1# https://golang.org/issue/46141: 'go mod tidy' for a Go 1.17 module should by
2# default preserve enough checksums for the module to be used by Go 1.16.
3#
4# We don't have a copy of Go 1.16 handy, but we can simulate it by editing the
5# 'go' version in the go.mod file to 1.16, without actually updating the
6# requirements to match.
7
8[short] skip
9
10env MODFMT='{{with .Module}}{{.Path}} {{.Version}}{{end}}'
11
12
13# For this module, the "deleted" dependency contains an imported package, but
14# Go 1.16 selects a higher version (in which that package has been deleted).
15
16cp go.mod go.mod.orig
17
18! go mod tidy
19
20stderr '^go: example\.com/m imports\n\texample\.net/deleted loaded from example\.net/deleted@v0\.1\.0,\n\tbut go 1\.16 would fail to locate it in example\.net/deleted@v0\.2\.0\n\n'
21
22stderr '\n\nTo upgrade to the versions selected by go 1.16, leaving some packages unresolved:\n\tgo mod tidy -e -go=1\.16 && go mod tidy -e -go=1\.17\nIf reproducibility with go 1.16 is not needed:\n\tgo mod tidy -compat=1\.17\nFor other options, see:\n\thttps://golang\.org/doc/modules/pruning\n'
23
24# Make sure that -diff behaves the same as tidy.
25[exec:patch] cp go.mod.orig go.mod
26[exec:patch] ! exists go.sum
27[exec:patch] ! go mod tidy -diff
28[exec:patch] ! stdout .
29[exec:patch] stderr '^go: example\.com/m imports\n\texample\.net/deleted loaded from example\.net/deleted@v0\.1\.0,\n\tbut go 1\.16 would fail to locate it in example\.net/deleted@v0\.2\.0\n\n'
30[exec:patch] stderr '\n\nTo upgrade to the versions selected by go 1.16, leaving some packages unresolved:\n\tgo mod tidy -e -go=1\.16 && go mod tidy -e -go=1\.17\nIf reproducibility with go 1.16 is not needed:\n\tgo mod tidy -compat=1\.17\nFor other options, see:\n\thttps://golang\.org/doc/modules/pruning\n'
31
32# The suggested 'go mod tidy -e' command should proceed anyway.
33
34go mod tidy -e
35cmp go.mod go.mod.tidy
36
37# Make sure that -diff behaves the same as tidy.
38[exec:patch] cp go.mod go.mod.tidyResult
39[exec:patch] ! exists go.sum
40[exec:patch] cp go.mod.orig go.mod
41[exec:patch] ! go mod tidy -e -diff
42[exec:patch] cp stdout diff.patch
43[exec:patch] exec patch -p1 -i diff.patch
44[exec:patch] go mod tidy -e -diff
45[exec:patch] ! stdout .
46[exec:patch] cmp go.mod go.mod.tidyResult
47[exec:patch] ! exists go.sum
48
49# In 'go 1.16' mode we should error out in the way we claimed.
50
51cd 116-outside
52! go list -deps -f $MODFMT example.com/m
53stderr '^\.\.[/\\]m\.go:4:2: no required module provides package example\.net/deleted; to add it:\n\tgo get example\.net/deleted$'
54cd ..
55
56go mod edit -go=1.16
57! go list -deps -f $MODFMT example.com/m
58stderr '^go: updates to go\.mod needed; to update it:\n\tgo mod tidy$'
59
60[exec:patch] cp go.mod go.mod.orig
61! go mod tidy
62stderr '^go: example\.com/m imports\n\texample\.net/deleted: module example\.net/deleted@latest found \(v0\.2\.0, replaced by \./d2\), but does not contain package example\.net/deleted$'
63
64# Make sure that -diff behaves the same as tidy.
65[exec:patch] cp go.mod.orig go.mod
66[exec:patch] ! exists go.sum
67[exec:patch] ! go mod tidy -diff
68[exec:patch] ! stdout .
69[exec:patch] stderr '^go: example\.com/m imports\n\texample\.net/deleted: module example\.net/deleted@latest found \(v0\.2\.0, replaced by \./d2\), but does not contain package example\.net/deleted$'
70
71-- go.mod --
72module example.com/m
73
74go 1.17
75
76replace (
77 example.net/deleted v0.1.0 => ./d1
78 example.net/deleted v0.2.0 => ./d2
79 example.net/lazy v0.1.0 => ./lazy
80 example.net/pruned v0.1.0 => ./pruned
81)
82
83require (
84 example.net/deleted v0.1.0
85 example.net/deleted v0.1.0 // redundant
86 example.net/lazy v0.1.0
87)
88-- go.mod.tidy --
89module example.com/m
90
91go 1.17
92
93replace (
94 example.net/deleted v0.1.0 => ./d1
95 example.net/deleted v0.2.0 => ./d2
96 example.net/lazy v0.1.0 => ./lazy
97 example.net/pruned v0.1.0 => ./pruned
98)
99
100require (
101 example.net/deleted v0.1.0
102 example.net/lazy v0.1.0
103)
104-- 116-outside/go.mod --
105module outside
106
107go 1.16
108
109replace (
110 example.com/m => ../
111 example.net/deleted v0.1.0 => ../d1
112 example.net/deleted v0.2.0 => ../d2
113 example.net/lazy v0.1.0 => ../lazy
114 example.net/pruned v0.1.0 => ../pruned
115)
116
117require example.com/m v0.1.0
118-- m.go --
119package m
120
121import (
122 _ "example.net/deleted"
123 _ "example.net/lazy"
124)
125
126-- d1/go.mod --
127module example.net/deleted
128
129go 1.17
130-- d1/deleted.go --
131package deleted
132-- d2/go.mod --
133module example.net/deleted
134
135go 1.17
136-- d2/README --
137There is no longer a Go package here.
138
139-- lazy/go.mod --
140module example.net/lazy
141
142go 1.17
143
144require example.net/pruned v0.1.0
145-- lazy/lazy.go --
146package lazy
147
148-- pruned/go.mod --
149module example.net/pruned
150
151go 1.17
152
153require example.net/deleted v0.2.0
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