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rollingupdate_test: add tests for rolling update 

The tests create a cluster with 2 node instance groups and 1 master and bastion instance groups.
Only one node instance group requires rolling update.

instanceGroupNodeSpecificErrorClusterValidator mocks a validation failure for a given node group.
rolling update should not fail if the cluster validator reports an error in an unrelated instance group.
This commit is contained in:
Bharath Vedartham 2020-10-31 19:17:45 +05:30
parent 7067f5f47a
commit 1e18a5d344
1 changed files with 108 additions and 0 deletions
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108
pkg/instancegroups/rollingupdate_test.go
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@ -105,6 +105,24 @@ func (*erroringClusterValidator) Validate() (*validation.ValidationCluster, erro
return nil, errors.New("testing validation error")
}
// instanceGroupNodeSpecificErrorClusterValidator simulates failures in a specific node group in the map of instance groups
type instanceGroupNodeSpecificErrorClusterValidator struct {
InstanceGroup *kopsapi.InstanceGroup
}
func (igErrorValidator *instanceGroupNodeSpecificErrorClusterValidator) Validate() (*validation.ValidationCluster, error) {
return &validation.ValidationCluster{
Failures: []*validation.ValidationError{
{
Kind: "testing",
Name: "testing failure",
Message: "testing failure",
InstanceGroup: igErrorValidator.InstanceGroup,
},
},
}, nil
}
type assertNotCalledClusterValidator struct {
T *testing.T
}
@ -458,6 +476,96 @@ func TestRollingUpdateClusterErrorsValidationAfterOneMaster(t *testing.T) {
assertGroupInstanceCount(t, cloud, "bastion-1", 0)
}
func TestRollingUpdateNonRelatedInstanceGroupFailure(t *testing.T) {
c, cloud := getTestSetup()
groups := make(map[string]*cloudinstances.CloudInstanceGroup)
makeGroup(groups, c.K8sClient, cloud, "node-1", kopsapi.InstanceGroupRoleNode, 3, 3)
makeGroup(groups, c.K8sClient, cloud, "node-2", kopsapi.InstanceGroupRoleNode, 3, 0)
makeGroup(groups, c.K8sClient, cloud, "master-1", kopsapi.InstanceGroupRoleMaster, 2, 0)
makeGroup(groups, c.K8sClient, cloud, "bastion-1", kopsapi.InstanceGroupRoleBastion, 1, 0)
c.ClusterValidator = &instanceGroupNodeSpecificErrorClusterValidator{
InstanceGroup: groups["node-2"].InstanceGroup,
}
err := c.RollingUpdate(groups, &kopsapi.InstanceGroupList{})
assert.NoError(t, err, "rolling update")
assertGroupInstanceCount(t, cloud, "node-1", 0)
assertGroupInstanceCount(t, cloud, "node-2", 3)
assertGroupInstanceCount(t, cloud, "master-1", 2)
assertGroupInstanceCount(t, cloud, "bastion-1", 1)
}
func TestRollingUpdateRelatedInstanceGroupFailure(t *testing.T) {
c, cloud := getTestSetup()
groups := make(map[string]*cloudinstances.CloudInstanceGroup)
makeGroup(groups, c.K8sClient, cloud, "node-1", kopsapi.InstanceGroupRoleNode, 3, 3)
makeGroup(groups, c.K8sClient, cloud, "node-2", kopsapi.InstanceGroupRoleNode, 3, 0)
makeGroup(groups, c.K8sClient, cloud, "master-1", kopsapi.InstanceGroupRoleMaster, 2, 0)
makeGroup(groups, c.K8sClient, cloud, "bastion-1", kopsapi.InstanceGroupRoleBastion, 1, 0)
c.ClusterValidator = &instanceGroupNodeSpecificErrorClusterValidator{
InstanceGroup: groups["node-1"].InstanceGroup,
}
err := c.RollingUpdate(groups, &kopsapi.InstanceGroupList{})
assert.Error(t, err, "rolling update")
assertGroupInstanceCount(t, cloud, "node-1", 3)
assertGroupInstanceCount(t, cloud, "node-2", 3)
assertGroupInstanceCount(t, cloud, "master-1", 2)
assertGroupInstanceCount(t, cloud, "bastion-1", 1)
}
func TestRollingUpdateMasterGroupFailure(t *testing.T) {
c, cloud := getTestSetup()
groups := make(map[string]*cloudinstances.CloudInstanceGroup)
makeGroup(groups, c.K8sClient, cloud, "node-1", kopsapi.InstanceGroupRoleNode, 3, 3)
makeGroup(groups, c.K8sClient, cloud, "node-2", kopsapi.InstanceGroupRoleNode, 3, 0)
makeGroup(groups, c.K8sClient, cloud, "master-1", kopsapi.InstanceGroupRoleMaster, 2, 0)
makeGroup(groups, c.K8sClient, cloud, "bastion-1", kopsapi.InstanceGroupRoleBastion, 1, 0)
c.ClusterValidator = &instanceGroupNodeSpecificErrorClusterValidator{
InstanceGroup: groups["master-1"].InstanceGroup,
}
err := c.RollingUpdate(groups, &kopsapi.InstanceGroupList{})
assert.Error(t, err, "rolling update")
assertGroupInstanceCount(t, cloud, "node-1", 3)
assertGroupInstanceCount(t, cloud, "node-2", 3)
assertGroupInstanceCount(t, cloud, "master-1", 2)
assertGroupInstanceCount(t, cloud, "bastion-1", 1)
}
func TestRollingUpdateValidationErrorInstanceGroupNil(t *testing.T) {
c, cloud := getTestSetup()
groups := make(map[string]*cloudinstances.CloudInstanceGroup)
makeGroup(groups, c.K8sClient, cloud, "node-1", kopsapi.InstanceGroupRoleNode, 3, 3)
makeGroup(groups, c.K8sClient, cloud, "node-2", kopsapi.InstanceGroupRoleNode, 3, 0)
makeGroup(groups, c.K8sClient, cloud, "master-1", kopsapi.InstanceGroupRoleMaster, 2, 0)
makeGroup(groups, c.K8sClient, cloud, "bastion-1", kopsapi.InstanceGroupRoleBastion, 1, 0)
c.ClusterValidator = &instanceGroupNodeSpecificErrorClusterValidator{
InstanceGroup: nil,
}
err := c.RollingUpdate(groups, &kopsapi.InstanceGroupList{})
assert.Error(t, err, "rolling update")
assertGroupInstanceCount(t, cloud, "node-1", 3)
assertGroupInstanceCount(t, cloud, "node-2", 3)
assertGroupInstanceCount(t, cloud, "master-1", 2)
assertGroupInstanceCount(t, cloud, "bastion-1", 1)
}
func TestRollingUpdateClusterFailsValidationAfterOneNode(t *testing.T) {
c, cloud := getTestSetup()