fix: substitute UT_ASSERTs with asserts from GTEST part 4

[EuphoricThinking]

The PR is a part of a major fix, which will be provided in multiple files.

Ref. #569

Although canQuery*(...) use UT_ASSERTs only in their body and the returned value is interpreted as a reason to skip tests, not to fail, I assume that unsuccessful results from hwloc functions are fatal in order not to change canQuery*(...) return types. If this is not a plausible argument, I think of implementing an enum {SUCCESS, NOT_FATAL, FATAL} for deciding whether tests should fail or should be skipped.

The condition using ::memspaceGetTest::IsSkipped() in memspaceProviderTest is replaced due to its ineffectiveness: it has used the method from superclass for itself, before skipping any tests.

Introduced GTEST_OUT_* macros for logging error messages without interrupting the program execution and assessing the value of the given condition (maybe there could be something more elegant than a multi-functional macro). EXPECT_* and ADD_FAILURE() interefere with GTEST_SKIP() when used in a non-void helper function - tests are run in spite of labelling as ,,skipped" by the fixture.

Description

Checklist

• Code compiles without errors locally
• All tests pass locally
• CI workflows execute properly

• CI workflows, not executed per PR (e.g. Nightly), execute properly
• New tests added, especially if they will fail without my changes
• Added/extended example(s) to cover this functionality
• Extended the README/documentation
• All newly added source files have a license
• All newly added source files are referenced in CMake files
• Logger (with debug/info/... messages) is used