+++ /dev/null
-// Copyright 2013 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 loader_test
-
-// This file enumerates all packages beneath $GOROOT, loads them, plus
-// their external tests if any, runs the type checker on them, and
-// prints some summary information.
-
-import (
- "bytes"
- "fmt"
- "go/ast"
- "go/build"
- "go/token"
- "go/types"
- "io/ioutil"
- "path/filepath"
- "runtime"
- "strings"
- "testing"
- "time"
-
- "golang.org/x/tools/go/buildutil"
- "golang.org/x/tools/go/loader"
- "golang.org/x/tools/internal/testenv"
-)
-
-func TestStdlib(t *testing.T) {
- if runtime.GOOS == "android" {
- t.Skipf("incomplete std lib on %s", runtime.GOOS)
- }
- if testing.Short() {
- t.Skip("skipping in short mode; uses tons of memory (https://golang.org/issue/14113)")
- }
- testenv.NeedsTool(t, "go")
-
- runtime.GC()
- t0 := time.Now()
- var memstats runtime.MemStats
- runtime.ReadMemStats(&memstats)
- alloc := memstats.Alloc
-
- // Load, parse and type-check the program.
- ctxt := build.Default // copy
- ctxt.GOPATH = "" // disable GOPATH
- conf := loader.Config{Build: &ctxt}
- for _, path := range buildutil.AllPackages(conf.Build) {
- conf.ImportWithTests(path)
- }
-
- prog, err := conf.Load()
- if err != nil {
- t.Fatalf("Load failed: %v", err)
- }
-
- t1 := time.Now()
- runtime.GC()
- runtime.ReadMemStats(&memstats)
-
- numPkgs := len(prog.AllPackages)
- if want := 205; numPkgs < want {
- t.Errorf("Loaded only %d packages, want at least %d", numPkgs, want)
- }
-
- // Dump package members.
- if false {
- for pkg := range prog.AllPackages {
- fmt.Printf("Package %s:\n", pkg.Path())
- scope := pkg.Scope()
- qualifier := types.RelativeTo(pkg)
- for _, name := range scope.Names() {
- if ast.IsExported(name) {
- fmt.Printf("\t%s\n", types.ObjectString(scope.Lookup(name), qualifier))
- }
- }
- fmt.Println()
- }
- }
-
- // Check that Test functions for regexp and compress/bzip2 are
- // simultaneously present. The apparent cycle formed when augmenting
- // these packages by their tests (together with io/ioutil's test, which is now
- // an xtest) was the original motivation or reporting golang.org/issue/7114.
- //
- // compress/bzip2.TestBitReader in bzip2_test.go imports io/ioutil
- // io/ioutil.TestTempFile in tempfile_test.go imports regexp (no longer exists)
- // regexp.TestRE2Search in exec_test.go imports compress/bzip2
- for _, test := range []struct{ pkg, fn string }{
- {"regexp", "TestRE2Search"},
- {"compress/bzip2", "TestBitReader"},
- } {
- info := prog.Imported[test.pkg]
- if info == nil {
- t.Errorf("failed to load package %q", test.pkg)
- continue
- }
- obj, _ := info.Pkg.Scope().Lookup(test.fn).(*types.Func)
- if obj == nil {
- t.Errorf("package %q has no func %q", test.pkg, test.fn)
- continue
- }
- }
-
- // Dump some statistics.
-
- // determine line count
- var lineCount int
- prog.Fset.Iterate(func(f *token.File) bool {
- lineCount += f.LineCount()
- return true
- })
-
- t.Log("GOMAXPROCS: ", runtime.GOMAXPROCS(0))
- t.Log("#Source lines: ", lineCount)
- t.Log("Load/parse/typecheck: ", t1.Sub(t0))
- t.Log("#MB: ", int64(memstats.Alloc-alloc)/1000000)
-}
-
-func TestCgoOption(t *testing.T) {
- if testing.Short() {
- t.Skip("skipping in short mode; uses tons of memory (https://golang.org/issue/14113)")
- }
- 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
- }
- testenv.NeedsTool(t, "go")
-
- // Test that we can load cgo-using packages with
- // CGO_ENABLED=[01], which causes go/build 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, name, genericFile string
- }{
- {"net", "cgoLookupHost", "cgo_stub.go"},
- {"os/user", "current", "lookup_stubs.go"},
- } {
- ctxt := build.Default
- for _, ctxt.CgoEnabled = range []bool{false, true} {
- conf := loader.Config{Build: &ctxt}
- conf.Import(test.pkg)
- prog, err := conf.Load()
- if err != nil {
- t.Errorf("Load failed: %v", err)
- continue
- }
- info := prog.Imported[test.pkg]
- if info == nil {
- t.Errorf("package %s not found", test.pkg)
- continue
- }
- obj := info.Pkg.Scope().Lookup(test.name)
- if obj == nil {
- t.Errorf("no object %s.%s", test.pkg, test.name)
- continue
- }
- posn := prog.Fset.Position(obj.Pos())
- t.Logf("%s: %s (CgoEnabled=%t)", posn, obj, ctxt.CgoEnabled)
-
- gotFile := filepath.Base(posn.Filename)
- filesMatch := gotFile == test.genericFile
-
- if ctxt.CgoEnabled && filesMatch {
- t.Errorf("CGO_ENABLED=1: %s found in %s, want native file",
- obj, gotFile)
- } else if !ctxt.CgoEnabled && !filesMatch {
- t.Errorf("CGO_ENABLED=0: %s found in %s, want %s",
- obj, gotFile, test.genericFile)
- }
-
- // 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])
- ident := line[posn.Column-1:]
- if !strings.HasPrefix(ident, test.name) {
- t.Errorf("%s: %s not declared here (looking at %q)", posn, obj, ident)
- }
- }
- }
-}
projects / dotfiles / .git / blobdiff