env GO111MODULE=off

# As of Go 1.12, the module cache is required.

# If none of the variables we use to locate GOCACHE are set, the cache is off
# and we cannot build.
env GOCACHE=
env XDG_CACHE_HOME=
env HOME=
[GOOS:plan9] env home=
[GOOS:windows] env LocalAppData=
! go build -o triv triv.go
stderr 'build cache is required, but could not be located: GOCACHE is not defined and .*'

func processOptions(env string) {
field:
	for env != "" {
		field := ""
		i := indexByte(env, ',')
		if i < 0 {
			field, env = env, ""
		} else {
			field, env = env[:i], env[i+1:]
		}
		if len(field) < 4 || field[:4] != "cpu." {
			continue
		}
		i = indexByte(field, '=')
		if i < 0 {
			print("GODEBUG: no value specified for \"", field, "\"\n")

handle git

env GIT_AUTHOR_NAME='Russ Cox'
env GIT_AUTHOR_EMAIL='******@****.***'
env GIT_COMMITTER_NAME=$GIT_AUTHOR_NAME
env GIT_COMMITTER_EMAIL=$GIT_AUTHOR_EMAIL

git init

at 2018-04-25T10:59:24-04:00
git add p1 p2
git commit -m 'initial commit'
git branch -m master

git log --oneline --decorate=short
cmp stdout .git-log

-- .git-log --
6b4ba8b (HEAD -> master) initial commit
-- p1/p1.go --
package p1

go build -trimpath -o $WORK/new/bin/go$GOEXE cmd/go &
go build -trimpath -o $WORK/bin/check$GOEXE check.go &
wait

env TESTGOROOT=$GOROOT
env GOROOT=

# Unset GOPATH and any variables that its default may be derived from,
# so that we can check for a spurious warning.
env GOPATH=
env HOME=''
env USERPROFILE=''
env home=''

# Relocated Executable
# Since we built with -trimpath and the binary isn't installed in a

#         ; freeGenList = list:{ [env or config or label or message or html] }
#         ; propertiesHtmlList = list:{ [env or config or label or message] }
#     }
#     ; appMap = map:{
#         ; [application name, camel case, initial uncapitalised] = map:{
#             ; path = [relative path to application project from DBFlute client]
#             ; freeGenList = list:{ [env or config or label or message or html] }

env TESTGO_VERSION=go1.500
env TESTGO_VERSION_SWITCH=switch

# GOTOOLCHAIN=auto runs default toolchain without a go.mod or go.work
env GOTOOLCHAIN=auto
go version
stdout go1.500

# GOTOOLCHAIN=path runs default toolchain without a go.mod or go.work
env GOTOOLCHAIN=path
go version
stdout go1.500

# GOTOOLCHAIN=asdf is a syntax error
env GOTOOLCHAIN=asdf
! go version

# Test default GOPROXY and GOSUMDB
[go-builder] env GOPROXY=
[go-builder] env GOSUMDB=
[go-builder] go env GOPROXY
[go-builder] stdout '^https://proxy.golang.org,direct$'
[go-builder] go env GOSUMDB
[go-builder] stdout '^sum.golang.org$'
[go-builder] env GOPROXY=https://proxy.golang.org
[go-builder] go env GOSUMDB
[go-builder] stdout '^sum.golang.org$'

# Download direct from github.

[!net:proxy.golang.org] skip
[!net:sum.golang.org] skip

! stderr preferlinkext
env CGO_CFLAGS=-flto
go build -x -n -o dummy.exe ./usesInternalCgo
stderr preferlinkext
env CGO_CFLAGS=-fplugin
go build -x -n -o dummy.exe ./usesInternalCgo
stderr preferlinkext
env CGO_CFLAGS=-fprofile-instr-generate
go build -x -n -o dummy.exe ./usesInternalCgo
stderr preferlinkext

# The -fdebug-prefix-map=path is permitted for internal linking.

[short] skip
[!exec:clang] [!exec:gcc] skip
[!cgo] skip

env GOENV=$WORK/go.env
mkdir 'program files'
go build -o 'program files' './which cc/which cc.go'
[exec:clang] env CC='"'$PWD${/}program' 'files${/}which' 'cc"' 'clang
[!exec:clang] env CC='"'$PWD${/}program' 'files${/}which' 'cc"' 'gcc
go env CC
stdout 'program files[/\\]which cc" (clang|gcc)$'
go env -w CC=$CC
env CC=
go env CC
stdout 'program files[/\\]which cc" (clang|gcc)$'

[!net:golang.org] skip
[!git] skip

env GO111MODULE=on
env GOPROXY=direct
env GOSUMDB=off

# Regression test for golang.org/issue/27171: after resolving an older
# pseudo-version of a commit, future resolution of that commit by hash should
# choose the highest appropriate pseudo-version instead of the cached one.

go mod download -json golang.org/x/text@v0.0.0-20171215141712-a1b916ed6726
stdout '"Version": "v0.0.0-20171215141712-a1b916ed6726",'