Add tests for the Time class in Fw

[gazayas]

Originating Project/Creator	Gabriel Zayas
Affected Component	Fw
Affected Architectures(s)	None
Related Issue(s)	None
Has Unit Tests (y/n)	Yes
Builds Without Errors (y/n)	Yes
Unit Tests Pass (y/n)	Yes
Documentation Included (y/n)	No

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Change Description

I added a few tests for the Time class in the Fw component.

Rationale

There was a comment indicating the tests should check the add function, but no tests had been implemented.

fprime/Fw/Time/test/ut/TimeTest.cpp

Lines 32 to 42 in 91c578e

	// test add
	// test subtract
	// normal subtract
	Fw::Time time3 = Fw::Time::sub(time2,time1);
	ASSERT_EQ(time3.m_timeBase,TB_NONE);
	ASSERT_EQ(time3.m_timeContext,0);
	ASSERT_EQ(time3.m_seconds,3000);
	ASSERT_EQ(time3.m_useconds,1000);

Testing/Review Recommendations

The tests are pretty straight-forward, but I particularly gave attention to how I commented each test since I felt it could've used a little cleaning up.

Future Work

Apart from add I added tests for checking comparison logic, but if there are any other parts of the class that aren't covered here, it might be a good idea to test those parts as well.

[LeStarch]

This looks like a step towards better testing. Thank you!

[LeStarch]

This is failing on an unrelated problem that has already been fixed in devel. I am not sure why CI is unhappy. I am going to merge it and keep an eye on the post-merge build.