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