replace test_discover_tests by add_test

[mrabine]

No description provided.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ -0.07%	✅ ∅

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (b6c799d)	9414	9094	96.60%
Head commit (05e3862)	9414 (+0)	9087 (-7)	96.53% (-0.07%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#120)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[coveralls]

Pull Request Test Coverage Report for Build 21522658881

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 7 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.08%) to 96.526%

---

Files with Coverage Reduction	New Missed Lines	%
data/include/join/dtoa.hpp	7	87.7%

Totals
Change from base Build 21516608918:	-0.08%
Covered Lines:	9087
Relevant Lines:	9414

---

💛 - Coveralls

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.61%. Comparing base (b6c799d) to head (05e3862).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #120      +/-   ##
==========================================
- Coverage   96.69%   96.61%   -0.08%     
==========================================
  Files          71       71              
  Lines        8800     8800              
==========================================
- Hits         8509     8502       -7     
- Misses        291      298       +7     

Flag	Coverage Δ
unittests	96.61% <ø> (-0.08%)	⬇️

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