"k8s.io/client-go/kubernetes"
	"k8s.io/client-go/kubernetes/fake"
	k8stesting "k8s.io/client-go/testing"

	"istio.io/istio/pkg/revisions"
	"istio.io/istio/pkg/test/util/retry"
)

const testLock = "test-lock"

func createElection(t *testing.T,
	name string, revision string,
	watcher revisions.DefaultWatcher,
	expectLeader bool,
	client kubernetes.Interface, fns ...func(stop <-chan struct{}),

		}
		testReadFrom struct { // ReadFrom(testFile{ops}) == (wantCnt, wantErr)
			ops     fileOps
			wantCnt int64
			wantErr error
		}
		testClose struct { // Close() == wantErr
			wantErr error
		}
		testFnc any // testHeader | testWrite | testReadFrom | testClose
	)

	vectors := []struct {
		file  string // Optional filename of expected output
		tests []testFnc
	}{{

        }, receivingFileLockContentionHandler)
        receivingSocket = receivingFileLockContentionHandler.communicator.socket
        receivingLock = fileLockManager.lock(file("locks/testlock"), DefaultLockOptions.mode(FileLockManager.LockMode.Exclusive), "testlock", "test holding lock", whenContended)
    }

	const src = `package issue47243; var a uint64; var _ = a << uint64(4294967296)` // uint64(1<<32)
	testFiles(t, []string{"p.go"}, [][]byte{[]byte(src)}, false, withSizes(&StdSizes{4, 4}))
}

func TestCheck(t *testing.T) {
	old := buildcfg.Experiment.RangeFunc
	defer func() {
		buildcfg.Experiment.RangeFunc = old
	}()
	buildcfg.Experiment.RangeFunc = true

	DefPredeclaredTestFuncs()

	const src = `package issue47243; var a uint64; var _ = a << uint64(4294967296)` // uint64(1<<32)
	testFiles(t, []string{"p.go"}, [][]byte{[]byte(src)}, 0, false, withSizes(&StdSizes{4, 4}))
}

func TestCheck(t *testing.T) {
	old := buildcfg.Experiment.RangeFunc
	defer func() {
		buildcfg.Experiment.RangeFunc = old
	}()
	buildcfg.Experiment.RangeFunc = true

	DefPredeclaredTestFuncs()

			result := Reverse(tc.input)
			if diff := cmp2.Diff(tc.expected, result); diff != "" {
				t.Errorf("Reverse() mismatch (-want +got):\n%s", diff)
			}
		})
	}
}

func TestClone(t *testing.T) {
	tests := []struct {
		name  string
		slice []interface{}
	}{
		{
			name:  "Empty",
			slice: []interface{}{},
		},
		{
			name:  "Single Element",

		t.Errorf("DeleteFunc: want nil discarded elements, got %v, %v", mem[3], mem[4])
	}
	if mem[5] == nil {
		t.Errorf("DeleteFunc: want unchanged elements beyond original len, got nil")
	}
}

func TestClone(t *testing.T) {
	s1 := []int{1, 2, 3}
	s2 := Clone(s1)
	if !Equal(s1, s2) {
		t.Errorf("Clone(%v) = %v, want %v", s1, s2, s1)
	}
	s1[0] = 4
	want := []int{1, 2, 3}
	if !Equal(s2, want) {

	s.Close()
	var opErr *net.OpError
	if !errors.As(err, &opErr) || opErr.Err != error(alertUnknownCA) {
		t.Errorf("Got error: %s; expected: %s", err, error(alertUnknownCA))
	}
}

func TestClose(t *testing.T) {
	c, s := localPipe(t)
	go c.Close()

	err := Server(s, testConfig).Handshake()
	s.Close()
	if err != io.EOF {
		t.Errorf("Got error: %s; expected: %s", err, io.EOF)
	}
}

type Int64 int64

func (v Int64) Value() (driver.Value, error) {
	return v - 1, nil
}

func (f *Int64) Scan(v interface{}) error {
	y := v.(int64)
	*f = Int64(y + 1)
	return nil
}

func TestPluck(t *testing.T) {
	users := []*User{
		GetUser("pluck-user1", Config{}),
		GetUser("pluck-user2", Config{}),
		GetUser("pluck-user3", Config{}),
	}

	DB.Create(&users)

	var names []string

			name: funcNameTestFunc,
		},
	)
	// If we get here, the name did not cause a panic, which is how Funcs
	// reports an error.
	t.Errorf("%q succeeded incorrectly as function name", name)
}

func TestBlock(t *testing.T) {
	const (
		input   = `a({{block "inner" .}}bar({{.}})baz{{end}})b`
		want    = `a(bar(hello)baz)b`
		overlay = `{{define "inner"}}foo({{.}})bar{{end}}`
		want2   = `a(foo(goodbye)bar)b`
	)