--- /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.
+
+// No testdata on Android.
+
+// +build !android
+
+package loader_test
+
+import (
+ "fmt"
+ "go/build"
+ "go/constant"
+ "go/types"
+ "os"
+ "path/filepath"
+ "reflect"
+ "runtime"
+ "sort"
+ "strings"
+ "sync"
+ "testing"
+
+ "golang.org/x/tools/go/buildutil"
+ "golang.org/x/tools/go/loader"
+ "golang.org/x/tools/internal/testenv"
+)
+
+func TestMain(m *testing.M) {
+ testenv.ExitIfSmallMachine()
+ os.Exit(m.Run())
+}
+
+// TestFromArgs checks that conf.FromArgs populates conf correctly.
+// It does no I/O.
+func TestFromArgs(t *testing.T) {
+ type result struct {
+ Err string
+ Rest []string
+ ImportPkgs map[string]bool
+ CreatePkgs []loader.PkgSpec
+ }
+ for _, test := range []struct {
+ args []string
+ tests bool
+ want result
+ }{
+ // Mix of existing and non-existent packages.
+ {
+ args: []string{"nosuchpkg", "errors"},
+ want: result{
+ ImportPkgs: map[string]bool{"errors": false, "nosuchpkg": false},
+ },
+ },
+ // Same, with -test flag.
+ {
+ args: []string{"nosuchpkg", "errors"},
+ tests: true,
+ want: result{
+ ImportPkgs: map[string]bool{"errors": true, "nosuchpkg": true},
+ },
+ },
+ // Surplus arguments.
+ {
+ args: []string{"fmt", "errors", "--", "surplus"},
+ want: result{
+ Rest: []string{"surplus"},
+ ImportPkgs: map[string]bool{"errors": false, "fmt": false},
+ },
+ },
+ // Ad hoc package specified as *.go files.
+ {
+ args: []string{"foo.go", "bar.go"},
+ want: result{CreatePkgs: []loader.PkgSpec{{
+ Filenames: []string{"foo.go", "bar.go"},
+ }}},
+ },
+ // Mixture of *.go and import paths.
+ {
+ args: []string{"foo.go", "fmt"},
+ want: result{
+ Err: "named files must be .go files: fmt",
+ },
+ },
+ } {
+ var conf loader.Config
+ rest, err := conf.FromArgs(test.args, test.tests)
+ got := result{
+ Rest: rest,
+ ImportPkgs: conf.ImportPkgs,
+ CreatePkgs: conf.CreatePkgs,
+ }
+ if err != nil {
+ got.Err = err.Error()
+ }
+ if !reflect.DeepEqual(got, test.want) {
+ t.Errorf("FromArgs(%q) = %+v, want %+v", test.args, got, test.want)
+ }
+ }
+}
+
+func TestLoad_NoInitialPackages(t *testing.T) {
+ var conf loader.Config
+
+ const wantErr = "no initial packages were loaded"
+
+ prog, err := conf.Load()
+ if err == nil {
+ t.Errorf("Load succeeded unexpectedly, want %q", wantErr)
+ } else if err.Error() != wantErr {
+ t.Errorf("Load failed with wrong error %q, want %q", err, wantErr)
+ }
+ if prog != nil {
+ t.Errorf("Load unexpectedly returned a Program")
+ }
+}
+
+func TestLoad_MissingInitialPackage(t *testing.T) {
+ var conf loader.Config
+ conf.Import("nosuchpkg")
+ conf.Import("errors")
+
+ const wantErr = "couldn't load packages due to errors: nosuchpkg"
+
+ prog, err := conf.Load()
+ if err == nil {
+ t.Errorf("Load succeeded unexpectedly, want %q", wantErr)
+ } else if err.Error() != wantErr {
+ t.Errorf("Load failed with wrong error %q, want %q", err, wantErr)
+ }
+ if prog != nil {
+ t.Errorf("Load unexpectedly returned a Program")
+ }
+}
+
+func TestLoad_MissingInitialPackage_AllowErrors(t *testing.T) {
+ if runtime.Compiler == "gccgo" {
+ t.Skip("gccgo has no standard library test files")
+ }
+
+ var conf loader.Config
+ conf.AllowErrors = true
+ conf.Import("nosuchpkg")
+ conf.ImportWithTests("errors")
+
+ prog, err := conf.Load()
+ if err != nil {
+ t.Errorf("Load failed unexpectedly: %v", err)
+ }
+ if prog == nil {
+ t.Fatalf("Load returned a nil Program")
+ }
+ if got, want := created(prog), "errors_test"; got != want {
+ t.Errorf("Created = %s, want %s", got, want)
+ }
+ if got, want := imported(prog), "errors"; got != want {
+ t.Errorf("Imported = %s, want %s", got, want)
+ }
+}
+
+func TestCreateUnnamedPackage(t *testing.T) {
+ var conf loader.Config
+ conf.CreateFromFilenames("")
+ prog, err := conf.Load()
+ if err != nil {
+ t.Fatalf("Load failed: %v", err)
+ }
+ if got, want := fmt.Sprint(prog.InitialPackages()), "[(unnamed)]"; got != want {
+ t.Errorf("InitialPackages = %s, want %s", got, want)
+ }
+}
+
+func TestLoad_MissingFileInCreatedPackage(t *testing.T) {
+ var conf loader.Config
+ conf.CreateFromFilenames("", "missing.go")
+
+ const wantErr = "couldn't load packages due to errors: (unnamed)"
+
+ prog, err := conf.Load()
+ if prog != nil {
+ t.Errorf("Load unexpectedly returned a Program")
+ }
+ if err == nil {
+ t.Fatalf("Load succeeded unexpectedly, want %q", wantErr)
+ }
+ if err.Error() != wantErr {
+ t.Fatalf("Load failed with wrong error %q, want %q", err, wantErr)
+ }
+}
+
+func TestLoad_MissingFileInCreatedPackage_AllowErrors(t *testing.T) {
+ conf := loader.Config{AllowErrors: true}
+ conf.CreateFromFilenames("", "missing.go")
+
+ prog, err := conf.Load()
+ if err != nil {
+ t.Errorf("Load failed: %v", err)
+ }
+ if got, want := fmt.Sprint(prog.InitialPackages()), "[(unnamed)]"; got != want {
+ t.Fatalf("InitialPackages = %s, want %s", got, want)
+ }
+}
+
+func TestLoad_ParseError(t *testing.T) {
+ var conf loader.Config
+ conf.CreateFromFilenames("badpkg", "testdata/badpkgdecl.go")
+
+ const wantErr = "couldn't load packages due to errors: badpkg"
+
+ prog, err := conf.Load()
+ if prog != nil {
+ t.Errorf("Load unexpectedly returned a Program")
+ }
+ if err == nil {
+ t.Fatalf("Load succeeded unexpectedly, want %q", wantErr)
+ }
+ if err.Error() != wantErr {
+ t.Fatalf("Load failed with wrong error %q, want %q", err, wantErr)
+ }
+}
+
+func TestLoad_ParseError_AllowErrors(t *testing.T) {
+ var conf loader.Config
+ conf.AllowErrors = true
+ conf.CreateFromFilenames("badpkg", "testdata/badpkgdecl.go")
+
+ prog, err := conf.Load()
+ if err != nil {
+ t.Errorf("Load failed unexpectedly: %v", err)
+ }
+ if prog == nil {
+ t.Fatalf("Load returned a nil Program")
+ }
+ if got, want := created(prog), "badpkg"; got != want {
+ t.Errorf("Created = %s, want %s", got, want)
+ }
+
+ badpkg := prog.Created[0]
+ if len(badpkg.Files) != 1 {
+ t.Errorf("badpkg has %d files, want 1", len(badpkg.Files))
+ }
+ wantErr := filepath.Join("testdata", "badpkgdecl.go") + ":1:34: expected 'package', found 'EOF'"
+ if !hasError(badpkg.Errors, wantErr) {
+ t.Errorf("badpkg.Errors = %v, want %s", badpkg.Errors, wantErr)
+ }
+}
+
+func TestLoad_FromSource_Success(t *testing.T) {
+ var conf loader.Config
+ conf.CreateFromFilenames("P", "testdata/a.go", "testdata/b.go")
+
+ prog, err := conf.Load()
+ if err != nil {
+ t.Errorf("Load failed unexpectedly: %v", err)
+ }
+ if prog == nil {
+ t.Fatalf("Load returned a nil Program")
+ }
+ if got, want := created(prog), "P"; got != want {
+ t.Errorf("Created = %s, want %s", got, want)
+ }
+}
+
+func TestLoad_FromImports_Success(t *testing.T) {
+ if runtime.Compiler == "gccgo" {
+ t.Skip("gccgo has no standard library test files")
+ }
+
+ var conf loader.Config
+ conf.ImportWithTests("fmt")
+ conf.ImportWithTests("errors")
+
+ prog, err := conf.Load()
+ if err != nil {
+ t.Errorf("Load failed unexpectedly: %v", err)
+ }
+ if prog == nil {
+ t.Fatalf("Load returned a nil Program")
+ }
+ if got, want := created(prog), "errors_test fmt_test"; got != want {
+ t.Errorf("Created = %q, want %s", got, want)
+ }
+ if got, want := imported(prog), "errors fmt"; got != want {
+ t.Errorf("Imported = %s, want %s", got, want)
+ }
+ // Check set of transitive packages.
+ // There are >30 and the set may grow over time, so only check a few.
+ want := map[string]bool{
+ "strings": true,
+ "time": true,
+ "runtime": true,
+ "testing": true,
+ "unicode": true,
+ }
+ for _, path := range all(prog) {
+ delete(want, path)
+ }
+ if len(want) > 0 {
+ t.Errorf("AllPackages is missing these keys: %q", keys(want))
+ }
+}
+
+func TestLoad_MissingIndirectImport(t *testing.T) {
+ pkgs := map[string]string{
+ "a": `package a; import _ "b"`,
+ "b": `package b; import _ "c"`,
+ }
+ conf := loader.Config{Build: fakeContext(pkgs)}
+ conf.Import("a")
+
+ const wantErr = "couldn't load packages due to errors: b"
+
+ prog, err := conf.Load()
+ if err == nil {
+ t.Errorf("Load succeeded unexpectedly, want %q", wantErr)
+ } else if err.Error() != wantErr {
+ t.Errorf("Load failed with wrong error %q, want %q", err, wantErr)
+ }
+ if prog != nil {
+ t.Errorf("Load unexpectedly returned a Program")
+ }
+}
+
+func TestLoad_BadDependency_AllowErrors(t *testing.T) {
+ for _, test := range []struct {
+ descr string
+ pkgs map[string]string
+ wantPkgs string
+ }{
+
+ {
+ descr: "missing dependency",
+ pkgs: map[string]string{
+ "a": `package a; import _ "b"`,
+ "b": `package b; import _ "c"`,
+ },
+ wantPkgs: "a b",
+ },
+ {
+ descr: "bad package decl in dependency",
+ pkgs: map[string]string{
+ "a": `package a; import _ "b"`,
+ "b": `package b; import _ "c"`,
+ "c": `package`,
+ },
+ wantPkgs: "a b",
+ },
+ {
+ descr: "parse error in dependency",
+ pkgs: map[string]string{
+ "a": `package a; import _ "b"`,
+ "b": `package b; import _ "c"`,
+ "c": `package c; var x = `,
+ },
+ wantPkgs: "a b c",
+ },
+ } {
+ conf := loader.Config{
+ AllowErrors: true,
+ Build: fakeContext(test.pkgs),
+ }
+ conf.Import("a")
+
+ prog, err := conf.Load()
+ if err != nil {
+ t.Errorf("%s: Load failed unexpectedly: %v", test.descr, err)
+ }
+ if prog == nil {
+ t.Fatalf("%s: Load returned a nil Program", test.descr)
+ }
+
+ if got, want := imported(prog), "a"; got != want {
+ t.Errorf("%s: Imported = %s, want %s", test.descr, got, want)
+ }
+ if got := all(prog); strings.Join(got, " ") != test.wantPkgs {
+ t.Errorf("%s: AllPackages = %s, want %s", test.descr, got, test.wantPkgs)
+ }
+ }
+}
+
+func TestCwd(t *testing.T) {
+ ctxt := fakeContext(map[string]string{"one/two/three": `package three`})
+ for _, test := range []struct {
+ cwd, arg, want string
+ }{
+ {cwd: "/go/src/one", arg: "./two/three", want: "one/two/three"},
+ {cwd: "/go/src/one", arg: "../one/two/three", want: "one/two/three"},
+ {cwd: "/go/src/one", arg: "one/two/three", want: "one/two/three"},
+ {cwd: "/go/src/one/two/three", arg: ".", want: "one/two/three"},
+ {cwd: "/go/src/one", arg: "two/three", want: ""},
+ } {
+ conf := loader.Config{
+ Cwd: test.cwd,
+ Build: ctxt,
+ }
+ conf.Import(test.arg)
+
+ var got string
+ prog, err := conf.Load()
+ if prog != nil {
+ got = imported(prog)
+ }
+ if got != test.want {
+ t.Errorf("Load(%s) from %s: Imported = %s, want %s",
+ test.arg, test.cwd, got, test.want)
+ if err != nil {
+ t.Errorf("Load failed: %v", err)
+ }
+ }
+ }
+}
+
+func TestLoad_vendor(t *testing.T) {
+ pkgs := map[string]string{
+ "a": `package a; import _ "x"`,
+ "a/vendor": ``, // mkdir a/vendor
+ "a/vendor/x": `package xa`,
+ "b": `package b; import _ "x"`,
+ "b/vendor": ``, // mkdir b/vendor
+ "b/vendor/x": `package xb`,
+ "c": `package c; import _ "x"`,
+ "x": `package xc`,
+ }
+ conf := loader.Config{Build: fakeContext(pkgs)}
+ conf.Import("a")
+ conf.Import("b")
+ conf.Import("c")
+
+ prog, err := conf.Load()
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ // Check that a, b, and c see different versions of x.
+ for _, r := range "abc" {
+ name := string(r)
+ got := prog.Package(name).Pkg.Imports()[0]
+ want := "x" + name
+ if got.Name() != want {
+ t.Errorf("package %s import %q = %s, want %s",
+ name, "x", got.Name(), want)
+ }
+ }
+}
+
+func TestVendorCwd(t *testing.T) {
+ // Test the interaction of cwd and vendor directories.
+ ctxt := fakeContext(map[string]string{
+ "net": ``, // mkdir net
+ "net/http": `package http; import _ "hpack"`,
+ "vendor": ``, // mkdir vendor
+ "vendor/hpack": `package vendorhpack`,
+ "hpack": `package hpack`,
+ })
+ for i, test := range []struct {
+ cwd, arg, want string
+ }{
+ {cwd: "/go/src/net", arg: "http"}, // not found
+ {cwd: "/go/src/net", arg: "./http", want: "net/http vendor/hpack"},
+ {cwd: "/go/src/net", arg: "hpack", want: "vendor/hpack"},
+ {cwd: "/go/src/vendor", arg: "hpack", want: "vendor/hpack"},
+ {cwd: "/go/src/vendor", arg: "./hpack", want: "vendor/hpack"},
+ } {
+ conf := loader.Config{
+ Cwd: test.cwd,
+ Build: ctxt,
+ }
+ conf.Import(test.arg)
+
+ var got string
+ prog, err := conf.Load()
+ if prog != nil {
+ got = strings.Join(all(prog), " ")
+ }
+ if got != test.want {
+ t.Errorf("#%d: Load(%s) from %s: got %s, want %s",
+ i, test.arg, test.cwd, got, test.want)
+ if err != nil {
+ t.Errorf("Load failed: %v", err)
+ }
+ }
+ }
+}
+
+func TestVendorCwdIssue16580(t *testing.T) {
+ // Regression test for Go issue 16580.
+ // Import decls in "created" packages were vendor-resolved
+ // w.r.t. cwd, not the parent directory of the package's files.
+ ctxt := fakeContext(map[string]string{
+ "a": ``, // mkdir a
+ "a/vendor": ``, // mkdir a/vendor
+ "a/vendor/b": `package b; const X = true`,
+ "b": `package b; const X = false`,
+ })
+ for _, test := range []struct {
+ filename, cwd string
+ want bool // expected value of b.X; depends on filename, not on cwd
+ }{
+ {filename: "c.go", cwd: "/go/src", want: false},
+ {filename: "c.go", cwd: "/go/src/a", want: false},
+ {filename: "c.go", cwd: "/go/src/a/b", want: false},
+ {filename: "c.go", cwd: "/go/src/a/vendor/b", want: false},
+
+ {filename: "/go/src/a/c.go", cwd: "/go/src", want: true},
+ {filename: "/go/src/a/c.go", cwd: "/go/src/a", want: true},
+ {filename: "/go/src/a/c.go", cwd: "/go/src/a/b", want: true},
+ {filename: "/go/src/a/c.go", cwd: "/go/src/a/vendor/b", want: true},
+
+ {filename: "/go/src/c/c.go", cwd: "/go/src", want: false},
+ {filename: "/go/src/c/c.go", cwd: "/go/src/a", want: false},
+ {filename: "/go/src/c/c.go", cwd: "/go/src/a/b", want: false},
+ {filename: "/go/src/c/c.go", cwd: "/go/src/a/vendor/b", want: false},
+ } {
+ conf := loader.Config{
+ Cwd: test.cwd,
+ Build: ctxt,
+ }
+ f, err := conf.ParseFile(test.filename, `package dummy; import "b"; const X = b.X`)
+ if err != nil {
+ t.Fatal(f)
+ }
+ conf.CreateFromFiles("dummy", f)
+
+ prog, err := conf.Load()
+ if err != nil {
+ t.Errorf("%+v: Load failed: %v", test, err)
+ continue
+ }
+
+ x := constant.BoolVal(prog.Created[0].Pkg.Scope().Lookup("X").(*types.Const).Val())
+ if x != test.want {
+ t.Errorf("%+v: b.X = %t", test, x)
+ }
+ }
+
+ // TODO(adonovan): also test imports within XTestGoFiles.
+}
+
+// TODO(adonovan): more Load tests:
+//
+// failures:
+// - to parse package decl of *_test.go files
+// - to parse package decl of external *_test.go files
+// - to parse whole of *_test.go files
+// - to parse whole of external *_test.go files
+// - to open a *.go file during import scanning
+// - to import from binary
+
+// features:
+// - InitialPackages
+// - PackageCreated hook
+// - TypeCheckFuncBodies hook
+
+func TestTransitivelyErrorFreeFlag(t *testing.T) {
+ // Create an minimal custom build.Context
+ // that fakes the following packages:
+ //
+ // a --> b --> c! c has an error
+ // \ d and e are transitively error-free.
+ // e --> d
+ //
+ // Each package [a-e] consists of one file, x.go.
+ pkgs := map[string]string{
+ "a": `package a; import (_ "b"; _ "e")`,
+ "b": `package b; import _ "c"`,
+ "c": `package c; func f() { _ = int(false) }`, // type error within function body
+ "d": `package d;`,
+ "e": `package e; import _ "d"`,
+ }
+ conf := loader.Config{
+ AllowErrors: true,
+ Build: fakeContext(pkgs),
+ }
+ conf.Import("a")
+
+ prog, err := conf.Load()
+ if err != nil {
+ t.Errorf("Load failed: %s", err)
+ }
+ if prog == nil {
+ t.Fatalf("Load returned nil *Program")
+ }
+
+ for pkg, info := range prog.AllPackages {
+ var wantErr, wantTEF bool
+ switch pkg.Path() {
+ case "a", "b":
+ case "c":
+ wantErr = true
+ case "d", "e":
+ wantTEF = true
+ default:
+ t.Errorf("unexpected package: %q", pkg.Path())
+ continue
+ }
+
+ if (info.Errors != nil) != wantErr {
+ if wantErr {
+ t.Errorf("Package %q.Error = nil, want error", pkg.Path())
+ } else {
+ t.Errorf("Package %q has unexpected Errors: %v",
+ pkg.Path(), info.Errors)
+ }
+ }
+
+ if info.TransitivelyErrorFree != wantTEF {
+ t.Errorf("Package %q.TransitivelyErrorFree=%t, want %t",
+ pkg.Path(), info.TransitivelyErrorFree, wantTEF)
+ }
+ }
+}
+
+// Test that syntax (scan/parse), type, and loader errors are recorded
+// (in PackageInfo.Errors) and reported (via Config.TypeChecker.Error).
+func TestErrorReporting(t *testing.T) {
+ pkgs := map[string]string{
+ "a": `package a; import (_ "b"; _ "c"); var x int = false`,
+ "b": `package b; 'syntax error!`,
+ }
+ conf := loader.Config{
+ AllowErrors: true,
+ Build: fakeContext(pkgs),
+ }
+ var mu sync.Mutex
+ var allErrors []error
+ conf.TypeChecker.Error = func(err error) {
+ mu.Lock()
+ allErrors = append(allErrors, err)
+ mu.Unlock()
+ }
+ conf.Import("a")
+
+ prog, err := conf.Load()
+ if err != nil {
+ t.Errorf("Load failed: %s", err)
+ }
+ if prog == nil {
+ t.Fatalf("Load returned nil *Program")
+ }
+
+ // TODO(adonovan): test keys of ImportMap.
+
+ // Check errors recorded in each PackageInfo.
+ for pkg, info := range prog.AllPackages {
+ switch pkg.Path() {
+ case "a":
+ // The match below is unfortunately vague, because in go1.16 the error
+ // message in go/types changed from "cannot convert ..." to "cannot use
+ // ... as ... in assignment".
+ if !hasError(info.Errors, "cannot") {
+ t.Errorf("a.Errors = %v, want bool assignment (type) error", info.Errors)
+ }
+ if !hasError(info.Errors, "could not import c") {
+ t.Errorf("a.Errors = %v, want import (loader) error", info.Errors)
+ }
+ case "b":
+ if !hasError(info.Errors, "rune literal not terminated") {
+ t.Errorf("b.Errors = %v, want unterminated literal (syntax) error", info.Errors)
+ }
+ }
+ }
+
+ // Check errors reported via error handler.
+ if !hasError(allErrors, "cannot") ||
+ !hasError(allErrors, "rune literal not terminated") ||
+ !hasError(allErrors, "could not import c") {
+ t.Errorf("allErrors = %v, want syntax, type and loader errors", allErrors)
+ }
+}
+
+func TestCycles(t *testing.T) {
+ for _, test := range []struct {
+ descr string
+ ctxt *build.Context
+ wantErr string
+ }{
+ {
+ "self-cycle",
+ fakeContext(map[string]string{
+ "main": `package main; import _ "selfcycle"`,
+ "selfcycle": `package selfcycle; import _ "selfcycle"`,
+ }),
+ `import cycle: selfcycle -> selfcycle`,
+ },
+ {
+ "three-package cycle",
+ fakeContext(map[string]string{
+ "main": `package main; import _ "a"`,
+ "a": `package a; import _ "b"`,
+ "b": `package b; import _ "c"`,
+ "c": `package c; import _ "a"`,
+ }),
+ `import cycle: c -> a -> b -> c`,
+ },
+ {
+ "self-cycle in dependency of test file",
+ buildutil.FakeContext(map[string]map[string]string{
+ "main": {
+ "main.go": `package main`,
+ "main_test.go": `package main; import _ "a"`,
+ },
+ "a": {
+ "a.go": `package a; import _ "a"`,
+ },
+ }),
+ `import cycle: a -> a`,
+ },
+ // TODO(adonovan): fix: these fail
+ // {
+ // "two-package cycle in dependency of test file",
+ // buildutil.FakeContext(map[string]map[string]string{
+ // "main": {
+ // "main.go": `package main`,
+ // "main_test.go": `package main; import _ "a"`,
+ // },
+ // "a": {
+ // "a.go": `package a; import _ "main"`,
+ // },
+ // }),
+ // `import cycle: main -> a -> main`,
+ // },
+ // {
+ // "self-cycle in augmented package",
+ // buildutil.FakeContext(map[string]map[string]string{
+ // "main": {
+ // "main.go": `package main`,
+ // "main_test.go": `package main; import _ "main"`,
+ // },
+ // }),
+ // `import cycle: main -> main`,
+ // },
+ } {
+ conf := loader.Config{
+ AllowErrors: true,
+ Build: test.ctxt,
+ }
+ var mu sync.Mutex
+ var allErrors []error
+ conf.TypeChecker.Error = func(err error) {
+ mu.Lock()
+ allErrors = append(allErrors, err)
+ mu.Unlock()
+ }
+ conf.ImportWithTests("main")
+
+ prog, err := conf.Load()
+ if err != nil {
+ t.Errorf("%s: Load failed: %s", test.descr, err)
+ }
+ if prog == nil {
+ t.Fatalf("%s: Load returned nil *Program", test.descr)
+ }
+
+ if !hasError(allErrors, test.wantErr) {
+ t.Errorf("%s: Load() errors = %q, want %q",
+ test.descr, allErrors, test.wantErr)
+ }
+ }
+
+ // TODO(adonovan):
+ // - Test that in a legal test cycle, none of the symbols
+ // defined by augmentation are visible via import.
+}
+
+// ---- utilities ----
+
+// Simplifying wrapper around buildutil.FakeContext for single-file packages.
+func fakeContext(pkgs map[string]string) *build.Context {
+ pkgs2 := make(map[string]map[string]string)
+ for path, content := range pkgs {
+ pkgs2[path] = map[string]string{"x.go": content}
+ }
+ return buildutil.FakeContext(pkgs2)
+}
+
+func hasError(errors []error, substr string) bool {
+ for _, err := range errors {
+ if strings.Contains(err.Error(), substr) {
+ return true
+ }
+ }
+ return false
+}
+
+func keys(m map[string]bool) (keys []string) {
+ for key := range m {
+ keys = append(keys, key)
+ }
+ sort.Strings(keys)
+ return
+}
+
+// Returns all loaded packages.
+func all(prog *loader.Program) []string {
+ var pkgs []string
+ for _, info := range prog.AllPackages {
+ pkgs = append(pkgs, info.Pkg.Path())
+ }
+ sort.Strings(pkgs)
+ return pkgs
+}
+
+// Returns initially imported packages, as a string.
+func imported(prog *loader.Program) string {
+ var pkgs []string
+ for _, info := range prog.Imported {
+ pkgs = append(pkgs, info.Pkg.Path())
+ }
+ sort.Strings(pkgs)
+ return strings.Join(pkgs, " ")
+}
+
+// Returns initially created packages, as a string.
+func created(prog *loader.Program) string {
+ var pkgs []string
+ for _, info := range prog.Created {
+ pkgs = append(pkgs, info.Pkg.Path())
+ }
+ return strings.Join(pkgs, " ")
+}
+
+// Load package "io" twice in parallel.
+// When run with -race, this is a regression test for Go issue 20718, in
+// which the global "unsafe" package was modified concurrently.
+func TestLoad1(t *testing.T) { loadIO(t) }
+func TestLoad2(t *testing.T) { loadIO(t) }
+
+func loadIO(t *testing.T) {
+ t.Parallel()
+ conf := &loader.Config{ImportPkgs: map[string]bool{"io": false}}
+ if _, err := conf.Load(); err != nil {
+ t.Fatal(err)
+ }
+}
projects / dotfiles / .git / blobdiff