Unit test not reading App.config

问题

On a build machine running Visual Studio Pro 2013 12.0.21005.1, I have a unit test project that fails to read its App.config file properly (if at all). The following returns null:

System.Configuration.ConfigurationManager.GetSection( "loggingConfiguration" )

It isn't just the logging configuration section that fails to get read; any attempt to read any section results in a null value.

On my laptop running Visual Studio Pro 2013 12.0.31101.00 Update 4, the unit test project reads the App.config just fine, and the call above returns the expected object.

My XML looks like this:

<?xml version="1.0"?>
<configuration>
  <configSections>
    <section name="loggingConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.LoggingSettings, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="true" />
    <section name="exceptionHandling" type="Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.Configuration.ExceptionHandlingSettings, Microsoft.Practices.EnterpriseLibrary.ExceptionHandling, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="true" />
    <section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" />
    <section name="dataCacheClient" type="Microsoft.ApplicationServer.Caching.DataCacheClientSection, Microsoft.ApplicationServer.Caching.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="true" />
  </configSections>

<loggingConfiguration name="" tracingEnabled="false" defaultCategory="Verbose" logWarningsWhenNoCategoriesMatch="false">
    <listeners>
      <add name="Event Log Listener" type="Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.FormattedEventLogTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.FormattedEventLogTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" source="MyCompany" formatter="Text Formatter" log="Application" />
      <add name="Rolling Flat File Listener" type="Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.RollingFlatFileTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.RollingFlatFileTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" fileName="Service.log" formatter="Text Formatter" rollFileExistsBehavior="Increment" rollInterval="Day" />
      <add listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.CustomTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" type="MyCompany.Core.Instrumentation.ConsoleTraceListener, MyCompany.Core" formatter="Debug Formatter" traceOutputOptions="None" name="Debug Console Listener" />
    </listeners>
    <formatters>
      <add type="Microsoft.Practices.EnterpriseLibrary.Logging.Formatters.TextFormatter, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" template="Timestamp: {timestamp(local)}{newline}&#xA;Title: {title}{newline}&#xA;Message: {message}{newline}&#xA;Severity: {severity}{newline}&#xA;Priority: {priority}{newline}&#xA;Categories: {category}{newline}&#xA;EventId: {eventid}{newline}&#xA;Machine: {localMachine}{newline}&#xA;ProcessId: {localProcessId}{newline}&#xA;Process Name: {localProcessName}{newline}&#xA;Win32 ThreadId:{win32ThreadId}{newline}&#xA;Thread Name: {threadName}{newline}&#xA;Extended Properties: {dictionary({key} - {value}{newline})}" name="Text Formatter" />
      <add type="Microsoft.Practices.EnterpriseLibrary.Logging.Formatters.TextFormatter, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" template="{timestamp(local:FixedFormatUSDate)} {timestamp(local:FixedFormatTime)} [{severity} P{priority} T{win32ThreadId}/'{threadName}']   {title}: {message} [{category}]" name="Debug Formatter" />
    </formatters>
    <logFilters>
      <add type="Microsoft.Practices.EnterpriseLibrary.Logging.Filters.CategoryFilter, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" categoryFilterMode="AllowAllExceptDenied" name="Category Filter">
        <categoryFilters>
        </categoryFilters>
      </add>
      <add type="Microsoft.Practices.EnterpriseLibrary.Logging.Filters.PriorityFilter, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" maximumPriority="4" name="Priority Filter" />
    </logFilters>
    <categorySources>
      <add switchValue="Information" name="MyCompany.Core.Configuration">
        <listeners>
          <add name="Event Log Listener" />
          <add name="Rolling Flat File Listener" />
          <add name="Debug Console Listener" />
        </listeners>
      </add>
      <add switchValue="All" name="ServiceExceptionPolicy">
        <listeners>
          <add name="Event Log Listener" />
          <add name="Rolling Flat File Listener" />
          <add name="Debug Console Listener" />
        </listeners>
      </add>
      <add switchValue="All" name="Critical">
        <listeners>
          <add name="Event Log Listener" />
          <add name="Rolling Flat File Listener" />
          <add name="Debug Console Listener" />
        </listeners>
      </add>
      <add switchValue="All" name="Error">
        <listeners>
          <add name="Event Log Listener" />
          <add name="Rolling Flat File Listener" />
          <add name="Debug Console Listener" />
        </listeners>
      </add>
      <add switchValue="All" name="Warning">
        <listeners>
          <add name="Event Log Listener" />
          <add name="Rolling Flat File Listener" />
          <add name="Debug Console Listener" />
        </listeners>
      </add>
      <add switchValue="All" name="Information">
        <listeners>
          <add name="Event Log Listener" />
          <add name="Rolling Flat File Listener" />
          <add name="Debug Console Listener" />
        </listeners>
      </add>
      <add switchValue="All" name="Verbose">
        <listeners>
          <add name="Rolling Flat File Listener" />
          <add name="Debug Console Listener" />
        </listeners>
      </add>
    </categorySources>
    <specialSources>
      <allEvents switchValue="Off" name="All Events" />
      <notProcessed switchValue="Off" name="Unprocessed Category" />
      <errors switchValue="All" name="Logging Errors &amp; Warnings">
        <listeners>
          <add name="Rolling Flat File Listener" />
          <add name="Debug Console Listener" />
        </listeners>
      </errors>
    </specialSources>
  </loggingConfiguration>
  <exceptionHandling>
    <exceptionPolicies>
      <add name="ServiceExceptionPolicy">
        <exceptionTypes>
          <add name="All Exceptions" type="System.Exception, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" postHandlingAction="ThrowNewException">
            <exceptionHandlers>
              <add name="Logging Exception Handler" type="Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.Logging.LoggingExceptionHandler, Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" logCategory="ServiceExceptionPolicy" eventId="100" severity="Error" title="Enterprise Library Exception Handling" formatterType="Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.TextExceptionFormatter, Microsoft.Practices.EnterpriseLibrary.ExceptionHandling" priority="0" />
            </exceptionHandlers>
          </add>
        </exceptionTypes>
      </add>
    </exceptionPolicies>
  </exceptionHandling>
  <dataConfiguration defaultDatabase="SOMEDATABASE" />
  <connectionStrings>
  <!-- some connection strings -->
  </connectionStrings>
</configuration>

Anyone know any reason this would fail in one environment but not the other?

来源：https://stackoverflow.com/questions/31618105/unit-test-not-reading-app-config