a60293a5e9
Add utilities allowing to run lambdas with shell permissions, in kotlin and java tests. Bug: 168868607 Test: m Change-Id: Iaab38d498338b9e95d263789119cd0813983087d
77 lines
2.5 KiB
Kotlin
77 lines
2.5 KiB
Kotlin
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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@file:JvmName("TestPermissionUtil")
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package com.android.testutils
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import androidx.test.platform.app.InstrumentationRegistry
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import com.android.testutils.ExceptionUtils.ThrowingRunnable
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import com.android.testutils.ExceptionUtils.ThrowingSupplier
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/**
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* Run the specified [task] with the specified [permissions] obtained through shell
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* permission identity.
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*
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* Passing in an empty list of permissions can grant all shell permissions, but this is
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* discouraged as it also causes the process to temporarily lose non-shell permissions.
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*/
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fun <T> runAsShell(vararg permissions: String, task: () -> T): T {
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val autom = InstrumentationRegistry.getInstrumentation().uiAutomation
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autom.adoptShellPermissionIdentity(*permissions)
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try {
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return task()
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} finally {
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autom.dropShellPermissionIdentity()
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}
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}
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/**
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* Convenience overload of [runAsShell] that uses a [ThrowingSupplier] for Java callers, when
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* only one/two/three permissions are needed.
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*/
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@JvmOverloads
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fun <T> runAsShell(
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perm1: String,
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perm2: String = "",
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perm3: String = "",
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supplier: ThrowingSupplier<T>
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): T = runAsShell(*getNonEmptyVarargs(perm1, perm2, perm3)) { supplier.get() }
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/**
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* Convenience overload of [runAsShell] that uses a [ThrowingRunnable] for Java callers, when
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* only one/two/three permissions are needed.
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*/
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@JvmOverloads
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fun runAsShell(
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perm1: String,
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perm2: String = "",
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perm3: String = "",
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runnable: ThrowingRunnable
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): Unit = runAsShell(*getNonEmptyVarargs(perm1, perm2, perm3)) { runnable.run() }
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/**
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* Get an array containing the first consecutive non-empty arguments out of three arguments.
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*
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* The first argument is assumed to be non-empty.
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*/
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private fun getNonEmptyVarargs(arg1: String, arg2: String, arg3: String): Array<String> {
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return when {
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arg2 == "" -> arrayOf(arg1)
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arg3 == "" -> arrayOf(arg1, arg2)
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else -> arrayOf(arg1, arg2, arg3)
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}
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} |