// TestWorkerAncestry does basic tests on worker parents and children.
func TestWorkerAncestry(t *testing.T) {
var (
err error
parent, child, worker coordinate.Worker
kids []coordinate.Worker
)
sts := SimpleTestSetup{NamespaceName: "TestWorkerAncestry"}
sts.SetUp(t)
defer sts.TearDown(t)
// start in the middle
parent, err = sts.Namespace.Worker("parent")
if !assert.NoError(t, err) {
return
}
worker, err = parent.Parent()
if assert.NoError(t, err) {
assert.Nil(t, worker)
}
kids, err = parent.Children()
if assert.NoError(t, err) {
assert.Empty(t, kids)
}
// Create a child
child, err = sts.Namespace.Worker("child")
if !assert.NoError(t, err) {
return
}
err = child.SetParent(parent)
assert.NoError(t, err)
// this should update the parent metadata
worker, err = parent.Parent()
if assert.NoError(t, err) {
assert.Nil(t, worker)
}
kids, err = parent.Children()
if assert.NoError(t, err) && assert.Len(t, kids, 1) {
assert.Equal(t, "child", kids[0].Name())
}
// and also the child metadata
worker, err = child.Parent()
if assert.NoError(t, err) && assert.NotNil(t, worker) {
assert.Equal(t, "parent", worker.Name())
}
kids, err = child.Children()
if assert.NoError(t, err) {
assert.Empty(t, kids)
}
}
// TestWorkerAdoption hands a child worker to a new parent.
func TestWorkerAdoption(t *testing.T) {
var (
err error
child, oldParent, newParent, worker coordinate.Worker
kids []coordinate.Worker
)
sts := SimpleTestSetup{NamespaceName: "TestWorkerAdoption"}
sts.SetUp(t)
defer sts.TearDown(t)
// Create the worker objects
child, err = sts.Namespace.Worker("child")
if !assert.NoError(t, err) {
return
}
oldParent, err = sts.Namespace.Worker("old")
if !assert.NoError(t, err) {
return
}
newParent, err = sts.Namespace.Worker("new")
if !assert.NoError(t, err) {
return
}
// Set up the original ancestry
err = child.SetParent(oldParent)
assert.NoError(t, err)
// Move it to the new parent
err = child.SetParent(newParent)
assert.NoError(t, err)
// Checks
worker, err = child.Parent()
if assert.NoError(t, err) && assert.NotNil(t, worker) {
assert.Equal(t, "new", worker.Name())
}
kids, err = child.Children()
if assert.NoError(t, err) {
assert.Empty(t, kids)
}
worker, err = oldParent.Parent()
if assert.NoError(t, err) {
assert.Nil(t, worker)
}
kids, err = oldParent.Children()
if assert.NoError(t, err) {
assert.Empty(t, kids)
}
worker, err = newParent.Parent()
if assert.NoError(t, err) {
assert.Nil(t, worker)
}
kids, err = newParent.Children()
if assert.NoError(t, err) && assert.Len(t, kids, 1) {
assert.Equal(t, "child", kids[0].Name())
}
}