1# Test the GODEBUG=toolchaintrace behavior
2# See https://go.dev/issue/63939
3env GODEBUG=toolchaintrace=1
4env TESTGO_VERSION=go1.21.0
5env TESTGO_VERSION_SWITCH=switch
6env GOTOOLCHAIN=auto
7
8# Go line is newer than local go version.
9go mod init m
10go mod edit -go=1.21.1
11go version
12stderr -count=1 'go: upgrading toolchain to go1.21.1 \(required by go line in go.mod; upgrade allowed by GOTOOLCHAIN=auto\)'
13stderr -count=1 'go: using go1.21.1 toolchain from cache located at .*'
14stdout 'go version go1.21.1'
15rm go.mod
16
17# Toolchain line is newer than go line.
18go mod init m
19go mod edit -go=1.21.1 -toolchain=go1.21.2
20go version
21stderr -count=1 'go: upgrading toolchain to go1.21.2 \(required by toolchain line in go.mod; upgrade allowed by GOTOOLCHAIN=auto\)'
22stderr -count=1 'go: using go1.21.2 toolchain from cache located at .*'
23stdout 'go version go1.21.2'
24rm go.mod
25
26# Go line is newer than local go version and toolchain line.
27go mod init m
28go mod edit -go=1.22 -toolchain=go1.21.2
29go version
30stderr -count=1 'go: upgrading toolchain to go1.21.2 \(required by toolchain line in go.mod; upgrade allowed by GOTOOLCHAIN=auto\)'
31stderr -count=1 'go: upgrading toolchain to go1.22.0 \(required by go line in go.mod; upgrade allowed by GOTOOLCHAIN=auto\)'
32stderr -count=1 'go: using go1.22.0 toolchain from cache located at .*'
33stdout 'go version go1.22.0'
34rm go.mod
35
36# No switch.
37go mod init m
38go mod edit -go=1.21.0 -toolchain=go1.21.0
39go version
40stderr -count=1 'go: using local toolchain go1.21.0'
41! stderr 'go: upgrading toolchain'
42stdout 'go version go1.21.0'
43rm go.mod
44
45# GOTOOLCHAIN+auto is older than go line and toolchain line.
46go mod init m
47go mod edit -go=1.22 -toolchain=go1.21.2
48env GOTOOLCHAIN=go1.21.0+auto
49go version
50stderr -count=1 'go: default toolchain set to go1.21.0 from GOTOOLCHAIN=go1.21.0\+auto'
51stderr -count=1 'go: upgrading toolchain to go1.21.2 \(required by toolchain line in go.mod; upgrade allowed by GOTOOLCHAIN=<name>\+auto\)'
52stderr -count=1 'go: upgrading toolchain to go1.22.0 \(required by go line in go.mod; upgrade allowed by GOTOOLCHAIN=<name>\+auto\)'
53stderr -count=1 'go: using go1.22.0 toolchain from cache located at .*'
54stdout 'go version go1.22.0'
55rm go.mod
56
57# GOTOOLCHAIN is older than go line and toolchain line.
58go mod init m
59go mod edit -go=1.22 -toolchain=go1.21.2
60env GOTOOLCHAIN=go1.21.1
61go version
62stderr -count=1 'go: default toolchain set to go1.21.1 from GOTOOLCHAIN=go1.21.1'
63stderr -count=1 'go: using go1.21.1 toolchain from cache located at .*'
64! stderr 'go: upgrading toolchain'
65stdout 'go version go1.21.1'
66rm go.mod
67env GOTOOLCHAIN=auto
68
69# GOTOOLCHAIN+auto is newer than go line and toolchain line.
70go mod init m
71go mod edit -go=1.21.1 -toolchain=go1.21.2
72env GOTOOLCHAIN=go1.22.0+auto
73go version
74stderr -count=1 'go: default toolchain set to go1.22.0 from GOTOOLCHAIN=go1.22.0\+auto'
75stderr -count=1 'go: using go1.22.0 toolchain from cache located at .*'
76stdout 'go version go1.22.0'
77rm go.mod
78
79# GOTOOLCHAIN=local
80env GOTOOLCHAIN=local
81go mod init m
82go mod edit -go=1.21.1 -toolchain=go1.21.2
83go version
84stderr -count=1 'go: default toolchain set to go1.21.0 from GOTOOLCHAIN=local'
85stderr -count=1 'go: using local toolchain go1.21.0'
86stdout 'go version go1.21.0'
87rm go.mod
88
89[short] stop 'requires build'
90# If toolchain found in PATH, ensure we print that.
91env GOTOOLCHAIN=auto
92env TESTGO_VERSION_SWITCH=
93mkdir $WORK/bin
94go build -o $WORK/bin/go1.22.0$GOEXE ./fake/fakego.go # adds .exe extension implicitly on Windows
95[!GOOS:plan9] env PATH=$WORK/bin
96[GOOS:plan9] env path=$WORK/bin
97go mod init m
98go mod edit -go=1.22.0
99! go version
100stderr -count=1 'go: upgrading toolchain to go1.22.0 \(required by go line in go.mod; upgrade allowed by GOTOOLCHAIN=auto\)'
101stderr -count=1 'go: using go1.22.0 toolchain located in system PATH \('$WORK'[/\\]bin[/\\]go1.22.0'$GOEXE'\)'
102stderr 'running go1.22.0 from PATH'
103rm go.mod
104
105
106-- fake/fakego.go --
107package main
108
109import (
110 "fmt"
111 "os"
112 "path/filepath"
113 "strings"
114)
115
116func main() {
117 exe, _ := os.Executable()
118 name := filepath.Base(exe)
119 name = strings.TrimSuffix(name, ".exe")
120 fmt.Fprintf(os.Stderr, "running %s from PATH\n", name)
121 os.Exit(1) // fail in case we are running this accidentally (like in "go mod edit")
122}
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