go mod vendor
cmp vendor/example.com/a/samedir_embed.txt a/samedir_embed.txt
cmp vendor/example.com/a/subdir/embed.txt a/subdir/embed.txt
cmp vendor/example.com/a/subdir/test/embed.txt a/subdir/test/embed.txt
cmp vendor/example.com/a/subdir/test/xtest/embed.txt a/subdir/test/xtest/embed.txt

cd broken_no_matching_files
! go mod vendor
stderr '^go: resolving embeds in example.com/brokendep: pattern foo.txt: no matching files found$'
go mod vendor -e

go mod why golang.org/x/text/language
cmp stdout why-language.txt

# why a module?
go mod why -m golang.org...
cmp stdout why-text-module.txt

# why a package used only in tests?
go mod why rsc.io/testonly
cmp stdout why-testonly.txt

# why a module used only in a test of a dependency?
go mod why -m rsc.io/testonly
cmp stdout why-testonly.txt

# test package not needed
go mod why golang.org/x/text/unused

# The whole enchilada.
go tool covdata textfmt -i=$WORK/covdata -o=$WORK/covdata/out.txt
grep 'mode: set' $WORK/covdata/out.txt
grep 'mod.example/main/main.go:' $WORK/covdata/out.txt
grep 'mod.example/sub/sub.go:' $WORK/covdata/out.txt
grep 'rsc.io' $WORK/covdata/out.txt
grep 'bufio/bufio.go:' $WORK/covdata/out.txt

# Use the covdata tool to select a specific set of module paths
mkdir $WORK/covdata2

	# of a directory within the module cache.
cp $WORK/extraneous.txt $GOPATH/pkg/mod/example.com/printversion@v0.1.0/extraneous_file.go
go clean -modcache


! go install -unknownflag -tags -modcacherw example.com/printversion@v0.1.0
stderr '^flag provided but not defined: -unknownflag$'
cp $WORK/extraneous.txt $GOPATH/pkg/mod/example.com/printversion@v0.1.0/extraneous_file.go
go clean -modcache

go build -x -o main main.go
cp stderr commands.txt
cat header.txt commands.txt
cp stdout test.sh

exec ./main
cmp stderr hello.txt
rm ./main

exec /usr/bin/env bash -x test.sh
exec ./main
cmp stderr hello.txt

grep '^WORK=(.*)\n' commands.txt

-- main.go --
package main

import "C"

func main() {
	print("hello\n")
}
-- header.txt --
set -e
-- hello.txt --

# between the go.mod file and vendor/modules.txt.
# A 'go 1.13' vendor/modules.txt file is not usually sufficient
# to pass those checks.
go mod edit -go=1.14

! go list -f {{.Dir}} -tags tools all
stderr '^go: inconsistent vendoring in '$WORK[/\\]auto':$'
stderr '^\texample.com/printversion@v1.0.0: is explicitly required in go.mod, but not marked as explicit in vendor/modules.txt'

# Get errors from a go test into stderr.txt
! go test coverbad
stderr 'p\.go:4:2' # look for error at coverbad/p.go:4
[cgo] stderr 'p1\.go:6:2' # look for error at coverbad/p.go:6
! stderr $WORK # make sure temporary directory isn't in error

cp stderr $WORK/stderr.txt

# Get errors from coverage into stderr2.txt
! go test -cover coverbad
cp stderr $WORK/stderr2.txt

wait # for go run above

! go build -x
! exists $WORK/log.txt

-- go.mod --
module m

-- m.go --
package m

// #define X 1
import "C"

-- $WORK/program files/gcc --
#!/bin/sh

echo ok >$WORK/log.txt
-- $WORK/program files/clang --
#!/bin/sh

echo ok >$WORK/log.txt
-- $WORK/program files/gcc.bat --
echo ok >%WORK%\log.txt
-- $WORK/program files/clang.bat --

import "C"

-- p/gcc --
#!/bin/sh
echo ran gcc >bug.txt
-- p/clang --
#!/bin/sh
echo ran clang >bug.txt
-- p/gcc.bat --
echo ran gcc >bug.txt
-- p/clang.bat --

exec $GOBIN/now
cp stdout start_time.txt
go test -x -c -test.bench=XXX errors
! stderr '[\\/]link|gccgo' # make sure up-to-date test binary is not relinked
exec $GOBIN/mtime errors.test$GOEXE
cp stdout errors1_mod_time.txt
exec $GOBIN/before start_time.txt errors1_mod_time.txt
rm start_time.txt errors1_mod_time.txt

# Check errors2.test mtime is updated
exec $GOBIN/now
cp stdout start_time.txt
go test -x -c -o errors2.test errors