Çözüldü: VS 2017’de Test Debug Modunda Çalışmıyor

VS 2017’de Debug modunda testler çalışmıyor.

Dün gece bir proje üzerinde çalıştım. Bazı görevleri, bazı testleri bitirdim ve GitLab’a bütün kodları Git aracılığı ile gönderdim.

Bugün ofise gittim. GitLab’tan bütün projeyi çektim. VS Solution Explorer üzerinde sağ tıkladım, Restored NuGet Packages seçtim. Fakat bütün testleri çalıştıramadım. Ne yeşil tamam, ne de kırmızı hata vardı. Seçilmemiş gibi gözüküyordu. Debug mod çalıştırmayı denedim ama çalışmadı, aşağıdaki hataları aldım

Image 005 1024x785 - Çözüldü: VS 2017'de Test Debug Modunda Çalışmıyor
VS2017 running debug selected tests does not open the debugger

'testhost.x86.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_32\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\testhost.x86.exe'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Microsoft.TestPlatform.CoreUtilities.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Microsoft.TestPlatform.PlatformAbstractions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Microsoft.TestPlatform.CrossPlatEngine.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Microsoft.TestPlatform.CommunicationUtilities.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Microsoft.VisualStudio.TestPlatform.ObjectModel.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Microsoft.VisualStudio.TestPlatform.Common.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Newtonsoft.Json.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Core\v4.0_4.0.0.0__b77a5c561934e089\System.Core.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Numerics\v4.0_4.0.0.0__b77a5c561934e089\System.Numerics.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.Serialization\v4.0_4.0.0.0__b77a5c561934e089\System.Runtime.Serialization.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Xml.Linq\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.Linq.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_32\System.Data\v4.0_4.0.0.0__b77a5c561934e089\System.Data.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Extensions\Microsoft.VisualStudio.TestTools.CppUnitTestFramework.CppUnitTestExtension.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Extensions\Microsoft.VisualStudio.TestTools.CppUnitTestFramework.ComInterfaces.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.ComponentModel.Composition\v4.0_4.0.0.0__b77a5c561934e089\System.ComponentModel.Composition.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\System.Reflection.Metadata.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Runtime.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.IO\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.IO.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\System.Collections.Immutable.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Reflection\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Reflection.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.IO.FileSystem\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.IO.FileSystem.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.IO.MemoryMappedFiles\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.IO.MemoryMappedFiles.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.Handles\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Runtime.Handles.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Reflection.Extensions\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Reflection.Extensions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Threading\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Threading.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Text.Encoding\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Text.Encoding.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.Extensions\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Runtime.Extensions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
The thread 0x3ca0 has exited with code 0 (0x0).
The program '[13572] testhost.x86.exe: Program Trace' has exited with code 0 (0x0).
The program '[13572] testhost.x86.exe' has exited with code 0 (0x0).

Belki “VS 2017 Çöktü” diye düşündüm. VS 2017’yi tekrardan başlattım ve yine aynı hatayı aldım.

Sonunda, sağ tıklayıp “Clean Solution” demek aklıma geldi ve çalıştı!

Image 006 1024x720 - Çözüldü: VS 2017'de Test Debug Modunda Çalışmıyor

Solved: VS2017 Running Debug Selected Tests Does Not Open The Debugger

I had an issue that VS2017 Running Debug Selected Tests Does Not Open The Debugger.

Last night, I was working on a project. I finished the some tasks, the some tests and I pushed to GitLab all of the projects, using GIT.

Today, I went to office. I pulled all of the projects from source control to my computer. I clicked Restored NuGet Packages on VS Solution Explorer, But I didn’t run all of the tests. I didn’t get neither green check or red error, and It seems like unselected. I tried to debug but It didn’t work! I was getting the following errors:

Image 005 1024x785 - Solved: VS2017 Running Debug Selected Tests Does Not Open The Debugger
VS2017 running debug selected tests does not open the debugger

'testhost.x86.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_32\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\testhost.x86.exe'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Microsoft.TestPlatform.CoreUtilities.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Microsoft.TestPlatform.PlatformAbstractions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Microsoft.TestPlatform.CrossPlatEngine.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Microsoft.TestPlatform.CommunicationUtilities.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Microsoft.VisualStudio.TestPlatform.ObjectModel.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Microsoft.VisualStudio.TestPlatform.Common.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Newtonsoft.Json.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Core\v4.0_4.0.0.0__b77a5c561934e089\System.Core.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Numerics\v4.0_4.0.0.0__b77a5c561934e089\System.Numerics.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.Serialization\v4.0_4.0.0.0__b77a5c561934e089\System.Runtime.Serialization.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Xml.Linq\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.Linq.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_32\System.Data\v4.0_4.0.0.0__b77a5c561934e089\System.Data.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Extensions\Microsoft.VisualStudio.TestTools.CppUnitTestFramework.CppUnitTestExtension.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\Extensions\Microsoft.VisualStudio.TestTools.CppUnitTestFramework.ComInterfaces.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.ComponentModel.Composition\v4.0_4.0.0.0__b77a5c561934e089\System.ComponentModel.Composition.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\System.Reflection.Metadata.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Runtime.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.IO\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.IO.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\ENTERPRISE\COMMON7\IDE\EXTENSIONS\TESTPLATFORM\System.Collections.Immutable.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Reflection\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Reflection.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.IO.FileSystem\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.IO.FileSystem.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.IO.MemoryMappedFiles\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.IO.MemoryMappedFiles.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.Handles\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Runtime.Handles.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Reflection.Extensions\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Reflection.Extensions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Threading\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Threading.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Text.Encoding\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Text.Encoding.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'testhost.x86.exe' (CLR v4.0.30319: testhost.x86.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.Extensions\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Runtime.Extensions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
The thread 0x3ca0 has exited with code 0 (0x0).
The program '[13572] testhost.x86.exe: Program Trace' has exited with code 0 (0x0).
The program '[13572] testhost.x86.exe' has exited with code 0 (0x0).

So, I thought that “Maybe VS 2017 crashed”. I restarted VS 2017, I tried again and failed again.

At least, I decided that “Clean Solution” and It worked!

Image 006 1024x720 - Solved: VS2017 Running Debug Selected Tests Does Not Open The Debugger