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-rw-r--r--meta/lib/oeqa/selftest/wic.py13
1 files changed, 13 insertions, 0 deletions
diff --git a/meta/lib/oeqa/selftest/wic.py b/meta/lib/oeqa/selftest/wic.py
index a569fbf747..dd3207528e 100644
--- a/meta/lib/oeqa/selftest/wic.py
+++ b/meta/lib/oeqa/selftest/wic.py
@@ -276,3 +276,16 @@ class Wic(oeSelfTest):
status, output = qemu.run_serial(command)
self.assertEqual(1, status, 'Failed to run command "%s": %s' % (command, output))
self.assertEqual(output, '/dev/root /\r\n/dev/vda3 /mnt')
+
+ def test_sparseness(self):
+ """Test that assembled images are sparse; apparent size > disk usage"""
+ self.assertEqual(0, runCmd("wic create directdisk "
+ "--image-name core-image-minimal").status)
+ images = glob(self.resultdir + "directdisk-*.direct")
+ self.assertEqual(1, len(images))
+
+ imagestat = os.stat(images.pop())
+ # st_blocks is the "number of 512-byte blocks allocated for file"
+ used = imagestat.st_blocks*512
+ apparent = imagestat.st_size
+ self.assertLess(used, apparent)