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我正在尝试运行一些单元测试，这些单元测试直接对 Oracle 数据库执行一些 SQL 命令，并且在启动单元测试时出现以下异常：

Testmethod1 抛出异常：
System.IO.FileNotFoundException：无法加载文件或程序集“Oracle.DataAccess，版本=4.112.3.0，Culture=neutral，PublicKeyToken=89b483f429c47342”或其依赖项之一。该系统找不到指定的文件。

我有Oracle.DataAccess项目引用（通过 NuGet 添加），并且我已经安装了 Oracle 数据提供程序。

我什至还有一些其他项目Oracle.DataAccess在这台机器上运行而没有问题。似乎只有 Microsoft.Net 单元测试框架 (MSTest) 无法加载程序集。

这是从 Fusion Log Viewer 获取的日志：

*** Assembly Binder Log Entry  (23/08/2013 @ 04:50:07 p.m.) ***

The operation failed.
Bind result: hr = 0x80070002. The system cannot find the file specified.

Assembly manager loaded from:  C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll
Running under executable  C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\QTAgent32_40.exe
--- A detailed error log follows. 

=== Pre-bind state information ===
LOG: User = ...
LOG: DisplayName = Oracle.DataAccess, Version=4.112.3.0, Culture=neutral, PublicKeyToken=89b483f429c47342
 (Fully-specified)
LOG: Appbase = file:///...C:/<solution_folder>.../TestResults/.../Out
LOG: Initial PrivatePath = NULL
LOG: Dynamic Base = NULL
LOG: Cache Base = NULL
LOG: AppName = QTAgent32_40.exe
Calling assembly : ...<project_name>..., Version=1.0.0.0, Culture=neutral, PublicKeyToken=null.
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: C:\...<solution_folder>...\TestResults\...\Out\...<project_name>....DLL.config
LOG: Using host configuration file: 
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.
LOG: Post-policy reference: Oracle.DataAccess, Version=4.112.3.0, Culture=neutral, PublicKeyToken=89b483f429c47342
LOG: GAC Lookup was unsuccessful.
LOG: Attempting download of new URL file:///C:/...<solution_folder>.../TestResults/.../Out/Oracle.DataAccess.DLL.
LOG: Attempting download of new URL file:///C:/...<solution_folder>.../TestResults/.../Out/Oracle.DataAccess/Oracle.DataAccess.DLL.
LOG: Attempting download of new URL file:///C:/...<solution_folder>.../TestResults/.../Out/Oracle.DataAccess.EXE.
LOG: Attempting download of new URL file:///C:/...<solution_folder>.../TestResults/.../Out/Oracle.DataAccess/Oracle.DataAccess.EXE.
LOG: All probing URLs attempted and failed.

它指出在 GAC 中未找到该程序集，但我确实找到了它：C:\Windows\Microsoft.NET\assembly\GAC_64\Oracle.DataAccess\v4.0_4.112.3.0__89b483f429c47342\Oracle.DataAccess.dll\

还值得注意的是，QTAgent32_40.exe即使我在 Visual Studio 菜单中选择了上述日志，也会显示TEST -> Test Settings -> Default Processor Architecture -> X64。在这样做之前，我得到了一个BadImageFormatException。

补充说明：

  • 我安装的 Oracle Data Provider 是 64 位版本。
  • 参考已经有Copy Local=True
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1 回答 1

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发现了问题。

有一个 .testsettings 文件强制测试以 32 位模式运行，无论我选择TEST -> Test Settings -> Default Processor Architecture -> X64.

奇怪的是，如果我选择 X86，我会BadImageFormatException在运行时得到正确的结果，而如果在 .testsettings 文件中强制使用架构，我会得到 .testsettings 文件FileNotFoundException，这有点误导。

于 2013-08-28T16:00:17.200 回答