Function TestRandError_pre_Go1_24

cryptorand/errors_go123_test.go:22–35

TestRandError_pre_Go1_24 checks that the code handles errors when reading from the rand.Reader. This test replaces the global rand.Reader, so cannot be parallelized nolint:paralleltest

(t *testing.T)

//
//nolint:paralleltest
func TestRandError_pre_Go1_24(t *testing.T) {
	origReader := rand.Reader
	t.Cleanup(func() {
		rand.Reader = origReader
	})

	rand.Reader = iotest.ErrReader(io.ErrShortBuffer)

	// Testing `rand.Reader.Read` for errors will panic in Go 1.24 and later.
	t.Run("StringCharset", func(t *testing.T) {
		_, err := cryptorand.HexString(10)
		require.ErrorIs(t, err, io.ErrShortBuffer, "expected HexString error")
	})
}