1")
+		assert.NoError(t, err)
+	}
 
 	assert.Equal(t, 1, len(client.History))
 	assert.Equal(t, "SELECT * FROM books WHERE id = 1", client.History[0].Query)
@@ -445,7 +447,8 @@ func testReadOnlyMode(t *testing.T) {
 	assert.Error(t, err, "query contains keywords not allowed in read-only mode")
 
 	// Turn off guard
-	client.db.Exec("SET default_transaction_read_only=off;")
+	_, err = client.db.Exec("SET default_transaction_read_only=off;")
+	assert.NoError(t, err)
 
 	_, err = client.Query("\nCREATE TABLE foobar(id integer);\n")
 	assert.NotNil(t, err)
@@ -471,6 +474,7 @@ func TestAll(t *testing.T) {
 	setupClient()
 
 	testNewClientFromUrl(t)
+	testNewClientFromUrl2(t)
 	testClientIdleTime(t)
 	testTest(t)
 	testInfo(t)

pkg/client/result.go

@@ -5,6 +5,7 @@ import (
 	"encoding/csv"
 	"encoding/json"
 	"fmt"
+	"log"
 	"math"
 	"strconv"
 	"time"
@@ -88,7 +89,9 @@ func (res *Result) CSV() []byte {
 	buff := &bytes.Buffer{}
 	writer := csv.NewWriter(buff)
 
-	writer.Write(res.Columns)
+	if err := writer.Write(res.Columns); err != nil {
+		log.Printf("result csv write error: %v\n", err)
+	}
 
 	for _, row := range res.Rows {
 		record := make([]string, len(res.Columns))

pkg/connection/port.go

@@ -11,10 +11,7 @@ import (
 func IsPortAvailable(port int) bool {
 	conn, err := net.Dial("tcp", fmt.Sprintf("127.0.0.1:%v", port))
 	if err != nil {
-		if strings.Index(err.Error(), "connection refused") > 0 {
+		return strings.Index(err.Error(), "connection refused") > 0
-			return true
-		}
-		return false
 	}
 
 	conn.Close()