LoggerTests fail

[NoRePercussions]

Describe the bug
The 5 logging type LoggerTests fail.

Expected equality of these values:
  line
    Which is: NULL
  "EMPTY_FILE"

Inspection reveals that the getline fails:

.../OkapiLib/test/loggerTests.cpp:52: Failure
Expected: (getline(&line, &len, logFile)) != ((-1)), actual: -1 vs -1

Flushing or rewinding the buffer does not help.

Additionally, LoggerTest.TestLazyLogging succeeds, but only because it does not test the output. To check if lazy logging actually works, it should probably test the output.

Steps To Reproduce
Run the LoggerTest tests:

$ ./OkapiLibV5 --gtest_filter="LoggerTest*"

Expected behavior
Tests should pass and getline should not fail to read from the file

Versions
OkapiLib 5 / PurdueSigBots maintenance fork

Additional Information
Compiled with Clang.

[NoRePercussions]

These actually only fail on my machine.

The LoggerTests use open_memstream to create a buffer for testing from. By standard, these streams do not allow reading, but Linux seems to allow for exceptions. Thus, it works fine on the Workflow.