+++ /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 packages_test
-
-import (
- "bytes"
- "io/ioutil"
- "path/filepath"
- "runtime"
- "strings"
- "testing"
- "time"
-
- "golang.org/x/tools/go/packages"
- "golang.org/x/tools/internal/testenv"
-)
-
-// This test loads the metadata for the standard library,
-func TestStdlibMetadata(t *testing.T) {
- // TODO(adonovan): see if we can get away without this hack.
- // if runtime.GOOS == "android" {
- // t.Skipf("incomplete std lib on %s", runtime.GOOS)
- // }
-
- testenv.NeedsGoPackages(t)
-
- runtime.GC()
- t0 := time.Now()
- var memstats runtime.MemStats
- runtime.ReadMemStats(&memstats)
- alloc := memstats.Alloc
-
- // Load, parse and type-check the program.
- cfg := &packages.Config{Mode: packages.LoadAllSyntax}
- pkgs, err := packages.Load(cfg, "std")
- if err != nil {
- t.Fatalf("failed to load metadata: %v", err)
- }
- if packages.PrintErrors(pkgs) > 0 {
- t.Fatal("there were errors loading standard library")
- }
-
- t1 := time.Now()
- runtime.GC()
- runtime.ReadMemStats(&memstats)
- runtime.KeepAlive(pkgs)
-
- t.Logf("Loaded %d packages", len(pkgs))
- numPkgs := len(pkgs)
-
- want := 150 // 186 on linux, 185 on windows.
- if numPkgs < want {
- t.Errorf("Loaded only %d packages, want at least %d", numPkgs, want)
- }
-
- t.Log("GOMAXPROCS: ", runtime.GOMAXPROCS(0))
- t.Log("Metadata: ", t1.Sub(t0)) // ~800ms on 12 threads
- t.Log("#MB: ", int64(memstats.Alloc-alloc)/1000000) // ~1MB
-}
-
-func TestCgoOption(t *testing.T) {
- if testing.Short() {
- t.Skip("skipping in short mode; uses tons of memory (https://golang.org/issue/14113)")
- }
-
- testenv.NeedsGoPackages(t)
-
- // TODO(adonovan): see if we can get away without these old
- // go/loader hacks now that we use the go list command.
- //
- // switch runtime.GOOS {
- // // On these systems, the net and os/user packages don't use cgo
- // // or the std library is incomplete (Android).
- // case "android", "plan9", "solaris", "windows":
- // t.Skipf("no cgo or incomplete std lib on %s", runtime.GOOS)
- // }
- // // In nocgo builds (e.g. linux-amd64-nocgo),
- // // there is no "runtime/cgo" package,
- // // so cgo-generated Go files will have a failing import.
- // if !build.Default.CgoEnabled {
- // return
- // }
-
- // Test that we can load cgo-using packages with
- // DisableCgo=true/false, which, among other things, causes go
- // list to select pure Go/native implementations, respectively,
- // based on build tags.
- //
- // Each entry specifies a package-level object and the generic
- // file expected to define it when cgo is disabled.
- // When cgo is enabled, the exact file is not specified (since
- // it varies by platform), but must differ from the generic one.
- //
- // The test also loads the actual file to verify that the
- // object is indeed defined at that location.
- for _, test := range []struct {
- pkg, declKeyword, name, genericFile string
- }{
- {"net", "type", "addrinfoErrno", "cgo_stub.go"},
- {"os/user", "func", "current", "lookup_stubs.go"},
- } {
- cfg := &packages.Config{Mode: packages.LoadSyntax}
- pkgs, err := packages.Load(cfg, test.pkg)
- if err != nil {
- t.Errorf("Load failed: %v", err)
- continue
- }
- if packages.PrintErrors(pkgs) > 0 {
- t.Error("there were errors loading standard library")
- continue
- }
- pkg := pkgs[0]
- obj := pkg.Types.Scope().Lookup(test.name)
- if obj == nil {
- t.Errorf("no object %s.%s", test.pkg, test.name)
- continue
- }
- posn := pkg.Fset.Position(obj.Pos())
- gotFile := filepath.Base(posn.Filename)
- filesMatch := gotFile == test.genericFile
-
- if filesMatch {
- t.Errorf("!DisableCgo: %s found in %s, want native file",
- obj, gotFile)
- }
-
- // Load the file and check the object is declared at the right place.
- b, err := ioutil.ReadFile(posn.Filename)
- if err != nil {
- t.Errorf("can't read %s: %s", posn.Filename, err)
- continue
- }
- line := string(bytes.Split(b, []byte("\n"))[posn.Line-1])
- // Don't assume posn.Column is accurate.
- if !strings.Contains(line, test.declKeyword+" "+test.name) {
- t.Errorf("%s: %s not declared here (looking at %q)", posn, obj, line)
- }
- }
-}
projects / dotfiles / .git / blobdiff