Fixed some lint and code convention violations

internal/cli/ws/direct_test.go

@@ -180,7 +180,8 @@ func TestDialModeFlags(t *testing.T) {
 		{"upgrade with addr", []string{"--http-upgrade", "--addr", "h:1"}, "none of the others"},
 	}
 	for _, tt := range tests {
-		_, err := cmdtest.Run(t, newRoot, "", append([]string{"dial"}, tt.args...)...)
+		args := append([]string{"dial"}, tt.args...)
+		_, err := cmdtest.Run(t, newRoot, "", args...)
 		if err == nil {
 			t.Errorf("%s: dial was accepted", tt.name)
 			continue
@@ -214,16 +215,25 @@ func TestDirectConn(t *testing.T) {
 // Without --addr, --direct uses the configured host and port.
 func TestDefaultAddr(t *testing.T) {
 	tests := []struct {
+		name string
 		conf config.JSCServer
 		want string
 	}{
-		{config.JSCServer{Host: "10.0.0.1", Port: 8080}, "10.0.0.1:8080"},
-		{config.JSCServer{Port: 9393}, "127.0.0.1:9393"},
-		{config.JSCServer{Host: "::1", Port: 9393}, "[::1]:9393"},
+		{"configured", config.JSCServer{
+			Host: "10.0.0.1",
+			Port: 8080,
+		}, "10.0.0.1:8080"},
+		{"every interface", config.JSCServer{
+			Port: 9393,
+		}, "127.0.0.1:9393"},
+		{"IPv6", config.JSCServer{
+			Host: "::1",
+			Port: 9393,
+		}, "[::1]:9393"},
 	}
 	for _, tt := range tests {
 		if got := defaultAddr(tt.conf); got != tt.want {
-			t.Errorf("defaultAddr(%+v) = %q; want %q", tt.conf, got, tt.want)
+			t.Errorf("%s: defaultAddr = %q; want %q", tt.name, got, tt.want)
 		}
 	}
 }