commit 42a90bf551217c6dc5eb9e8b32ee03bf498d0e9d
author Alper Gundogdu <agun@google.com> Wed Oct 19 14:19:35 2016 +0100
committer Alper Gundogdu <agun@google.com> Wed Oct 19 13:38:58 2016 +0000
tree ab1294b87eea9a6f7988ea659d328059448b523f
parent 5969288ab6cf8cb90a70d458fe86d771ceac6094

RandomRWTest now checks for usable space before running
Bug: 30151120
Test: cts-tradefed run cts -m CtsFileSystemTestCases -t android.filesystem.cts.RandomRWTest#testRandomUpdate

Change-Id: I655b1b56f0f708d4d15e1b7330483e7cd50047ed

tests/filesystem/src/android/filesystem/cts/FileUtil.java

diff --git a/tests/filesystem/src/android/filesystem/cts/FileUtil.java b/tests/filesystem/src/android/filesystem/cts/FileUtil.java
index fc8eee0..8149105 100755
--- a/tests/filesystem/src/android/filesystem/cts/FileUtil.java
+++ b/tests/filesystem/src/android/filesystem/cts/FileUtil.java
@@ -41,6 +41,8 @@
     private static final String TAG = "FileUtil";
     private static final Random mRandom = new Random(0);
     private static long mFileId = 0;
+
+    public static final int BUFFER_SIZE = 10 * 1024 * 1024;
     /**
      * create array with different data per each call
      *
@@ -140,7 +142,6 @@
      */
     public static File createNewFilledFile(Context context, String dirName, long length)
             throws IOException {
-        final int BUFFER_SIZE = 10 * 1024 * 1024;
         File file = createNewFile(context, dirName);
         FileOutputStream out = new FileOutputStream(file);
         byte[] data = generateRandomData(BUFFER_SIZE);

tests/filesystem/src/android/filesystem/cts/RandomRWTest.java

diff --git a/tests/filesystem/src/android/filesystem/cts/RandomRWTest.java b/tests/filesystem/src/android/filesystem/cts/RandomRWTest.java
index a2df743..7b97f8f 100644
--- a/tests/filesystem/src/android/filesystem/cts/RandomRWTest.java
+++ b/tests/filesystem/src/android/filesystem/cts/RandomRWTest.java
@@ -17,7 +17,7 @@
 package android.filesystem.cts;
 
 import android.cts.util.CtsAndroidTestCase;
-
+import android.os.Environment;
 import com.android.compatibility.common.util.CddTest;
 import com.android.compatibility.common.util.DeviceReportLog;
 
@@ -51,11 +51,17 @@
     @CddTest(requirement="8.2")
     public void testRandomUpdate() throws Exception {
         final int WRITE_BUFFER_SIZE = 4 * 1024;
-        final long fileSize = 256 * 1024 * 1024;
+        final long usableSpace = Environment.getDataDirectory().getUsableSpace();
+        long fileSize = 256 * 1024 * 1024;
+        while (usableSpace < fileSize) {
+            fileSize = fileSize / 2;
+        }
         String streamName = "test_random_update";
         DeviceReportLog report = new DeviceReportLog(REPORT_LOG_NAME, streamName);
-        FileUtil.doRandomWriteTest(getContext(), DIR_RANDOM_WR, report, fileSize,
+        if (fileSize > FileUtil.BUFFER_SIZE) {
+            FileUtil.doRandomWriteTest(getContext(), DIR_RANDOM_WR, report, fileSize,
                 WRITE_BUFFER_SIZE);
+        }
         report.submit(getInstrumentation());
     }
 }