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From 470f4cc7e63a96872463ab7a4a1c23689e32036b Mon Sep 17 00:00:00 2001
From: Eric Blake <eblake@redhat.com>
Date: Wed, 20 Aug 2014 16:40:11 +0200
Subject: [PATCH 08/11] qemu-iotests: Test BLOCK_JOB_READY event for 0Kb image active commit

Message-id: <1408552814-23031-5-git-send-email-eblake@redhat.com>
Patchwork-id: 60649
O-Subject: [qemu-kvm-rhev 7.0.z PATCH 4/7] qemu-iotests: Test BLOCK_JOB_READY event for 0Kb image active commit
Bugzilla: 1130603
RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
RH-Acked-by: Fam Zheng <famz@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>

From: Fam Zheng <famz@redhat.com>

There should be a BLOCK_JOB_READY event with active commit, regardless
of image length. Let's test the 0 length image case, and make sure it
goes through the ready->complete process.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 8b9a30ca5bc10545637429486836f3c206c39fab)

Conflicts:
	tests/qemu-iotests/040 - context, due to no common event infrastructure

Signed-off-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 tests/qemu-iotests/040     |   12 +++++++++---
 tests/qemu-iotests/040.out |    4 ++--
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/tests/qemu-iotests/040 b/tests/qemu-iotests/040
index f210fb7..cf80e0c 100755
--- a/tests/qemu-iotests/040
+++ b/tests/qemu-iotests/040
@@ -63,12 +63,13 @@ class ImageCommitTestCase(iotests.QMPTestCase):
             i = i + 512
         file.close()
 
-    def run_commit_test(self, top, base):
+    def run_commit_test(self, top, base, need_ready=False):
         self.assert_no_active_commit()
         result = self.vm.qmp('block-commit', device='drive0', top=top, base=base)
         self.assert_qmp(result, 'return', {})
 
         completed = False
+        ready = False
         while not completed:
             for event in self.vm.get_qmp_events(wait=True):
                 if event['event'] == 'BLOCK_JOB_COMPLETED':
@@ -76,8 +77,11 @@ class ImageCommitTestCase(iotests.QMPTestCase):
                     self.assert_qmp(event, 'data/device', 'drive0')
                     self.assert_qmp(event, 'data/offset', self.image_len)
                     self.assert_qmp(event, 'data/len', self.image_len)
+                    if need_ready:
+                        self.assertTrue(ready, "Expecting BLOCK_JOB_COMPLETED event")
                     completed = True
                 elif event['event'] == 'BLOCK_JOB_READY':
+                    ready = True
                     self.assert_qmp(event, 'data/type', 'commit')
                     self.assert_qmp(event, 'data/device', 'drive0')
                     self.assert_qmp(event, 'data/len', self.image_len)
@@ -91,7 +95,7 @@ class TestSingleDrive(ImageCommitTestCase):
     test_len = 1 * 1024 * 256
 
     def setUp(self):
-        self.create_image(backing_img, TestSingleDrive.image_len)
+        self.create_image(backing_img, self.image_len)
         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img)
         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img)
         qemu_io('-c', 'write -P 0xab 0 524288', backing_img)
@@ -133,7 +137,7 @@ class TestSingleDrive(ImageCommitTestCase):
         self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found')
 
     def test_top_is_active(self):
-        self.run_commit_test(test_img, backing_img)
+        self.run_commit_test(test_img, backing_img, need_ready=True)
         self.assertEqual(-1, qemu_io('-c', 'read -P 0xab 0 524288', backing_img).find("verification failed"))
         self.assertEqual(-1, qemu_io('-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed"))
 
@@ -265,6 +269,8 @@ class TestSetSpeed(ImageCommitTestCase):
 
         self.cancel_and_wait()
 
+class TestActiveZeroLengthImage(TestSingleDrive):
+    image_len = 0
 
 if __name__ == '__main__':
     iotests.main(supported_fmts=['qcow2', 'qed'])
diff --git a/tests/qemu-iotests/040.out b/tests/qemu-iotests/040.out
index b6f2576..42314e9 100644
--- a/tests/qemu-iotests/040.out
+++ b/tests/qemu-iotests/040.out
@@ -1,5 +1,5 @@
-................
+........................
 ----------------------------------------------------------------------
-Ran 16 tests
+Ran 24 tests
 
 OK
-- 
1.7.1