1env TESTGO_VERSION=go1.21
2env TESTGO_VERSION_SWITCH=switch
3
4# GOTOOLCHAIN=auto should run the newer toolchain
5env GOTOOLCHAIN=auto
6cp go.mod.new go.mod
7go get rsc.io/needgo121 rsc.io/needgo122 rsc.io/needgo123 rsc.io/needall
8stderr '^go: rsc.io/needall@v0.0.1 requires go >= 1.23; switching to go1.23.9$'
9! stderr '\(running'
10stderr '^go: added rsc.io/needall v0.0.1'
11grep 'go 1.23' go.mod
12grep 'toolchain go1.23.9' go.mod
13
14# GOTOOLCHAIN=min+auto should run the newer toolchain
15env GOTOOLCHAIN=go1.21+auto
16cp go.mod.new go.mod
17go get rsc.io/needgo121 rsc.io/needgo122 rsc.io/needgo123 rsc.io/needall
18stderr '^go: rsc.io/needall@v0.0.1 requires go >= 1.23; switching to go1.23.9$'
19! stderr '\(running'
20stderr '^go: added rsc.io/needall v0.0.1'
21grep 'go 1.23' go.mod
22grep 'toolchain go1.23.9' go.mod
23
24# GOTOOLCHAIN=go1.21 should NOT run the newer toolchain
25env GOTOOLCHAIN=go1.21
26cp go.mod.new go.mod
27! go get rsc.io/needgo121 rsc.io/needgo122 rsc.io/needgo123 rsc.io/needall
28! stderr switching
29stderr 'rsc.io/needgo122@v0.0.1 requires go >= 1.22'
30stderr 'rsc.io/needgo123@v0.0.1 requires go >= 1.23'
31stderr 'rsc.io/needall@v0.0.1 requires go >= 1.23'
32stderr 'requires go >= 1.23'
33! stderr 'requires go >= 1.21' # that's us!
34cmp go.mod go.mod.new
35
36# GOTOOLCHAIN=local should NOT run the newer toolchain
37env GOTOOLCHAIN=local
38cp go.mod.new go.mod
39! go get rsc.io/needgo121 rsc.io/needgo122 rsc.io/needgo123 rsc.io/needall
40! stderr switching
41stderr 'rsc.io/needgo122@v0.0.1 requires go >= 1.22'
42stderr 'rsc.io/needgo123@v0.0.1 requires go >= 1.23'
43stderr 'rsc.io/needall@v0.0.1 requires go >= 1.23'
44stderr 'requires go >= 1.23'
45! stderr 'requires go >= 1.21' # that's us!
46cmp go.mod go.mod.new
47
48# go get go@1.22 should resolve to the latest 1.22
49env GOTOOLCHAIN=local
50cp go.mod.new go.mod
51! go get go@1.22
52stderr '^go: updating go.mod requires go >= 1.22.9 \(running go 1.21; GOTOOLCHAIN=local\)'
53
54env GOTOOLCHAIN=auto
55cp go.mod.new go.mod
56go get go@1.22
57stderr '^go: updating go.mod requires go >= 1.22.9; switching to go1.22.9$'
58
59# go get go@1.22rc1 should use 1.22rc1 exactly, not a later release.
60env GOTOOLCHAIN=local
61cp go.mod.new go.mod
62! go get go@1.22rc1
63stderr '^go: updating go.mod requires go >= 1.22rc1 \(running go 1.21; GOTOOLCHAIN=local\)'
64
65env GOTOOLCHAIN=auto
66cp go.mod.new go.mod
67go get go@1.22rc1
68stderr '^go: updating go.mod requires go >= 1.22rc1; switching to go1.22.9$'
69stderr '^go: upgraded go 1.1 => 1.22rc1$'
70stderr '^go: added toolchain go1.22.9$'
71
72# go get go@1.22.1 should use 1.22.1 exactly, not a later release.
73env GOTOOLCHAIN=local
74cp go.mod.new go.mod
75! go get go@1.22.1
76stderr '^go: updating go.mod requires go >= 1.22.1 \(running go 1.21; GOTOOLCHAIN=local\)'
77
78env GOTOOLCHAIN=auto
79cp go.mod.new go.mod
80go get go@1.22.1
81stderr '^go: updating go.mod requires go >= 1.22.1; switching to go1.22.9$'
82stderr '^go: upgraded go 1.1 => 1.22.1$'
83stderr '^go: added toolchain go1.22.9$'
84
85# go get needgo122 (says 'go 1.22') should use 1.22.0, the earliest release we have available
86# (ignoring prereleases).
87env GOTOOLCHAIN=local
88cp go.mod.new go.mod
89! go get rsc.io/needgo122
90stderr '^go: rsc.io/needgo122@v0.0.1 requires go >= 1.22 \(running go 1.21; GOTOOLCHAIN=local\)'
91
92env GOTOOLCHAIN=auto
93cp go.mod.new go.mod
94go get rsc.io/needgo122
95stderr '^go: upgraded go 1.1 => 1.22$'
96stderr '^go: rsc.io/needgo122@v0.0.1 requires go >= 1.22; switching to go1.22.9$'
97stderr '^go: added toolchain go1.22.9$'
98
99# go get needgo1223 (says 'go 1.22.3') should use go 1.22.3
100env GOTOOLCHAIN=local
101cp go.mod.new go.mod
102! go get rsc.io/needgo1223
103stderr '^go: rsc.io/needgo1223@v0.0.1 requires go >= 1.22.3 \(running go 1.21; GOTOOLCHAIN=local\)'
104
105env GOTOOLCHAIN=auto
106cp go.mod.new go.mod
107go get rsc.io/needgo1223
108stderr '^go: upgraded go 1.1 => 1.22.3$'
109stderr '^go: rsc.io/needgo1223@v0.0.1 requires go >= 1.22.3; switching to go1.22.9$'
110stderr '^go: added toolchain go1.22.9$'
111
112# go get needgo124 (says 'go 1.24') should use go 1.24rc1, the only version available
113env GOTOOLCHAIN=local
114cp go.mod.new go.mod
115! go get rsc.io/needgo124
116stderr '^go: rsc.io/needgo124@v0.0.1 requires go >= 1.24 \(running go 1.21; GOTOOLCHAIN=local\)'
117
118env GOTOOLCHAIN=auto
119cp go.mod.new go.mod
120go get rsc.io/needgo124
121stderr '^go: rsc.io/needgo124@v0.0.1 requires go >= 1.24; switching to go1.24rc1$'
122stderr '^go: upgraded go 1.1 => 1.24$'
123stderr '^go: added toolchain go1.24rc1$'
124
125# The -C flag should not happen more than once due to switching.
126mkdir dir dir/dir
127cp go.mod.new go.mod
128cp go.mod.new dir/go.mod
129cp go.mod.new dir/dir/go.mod
130cp p.go dir/p.go
131cp p.go dir/dir/p.go
132go get -C dir rsc.io/needgo124
133stderr '^go: rsc.io/needgo124@v0.0.1 requires go >= 1.24; switching to go1.24rc1$'
134stderr '^go: upgraded go 1.1 => 1.24$'
135stderr '^go: added toolchain go1.24rc1$'
136cmp go.mod.new go.mod
137cmp go.mod.new dir/dir/go.mod
138grep 'go 1.24$' dir/go.mod
139
140-- go.mod.new --
141module m
142go 1.1
143
144-- p.go --
145package p
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