| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.testutils |
| |
| import android.net.netstats.provider.NetworkStatsProvider |
| import com.android.net.module.util.ArrayTrackRecord |
| import kotlin.test.assertEquals |
| import kotlin.test.assertTrue |
| import kotlin.test.fail |
| |
| private const val DEFAULT_TIMEOUT_MS = 200L |
| |
| open class TestableNetworkStatsProvider( |
| val defaultTimeoutMs: Long = DEFAULT_TIMEOUT_MS |
| ) : NetworkStatsProvider() { |
| sealed class CallbackType { |
| data class OnRequestStatsUpdate(val token: Int) : CallbackType() |
| data class OnSetLimit(val iface: String?, val quotaBytes: Long) : CallbackType() |
| data class OnSetAlert(val quotaBytes: Long) : CallbackType() |
| } |
| |
| val history = ArrayTrackRecord<CallbackType>().newReadHead() |
| // See ReadHead#mark |
| val mark get() = history.mark |
| |
| override fun onRequestStatsUpdate(token: Int) { |
| history.add(CallbackType.OnRequestStatsUpdate(token)) |
| } |
| |
| override fun onSetLimit(iface: String, quotaBytes: Long) { |
| history.add(CallbackType.OnSetLimit(iface, quotaBytes)) |
| } |
| |
| override fun onSetAlert(quotaBytes: Long) { |
| history.add(CallbackType.OnSetAlert(quotaBytes)) |
| } |
| |
| fun expectOnRequestStatsUpdate(token: Int, timeout: Long = defaultTimeoutMs) { |
| assertEquals(CallbackType.OnRequestStatsUpdate(token), history.poll(timeout)) |
| } |
| |
| fun expectOnSetLimit(iface: String?, quotaBytes: Long, timeout: Long = defaultTimeoutMs) { |
| assertEquals(CallbackType.OnSetLimit(iface, quotaBytes), history.poll(timeout)) |
| } |
| |
| fun expectOnSetAlert(quotaBytes: Long, timeout: Long = defaultTimeoutMs) { |
| assertEquals(CallbackType.OnSetAlert(quotaBytes), history.poll(timeout)) |
| } |
| |
| fun pollForNextCallback(timeout: Long = defaultTimeoutMs) = |
| history.poll(timeout) ?: fail("Did not receive callback after ${timeout}ms") |
| |
| inline fun <reified T : CallbackType> expectCallback( |
| timeout: Long = defaultTimeoutMs, |
| predicate: (T) -> Boolean = { true } |
| ): T { |
| return pollForNextCallback(timeout).also { assertTrue(it is T && predicate(it)) } as T |
| } |
| |
| // Expects a callback of the specified type matching the predicate within the timeout. |
| // Any callback that doesn't match the predicate will be skipped. Fails only if |
| // no matching callback is received within the timeout. |
| // TODO : factorize the code for this with the identical call in TestableNetworkCallback. |
| // There should be a common superclass doing this generically. |
| // TODO : have a better error message to have this fail. Right now the failure when no |
| // matching callback arrives comes from the casting to a non-nullable T. |
| // TODO : in fact, completely removing this method and have clients use |
| // history.poll(timeout, index, predicate) directly might be simpler. |
| inline fun <reified T : CallbackType> eventuallyExpect( |
| timeoutMs: Long = defaultTimeoutMs, |
| from: Int = mark, |
| crossinline predicate: (T) -> Boolean = { true } |
| ) = history.poll(timeoutMs, from) { it is T && predicate(it) } as T |
| |
| fun drainCallbacks() { |
| history.mark = history.size |
| } |
| |
| @JvmOverloads |
| fun assertNoCallback(timeout: Long = defaultTimeoutMs) { |
| val cb = history.poll(timeout) |
| cb?.let { fail("Expected no callback but got $cb") } |
| } |
| } |