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| 24 |
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| 25 | <div id="content">
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| 26 |
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| 27 | <h3>Assembly Isolation</h3>
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| 28 |
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| 29 | <p>NUnit isolates test assemblies from its own code and from one another
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| 30 | by use of separate AppDomains and/or Processes.
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| 31 |
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| 32 | <p>By default, NUnit loads a test assembly into a separate <b>AppDomain</b>,
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| 33 | while its own code runs in the primary <b>AppDomain</b>.
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| 34 |
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| 35 | <p>When multiple assemblies are run at the same time, NUnit loads them differently
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| 36 | depending on how they were specified. For assemblies that are part of an
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| 37 | NUnit project, then a single <b>AppDomain</b> is used. If the assemblies
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| 38 | were specified on the console runner command line, then a separate
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| 39 | <b>AppDomain</b> is used for each of them.
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| 40 |
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| 41 | <p>If greater separation is desired, test assemblies may be loaded into
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| 42 | a separate <b>Process</b> or into multiple processes. This is done
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| 43 | automatically by NUnit in the case where the tests are to be run under
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| 44 | a different runtime from the one that NUnit is currently using. Tests
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| 45 | running in a separate process are executed under the control of the
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| 46 | <a href="nunit-agent.html">nunit-agent</a> program.
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| 47 |
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| 48 | <h3>Controlling Isolation</h3>
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| 49 |
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| 50 | <p>Beyond the NUnit default behavior, the user may control the level of isolation
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| 51 | through the command line or through NUnit's general settings. Process and AppDomain
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| 52 | isolation may also be specified as part of the settings of an NUnit project.
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| 53 |
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| 54 | <h4>Command Line</h4>
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| 55 |
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| 56 | <p>Assembly Isolation may be specified on the console runner commandline using
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| 57 | the <b>/process</b> and <b>/domain</b> options. See
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| 58 | <a href="consoleCommandLine.html">NUnit-Console Command Line Options</a> for more information.
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| 59 |
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| 60 | <h4>General Settings</h4>
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| 61 |
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| 62 | <p>The built-in NUnit defaults may be overridden using the <b>Assembly Isolation</b>
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| 63 | panel of the NUnit <b>Settings Dialog</b>. Settings made here are saved and become
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| 64 | the new default values for all executions of NUnit until changed. For more info,
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| 65 | see the <a href="settingsDialog.html">Settings Dialog</a> page.
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| 66 |
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| 67 | <h4>Project Settings</h4>
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| 68 |
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| 69 | <p>Isolation settings may be specified for an individual NUnit project using the
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| 70 | <a href="projectEditor.html">Project Editor</a>.
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