1# Regression test for https://go.dev/issue/51461 and https://go.dev/issue/51483.
2#
3# When built with -trimpath, runtime.GOROOT() returned the bogus string "go"
4# if GOROOT was not set explicitly in the environment.
5# It should instead return the empty string, since we know that we don't
6# have a valid path to return.
7
8[trimpath] env GOROOT=
9[trimpath] ! go env GOROOT
10[trimpath] stderr '^go: cannot find GOROOT directory: ''go'' binary is trimmed and GOROOT is not set$'
11[trimpath] env GOROOT=$TESTGO_GOROOT
12
13[short] stop
14
15# With GOROOT still set, 'go build' and 'go test -c'
16# should cause runtime.GOROOT() to report either the correct GOROOT
17# (without -trimpath) or no GOROOT at all (with -trimpath).
18
19go build -o example.exe .
20go build -trimpath -o example-trimpath.exe .
21go test -c -o example.test.exe .
22go test -trimpath -c -o example.test-trimpath.exe .
23
24env GOROOT=
25
26exec ./example.exe
27stdout '^GOROOT '$TESTGO_GOROOT'$'
28stdout '^runtime '$TESTGO_GOROOT${/}src${/}runtime'$'
29
30! exec ./example-trimpath.exe
31stdout '^GOROOT $'
32stderr 'cannot find package "runtime" in any of:\n\t\(\$GOROOT not set\)\n\t'$WORK${/}gopath${/}src${/}runtime' \(from \$GOPATH\)\n\z'
33
34exec ./example.test.exe -test.v
35stdout '^GOROOT '$TESTGO_GOROOT'$'
36stdout '^runtime '$TESTGO_GOROOT${/}src${/}runtime'$'
37
38! exec ./example.test-trimpath.exe -test.v
39stdout '^GOROOT $'
40stderr 'cannot find package "runtime" in any of:\n\t\(\$GOROOT not set\)\n\t'$WORK${/}gopath${/}src${/}runtime' \(from \$GOPATH\)$'
41
42# If a correct GOROOT is baked in to the 'go' command itself, 'go run' and
43# 'go test' should not implicitly set GOROOT in the process environment
44# (because that could mask an unexpected production dependency on the GOROOT
45# environment variable), but 'go generate' should (because the generator may
46# reasonably expect to be able to locate the GOROOT for which it is generating
47# code).
48
49[trimpath] stop
50
51! go run -trimpath .
52stdout '^GOROOT $'
53stderr 'cannot find package "runtime" in any of:\n\t\(\$GOROOT not set\)\n\t'$WORK${/}gopath${/}src${/}runtime' \(from \$GOPATH\)\nexit status 1\n\z'
54
55! go test -trimpath -v .
56stdout '^GOROOT $'
57stdout 'cannot find package "runtime" in any of:\n\t\(\$GOROOT not set\)\n\t'$WORK${/}gopath${/}src${/}runtime' \(from \$GOPATH\)$'
58
59env GOFLAGS=-trimpath
60go generate .
61stdout '^GOROOT '$TESTGO_GOROOT'$'
62stdout '^runtime '$TESTGO_GOROOT${/}src${/}runtime'$'
63
64-- go.mod --
65module example
66
67go 1.19
68-- main.go --
69package main
70
71//go:generate go run .
72
73import (
74 "fmt"
75 "go/build"
76 "os"
77 "runtime"
78)
79
80func main() {
81 fmt.Println("GOROOT", runtime.GOROOT())
82
83 p, err := build.Default.Import("runtime", "", build.FindOnly)
84 if err != nil {
85 fmt.Fprintln(os.Stderr, err)
86 os.Exit(1)
87 }
88 fmt.Println("runtime", p.Dir)
89}
90-- main_test.go --
91package main
92
93import "testing"
94
95func TestMain(*testing.M) {
96 main()
97}
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