Add files using upload-large-folder tool

go/src/cmd/go/testdata/addmod.go

@@ -0,0 +1,154 @@
+// 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.
+
+//go:build ignore
+// +build ignore
+
+// Addmod adds a module as a txtar archive to the testdata/mod directory.
+//
+// Usage:
+//
+//	go run addmod.go path@version...
+//
+// It should only be used for very small modules - we do not want to check
+// very large files into testdata/mod.
+//
+// It is acceptable to edit the archive afterward to remove or shorten files.
+// See mod/README for more information.
+package main
+
+import (
+	"bytes"
+	"cmd/go/internal/str"
+	"flag"
+	"fmt"
+	"internal/txtar"
+	"io/fs"
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+)
+
+func usage() {
+	fmt.Fprintf(os.Stderr, "usage: go run addmod.go path@version...\n")
+	os.Exit(2)
+}
+
+var tmpdir string
+
+func fatalf(format string, args ...any) {
+	os.RemoveAll(tmpdir)
+	log.Fatalf(format, args...)
+}
+
+const goCmd = "go"
+
+func main() {
+	flag.Usage = usage
+	flag.Parse()
+	if flag.NArg() == 0 {
+		usage()
+	}
+
+	log.SetPrefix("addmod: ")
+	log.SetFlags(0)
+
+	var err error
+	tmpdir, err = os.MkdirTemp("", "addmod-")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	run := func(command string, args ...string) string {
+		cmd := exec.Command(command, args...)
+		cmd.Dir = tmpdir
+		var stderr bytes.Buffer
+		cmd.Stderr = &stderr
+		out, err := cmd.Output()
+		if err != nil {
+			fatalf("%s %s: %v\n%s", command, strings.Join(args, " "), err, stderr.Bytes())
+		}
+		return string(out)
+	}
+
+	gopath := strings.TrimSpace(run("go", "env", "GOPATH"))
+	if gopath == "" {
+		fatalf("cannot find GOPATH")
+	}
+
+	exitCode := 0
+	for _, arg := range flag.Args() {
+		if err := os.WriteFile(filepath.Join(tmpdir, "go.mod"), []byte("module m\n"), 0666); err != nil {
+			fatalf("%v", err)
+		}
+		run(goCmd, "get", "-d", arg)
+		path := arg
+		if i := strings.Index(path, "@"); i >= 0 {
+			path = path[:i]
+		}
+		out := run(goCmd, "list", "-m", "-f={{.Path}} {{.Version}} {{.Dir}}", path)
+		f := strings.Fields(out)
+		if len(f) != 3 {
+			log.Printf("go list -m %s: unexpected output %q", arg, out)
+			exitCode = 1
+			continue
+		}
+		path, vers, dir := f[0], f[1], f[2]
+		mod, err := os.ReadFile(filepath.Join(gopath, "pkg/mod/cache/download", path, "@v", vers+".mod"))
+		if err != nil {
+			log.Printf("%s: %v", arg, err)
+			exitCode = 1
+			continue
+		}
+		info, err := os.ReadFile(filepath.Join(gopath, "pkg/mod/cache/download", path, "@v", vers+".info"))
+		if err != nil {
+			log.Printf("%s: %v", arg, err)
+			exitCode = 1
+			continue
+		}
+
+		a := new(txtar.Archive)
+		title := arg
+		if !strings.Contains(arg, "@") {
+			title += "@" + vers
+		}
+		a.Comment = []byte(fmt.Sprintf("module %s\n\n", title))
+		a.Files = []txtar.File{
+			{Name: ".mod", Data: mod},
+			{Name: ".info", Data: info},
+		}
+		dir = filepath.Clean(dir)
+		err = filepath.WalkDir(dir, func(path string, info fs.DirEntry, err error) error {
+			if !info.Type().IsRegular() {
+				return nil
+			}
+			name := info.Name()
+			if name == "go.mod" || strings.HasSuffix(name, ".go") {
+				data, err := os.ReadFile(path)
+				if err != nil {
+					return err
+				}
+				a.Files = append(a.Files, txtar.File{Name: str.TrimFilePathPrefix(path, dir), Data: data})
+			}
+			return nil
+		})
+		if err != nil {
+			log.Printf("%s: %v", arg, err)
+			exitCode = 1
+			continue
+		}
+
+		data := txtar.Format(a)
+		target := filepath.Join("mod", strings.ReplaceAll(path, "/", "_")+"_"+vers+".txt")
+		if err := os.WriteFile(target, data, 0666); err != nil {
+			log.Printf("%s: %v", arg, err)
+			exitCode = 1
+			continue
+		}
+	}
+	os.RemoveAll(tmpdir)
+	os.Exit(exitCode)
+}

go/src/cmd/go/testdata/mod/README

@@ -0,0 +1,36 @@
+This directory holds Go modules served by a Go module proxy
+that runs on localhost during tests, both to make tests avoid
+requiring specific network servers and also to make them 
+significantly faster.
+
+A small go get'able test module can be added here by running
+
+	cd cmd/go/testdata
+	go run addmod.go path@vers
+
+where path and vers are the module path and version to add here.
+
+For interactive experimentation using this set of modules, run:
+
+	cd cmd/go
+	go test -proxy=localhost:1234 &
+	export GOPROXY=http://localhost:1234/mod
+
+and then run go commands as usual.
+
+Modules saved to this directory should be small: a few kilobytes at most.
+It is acceptable to edit the archives created by addmod.go to remove
+or shorten files. It is also acceptable to write module archives by hand: 
+they need not be backed by some public git repo.
+
+Each module archive is named path_vers.txt, where slashes in path
+have been replaced with underscores. The archive must contain
+two files ".info" and ".mod", to be served as the info and mod files
+in the proxy protocol (see https://research.swtch.com/vgo-module).
+The remaining files are served as the content of the module zip file.
+The path@vers prefix required of files in the zip file is added
+automatically by the proxy: the files in the archive have names without
+the prefix, like plain "go.mod", "x.go", and so on.
+
+See ../addmod.go and ../savedir.go for tools to generate txtar files,
+although again it is also fine to write them by hand.

go/src/cmd/go/testdata/mod/example.com_ambiguous_a_b_v0.0.0-empty.txt

@@ -0,0 +1,12 @@
+Module example.com/ambiguous/a/b is a suffix of example.com/a.
+This version contains no package.
+-- .mod --
+module example.com/ambiguous/a/b
+
+go 1.16
+-- .info --
+{"Version":"v0.0.0-empty"}
+-- go.mod --
+module example.com/ambiguous/a/b
+
+go 1.16

go/src/cmd/go/testdata/mod/example.com_ambiguous_a_v1.0.0.txt

@@ -0,0 +1,18 @@
+Module example.com/ambiguous/a is a prefix of example.com/a/b.
+It contains package example.com/a/b.
+-- .mod --
+module example.com/ambiguous/a
+
+go 1.16
+
+require example.com/ambiguous/a/b v0.0.0-empty
+-- .info --
+{"Version":"v1.0.0"}
+-- go.mod --
+module example.com/ambiguous/a
+
+go 1.16
+
+require example.com/ambiguous/a/b v0.0.0-empty
+-- b/b.go --
+package b

go/src/cmd/go/testdata/mod/example.com_badchain_a_v1.0.0.txt

@@ -0,0 +1,12 @@
+example.com/badchain/a v1.0.0
+
+-- .mod --
+module example.com/badchain/a
+
+require example.com/badchain/b v1.0.0
+-- .info --
+{"Version":"v1.0.0"}
+-- a.go --
+package a
+
+import _ "example.com/badchain/b"

go/src/cmd/go/testdata/mod/example.com_badchain_a_v1.1.0.txt

@@ -0,0 +1,12 @@
+example.com/badchain/a v1.1.0
+
+-- .mod --
+module example.com/badchain/a
+
+require example.com/badchain/b v1.1.0
+-- .info --
+{"Version":"v1.1.0"}
+-- a.go --
+package a
+
+import _ "example.com/badchain/b"

go/src/cmd/go/testdata/mod/example.com_badchain_b_v1.0.0.txt

@@ -0,0 +1,12 @@
+example.com/badchain/b v1.0.0
+
+-- .mod --
+module example.com/badchain/b
+
+require example.com/badchain/c v1.0.0
+-- .info --
+{"Version":"v1.0.0"}
+-- b.go --
+package b
+
+import _ "example.com/badchain/c"

go/src/cmd/go/testdata/mod/example.com_badchain_b_v1.1.0.txt

@@ -0,0 +1,12 @@
+example.com/badchain/b v1.1.0
+
+-- .mod --
+module example.com/badchain/b
+
+require example.com/badchain/c v1.1.0
+-- .info --
+{"Version":"v1.1.0"}
+-- b.go --
+package b
+
+import _ "example.com/badchain/c"

go/src/cmd/go/testdata/mod/example.com_badchain_c_v1.0.0.txt

@@ -0,0 +1,8 @@
+example.com/badchain/c v1.0.0
+
+-- .mod --
+module example.com/badchain/c
+-- .info --
+{"Version":"v1.0.0"}
+-- c.go --
+package c

go/src/cmd/go/testdata/mod/example.com_badchain_c_v1.1.0.txt

@@ -0,0 +1,8 @@
+example.com/badchain/c v1.1.0
+
+-- .mod --
+module badchain.example.com/c
+-- .info --
+{"Version":"v1.1.0"}
+-- c.go --
+package c

go/src/cmd/go/testdata/mod/example.com_cmd_v1.0.0-exclude.txt

@@ -0,0 +1,28 @@
+example.com/cmd contains main packages.
+
+-- .info --
+{"Version":"v1.0.0-exclude"}
+-- .mod --
+module example.com/cmd
+
+go 1.16
+
+exclude rsc.io/quote v1.5.2
+-- go.mod --
+module example.com/cmd
+
+go 1.16
+
+exclude rsc.io/quote v1.5.2
+-- a/a.go --
+package main
+
+func main() {}
+-- b/b.go --
+package main
+
+func main() {}
+-- err/err.go --
+package err
+
+var X = DoesNotCompile

go/src/cmd/go/testdata/mod/example.com_cmd_v1.0.0-newerself.txt

@@ -0,0 +1,28 @@
+example.com/cmd contains main packages.
+
+-- .info --
+{"Version":"v1.0.0-newerself"}
+-- .mod --
+module example.com/cmd
+
+go 1.16
+
+require example.com/cmd v1.0.0
+-- go.mod --
+module example.com/cmd
+
+go 1.16
+
+require example.com/cmd v1.0.0
+-- a/a.go --
+package main
+
+func main() {}
+-- b/b.go --
+package main
+
+func main() {}
+-- err/err.go --
+package err
+
+var X = DoesNotCompile

go/src/cmd/go/testdata/mod/example.com_cmd_v1.0.0-replace.txt

@@ -0,0 +1,28 @@
+example.com/cmd contains main packages.
+
+-- .info --
+{"Version":"v1.0.0-replace"}
+-- .mod --
+module example.com/cmd
+
+go 1.16
+
+replace rsc.io/quote => rsc.io/quote v1.5.2
+-- go.mod --
+module example.com/cmd
+
+go 1.16
+
+replace rsc.io/quote => rsc.io/quote v1.5.2
+-- a/a.go --
+package main
+
+func main() {}
+-- b/b.go --
+package main
+
+func main() {}
+-- err/err.go --
+package err
+
+var X = DoesNotCompile

go/src/cmd/go/testdata/mod/example.com_cmd_v1.0.0.txt

@@ -0,0 +1,31 @@
+example.com/cmd contains main packages.
+
+v1.0.0 is the latest non-retracted version. Other versions contain errors or
+detectable problems.
+
+-- .info --
+{"Version":"v1.0.0"}
+-- .mod --
+module example.com/cmd
+
+go 1.16
+-- go.mod --
+module example.com/cmd
+
+go 1.16
+-- a/a.go --
+package main
+
+import "fmt"
+
+func main() { fmt.Println("a@v1.0.0") }
+-- b/b.go --
+package main
+
+import "fmt"
+
+func main() { fmt.Println("b@v1.0.0") }
+-- err/err.go --
+package err
+
+var X = DoesNotCompile

go/src/cmd/go/testdata/mod/example.com_cmd_v1.9.0.txt

@@ -0,0 +1,30 @@
+example.com/cmd contains main packages.
+
+-- .info --
+{"Version":"v1.9.0"}
+-- .mod --
+module example.com/cmd
+
+go 1.16
+
+// this is a bad version
+retract v1.9.0
+-- go.mod --
+module example.com/cmd
+
+go 1.16
+
+// this is a bad version
+retract v1.9.0
+-- a/a.go --
+package main
+
+func main() {}
+-- b/b.go --
+package main
+
+func main() {}
+-- err/err.go --
+package err
+
+var X = DoesNotCompile

go/src/cmd/go/testdata/mod/example.com_depends_on_generics_v1.0.0.txt

@@ -0,0 +1,23 @@
+example.com/depends/on/generics v1.0.0
+written by hand
+
+-- .mod --
+module example.com/depends/on/generics
+
+go 1.18
+
+require example.com/generics v1.0.0
+-- .info --
+{"Version":"v1.0.0"}
+-- go.mod --
+module example.com/depends/on/generics
+
+go 1.18
+
+require example.com/generics v1.0.0
+-- main.go --
+package main
+
+import "example.com/generics"
+
+func main() {generics.Bar()}

go/src/cmd/go/testdata/mod/example.com_deprecated_a_v1.0.0.txt

@@ -0,0 +1,19 @@
+-- .info --
+{"Version":"v1.0.0"}
+-- .mod --
+module example.com/deprecated/a
+
+go 1.17
+-- go.mod --
+module example.com/deprecated/a
+
+go 1.17
+-- a.go --
+package a
+
+-- cmd/a/a.go --
+package main
+
+import "fmt"
+
+func main() { fmt.Println("a@v1.0.0") }

go/src/cmd/go/testdata/mod/example.com_deprecated_a_v1.9.0.txt

@@ -0,0 +1,21 @@
+-- .info --
+{"Version":"v1.9.0"}
+-- .mod --
+// Deprecated: in example.com/deprecated/a@v1.9.0
+module example.com/deprecated/a
+
+go 1.17
+-- go.mod --
+// Deprecated: in example.com/deprecated/a@v1.9.0
+module example.com/deprecated/a
+
+go 1.17
+-- a.go --
+package a
+
+-- cmd/a/a.go --
+package main
+
+import "fmt"
+
+func main() { fmt.Println("a@v1.9.0") }

go/src/cmd/go/testdata/mod/example.com_deprecated_b_v1.0.0.txt

@@ -0,0 +1,12 @@
+-- .info --
+{"Version":"v1.0.0"}
+-- .mod --
+module example.com/deprecated/b
+
+go 1.17
+-- go.mod --
+module example.com/deprecated/b
+
+go 1.17
+-- b.go --
+package b

go/src/cmd/go/testdata/mod/example.com_deprecated_b_v1.9.0.txt

@@ -0,0 +1,14 @@
+-- .info --
+{"Version":"v1.9.0"}
+-- .mod --
+// Deprecated: in example.com/deprecated/b@v1.9.0
+module example.com/deprecated/b
+
+go 1.17
+-- go.mod --
+// Deprecated: in example.com/deprecated/b@v1.9.0
+module example.com/deprecated/b
+
+go 1.17
+-- b.go --
+package b

go/src/cmd/go/testdata/mod/example.com_dotgo.go_v1.0.0.txt

@@ -0,0 +1,16 @@
+This module's path ends with ".go".
+Based on github.com/nats-io/nats.go.
+Used in regression tests for golang.org/issue/32483.
+
+-- .mod --
+module example.com/dotgo.go
+
+go 1.13
+-- .info --
+{"Version":"v1.0.0"}
+-- go.mod --
+module example.com/dotgo.go
+
+go 1.13
+-- dotgo.go --
+package dotgo

go/src/cmd/go/testdata/mod/example.com_dotname_v1.0.0.txt

@@ -0,0 +1,12 @@
+-- .info --
+{"Version":"v1.0.0"}
+-- .mod --
+module example.com/dotname
+
+go 1.16
+-- go.mod --
+module example.com/dotname
+
+go 1.16
+-- .dot/dot.go --
+package dot

go/src/cmd/go/testdata/mod/example.com_downgrade_v2.0.0.txt

@@ -0,0 +1,9 @@
+example.com/downgrade v2.0.0
+written by hand
+
+-- .mod --
+module example.com/downgrade
+
+require rsc.io/quote v1.5.2
+-- .info --
+{"Version":"v2.0.0"}

go/src/cmd/go/testdata/mod/example.com_downgrade_v2_v2.0.1.txt

@@ -0,0 +1,13 @@
+example.com/downgrade/v2 v2.0.1
+written by hand
+
+-- .mod --
+module example.com/downgrade/v2
+
+require rsc.io/quote v1.5.2
+-- .info --
+{"Version":"v2.0.1"}
+-- go.mod --
+module example.com/downgrade/v2
+
+require rsc.io/quote v1.5.2

go/src/cmd/go/testdata/mod/example.com_fuzzfail_v0.1.0.txt

@@ -0,0 +1,20 @@
+-- .mod --
+module example.com/fuzzfail
+
+go 1.18
+-- .info --
+{"Version":"v0.1.0"}
+-- go.mod --
+module example.com/fuzzfail
+
+go 1.18
+-- fuzzfail_test.go --
+package fuzzfail
+
+import "testing"
+
+func FuzzFail(f *testing.F) {
+	f.Fuzz(func(t *testing.T, b []byte) {
+		t.Fatalf("oops: %q", b)
+	})
+}

go/src/cmd/go/testdata/mod/example.com_fuzzfail_v0.2.0.txt

@@ -0,0 +1,23 @@
+-- .mod --
+module example.com/fuzzfail
+
+go 1.18
+-- .info --
+{"Version":"v0.2.0"}
+-- go.mod --
+module example.com/fuzzfail
+
+go 1.18
+-- fuzzfail_test.go --
+package fuzzfail
+
+import "testing"
+
+func FuzzFail(f *testing.F) {
+	f.Fuzz(func(t *testing.T, b []byte) {
+		t.Fatalf("oops: %q", b)
+	})
+}
+-- testdata/fuzz/FuzzFail/bbb0c2d22aa1a24617301566dc7486f8b625d38024603ba62757c1124013b49a --
+go test fuzz v1
+[]byte("\x05")

go/src/cmd/go/testdata/mod/example.com_generics_v1.0.0.txt

@@ -0,0 +1,21 @@
+example.com/generics v1.0.0
+written by hand
+
+-- .mod --
+module example.com/generics
+
+go 1.18
+-- .info --
+{"Version":"v1.0.0"}
+-- go.mod --
+module example.com/generics
+
+go 1.18
+-- generics.go --
+package generics
+
+type Int interface {
+	~int
+}
+
+func Bar() {}

go/src/cmd/go/testdata/mod/example.com_ignore_v1.0.0.txt

@@ -0,0 +1,11 @@
+-- .mod --
+module example.com/ignore
+
+ignore ./foo
+-- .info --
+{"Version":"v1.0.0"}
+
+-- foo/foo.go --
+package foo
+
+const Bar = "Hello from foo!"

go/src/cmd/go/testdata/mod/example.com_incompatiblewithsub_v1.0.0.txt

@@ -0,0 +1,8 @@
+Module example.com/incompatiblewithsub has an incompatible version
+and a package in a subdirectory.
+-- .info --
+{"Version":"v1.0.0"}
+-- .mod --
+module example.com/incompatiblewithsub
+-- sub/sub.go --
+package sub

go/src/cmd/go/testdata/mod/example.com_incompatiblewithsub_v2.0.0+incompatible.txt

@@ -0,0 +1,8 @@
+Module example.com/incompatiblewithsub has an incompatible version
+and a package in a subdirectory.
+-- .info --
+{"Version":"v2.0.0+incompatible"}
+-- .mod --
+module example.com/incompatiblewithsub
+-- sub/sub.go --
+package sub

go/src/cmd/go/testdata/mod/example.com_invalidpath_v1_v1.0.0.txt

@@ -0,0 +1,13 @@
+example.com/invalidpath/v1 v1.0.0
+written by hand
+
+-- .mod --
+module example.com/invalidpath/v1
+-- .info --
+{"Version":"v1.0.0"}
+-- go.mod --
+module example.com/invalidpath/v1
+-- version.go --
+package version
+
+const V = "v1.0.0"

go/src/cmd/go/testdata/mod/example.com_join_subpkg_v1.0.0.txt

@@ -0,0 +1,9 @@
+Written by hand.
+Test case for package moved into a parent module.
+
+-- .mod --
+module example.com/join/subpkg
+-- .info --
+{"Version": "v1.0.0"}
+-- x.go --
+package subpkg

go/src/cmd/go/testdata/mod/example.com_join_subpkg_v1.1.0.txt

@@ -0,0 +1,9 @@
+Written by hand.
+Test case for package moved into a parent module.
+
+-- .mod --
+module example.com/join/subpkg
+
+require example.com/join v1.1.0
+-- .info --
+{"Version": "v1.1.0"}

go/src/cmd/go/testdata/mod/example.com_join_v1.0.0.txt

@@ -0,0 +1,7 @@
+Written by hand.
+Test case for package moved into a parent module.
+
+-- .mod --
+module example.com/join
+-- .info --
+{"Version": "v1.0.0"}

go/src/cmd/go/testdata/mod/example.com_join_v1.1.0.txt

@@ -0,0 +1,9 @@
+Written by hand.
+Test case for package moved into a parent module.
+
+-- .mod --
+module example.com/join
+-- .info --
+{"Version": "v1.1.0"}
+-- subpkg/x.go --
+package subpkg

go/src/cmd/go/testdata/mod/example.com_latemigrate_v2_v2.0.0.txt

@@ -0,0 +1,14 @@
+example.com/latemigrate/v2 v2.0.0
+written by hand
+
+This repository migrated to modules in v2.0.1 after v2.0.0 was already tagged.
+All versions require rsc.io/quote so we can test downgrades.
+
+v2.0.0 is technically part of example.com/latemigrate as v2.0.0+incompatible.
+Proxies may serve it as part of the version list for example.com/latemigrate/v2.
+'go get' must be able to ignore these versions.
+
+-- .mod --
+module example.com/latemigrate
+-- .info --
+{"Version":"v2.0.0"}

go/src/cmd/go/testdata/mod/example.com_latemigrate_v2_v2.0.1.txt

@@ -0,0 +1,20 @@
+example.com/latemigrate/v2 v2.0.1
+written by hand
+
+This repository migrated to modules in v2.0.1 after v2.0.0 was already tagged.
+All versions require rsc.io/quote so we can test downgrades.
+
+v2.0.1 belongs to example.com/latemigrate/v2.
+
+-- .mod --
+module example.com/latemigrate/v2
+
+require rsc.io/quote v1.3.0
+-- .info --
+{"Version":"v2.0.1"}
+-- go.mod --
+module example.com/latemigrate/v2
+
+require rsc.io/quote v1.3.0
+-- late.go --
+package late

go/src/cmd/go/testdata/mod/example.com_missingpkg_v1.0.0.txt

@@ -0,0 +1,11 @@
+The deprecated package is present in this version (which is @latest) but
+is deleted in a newer prerelease version.
+
+-- .mod --
+module example.com/missingpkg
+-- .info --
+{"Version":"v1.0.0"}
+-- lib.go --
+package lib
+-- deprecated/deprecated.go --
+package deprecated

go/src/cmd/go/testdata/mod/example.com_missingpkg_v1.0.1-beta.txt

@@ -0,0 +1,8 @@
+The deprecated package is deleted in this version.
+
+-- .mod --
+module example.com/missingpkg
+-- .info --
+{"Version":"v1.0.1-beta"}
+-- lib.go --
+package lib

go/src/cmd/go/testdata/mod/example.com_nest_sub_v1.0.0.txt

@@ -0,0 +1,12 @@
+Written by hand.
+Test case for nested modules without an explicit relationship.
+This is nested below the top-level module.
+
+-- .mod --
+module example.com/nest/sub
+-- .info --
+{"Version": "v1.0.0"}
+-- go.mod --
+module example.com/nest/sub
+-- y/y.go --
+package y

go/src/cmd/go/testdata/mod/example.com_nest_v1.0.0.txt

@@ -0,0 +1,12 @@
+Written by hand.
+Test case for nested modules without an explicit relationship.
+This is the top-level module.
+
+-- .mod --
+module example.com/nest
+-- .info --
+{"Version": "v1.0.0"}
+-- go.mod --
+module example.com/nest
+-- sub/x/x.go --
+package x

go/src/cmd/go/testdata/mod/example.com_nest_v1.1.0.txt

@@ -0,0 +1,12 @@
+Written by hand.
+Test case for nested modules without an explicit relationship.
+This is the top-level module.
+
+-- .mod --
+module example.com/nest
+-- .info --
+{"Version": "v1.1.0"}
+-- go.mod --
+module example.com/nest
+-- sub/x/x.go --
+package x

go/src/cmd/go/testdata/mod/example.com_newcycle_a_v1.0.0.txt

@@ -0,0 +1,10 @@
+example.com/newcycle/a v1.0.0
+
+Transitively requires v1.0.1 of itself via example.com/newcycle/b
+
+-- .mod --
+module example.com/newcycle/a
+
+require example.com/newcycle/b v1.0.0
+-- .info --
+{"Version":"v1.0.0"}

go/src/cmd/go/testdata/mod/example.com_newcycle_a_v1.0.1.txt

@@ -0,0 +1,10 @@
+example.com/newcycle/a v1.0.1
+
+Transitively requires itself via example.com/newcycle/b
+
+-- .mod --
+module example.com/newcycle/a
+
+require example.com/newcycle/b v1.0.0
+-- .info --
+{"Version":"v1.0.1"}

go/src/cmd/go/testdata/mod/example.com_newcycle_b_v1.0.0.txt

@@ -0,0 +1,8 @@
+example.com/newcycle/b v1.0.0
+
+-- .mod --
+module example.com/newcycle/b
+
+require example.com/newcycle/a v1.0.1
+-- .info --
+{"Version":"v1.0.0"}

go/src/cmd/go/testdata/mod/example.com_noroot_v1.0.0.txt

@@ -0,0 +1,8 @@
+A module which has no root package.
+
+-- .mod --
+module example.com/noroot
+-- .info --
+{"Version":"v1.0.0"}
+-- pkg/pkg.go --
+package pkg

go/src/cmd/go/testdata/mod/example.com_noroot_v1.0.1.txt

@@ -0,0 +1,8 @@
+A module which has no root package.
+
+-- .mod --
+module example.com/noroot
+-- .info --
+{"Version":"v1.0.1"}
+-- pkg/pkg.go --
+package pkg

go/src/cmd/go/testdata/mod/example.com_notags_v0.0.0-20190507143103-cc8cbe209b64.txt

@@ -0,0 +1,9 @@
+Written by hand.
+The "latest" version of a module without any tags.
+
+-- .mod --
+module example.com/notags
+-- .info --
+{"Version":"v0.0.0-20190507143103-cc8cbe209b64","Time":"2019-05-07T07:31:03-07:00"}
+-- notags.go --
+package notags

go/src/cmd/go/testdata/mod/example.com_printversion_v0.1.0.txt

@@ -0,0 +1,33 @@
+example.com/printversion v0.1.0
+
+-- .mod --
+module example.com/printversion
+-- .info --
+{"Version":"v0.1.0"}
+-- README.txt --
+There is no go.mod file for this version of the module.
+-- printversion.go --
+package main
+
+import (
+	"fmt"
+	"os"
+	"runtime/debug"
+
+	_ "example.com/version"
+)
+
+func main() {
+	info, _ := debug.ReadBuildInfo()
+	fmt.Fprintf(os.Stdout, "path is %s\n", info.Path)
+	fmt.Fprintf(os.Stdout, "main is %s %s\n", info.Main.Path, info.Main.Version)
+	if r := info.Main.Replace; r != nil {
+		fmt.Fprintf(os.Stdout, "\t(replaced by %s %s)\n", r.Path, r.Version)
+	}
+	for _, m := range info.Deps {
+		fmt.Fprintf(os.Stdout, "using %s %s\n", m.Path, m.Version)
+		if r := m.Replace; r != nil {
+			fmt.Fprintf(os.Stdout, "\t(replaced by %s %s)\n", r.Path, r.Version)
+		}
+	}
+}

go/src/cmd/go/testdata/mod/example.com_printversion_v1.0.0.txt

@@ -0,0 +1,41 @@
+example.com/printversion v1.0.0
+
+-- .mod --
+module example.com/printversion
+
+require example.com/version v1.0.0
+replace example.com/version v1.0.0 => ../oops v0.0.0
+exclude example.com/version v1.1.0
+-- .info --
+{"Version":"v1.0.0"}
+-- go.mod --
+module example.com/printversion
+
+require example.com/version v1.0.0
+replace example.com/version v1.0.0 => ../oops v0.0.0
+exclude example.com/version v1.0.1
+-- printversion.go --
+package main
+
+import (
+	"fmt"
+	"os"
+	"runtime/debug"
+
+	_ "example.com/version"
+)
+
+func main() {
+	info, _ := debug.ReadBuildInfo()
+	fmt.Fprintf(os.Stdout, "path is %s\n", info.Path)
+	fmt.Fprintf(os.Stdout, "main is %s %s\n", info.Main.Path, info.Main.Version)
+	if r := info.Main.Replace; r != nil {
+		fmt.Fprintf(os.Stdout, "\t(replaced by %s %s)\n", r.Path, r.Version)
+	}
+	for _, m := range info.Deps {
+		fmt.Fprintf(os.Stdout, "using %s %s\n", m.Path, m.Version)
+		if r := m.Replace; r != nil {
+			fmt.Fprintf(os.Stdout, "\t(replaced by %s %s)\n", r.Path, r.Version)
+		}
+	}
+}