func tempFile(ctx context.Context, dir, prefix string, perm fs.FileMode) (f *os.File, err error) {
	for i := 0; i < 10000; i++ {
		name := filepath.Join(dir, prefix+strconv.Itoa(rand.Intn(1000000000))+".tmp")
		f, err = os.OpenFile(name, os.O_RDWR|os.O_CREATE|os.O_EXCL, perm)
		if os.IsExist(err) {
			if ctx.Err() != nil {
				return nil, ctx.Err()
			}
			continue
		}
		break
	}
	return

		expected      uint64
	}{
		{latestValue: uint64(0), previousValue: uint64(0), expected: uint64(0)},
		{latestValue: uint64(2000000000), previousValue: uint64(0), expected: uint64(200000000 * perfCounterUpdatePeriodSeconds)},
		{latestValue: uint64(5000000000), previousValue: uint64(2000000000), expected: uint64(300000000 * perfCounterUpdatePeriodSeconds)},
	}

	for _, tc := range testCases {
		p := perfCounterNodeStatsClient{}

}

func printUint16(i uint16) string {
	return printUint32(uint32(i))
}

func printUint32(i uint32) string {
	// Max value is 4294967295.
	buf := make([]byte, 10)
	for b, d := buf, uint32(1000000000); d > 0; d /= 10 {
		b[0] = byte(i/d%10 + '0')
		if b[0] == '0' && len(b) == len(buf) && len(buf) > 1 {
			buf = buf[1:]
		}
		b = b[1:]
		i %= d
	}
	return string(buf)
}

					Name:              "pc2",
					CreationTimestamp: metav1.Time{Time: time.Now().Add(-3e11)},
				},
				Value:         1000000000,
				GlobalDefault: true,
			},
			expected: []metav1.TableRow{{Cells: []interface{}{"pc2", int64(1000000000), bool(true), "5m"}}},
		},
	}

	for i, test := range tests {
		rows, err := printPriorityClass(&test.pc, printers.GenerateOptions{})

		},
		{
			name: "arbitrary node metrics",
			summary: &statsapi.Summary{
				Node: statsapi.NodeStats{
					CPU: &statsapi.CPUStats{
						Time:                 testTime,
						UsageCoreNanoSeconds: uint64Ptr(10000000000),
					},
					Memory: &statsapi.MemoryStats{
						Time:            testTime,
						WorkingSetBytes: uint64Ptr(1000),
					},
					Swap: &statsapi.SwapStats{
						Time:           testTime,

        client.checkMaxContentLength(responseData);

        responseData.setContentLength(1000000L);
        client.checkMaxContentLength(responseData);

        responseData.setContentLength(1000000000L);
        client.checkMaxContentLength(responseData);

        responseData.setContentLength(1000000000000L);
        client.checkMaxContentLength(responseData);
    }

    stopwatch.start();
    ticker.advance(5000000000L);
    assertEquals("5.000 s", stopwatch.toString());
    stopwatch.reset();
    stopwatch.start();
    ticker.advance((long) (1.5 * 60 * 1000000000L));
    assertEquals("1.500 min", stopwatch.toString());
    stopwatch.reset();
    stopwatch.start();
    ticker.advance((long) (2.5 * 60 * 60 * 1000000000L));
    assertEquals("2.500 h", stopwatch.toString());

	// default.
	if os.Getenv("GOWASIENABLERACYTEST") != "1" {
		t.Skip("skipping WASI test with unavoidable race condition")
	}
	var host string
	port := rand.Intn(10000) + 40000
	for attempts := 0; attempts < 10; attempts++ {
		host = fmt.Sprintf("127.0.0.1:%d", port)
		l, err := net.Listen("tcp", host)
		if err == nil {
			l.Close()
			break
		}
		port++
	}

		[]byte("192.0.2.1"),
		nil,
	},
	{
		IP{0, 0, 0, 0},
		"0.0.0.0",
		[]byte("0.0.0.0"),
		nil,
	},

	// IPv4-mapped IPv6 address
	{
		IP{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff, 192, 0, 2, 1},
		"192.0.2.1",
		[]byte("192.0.2.1"),
		nil,
	},
	{
		IP{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff, 0, 0, 0, 0},
		"0.0.0.0",
		[]byte("0.0.0.0"),
		nil,
	},

					Timestamp: 1,
					UsageCoreNanoSeconds: &runtimeapi.UInt64Value{
						Value: 10000000000,
					},
				},
			},
			cpuUsageCache: map[string]*cpuUsageRecord{
				"1": {
					stats: &runtimeapi.CpuUsage{
						Timestamp: 0,
						UsageCoreNanoSeconds: &runtimeapi.UInt64Value{
							Value: 10000000000,
						},
					},
				},
			},
			expected: &value0,
		},
		{