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expectation.go
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expectation.go
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package app
import (
"fmt"
"strings"
v1 "k8s.io/api/core/v1"
apierr "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/fields"
. "github.com/argoproj/argo-cd/pkg/apis/application/v1alpha1"
"github.com/argoproj/argo-cd/test/e2e/fixture"
)
type state = string
const (
failed = "failed"
pending = "pending"
succeeded = "succeeded"
)
type Expectation func(c *Consequences) (state state, message string)
func OperationPhaseIs(expected OperationPhase) Expectation {
return func(c *Consequences) (state, string) {
operationState := c.app().Status.OperationState
actual := OperationRunning
if operationState != nil {
actual = operationState.Phase
}
return simple(actual == expected, fmt.Sprintf("operation phase should be %s, is %s", expected, actual))
}
}
func simple(success bool, message string) (state, string) {
if success {
return succeeded, message
} else {
return pending, message
}
}
func SyncStatusIs(expected SyncStatusCode) Expectation {
return func(c *Consequences) (state, string) {
actual := c.app().Status.Sync.Status
return simple(actual == expected, fmt.Sprintf("sync status to be %s, is %s", expected, actual))
}
}
func Condition(conditionType ApplicationConditionType) Expectation {
return func(c *Consequences) (state, string) {
message := fmt.Sprintf("condition of type %s", conditionType)
for _, condition := range c.app().Status.Conditions {
if conditionType == condition.Type {
return succeeded, message
}
}
return failed, message
}
}
func HealthIs(expected HealthStatusCode) Expectation {
return func(c *Consequences) (state, string) {
actual := c.app().Status.Health.Status
return simple(actual == expected, fmt.Sprintf("health to should %s, is %s", expected, actual))
}
}
func ResourceSyncStatusIs(kind, resource string, expected SyncStatusCode) Expectation {
return func(c *Consequences) (state, string) {
actual := c.resource(kind, resource).Status
return simple(actual == expected, fmt.Sprintf("resource '%s/%s' sync status should be %s, is %s", kind, resource, expected, actual))
}
}
func ResourceHealthIs(kind, resource string, expected HealthStatusCode) Expectation {
return func(c *Consequences) (state, string) {
actual := c.resource(kind, resource).Health.Status
return simple(actual == expected, fmt.Sprintf("resource '%s/%s' health should be %s, is %s", kind, resource, expected, actual))
}
}
func ResourceResultNumbering(num int) Expectation {
return func(c *Consequences) (state, string) {
actualNum := len(c.app().Status.OperationState.SyncResult.Resources)
if actualNum < num {
return pending, fmt.Sprintf("not enough results yet, want %d, got %d", num, actualNum)
} else if actualNum == num {
return succeeded, fmt.Sprintf("right number of results, want %d, got %d", num, actualNum)
} else {
return failed, fmt.Sprintf("too many results, want %d, got %d", num, actualNum)
}
}
}
func ResourceResultIs(result ResourceResult) Expectation {
return func(c *Consequences) (state, string) {
for _, res := range c.app().Status.OperationState.SyncResult.Resources {
if *res == result {
return succeeded, fmt.Sprintf("found resource result %v", result)
}
}
return pending, fmt.Sprintf("waiting for resource result %v", result)
}
}
func DoesNotExist() Expectation {
return func(c *Consequences) (state, string) {
_, err := c.get()
if err != nil {
if apierr.IsNotFound(err) {
return succeeded, "app does not exist"
}
return failed, err.Error()
}
return pending, "app should not exist"
}
}
func Pod(predicate func(p v1.Pod) bool) Expectation {
return func(c *Consequences) (state, string) {
pods, err := pods()
if err != nil {
return failed, err.Error()
}
for _, pod := range pods.Items {
if predicate(pod) {
return succeeded, fmt.Sprintf("pod predicate matched pod named '%s'", pod.GetName())
}
}
return pending, fmt.Sprintf("pod predicate does not match pods")
}
}
func NotPod(predicate func(p v1.Pod) bool) Expectation {
return func(c *Consequences) (state, string) {
pods, err := pods()
if err != nil {
return failed, err.Error()
}
for _, pod := range pods.Items {
if predicate(pod) {
return pending, fmt.Sprintf("pod predicate matched pod named '%s'", pod.GetName())
}
}
return succeeded, fmt.Sprintf("pod predicate did not match any pod")
}
}
func pods() (*v1.PodList, error) {
fixture.KubeClientset.CoreV1()
pods, err := fixture.KubeClientset.CoreV1().Pods(fixture.DeploymentNamespace()).List(metav1.ListOptions{})
return pods, err
}
func Event(reason string, message string) Expectation {
return func(c *Consequences) (state, string) {
list, err := fixture.KubeClientset.CoreV1().Events(fixture.ArgoCDNamespace).List(metav1.ListOptions{
FieldSelector: fields.SelectorFromSet(map[string]string{
"involvedObject.name": c.context.name,
"involvedObject.namespace": fixture.ArgoCDNamespace,
}).String(),
})
if err != nil {
return failed, err.Error()
}
for i := range list.Items {
event := list.Items[i]
if event.Reason == reason && strings.Contains(event.Message, message) {
return succeeded, fmt.Sprintf("found event with reason=%s; message=%s", reason, message)
}
}
return failed, fmt.Sprintf("unable to find event with reason=%s; message=%s", reason, message)
}
}
// asserts that the last command was successful
func Success(message string) Expectation {
return func(c *Consequences) (state, string) {
if c.actions.lastError == nil && strings.Contains(c.actions.lastOutput, message) {
return succeeded, fmt.Sprintf("found success with message '%s'", c.actions.lastOutput)
}
return failed, fmt.Sprintf("expected success with message '%s', got error '%v' message '%s'", message, c.actions.lastError, c.actions.lastOutput)
}
}
// asserts that the last command was an error with substring match
func Error(message, err string) Expectation {
return func(c *Consequences) (state, string) {
if c.actions.lastError != nil && strings.Contains(c.actions.lastOutput, message) && strings.Contains(c.actions.lastError.Error(), err) {
return succeeded, fmt.Sprintf("found error with message '%s'", c.actions.lastOutput)
}
return failed, fmt.Sprintf("expected error with message '%s', got error '%v' message '%s'", message, c.actions.lastError, c.actions.lastOutput)
}
}