Google Test not finding any tests

Question

So I'm working on creating my first unit tests. I'm using Google Test, the version that is currently built into Visual Studio 2017. This is an attempt at a proof of concept, so super simple.

I have a project in the solution for the test code: test.cpp

#include "pch.h"
#include "../ConsoleApplication1/ConsoleApplication1.cpp"

TEST(SumTest, FirstTest) {
  EXPECT_EQ(6, sum(2, 4));
}

TEST(SumTest, SecondTest) {
    EXPECT_EQ(1, 1);
    EXPECT_TRUE(true);
}

And I have a simple method to test in ConsoleApplication1.cpp

// ConsoleApplication1.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"

int sum(int a, int b);

int main()
{
    int x = sum(2, 4);
    printf("The answer is: %d \n", x);

}

int sum(int a, int b) {
    return a + b;
}

Everything compiles fine, but when I click 'Run All' from the Test Explorer menu, I get the following output:

[5/7/2018 4:17:42 PM Informational] ------ Run test started ------
[5/7/2018 4:17:43 PM Informational] Test Adapter for Google Test: Test execution starting...
[5/7/2018 4:17:43 PM Informational] Found 0 tests in executable C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe
[5/7/2018 4:17:43 PM Informational] Found 0 tests in executable C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe
[5/7/2018 4:17:43 PM Informational] Running 0 tests...
[5/7/2018 4:17:43 PM Informational] Google Test execution completed, overall duration: 00:00:00.3666448
[5/7/2018 4:17:43 PM Warning] Could not locate debug symbols for 'C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe'. To make use of '--list_content' discovery, ensure that debug symbols are available or make use of '<ForceListContent>' via a .runsettings file.
[5/7/2018 4:17:44 PM Warning] Could not locate debug symbols for 'C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe'. To make use of '--list_content' discovery, ensure that debug symbols are available or make use of '<ForceListContent>' via a .runsettings file.
[5/7/2018 4:17:44 PM Warning] No test is available in C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe. Make sure that test discoverer & executors are registered and platform & framework version settings are appropriate and try again.
[5/7/2018 4:17:44 PM Informational] ========== Run test finished: 0 run (0:00:01.9324761) ==========
[5/7/2018 4:20:39 PM Informational] ------ Discover test started ------
[5/7/2018 4:20:40 PM Informational] Test Adapter for Google Test: Test discovery starting...
[5/7/2018 4:20:40 PM Informational] Found 0 tests in executable C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe
[5/7/2018 4:20:40 PM Informational] Test discovery completed, overall duration: 00:00:00.3954411
[5/7/2018 4:20:40 PM Warning] Could not locate debug symbols for 'C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe'. To make use of '--list_content' discovery, ensure that debug symbols are available or make use of '<ForceListContent>' via a .runsettings file.
[5/7/2018 4:20:40 PM Informational] ========== Discover test finished: 0 found (0:00:01.8597435) ==========
[5/7/2018 4:20:47 PM Informational] ------ Discover test started ------
[5/7/2018 4:20:48 PM Informational] Test Adapter for Google Test: Test discovery starting...
[5/7/2018 4:20:49 PM Informational] Found 0 tests in executable C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe
[5/7/2018 4:20:49 PM Informational] Test discovery completed, overall duration: 00:00:00.3670275
[5/7/2018 4:20:49 PM Warning] Could not locate debug symbols for 'C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe'. To make use of '--list_content' discovery, ensure that debug symbols are available or make use of '<ForceListContent>' via a .runsettings file.
[5/7/2018 4:20:49 PM Warning] Could not locate debug symbols for 'C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe'. To make use of '--list_content' discovery, ensure that debug symbols are available or make use of '<ForceListContent>' via a .runsettings file.
[5/7/2018 4:20:49 PM Informational] ========== Discover test finished: 0 found (0:00:01.873206) ==========
[5/7/2018 4:21:36 PM Informational] ------ Run test started ------
[5/7/2018 4:21:37 PM Informational] Test Adapter for Google Test: Test execution starting...
[5/7/2018 4:21:38 PM Informational] Found 0 tests in executable C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe
[5/7/2018 4:21:38 PM Informational] Found 0 tests in executable C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe
[5/7/2018 4:21:38 PM Informational] Running 0 tests...
[5/7/2018 4:21:38 PM Informational] Google Test execution completed, overall duration: 00:00:00.3844604
[5/7/2018 4:21:38 PM Warning] Could not locate debug symbols for 'C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe'. To make use of '--list_content' discovery, ensure that debug symbols are available or make use of '<ForceListContent>' via a .runsettings file.
[5/7/2018 4:21:38 PM Warning] Could not locate debug symbols for 'C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe'. To make use of '--list_content' discovery, ensure that debug symbols are available or make use of '<ForceListContent>' via a .runsettings file.
[5/7/2018 4:21:38 PM Warning] No test is available in C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe. Make sure that test discoverer & executors are registered and platform & framework version settings are appropriate and try again.
[5/7/2018 4:21:38 PM Informational] ========== Run test finished: 0 run (0:00:02.0203611) ==========
[5/7/2018 4:27:21 PM Informational] ------ Run test started ------
[5/7/2018 4:27:34 PM Informational] Test Adapter for Google Test: Test execution starting...
[5/7/2018 4:27:35 PM Informational] Found 0 tests in executable C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe
[5/7/2018 4:27:35 PM Informational] Found 0 tests in executable C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe
[5/7/2018 4:27:35 PM Informational] Running 0 tests...
[5/7/2018 4:27:35 PM Informational] Google Test execution completed, overall duration: 00:00:00.6936342
[5/7/2018 4:27:35 PM Warning] Could not locate debug symbols for 'C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe'. To make use of '--list_content' discovery, ensure that debug symbols are available or make use of '<ForceListContent>' via a .runsettings file.
[5/7/2018 4:27:35 PM Warning] Could not locate debug symbols for 'C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe'. To make use of '--list_content' discovery, ensure that debug symbols are available or make use of '<ForceListContent>' via a .runsettings file.
[5/7/2018 4:27:35 PM Warning] No test is available in C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe. Make sure that test discoverer & executors are registered and platform & framework version settings are appropriate and try again.
[5/7/2018 4:27:35 PM Informational] ========== Run test finished: 0 run (0:00:14.3144745) ==========
[5/7/2018 4:27:59 PM Informational] ------ Run test started ------
[5/7/2018 4:28:11 PM Informational] Test Adapter for Google Test: Test execution starting...
[5/7/2018 4:28:11 PM Informational] Found 0 tests in executable C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe
[5/7/2018 4:28:11 PM Informational] Found 0 tests in executable C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe
[5/7/2018 4:28:11 PM Informational] Running 0 tests...
[5/7/2018 4:28:11 PM Informational] Google Test execution completed, overall duration: 00:00:00.6451099
[5/7/2018 4:28:11 PM Warning] Could not locate debug symbols for 'C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe'. To make use of '--list_content' discovery, ensure that debug symbols are available or make use of '<ForceListContent>' via a .runsettings file.
[5/7/2018 4:28:12 PM Warning] Could not locate debug symbols for 'C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe'. To make use of '--list_content' discovery, ensure that debug symbols are available or make use of '<ForceListContent>' via a .runsettings file.
[5/7/2018 4:28:12 PM Warning] No test is available in C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe. Make sure that test discoverer & executors are registered and platform & framework version settings are appropriate and try again.
[5/7/2018 4:28:12 PM Informational] ========== Run test finished: 0 run (0:00:12.9601734) ==========
[5/7/2018 4:29:59 PM Informational] ------ Run test started ------
[5/7/2018 4:30:59 PM Error] Microsoft.VisualStudio.TestPlatform.ObjectModel.TestPlatformException: Failed to initialize client proxy: could not connect to test process.
   at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyOperationManager.SetupChannel(IEnumerable`1 sources, CancellationToken cancellationToken)
   at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyExecutionManager.StartTestRun(TestRunCriteria testRunCriteria, ITestRunEventsHandler eventHandler)
[5/7/2018 4:30:59 PM Error] Microsoft.VisualStudio.TestPlatform.ObjectModel.TestPlatformException: Failed to initialize client proxy: could not connect to test process.
   at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyOperationManager.SetupChannel(IEnumerable`1 sources, CancellationToken cancellationToken)
   at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Client.ProxyExecutionManager.StartTestRun(TestRunCriteria testRunCriteria, ITestRunEventsHandler eventHandler)
[5/7/2018 4:30:59 PM Informational] ========== Run test finished: 0 run (0:01:00.2319577) ==========
[5/7/2018 4:34:34 PM Informational] ------ Discover test started ------
[5/7/2018 4:34:36 PM Informational] Test Adapter for Google Test: Test discovery starting...
[5/7/2018 4:34:36 PM Informational] Found 0 tests in executable C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe
[5/7/2018 4:34:36 PM Informational] Test discovery completed, overall duration: 00:00:00.3801077
[5/7/2018 4:34:36 PM Warning] Could not locate debug symbols for 'C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe'. To make use of '--list_content' discovery, ensure that debug symbols are available or make use of '<ForceListContent>' via a .runsettings file.
[5/7/2018 4:34:36 PM Warning] Could not locate debug symbols for 'C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe'. To make use of '--list_content' discovery, ensure that debug symbols are available or make use of '<ForceListContent>' via a .runsettings file.
[5/7/2018 4:34:36 PM Informational] ========== Discover test finished: 0 found (0:00:01.89196) ==========
[5/7/2018 4:34:41 PM Informational] ------ Run test started ------
[5/7/2018 4:34:42 PM Informational] Test Adapter for Google Test: Test execution starting...
[5/7/2018 4:34:43 PM Informational] Found 0 tests in executable C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe
[5/7/2018 4:34:43 PM Informational] Found 0 tests in executable C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe
[5/7/2018 4:34:43 PM Informational] Running 0 tests...
[5/7/2018 4:34:43 PM Informational] Google Test execution completed, overall duration: 00:00:00.3975222
[5/7/2018 4:34:43 PM Warning] Could not locate debug symbols for 'C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe'. To make use of '--list_content' discovery, ensure that debug symbols are available or make use of '<ForceListContent>' via a .runsettings file.
[5/7/2018 4:34:43 PM Warning] Could not locate debug symbols for 'C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe'. To make use of '--list_content' discovery, ensure that debug symbols are available or make use of '<ForceListContent>' via a .runsettings file.
[5/7/2018 4:34:43 PM Warning] No test is available in C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\ConsoleApplication1.exe C:\Users\ruggiero\source\repos\Google Test - Sandbox\Debug\Google Test - Sandbox.exe. Make sure that test discoverer & executors are registered and platform & framework version settings are appropriate and try again.
[5/7/2018 4:34:43 PM Informational] ========== Run test finished: 0 run (0:00:01.9803681) ==========

It doesn't seem to be discovering either of the tests I'd written, and I'm not sure why.

Answer 1

GoogleTest framework in the common case requires RUN_ALL_TESTS macro in main:

int main(int argc, char **argv) {
  ::testing::InitGoogleTest(&argc, argv);
  return RUN_ALL_TESTS();
}

Then you can add your tests into different cpp files and the magic under the hood will launch all of them and show nice report.

Although, you can use Google Tests even without this macro. See this answer.