--- /dev/null
+// Copyright 2018 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 packagestest_test
+
+import (
+ "go/token"
+ "testing"
+
+ "golang.org/x/tools/go/expect"
+ "golang.org/x/tools/go/packages/packagestest"
+ "golang.org/x/tools/internal/span"
+)
+
+func TestExpect(t *testing.T) {
+ exported := packagestest.Export(t, packagestest.GOPATH, []packagestest.Module{{
+ Name: "golang.org/fake",
+ Files: packagestest.MustCopyFileTree("testdata"),
+ }})
+ defer exported.Cleanup()
+ checkCount := 0
+ if err := exported.Expect(map[string]interface{}{
+ "check": func(src, target token.Position) {
+ checkCount++
+ },
+ "boolArg": func(n *expect.Note, yes, no bool) {
+ if !yes {
+ t.Errorf("Expected boolArg first param to be true")
+ }
+ if no {
+ t.Errorf("Expected boolArg second param to be false")
+ }
+ },
+ "intArg": func(n *expect.Note, i int64) {
+ if i != 42 {
+ t.Errorf("Expected intarg to be 42")
+ }
+ },
+ "stringArg": func(n *expect.Note, name expect.Identifier, value string) {
+ if string(name) != value {
+ t.Errorf("Got string arg %v expected %v", value, name)
+ }
+ },
+ "directNote": func(n *expect.Note) {},
+ "range": func(r span.Range) {
+ if r.Start == token.NoPos || r.Start == 0 {
+ t.Errorf("Range had no valid starting position")
+ }
+ if r.End == token.NoPos || r.End == 0 {
+ t.Errorf("Range had no valid ending position")
+ } else if r.End <= r.Start {
+ t.Errorf("Range ending was not greater than start")
+ }
+ },
+ "checkEOF": func(n *expect.Note, p token.Pos) {
+ if p <= n.Pos {
+ t.Errorf("EOF was before the checkEOF note")
+ }
+ },
+ }); err != nil {
+ t.Fatal(err)
+ }
+ // We expect to have walked the @check annotations in all .go files,
+ // including _test.go files (XTest or otherwise). But to have walked the
+ // non-_test.go files only once. Hence wantCheck = 3 (testdata/test.go) + 1
+ // (testdata/test_test.go) + 1 (testdata/x_test.go)
+ wantCheck := 7
+ if wantCheck != checkCount {
+ t.Fatalf("Expected @check count of %v; got %v", wantCheck, checkCount)
+ }
+}