1 files changed, 135 insertions, 0 deletions
diff --git a/sdksandbox/tests/testutils/src/android/app/sdksandbox/hosttestutils/AdoptableStorageUtils.java b/sdksandbox/tests/testutils/src/android/app/sdksandbox/hosttestutils/AdoptableStorageUtils.java
new file mode 100644
index 0000000000..7e62875f01
--- /dev/null
+++ b/sdksandbox/tests/testutils/src/android/app/sdksandbox/hosttestutils/AdoptableStorageUtils.java
@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) 2022 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.app.sdksandbox.hosttestutils;
+
+import com.android.tradefed.log.LogUtil;
+import com.android.tradefed.testtype.junit4.BaseHostJUnit4Test;
+
+import java.util.Arrays;
+
+public class AdoptableStorageUtils {
+
+    private final BaseHostJUnit4Test mTest;
+
+    private String mDiskId;
+
+    public AdoptableStorageUtils(BaseHostJUnit4Test test) {
+        mTest = test;
+    }
+
+    public boolean isAdoptableStorageSupported() throws Exception {
+        boolean hasFeature =
+                mTest.getDevice().hasFeature("feature:android.software.adoptable_storage");
+        boolean hasFstab =
+                Boolean.parseBoolean(
+                        mTest.getDevice().executeShellCommand("sm has-adoptable").trim());
+        return hasFeature && hasFstab;
+    }
+
+    // Creates a new volume in adoptable storage and returns its uuid
+    public String createNewVolume() throws Exception {
+        mDiskId = getAdoptionDisk();
+        assertEmpty(mTest.getDevice().executeShellCommand("sm partition " + mDiskId + " private"));
+        final LocalVolumeInfo vol = getAdoptionVolume();
+        return vol.uuid;
+    }
+
+    // Destroy the volume created before
+    public void cleanUpVolume() throws Exception {
+        mTest.getDevice().executeShellCommand("sm partition " + mDiskId + " public");
+        mTest.getDevice().executeShellCommand("sm forget all");
+    }
+
+    private String getAdoptionDisk() throws Exception {
+        // In the case where we run multiple test we cleanup the state of the device. This
+        // results in the execution of sm forget all which causes the MountService to "reset"
+        // all its knowledge about available drives. This can cause the adoptable drive to
+        // become temporarily unavailable.
+        int attempt = 0;
+        String disks = mTest.getDevice().executeShellCommand("sm list-disks adoptable");
+        while ((disks == null || disks.isEmpty()) && attempt++ < 15) {
+            Thread.sleep(1000);
+            disks = mTest.getDevice().executeShellCommand("sm list-disks adoptable");
+        }
+
+        if (disks == null || disks.isEmpty()) {
+            throw new AssertionError(
+                    "Devices that claim to support adoptable storage must have "
+                            + "adoptable media inserted during CTS to verify correct behavior");
+        }
+        return disks.split("\n")[0].trim();
+    }
+
+    private static void assertEmpty(String str) {
+        if (str != null && str.trim().length() > 0) {
+            throw new AssertionError("Expected empty string but found " + str);
+        }
+    }
+
+    private static class LocalVolumeInfo {
+        public String volId;
+        public String state;
+        public String uuid;
+
+        LocalVolumeInfo(String line) {
+            final String[] split = line.split(" ");
+            volId = split[0];
+            state = split[1];
+            uuid = split[2];
+        }
+    }
+
+    private LocalVolumeInfo getAdoptionVolume() throws Exception {
+        String[] lines = null;
+        int attempt = 0;
+        int mounted_count = 0;
+        while (attempt++ < 15) {
+            lines = mTest.getDevice().executeShellCommand("sm list-volumes private").split("\n");
+            LogUtil.CLog.w("getAdoptionVolume(): " + Arrays.toString(lines));
+            for (String line : lines) {
+                final LocalVolumeInfo info = new LocalVolumeInfo(line.trim());
+                if (!"private".equals(info.volId)) {
+                    if ("mounted".equals(info.state)) {
+                        // make sure the storage is mounted and stable for a while
+                        mounted_count++;
+                        attempt--;
+                        if (mounted_count >= 3) {
+                            return waitForVolumeReady(info);
+                        }
+                    } else {
+                        mounted_count = 0;
+                    }
+                }
+            }
+            Thread.sleep(1000);
+        }
+        throw new AssertionError("Expected private volume; found " + Arrays.toString(lines));
+    }
+
+    private LocalVolumeInfo waitForVolumeReady(LocalVolumeInfo vol) throws Exception {
+        int attempt = 0;
+        while (attempt++ < 15) {
+            if (mTest.getDevice()
+                    .executeShellCommand("dumpsys package volumes")
+                    .contains(vol.volId)) {
+                return vol;
+            }
+            Thread.sleep(1000);
+        }
+        throw new AssertionError("Volume not ready " + vol.volId);
+    }
+}