Initial PERF tests for autofill.

These tests render an activity that has 2 autofillable views (username and
password) and keep focusing between then, observing what happens in 4 scenarios:

1. No autofill service (baseline)
2. Autofill service returning no datasets.
3. Autofill service returning a dataset with username and password.
4. Autofill service returning a dataset with just username.

Because this change introduced a helper class to run shell commands without
needing the UiAutomator package, it also changed the MultiUserPerfTests to use
such helper.

Test: mmma -j ./frameworks/base/apct-tests/perftests/core/ &&  \
  adb install -r $OUT/data/app/CorePerfTests/CorePerfTests.apk && \
  adb shell am instrument -w -e class android.view.autofill.AutofillPerfTest \
  com.android.perftests.core/android.support.test.runner.AndroidJUnitRunner
Test: mmma -j ./frameworks/base/apct-tests/perftests/multiuser && \
  adb install -r $OUT/data/app/MultiUserPerfTests/MultiUserPerfTests.apk && \
  adb shell am instrument -w -e class android.multiuser.UserLifecycleTests \
  com.android.perftests.multiuser/android.support.test.runner.AndroidJUnitRunner

Bug: 38345816

Change-Id: Ie283dff8dd19c38ea829de9164b23aae2bfeb015

4 files changed, 267 insertions, 1 deletions

diff --git a/apct-tests/perftests/utils/Android.mk b/apct-tests/perftests/utils/Android.mk
index 55c13b087626..604f0adbe23e 100644
--- a/apct-tests/perftests/utils/Android.mk
+++ b/apct-tests/perftests/utils/Android.mk
@@ -1,7 +1,9 @@
 LOCAL_PATH := $(call my-dir)
 include $(CLEAR_VARS)
 
-LOCAL_STATIC_JAVA_LIBRARIES := android-support-test
+LOCAL_STATIC_JAVA_LIBRARIES := \
+    android-support-test \
+    androidx.annotation_annotation
 
 # Build all java files in the java subdirectory
 LOCAL_SRC_FILES := $(call all-subdir-java-files)
diff --git a/apct-tests/perftests/utils/src/android/perftests/utils/OneTimeSettingsListener.java b/apct-tests/perftests/utils/src/android/perftests/utils/OneTimeSettingsListener.java
new file mode 100644
index 000000000000..37af4c7f6181
--- /dev/null
+++ b/apct-tests/perftests/utils/src/android/perftests/utils/OneTimeSettingsListener.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2018 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 android.perftests.utils;
+
+import static android.perftests.utils.SettingsHelper.NAMESPACE_SECURE;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.database.ContentObserver;
+import android.net.Uri;
+import android.os.Handler;
+import android.os.Looper;
+import android.provider.Settings;
+
+import androidx.annotation.NonNull;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Helper used to block tests until a secure settings value has been updated.
+ */
+public final class OneTimeSettingsListener extends ContentObserver {
+    private final CountDownLatch mLatch = new CountDownLatch(1);
+    private final ContentResolver mResolver;
+    private final String mKey;
+    private final int mTimeoutMs;
+
+    public OneTimeSettingsListener(@NonNull Context context, @NonNull String namespace,
+            @NonNull String key, int timeoutMs) {
+        super(new Handler(Looper.getMainLooper()));
+        mKey = key;
+        mResolver = context.getContentResolver();
+        mTimeoutMs = timeoutMs;
+        final Uri uri;
+        switch (namespace) {
+            case NAMESPACE_SECURE:
+                uri = Settings.Secure.getUriFor(key);
+                break;
+            default:
+                throw new IllegalArgumentException("invalid namespace: " + namespace);
+        }
+        mResolver.registerContentObserver(uri, false, this);
+    }
+
+    @Override
+    public void onChange(boolean selfChange, Uri uri) {
+        mResolver.unregisterContentObserver(this);
+        mLatch.countDown();
+    }
+
+    /**
+     * Blocks for a few seconds until it's called, or throws an {@link IllegalStateException} if
+     * it isn't.
+     */
+    public void assertCalled() {
+        try {
+            final boolean updated = mLatch.await(mTimeoutMs, TimeUnit.MILLISECONDS);
+            if (!updated) {
+                throw new IllegalStateException(
+                        "Settings " + mKey + " not called in " + mTimeoutMs + "ms");
+            }
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new IllegalStateException("Interrupted", e);
+        }
+    }
+}
diff --git a/apct-tests/perftests/utils/src/android/perftests/utils/SettingsHelper.java b/apct-tests/perftests/utils/src/android/perftests/utils/SettingsHelper.java
new file mode 100644
index 000000000000..d7d1d6b7f817
--- /dev/null
+++ b/apct-tests/perftests/utils/src/android/perftests/utils/SettingsHelper.java
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2018 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 android.perftests.utils;
+
+import android.content.Context;
+import android.provider.Settings;
+import android.text.TextUtils;
+
+import java.util.Objects;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+/**
+ * Provides utilities to interact with the device's {@link Settings}.
+ */
+public final class SettingsHelper {
+
+    public static final String NAMESPACE_SECURE = "secure";
+
+    private static int DEFAULT_TIMEOUT_MS = 5000;
+
+    /**
+     * Uses a Shell command to "asynchronously" set the given preference, returning right away.
+     */
+    public static void set(@NonNull String namespace, @NonNull String key, @Nullable String value) {
+        if (value == null) {
+            delete(namespace, key);
+            return;
+        }
+        ShellHelper.runShellCommand("settings put %s %s %s default", namespace, key, value);
+    }
+
+    /**
+     * Uses a Shell command to "synchronously" set the given preference by registering a listener
+     * and wait until it's set.
+     */
+    public static void syncSet(@NonNull Context context, @NonNull String namespace,
+            @NonNull String key, @Nullable String value) {
+        if (value == null) {
+            syncDelete(context, namespace, key);
+            return;
+        }
+
+        String currentValue = get(namespace, key);
+        if (value.equals(currentValue)) {
+            // Already set, ignore
+            return;
+        }
+
+        OneTimeSettingsListener observer = new OneTimeSettingsListener(context, namespace, key,
+                DEFAULT_TIMEOUT_MS);
+        set(namespace, key, value);
+        observer.assertCalled();
+        assertNewValue(namespace, key, value);
+    }
+
+    /**
+     * Uses a Shell command to "asynchronously" delete the given preference, returning right away.
+     */
+    public static void delete(@NonNull String namespace, @NonNull String key) {
+        ShellHelper.runShellCommand("settings delete %s %s", namespace, key);
+    }
+
+    /**
+     * Uses a Shell command to "synchronously" delete the given preference by registering a listener
+     * and wait until it's called.
+     */
+    public static void syncDelete(@NonNull Context context, @NonNull String namespace,
+            @NonNull String key) {
+        String currentValue = get(namespace, key);
+        if (currentValue == null || currentValue.equals("null")) {
+            // Already set, ignore
+            return;
+        }
+
+        OneTimeSettingsListener observer = new OneTimeSettingsListener(context, namespace, key,
+                DEFAULT_TIMEOUT_MS);
+        delete(namespace, key);
+        observer.assertCalled();
+        assertNewValue(namespace, key, "null");
+    }
+
+    /**
+     * Gets the value of a given preference using Shell command.
+     */
+    @NonNull
+    public static String get(@NonNull String namespace, @NonNull String key) {
+        return ShellHelper.runShellCommand("settings get %s %s", namespace, key);
+    }
+
+    private static void assertNewValue(@NonNull String namespace, @NonNull String key,
+            @Nullable String expectedValue) {
+        String actualValue = get(namespace, key);
+        if (!Objects.equals(actualValue, expectedValue)) {
+            throw new AssertionError("invalid value for " + namespace + ":" + key + ": expected '"
+                    + actualValue + "' , got '" + expectedValue + "'");
+        }
+    }
+
+    private SettingsHelper() {
+        throw new UnsupportedOperationException("contain static methods only");
+    }
+}
diff --git a/apct-tests/perftests/utils/src/android/perftests/utils/ShellHelper.java b/apct-tests/perftests/utils/src/android/perftests/utils/ShellHelper.java
new file mode 100644
index 000000000000..cae87fb9c6e4
--- /dev/null
+++ b/apct-tests/perftests/utils/src/android/perftests/utils/ShellHelper.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2018 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 android.perftests.utils;
+
+import android.app.UiAutomation;
+import android.os.ParcelFileDescriptor;
+import android.support.test.InstrumentationRegistry;
+import android.text.TextUtils;
+import android.util.AndroidRuntimeException;
+import android.util.Log;
+
+import java.io.FileInputStream;
+
+import androidx.annotation.NonNull;
+
+/**
+ * Provides Shell-based utilities such as running a command.
+ */
+public final class ShellHelper {
+
+    /**
+     * Runs a Shell command, returning a trimmed response.
+     */
+    @NonNull
+    public static String runShellCommand(@NonNull String template, Object...args) {
+        String command = String.format(template, args);
+        UiAutomation automan = InstrumentationRegistry.getInstrumentation()
+                .getUiAutomation();
+        ParcelFileDescriptor pfd = automan.executeShellCommand(command);
+        byte[] buf = new byte[512];
+        int bytesRead;
+        try(FileInputStream fis = new ParcelFileDescriptor.AutoCloseInputStream(pfd)) {
+            StringBuilder stdout = new StringBuilder();
+            while ((bytesRead = fis.read(buf)) != -1) {
+                stdout.append(new String(buf, 0, bytesRead));
+            }
+            String result = stdout.toString();
+            return TextUtils.isEmpty(result) ? "" : result.trim();
+        } catch (Exception e) {
+            throw new AndroidRuntimeException("Command '" + command + "' failed: ", e);
+        } finally {
+            // Must disconnect UI automation after every call, otherwise its accessibility service
+            // skews the performance tests.
+            automan.destroy();
+        }
+    }
+
+    private ShellHelper() {
+        throw new UnsupportedOperationException("contain static methods only");
+    }
+}