mockreaper: implement mock reaper

mockreaper is a helpful struct to write unit tests

Signed-off-by: Julio Montes <julio.montes@intel.com>

mockreaper.go

@@ -0,0 +1,43 @@
+//
+// Copyright (c) 2018 Intel Corporation
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
+package main
+
+import "os/exec"
+
+type mockreaper struct {
+}
+
+func (r *mockreaper) init() {
+}
+
+func (r *mockreaper) getExitCodeCh(pid int) (chan<- int, error) {
+	return nil, nil
+}
+
+func (r *mockreaper) setExitCodeCh(pid int, exitCodeCh chan<- int) {
+}
+
+func (r *mockreaper) deleteExitCodeCh(pid int) {
+}
+
+func (r *mockreaper) reap() error {
+	return nil
+}
+
+func (r *mockreaper) start(c *exec.Cmd) (<-chan int, error) {
+	return nil, nil
+}
+
+func (r *mockreaper) wait(exitCodeCh <-chan int, proc waitProcess) (int, error) {
+	return 0, nil
+}
+
+func (r *mockreaper) lock() {
+}
+
+func (r *mockreaper) unlock() {
+}

mockreaper_test.go

@@ -0,0 +1,69 @@
+//
+// Copyright (c) 2018 Intel Corporation
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
+package main
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestMockReaperInit(t *testing.T) {
+	m := &mockreaper{}
+	m.init()
+}
+
+func TestMockReaperGetExitCodeCh(t *testing.T) {
+	assert := assert.New(t)
+	m := &mockreaper{}
+	c, e := m.getExitCodeCh(0)
+	assert.Nil(c)
+	assert.NoError(e)
+}
+
+func TestMockReaperSetExitCodeCh(t *testing.T) {
+	m := &mockreaper{}
+	m.setExitCodeCh(0, nil)
+}
+
+func TestMockReaperDeleteExitCodeCh(t *testing.T) {
+	m := &mockreaper{}
+	m.deleteExitCodeCh(0)
+}
+
+func TestMockReaperReap(t *testing.T) {
+	assert := assert.New(t)
+	m := &mockreaper{}
+	err := m.reap()
+	assert.NoError(err)
+}
+
+func TestMockReaperStart(t *testing.T) {
+	assert := assert.New(t)
+	m := &mockreaper{}
+	c, e := m.start(nil)
+	assert.Nil(c)
+	assert.NoError(e)
+}
+
+func TestMockReaperWait(t *testing.T) {
+	assert := assert.New(t)
+	m := &mockreaper{}
+	e, err := m.wait(nil, &reaperOSProcess{})
+	assert.Equal(0, e)
+	assert.NoError(err)
+}
+
+func TestMockReaperLock(t *testing.T) {
+	m := &mockreaper{}
+	m.lock()
+}
+
+func TestMockReaperUnlock(t *testing.T) {
+	m := &mockreaper{}
+	m.unlock()
+}