Merge "Allow use of shared bpf headers by recovery"
diff --git a/staticlibs/testutils/host/com/android/testutils/DisableConfigSyncTargetPreparer.kt b/staticlibs/testutils/host/com/android/testutils/DisableConfigSyncTargetPreparer.kt
new file mode 100644
index 0000000..63f05a6
--- /dev/null
+++ b/staticlibs/testutils/host/com/android/testutils/DisableConfigSyncTargetPreparer.kt
@@ -0,0 +1,61 @@
+/*
+ * 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.testutils
+
+import com.android.tradefed.invoker.TestInformation
+import com.android.tradefed.targetprep.BaseTargetPreparer
+
+/**
+ * A target preparer that disables DeviceConfig sync while running a test.
+ *
+ * Without this preparer, tests that rely on stable values of DeviceConfig flags, for example to
+ * test behavior when setting the flag and resetting it afterwards, may flake as the flags may
+ * be synced with remote servers during the test.
+ */
+class DisableConfigSyncTargetPreparer : BaseTargetPreparer() {
+ private var syncDisabledOriginalValue = "none"
+
+ override fun setUp(testInfo: TestInformation) {
+ if (isDisabled) return
+ syncDisabledOriginalValue = readSyncDisabledOriginalValue(testInfo)
+
+ // The setter is the same in current and legacy S versions
+ testInfo.exec("cmd device_config set_sync_disabled_for_tests until_reboot")
+ }
+
+ override fun tearDown(testInfo: TestInformation, e: Throwable?) {
+ if (isTearDownDisabled) return
+ // May fail harmlessly if called before S
+ testInfo.exec("cmd device_config set_sync_disabled_for_tests $syncDisabledOriginalValue")
+ }
+
+ private fun readSyncDisabledOriginalValue(testInfo: TestInformation): String {
+ return when (val reply = testInfo.exec("cmd device_config get_sync_disabled_for_tests")) {
+ "until_reboot", "persistent", "none" -> reply
+ // Reply does not match known modes, try legacy commands used on S and some T builds
+ else -> when (testInfo.exec("cmd device_config is_sync_disabled_for_tests")) {
+ // The legacy command just said "true" for "until_reboot" or "persistent". There is
+ // no way to know which one was used, so just reset to "until_reboot" to be
+ // conservative.
+ "true" -> "until_reboot"
+ else -> "none"
+ }
+ }
+ }
+}
+
+private fun TestInformation.exec(cmd: String) = this.device.executeShellCommand(cmd)
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