From patchwork Mon Apr 25 14:08:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hanna Czenczek X-Patchwork-Id: 12825840 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4BD49C433EF for ; Mon, 25 Apr 2022 14:28:30 +0000 (UTC) Received: from localhost ([::1]:35844 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nizhV-00077w-EA for qemu-devel@archiver.kernel.org; Mon, 25 Apr 2022 10:28:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60686) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nizOQ-0005Xe-3G for qemu-devel@nongnu.org; Mon, 25 Apr 2022 10:08:46 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:22705) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nizOO-000202-FY for qemu-devel@nongnu.org; Mon, 25 Apr 2022 10:08:45 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1650895723; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Nl0k0bgIqD+SOODQoG9aoJRqwQ47e6wxfK2Xg054c1M=; b=QldRSko586goCSgEhIo83uDPQW9475V8uK8gqajzb/yicKUpZmLau1i8FsmgHVoBX8mUyX I/NMO8Yxf590a7F4M1fJWQG03XikaXbL0NwFNYC31iG2CV8sGUcPjR8QFVOEN4F9ZhYEHN sPFtsrYA/XcSi/8zTS9M8ngcPUs89gk= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-634-5VykMWTWNhKt_YXzA5HHCQ-1; Mon, 25 Apr 2022 10:08:38 -0400 X-MC-Unique: 5VykMWTWNhKt_YXzA5HHCQ-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 1B2D638337F4; Mon, 25 Apr 2022 14:08:38 +0000 (UTC) Received: from localhost (unknown [10.39.194.198]) by smtp.corp.redhat.com (Postfix) with ESMTPS id C8DEA40C1241; Mon, 25 Apr 2022 14:08:37 +0000 (UTC) From: Hanna Reitz To: qemu-block@nongnu.org Subject: [PULL 09/14] iotests/migration-permissions: use assertRaises() for qemu_io() negative test Date: Mon, 25 Apr 2022 16:08:16 +0200 Message-Id: <20220425140821.957511-10-hreitz@redhat.com> In-Reply-To: <20220425140821.957511-1-hreitz@redhat.com> References: <20220425140821.957511-1-hreitz@redhat.com> MIME-Version: 1.0 Content-type: text/plain X-Scanned-By: MIMEDefang 2.84 on 10.11.54.2 Received-SPF: pass client-ip=170.10.133.124; envelope-from=hreitz@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Hanna Reitz , Richard Henderson , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: John Snow Modify this test to use assertRaises for its negative testing of qemu_io. If the exception raised does not match the one we tell it to expect, we get *that* exception unhandled. If we get no exception, we get a unittest assertion failure and the provided emsg printed to screen. If we get the CalledProcessError exception but the output is not what we expect, we re-raise the original CalledProcessError. Tidy. (Note: Yes, you can reference "with" objects after that block ends; it just means that ctx.__exit__(...) will have been called on it. It does not *actually* go out of scope. unittests expects you to want to inspect the Exception object, so they leave it defined post-exit.) Signed-off-by: John Snow Reviewed-by: Eric Blake Tested-by: Eric Blake Reviewed-by: Hanna Reitz Message-Id: <20220418211504.943969-9-jsnow@redhat.com> Signed-off-by: Hanna Reitz --- .../qemu-iotests/tests/migration-permissions | 28 +++++++++---------- 1 file changed, 14 insertions(+), 14 deletions(-) diff --git a/tests/qemu-iotests/tests/migration-permissions b/tests/qemu-iotests/tests/migration-permissions index c7afb1bd2c..4e1da369c9 100755 --- a/tests/qemu-iotests/tests/migration-permissions +++ b/tests/qemu-iotests/tests/migration-permissions @@ -18,6 +18,8 @@ # import os +from subprocess import CalledProcessError + import iotests from iotests import imgfmt, qemu_img_create, qemu_io @@ -69,13 +71,12 @@ class TestMigrationPermissions(iotests.QMPTestCase): def test_post_migration_permissions(self): # Try to access the image R/W, which should fail because virtio-blk # has not been configured with share-rw=on - log = qemu_io('-f', imgfmt, '-c', 'quit', test_img, check=False).stdout - if not log.strip(): - print('ERROR (pre-migration): qemu-io should not be able to ' - 'access this image, but it reported no error') - else: - # This is the expected output - assert 'Is another process using the image' in log + emsg = ('ERROR (pre-migration): qemu-io should not be able to ' + 'access this image, but it reported no error') + with self.assertRaises(CalledProcessError, msg=emsg) as ctx: + qemu_io('-f', imgfmt, '-c', 'quit', test_img) + if 'Is another process using the image' not in ctx.exception.stdout: + raise ctx.exception # Now migrate the VM self.vm_s.qmp('migrate', uri=f'unix:{mig_sock}') @@ -84,13 +85,12 @@ class TestMigrationPermissions(iotests.QMPTestCase): # Try the same qemu-io access again, verifying that the WRITE # permission remains unshared - log = qemu_io('-f', imgfmt, '-c', 'quit', test_img, check=False).stdout - if not log.strip(): - print('ERROR (post-migration): qemu-io should not be able to ' - 'access this image, but it reported no error') - else: - # This is the expected output - assert 'Is another process using the image' in log + emsg = ('ERROR (post-migration): qemu-io should not be able to ' + 'access this image, but it reported no error') + with self.assertRaises(CalledProcessError, msg=emsg) as ctx: + qemu_io('-f', imgfmt, '-c', 'quit', test_img) + if 'Is another process using the image' not in ctx.exception.stdout: + raise ctx.exception if __name__ == '__main__':