| 1 | // Copyright 2016 The Go Authors. All rights reserved. |
|---|---|
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | package gccgoexportdata_test |
| 6 | |
| 7 | import ( |
| 8 | "go/types" |
| 9 | "os" |
| 10 | "testing" |
| 11 | |
| 12 | "golang.org/x/tools/go/gccgoexportdata" |
| 13 | ) |
| 14 | |
| 15 | // Test ensures this package can read gccgo export data from the |
| 16 | // .go_export from a standalone ELF file or such a file in an archive |
| 17 | // library. |
| 18 | // |
| 19 | // The testdata/{short,long}.a ELF archive files were produced by: |
| 20 | // |
| 21 | // $ echo 'package foo; func F()' > foo.go |
| 22 | // $ gccgo -c -fgo-pkgpath blah foo.go |
| 23 | // $ objcopy -j .go_export foo.o foo.gox |
| 24 | // $ ar q short.a foo.gox |
| 25 | // $ objcopy -j .go_export foo.o name-longer-than-16-bytes.gox |
| 26 | // $ ar q long.a name-longer-than-16-bytes.gox |
| 27 | // |
| 28 | // The file long.a contains an archive string table. |
| 29 | // |
| 30 | // The errors.gox file (an ELF object file) comes from the toolchain's |
| 31 | // standard library. |
| 32 | func Test(t *testing.T) { |
| 33 | for _, test := range []struct { |
| 34 | filename, path, member, wantType string |
| 35 | }{ |
| 36 | {"testdata/errors.gox", "errors", "New", "func(text string) error"}, |
| 37 | {"testdata/short.a", "short", "F", "func()"}, |
| 38 | {"testdata/long.a", "long", "F", "func()"}, |
| 39 | } { |
| 40 | t.Logf("filename = %s", test.filename) |
| 41 | f, err := os.Open(test.filename) |
| 42 | if err != nil { |
| 43 | t.Error(err) |
| 44 | continue |
| 45 | } |
| 46 | defer f.Close() |
| 47 | r, err := gccgoexportdata.NewReader(f) |
| 48 | if err != nil { |
| 49 | t.Error(err) |
| 50 | continue |
| 51 | } |
| 52 | |
| 53 | imports := make(map[string]*types.Package) |
| 54 | pkg, err := gccgoexportdata.Read(r, nil, imports, test.path) |
| 55 | if err != nil { |
| 56 | t.Error(err) |
| 57 | continue |
| 58 | } |
| 59 | |
| 60 | // Check type of designated package member. |
| 61 | obj := pkg.Scope().Lookup(test.member) |
| 62 | if obj == nil { |
| 63 | t.Errorf("%s.%s not found", test.path, test.member) |
| 64 | continue |
| 65 | } |
| 66 | if obj.Type().String() != test.wantType { |
| 67 | t.Errorf("%s.%s.Type = %s, want %s", |
| 68 | test.path, test.member, obj.Type(), test.wantType) |
| 69 | } |
| 70 | } |
| 71 | } |
| 72 |
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