[short] skip

# Control
! go test example2_test.go example1_test.go

# This test only passes if the source order is preserved
go test example1_test.go example2_test.go

-- example1_test.go --
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Make sure that go test runs Example_z before Example_a, preserving source order.

package p

import "fmt"

var n int

func Example_z() {
	n++
	fmt.Println(n)
	// Output: 1
}

func Example_a() {
	n++
	fmt.Println(n)
	// Output: 2
}
-- example2_test.go --
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Make sure that go test runs Example_y before Example_b, preserving source order.

package p

import "fmt"

func Example_y() {
	n++
	fmt.Println(n)
	// Output: 3
}

func Example_b() {
	n++
	fmt.Println(n)
	// Output: 4
}