--- /dev/null
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package cmdtest
+
+import (
+ "testing"
+
+ "fmt"
+
+ "golang.org/x/tools/internal/span"
+)
+
+func (r *runner) Highlight(t *testing.T, spn span.Span, spans []span.Span) {
+ var expect string
+ for _, l := range spans {
+ expect += fmt.Sprintln(l)
+ }
+ expect = r.Normalize(expect)
+
+ uri := spn.URI()
+ filename := uri.Filename()
+ target := filename + ":" + fmt.Sprint(spn.Start().Line()) + ":" + fmt.Sprint(spn.Start().Column())
+ got, _ := r.NormalizeGoplsCmd(t, "highlight", target)
+ if expect != got {
+ t.Errorf("highlight failed for %s expected:\n%s\ngot:\n%s", target, expect, got)
+ }
+}