| /* |
| * Copyright (C) 2021 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.net.module.util |
| |
| import android.net.NetworkStats |
| import android.text.TextUtils |
| import androidx.test.filters.SmallTest |
| import androidx.test.runner.AndroidJUnit4 |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| import kotlin.test.assertEquals |
| import kotlin.test.assertFailsWith |
| import org.mockito.Mockito.doReturn |
| import org.mockito.Mockito.mock |
| |
| @RunWith(AndroidJUnit4::class) |
| @SmallTest |
| class NetworkStatsUtilsTest { |
| @Test |
| fun testMultiplySafeByRational() { |
| // Verify basic cases that the method equals to a * b / c. |
| assertEquals(3 * 5 / 2, NetworkStatsUtils.multiplySafeByRational(3, 5, 2)) |
| |
| // Verify input with zeros. |
| assertEquals(0 * 7 / 3, NetworkStatsUtils.multiplySafeByRational(0, 7, 3)) |
| assertEquals(7 * 0 / 3, NetworkStatsUtils.multiplySafeByRational(7, 0, 3)) |
| assertEquals(0 * 0 / 1, NetworkStatsUtils.multiplySafeByRational(0, 0, 1)) |
| assertEquals(0, NetworkStatsUtils.multiplySafeByRational(0, Long.MAX_VALUE, Long.MAX_VALUE)) |
| assertEquals(0, NetworkStatsUtils.multiplySafeByRational(Long.MAX_VALUE, 0, Long.MAX_VALUE)) |
| assertFailsWith<ArithmeticException> { |
| NetworkStatsUtils.multiplySafeByRational(7, 3, 0) |
| } |
| assertFailsWith<ArithmeticException> { |
| NetworkStatsUtils.multiplySafeByRational(0, 0, 0) |
| } |
| |
| // Verify cases where a * b overflows. |
| assertEquals(101, NetworkStatsUtils.multiplySafeByRational( |
| 101, Long.MAX_VALUE, Long.MAX_VALUE)) |
| assertEquals(721, NetworkStatsUtils.multiplySafeByRational( |
| Long.MAX_VALUE, 721, Long.MAX_VALUE)) |
| assertEquals(Long.MAX_VALUE, NetworkStatsUtils.multiplySafeByRational( |
| Long.MAX_VALUE, Long.MAX_VALUE, Long.MAX_VALUE)) |
| assertFailsWith<ArithmeticException> { |
| NetworkStatsUtils.multiplySafeByRational(Long.MAX_VALUE, Long.MAX_VALUE, 0) |
| } |
| } |
| |
| @Test |
| fun testConstrain() { |
| assertFailsWith<IllegalArgumentException> { |
| NetworkStatsUtils.constrain(5, 6, 3) // low > high |
| } |
| assertEquals(3, NetworkStatsUtils.constrain(5, 1, 3)) |
| assertEquals(3, NetworkStatsUtils.constrain(3, 1, 3)) |
| assertEquals(2, NetworkStatsUtils.constrain(2, 1, 3)) |
| assertEquals(1, NetworkStatsUtils.constrain(1, 1, 3)) |
| assertEquals(1, NetworkStatsUtils.constrain(0, 1, 3)) |
| |
| assertEquals(11, NetworkStatsUtils.constrain(15, 11, 11)) |
| assertEquals(11, NetworkStatsUtils.constrain(11, 11, 11)) |
| assertEquals(11, NetworkStatsUtils.constrain(1, 11, 11)) |
| } |
| |
| @Test |
| fun testBucketToEntry() { |
| val bucket = makeMockBucket(android.app.usage.NetworkStats.Bucket.UID_ALL, |
| android.app.usage.NetworkStats.Bucket.TAG_NONE, |
| android.app.usage.NetworkStats.Bucket.STATE_DEFAULT, |
| android.app.usage.NetworkStats.Bucket.METERED_YES, |
| android.app.usage.NetworkStats.Bucket.ROAMING_NO, |
| android.app.usage.NetworkStats.Bucket.DEFAULT_NETWORK_ALL, 1024, 8, 2048, 12) |
| val entry = NetworkStatsUtils.fromBucket(bucket) |
| val expectedEntry = NetworkStats.Entry(null /* IFACE_ALL */, NetworkStats.UID_ALL, |
| NetworkStats.SET_DEFAULT, NetworkStats.TAG_NONE, NetworkStats.METERED_YES, |
| NetworkStats.ROAMING_NO, NetworkStats.DEFAULT_NETWORK_ALL, 1024, 8, 2048, 12, |
| 0 /* operations */) |
| |
| // TODO: Use assertEquals once all downstreams accept null iface in |
| // NetworkStats.Entry#equals. |
| assertEntryEquals(expectedEntry, entry) |
| } |
| |
| private fun makeMockBucket( |
| uid: Int, |
| tag: Int, |
| state: Int, |
| metered: Int, |
| roaming: Int, |
| defaultNetwork: Int, |
| rxBytes: Long, |
| rxPackets: Long, |
| txBytes: Long, |
| txPackets: Long |
| ): android.app.usage.NetworkStats.Bucket { |
| val ret: android.app.usage.NetworkStats.Bucket = |
| mock(android.app.usage.NetworkStats.Bucket::class.java) |
| doReturn(uid).`when`(ret).getUid() |
| doReturn(tag).`when`(ret).getTag() |
| doReturn(state).`when`(ret).getState() |
| doReturn(metered).`when`(ret).getMetered() |
| doReturn(roaming).`when`(ret).getRoaming() |
| doReturn(defaultNetwork).`when`(ret).getDefaultNetworkStatus() |
| doReturn(rxBytes).`when`(ret).getRxBytes() |
| doReturn(rxPackets).`when`(ret).getRxPackets() |
| doReturn(txBytes).`when`(ret).getTxBytes() |
| doReturn(txPackets).`when`(ret).getTxPackets() |
| return ret |
| } |
| |
| /** |
| * Assert that the two {@link NetworkStats.Entry} are equals. |
| */ |
| private fun assertEntryEquals(left: NetworkStats.Entry, right: NetworkStats.Entry) { |
| TextUtils.equals(left.iface, right.iface) |
| assertEquals(left.uid, right.uid) |
| assertEquals(left.set, right.set) |
| assertEquals(left.tag, right.tag) |
| assertEquals(left.metered, right.metered) |
| assertEquals(left.roaming, right.roaming) |
| assertEquals(left.defaultNetwork, right.defaultNetwork) |
| assertEquals(left.rxBytes, right.rxBytes) |
| assertEquals(left.rxPackets, right.rxPackets) |
| assertEquals(left.txBytes, right.txBytes) |
| assertEquals(left.txPackets, right.txPackets) |
| assertEquals(left.operations, right.operations) |
| } |
| } |