example.com/pseudoupgrade v0.1.0
written by hand

-- .mod --
module example.com/pseudoupgrade

-- .info --
{"Version":"v0.1.0","Name":"","Short":"","Time":"2019-04-29T07:30:30Z"}

-- pseudoupgrade.go --
package pseudoupgrade

example.com/newcycle/b v1.0.0

-- .mod --
module example.com/newcycle/b

require example.com/newcycle/a v1.0.1
-- .info --

Module example.com/retract/self/prerelease is a module that retracts its own
latest version and all other release version.

A pre-release version higher than the highest release version is still
available, and that should be matched by @latest.

-- .mod --
module example.com/retract/self/prerelease

go 1.15

-- .info --
{"Version":"v1.0.0"}

-- p.go --

-- .mod --
module example.com/retract/ambiguous/other

go 1.16

require example.com/retract/ambiguous v1.0.0
-- .info --
{"Version":"v1.0.0"}
-- other.go --
package other

-- .mod --
module example.com/fuzzfail

go 1.18
-- .info --
{"Version":"v0.1.0"}
-- go.mod --
module example.com/fuzzfail

go 1.18
-- fuzzfail_test.go --
package fuzzfail

import "testing"

func FuzzFail(f *testing.F) {
	f.Fuzz(func(t *testing.T, b []byte) {
		t.Fatalf("oops: %q", b)
	})

-- .mod --
module example.com/fuzzfail

go 1.18
-- .info --
{"Version":"v0.2.0"}
-- go.mod --
module example.com/fuzzfail

go 1.18
-- fuzzfail_test.go --
package fuzzfail

import "testing"

func FuzzFail(f *testing.F) {
	f.Fuzz(func(t *testing.T, b []byte) {
		t.Fatalf("oops: %q", b)
	})
}
-- testdata/fuzz/FuzzFail/bbb0c2d22aa1a24617301566dc7486f8b625d38024603ba62757c1124013b49a --
go test fuzz v1

Module example.com/retract/description retracts all versions of itself.
The rationale comments have various problems.

-- .mod --
module example.com/retract/rationale

go 1.14

retract (
	v1.0.0-empty

	// short description
	// more
	//
	// detail
	v1.0.0-multiline1 // suffix
	// after not included
)

// short description
// more
//
// detail
retract v1.0.0-multiline2 // suffix

Module example.com/retract/self/prev is a module that retracts its own
latest version, as well as an earlier version.

A previous unretracted release version, v1.1.0, is still available.

-- .mod --
module example.com/retract/self/prev

go 1.15

retract v1.0.0-bad // bad
retract v1.9.0 // self

-- .info --
{"Version":"v1.9.0"}

-- p.go --

Module example.com/incompatiblewithsub has an incompatible version
and a package in a subdirectory.
-- .info --
{"Version":"v1.0.0"}
-- .mod --
module example.com/incompatiblewithsub
-- sub/sub.go --

Written by hand.
Test case for getting a package that has been moved to a different module.

-- .mod --
module example.com/split

require example.com/split/subpkg v1.1.0
-- .info --