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
25# The suggested 'go mod tidy -e' command should proceed anyway.
26
27go mod tidy -e
28cmp go.mod go.mod.tidy
29
30
31# In 'go 1.16' mode we should error out in the way we claimed.
32
33cd 116-outside
34! go list -deps -f $MODFMT example.com/m
35stderr '^\.\.[/\\]m\.go:4:2: no required module provides package example\.net/deleted; to add it:\n\tgo get example\.net/deleted$'
36cd ..
37
38go mod edit -go=1.16
39! go list -deps -f $MODFMT example.com/m
40stderr '^go: updates to go\.mod needed; to update it:\n\tgo mod tidy$'
41
42! go mod tidy
43stderr '^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$'
44
45
46-- go.mod --
47module example.com/m
48
49go 1.17
50
51replace (
52 example.net/deleted v0.1.0 => ./d1
53 example.net/deleted v0.2.0 => ./d2
54 example.net/lazy v0.1.0 => ./lazy
55 example.net/pruned v0.1.0 => ./pruned
56)
57
58require (
59 example.net/deleted v0.1.0
60 example.net/deleted v0.1.0 // redundant
61 example.net/lazy v0.1.0
62)
63-- go.mod.tidy --
64module example.com/m
65
66go 1.17
67
68replace (
69 example.net/deleted v0.1.0 => ./d1
70 example.net/deleted v0.2.0 => ./d2
71 example.net/lazy v0.1.0 => ./lazy
72 example.net/pruned v0.1.0 => ./pruned
73)
74
75require (
76 example.net/deleted v0.1.0
77 example.net/lazy v0.1.0
78)
79-- 116-outside/go.mod --
80module outside
81
82go 1.16
83
84replace (
85 example.com/m => ../
86 example.net/deleted v0.1.0 => ../d1
87 example.net/deleted v0.2.0 => ../d2
88 example.net/lazy v0.1.0 => ../lazy
89 example.net/pruned v0.1.0 => ../pruned
90)
91
92require example.com/m v0.1.0
93-- m.go --
94package m
95
96import (
97 _ "example.net/deleted"
98 _ "example.net/lazy"
99)
100
101-- d1/go.mod --
102module example.net/deleted
103
104go 1.17
105-- d1/deleted.go --
106package deleted
107-- d2/go.mod --
108module example.net/deleted
109
110go 1.17
111-- d2/README --
112There is no longer a Go package here.
113
114-- lazy/go.mod --
115module example.net/lazy
116
117go 1.17
118
119require example.net/pruned v0.1.0
120-- lazy/lazy.go --
121package lazy
122
123-- pruned/go.mod --
124module example.net/pruned
125
126go 1.17
127
128require example.net/deleted v0.2.0
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