// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Test for select: Issue 2075
// A bug in select corrupts channel queues of failed cases
// if there are multiple waiters on those channels and the
// select is the last in the queue. If further waits are made
// on the channel without draining it first then those waiters

// nil.
//
// selectgo returns the index of the chosen scase, which matches the
// ordinal position of its respective select{recv,send,default} call.
// Also, if the chosen scase was a receive operation, it reports whether
// a value was received.
func selectgo(cas0 *scase, order0 *uint16, pc0 *uintptr, nsends, nrecvs int, block bool) (int, bool) {
	if debugSelect {
		print("select: cas0=", cas0, "\n")
	}

    labels:
      app: reviews # Multiple sidecars have the same selector, should generate errors for both
  egress:
  - hosts:
    - "./*"
---
apiVersion: networking.istio.io/v1alpha3
kind: Sidecar
metadata:
  name: dupe-2
  namespace: default
spec:
  workloadSelector:
    labels:
      app: reviews # Multiple sidecars have the same selector, should generate errors for both
  egress:
  - hosts:
    - "./*"

	testBlock(always, func() {
		ch := make(chan int)
		<-ch
	})

	// empty selects always block
	testBlock(always, func() {
		select {}
	})

	// selects with only nil channels always block
	testBlock(always, func() {
		select {
		case <-nilch:
			unreachable()
		}
	})
	testBlock(always, func() {
		select {
		case nilch <- 7:
			unreachable()
		}
	})
	testBlock(always, func() {

kind: Telemetry
metadata:
  name: no-selector # Since this is the only Telemetry in the namespace without a selector, no conflict
  namespace: ns1
spec:
  metrics:
  - providers:
    - name: prometheus
    overrides:
    - match:
        metric: ALL_METRICS
      disabled: false
---
apiVersion: telemetry.istio.io/v1alpha1
kind: Telemetry
metadata:
  name: has-selector
  namespace: ns1
spec:

kind: Sidecar
metadata:
  name: no-selector # Since this is the only Sidecar in the namespace without a workload selector, no conflict
  namespace: ns1
spec:
  egress:
  - hosts:
    - "./*"
---
apiVersion: networking.istio.io/v1alpha3
kind: Sidecar
metadata:
  name: has-selector
  namespace: ns1
spec:
  workloadSelector: # Since this has a workload selector, it shouldn't conflict with the other Sidecar in the namespace

// license that can be found in the LICENSE file

// Test that a select statement proceeds when a value is ready.

package main

func f() *int {
	println("BUG: called f")
	return new(int)
}

func main() {
	var x struct {
		a int
	}
	c := make(chan int, 1)
	c1 := make(chan int)
	c <- 42
	select {
	case *f() = <-c1:
		// nothing
	case x.a = <-c:
		if x.a != 42 {

apiVersion: v1
kind: Pod
metadata:
  name: selector-test-pod
  labels:
    name: selector-test-pod
    unique-label: bingbang
spec:
  containers:
  - name: kubernetes-pause

apiVersion: v1
kind: Service
metadata:
  name: svc-no-selector
  namespace: default
spec:
  ports:
    - name: https
      port: 443
      protocol: TCP
      targetPort: 6443
---
# this deployment is not associated with any service, so it should generate a warning
apiVersion: apps/v1
kind: Deployment
metadata:
  name: helloworld-v2
  namespace: default
  labels:
    app: helloworld
    version: v2
spec:

// license that can be found in the LICENSE file.

// Test that selects do not consume undue memory.

package main

import "runtime"

func sender(c chan int, n int) {
	for i := 0; i < n; i++ {
		c <- 1
	}
}

func receiver(c, dummy chan int, n int) {
	for i := 0; i < n; i++ {
		select {
		case <-c:
			// nothing
		case <-dummy:
			panic("dummy")
		}
	}
}