--- /dev/null
+package gccgoexportdata_test
+
+import (
+ "go/types"
+ "os"
+ "testing"
+
+ "golang.org/x/tools/go/gccgoexportdata"
+)
+
+// Test ensures this package can read gccgo export data from the
+// .go_export from a standalone ELF file or such a file in an archive
+// library.
+//
+// The testdata/{short,long}.a ELF archive files were produced by:
+//
+// $ echo 'package foo; func F()' > foo.go
+// $ gccgo -c -fgo-pkgpath blah foo.go
+// $ objcopy -j .go_export foo.o foo.gox
+// $ ar q short.a foo.gox
+// $ objcopy -j .go_export foo.o name-longer-than-16-bytes.gox
+// $ ar q long.a name-longer-than-16-bytes.gox
+//
+// The file long.a contains an archive string table.
+//
+// The errors.gox file (an ELF object file) comes from the toolchain's
+// standard library.
+func Test(t *testing.T) {
+ for _, test := range []struct {
+ filename, path, member, wantType string
+ }{
+ {"testdata/errors.gox", "errors", "New", "func(text string) error"},
+ {"testdata/short.a", "short", "F", "func()"},
+ {"testdata/long.a", "long", "F", "func()"},
+ } {
+ t.Logf("filename = %s", test.filename)
+ f, err := os.Open(test.filename)
+ if err != nil {
+ t.Error(err)
+ continue
+ }
+ defer f.Close()
+ r, err := gccgoexportdata.NewReader(f)
+ if err != nil {
+ t.Error(err)
+ continue
+ }
+
+ imports := make(map[string]*types.Package)
+ pkg, err := gccgoexportdata.Read(r, nil, imports, test.path)
+ if err != nil {
+ t.Error(err)
+ continue
+ }
+
+ // Check type of designated package member.
+ obj := pkg.Scope().Lookup(test.member)
+ if obj == nil {
+ t.Errorf("%s.%s not found", test.path, test.member)
+ continue
+ }
+ if obj.Type().String() != test.wantType {
+ t.Errorf("%s.%s.Type = %s, want %s",
+ test.path, test.member, obj.Type(), test.wantType)
+ }
+ }
+}