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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-50649] Execute fixture teardown as part of Test::run</title>
                <link>https://jira.mongodb.org/browse/SERVER-50649</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Test fixtures&apos; teardown methods are currently executed as part the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/98d95e18f39540b33c491052901579b71ec430fc/src/mongo/unittest/unittest.cpp#L182&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;UnitTestEnvironment destructor&lt;/a&gt;, potentially resulting in a loss of exception infos: when an exception is thrown during teardown, the stack is unwinded before throwing. However, in case of additional exception being thrown by an unwind destructor, the program is terminated right away with the current backtrace.&lt;/p&gt;

&lt;p&gt;As a result, the original teardown exception is going to be hidden, making debug extremely difficult.&lt;/p&gt;

&lt;p&gt;Following the pattern implemented by &lt;a href=&quot;https://github.com/google/googletest/blob/master/googletest/src/gtest.cc#L2697&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;googletest::UnitTest&lt;/a&gt;, the teardown should be executed as part of &lt;a href=&quot;https://github.com/mongodb/mongo/blob/98d95e18f39540b33c491052901579b71ec430fc/src/mongo/unittest/unittest.cpp#L241&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Test::run&lt;/a&gt; .&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1458034">SERVER-50649</key>
            <summary>Execute fixture teardown as part of Test::run</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-servicearch">Backlog - Service Architecture</assignee>
                                    <reporter username="pierlauro.sciarelli@mongodb.com">Pierlauro Sciarelli</reporter>
                        <labels>
                            <label>servicearch-wfbf-day</label>
                    </labels>
                <created>Mon, 31 Aug 2020 19:20:40 +0000</created>
                <updated>Tue, 6 Dec 2022 02:10:21 +0000</updated>
                                                                            <component>Testing Infrastructure</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="4262708" author="JIRAUSER1262719" created="Tue, 21 Dec 2021 21:33:04 +0000"  >&lt;p&gt;We haven&#8217;t heard back from you in at least 1 year, so I&apos;m going to close this ticket. If this is still an issue for you, please provide additional information and we will reopen the ticket.&lt;/p&gt;</comment>
                            <comment id="3494193" author="billy.donahue" created="Tue, 17 Nov 2020 18:26:45 +0000"  >&lt;p&gt;&lt;a href=&quot;https://github.com/google/googletest/blob/master/googletest/docs/faq.md#should-i-use-the-constructordestructor-of-the-test-fixture-or-setupteardown-ctorvssetup&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/google/googletest/blob/master/googletest/docs/faq.md#should-i-use-the-constructordestructor-of-the-test-fixture-or-setupteardown-ctorvssetup&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3368613" author="billy.donahue" created="Mon, 31 Aug 2020 20:04:54 +0000"  >&lt;p&gt;(I&apos;ll add my follow-up comment from that thread though)&lt;/p&gt;

&lt;p&gt;I misunderstood the difference between &lt;tt&gt;UnitTest&lt;/tt&gt; and the tiny RAII class &lt;tt&gt;UnitTestEnvironment&lt;/tt&gt;. We actually do &lt;tt&gt;test-&amp;gt;setUp&lt;/tt&gt; and &lt;tt&gt;test-&amp;gt;tearDown&lt;/tt&gt; inside &lt;tt&gt;test-&amp;gt;run&lt;/tt&gt;, so that&apos;s good. The only problem is that we use this UnitTestEnvironment RAII object to implement the &lt;tt&gt;tearDown&lt;/tt&gt; call inevitably, and we don&apos;t have a path to handle the dtor-during-unwind case.&lt;/p&gt;

&lt;p&gt;It&apos;s unclear that &lt;tt&gt;tearDown&lt;/tt&gt; should run at all if the test throws. Googletest just runs a straightforward sequence that can be simplified as&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;setUp();&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;doTest();&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;tearDown();&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;
&lt;p&gt; (&lt;a href=&quot;https://github.com/google/googletest/blob/3af06fe1664d30f98de1e78c53a7087e842a2547/googletest/src/gtest.cc#L2679&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;code&lt;/a&gt;). They check as they go, to see if the test has marked itself as failed, but there&apos;s no exception catching here. If a C++ exception escapes any of those three stages, the sequence doesn&apos;t continue to make progress or force &lt;tt&gt;tearDown()&lt;/tt&gt; to happen during an unwind. Our framework does.&lt;/p&gt;</comment>
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