1# This test checks that 'go test' prints a reasonable error when fuzzing is
2# enabled, and multiple package or multiple fuzz targets match.
3# TODO(#46312): support fuzzing multiple targets in multiple packages.
4
5[!fuzz] skip
6[short] skip
7env GOCACHE=$WORK/cache
8
9# With fuzzing disabled, multiple targets can be tested.
10go test ./...
11
12# With fuzzing enabled, at most one package may be tested,
13# even if only one package contains fuzz targets.
14! go test -fuzz=. ./...
15stderr '^cannot use -fuzz flag with multiple packages$'
16! go test -fuzz=. ./zero ./one
17stderr '^cannot use -fuzz flag with multiple packages$'
18go test -fuzz=. -fuzztime=1x ./one
19
20# With fuzzing enabled, at most one target in the same package may match.
21! go test -fuzz=. ./two
22stdout '^testing: will not fuzz, -fuzz matches more than one fuzz test: \[FuzzOne FuzzTwo\]$'
23go test -fuzz=FuzzTwo -fuzztime=1x ./two
24
25-- go.mod --
26module fuzz
27
28go 1.18
29-- zero/zero.go --
30package zero
31-- one/one_test.go --
32package one
33
34import "testing"
35
36func FuzzOne(f *testing.F) {
37 f.Fuzz(func(*testing.T, []byte) {})
38}
39-- two/two_test.go --
40package two
41
42import "testing"
43
44func FuzzOne(f *testing.F) {
45 f.Fuzz(func(*testing.T, []byte) {})
46}
47
48func FuzzTwo(f *testing.F) {
49 f.Fuzz(func(*testing.T, []byte) {})
50}
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