Deprivatise tests

[A-CGray]

Since element unit test functions are called from outside the element class during unit tests, they shouldn't be private functions

[codeclimate]

Code Climate has analyzed commit 736b7ca and detected 0 issues on this pull request.

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[sourcery-ai]

Sourcery Code Quality Report

❌  Merging this PR will decrease code quality in the affected files by 0.01%.

Quality metrics	Before	After	Change
Complexity	1.61 ⭐	1.61 ⭐	0.00
Method Length	46.05 ⭐	46.10 ⭐	0.05 👎
Working memory	8.01 🙂	8.01 🙂	0.00
Quality	75.57% ⭐	75.56% ⭐	-0.01% 👎

Other metrics	Before	After	Change
Lines	945	945	0

Changed files	Quality Before	Quality After	Quality Change
FEMpy/Element.py	77.75% ⭐	77.75% ⭐	0.00%
FEMpy/Lagrange1dElement.py	89.05% ⭐	89.05% ⭐	0.00%
FEMpy/QuadElement.py	73.52% 🙂	73.52% 🙂	0.00%
FEMpy/SerendipityQuad.py	64.52% 🙂	64.52% 🙂	0.00%
tests/testElements.py	88.02% ⭐	88.02% ⭐	0.00%

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation
FEMpy/QuadElement.py	QuadElement.integrateTraction	6 ⭐	118 🙂	15 😞	52.82% 🙂	Extract out complex expressions
FEMpy/Element.py	Element.getStiffnessMat	4 ⭐	106 🙂	13 😞	59.01% 🙂	Extract out complex expressions
FEMpy/Element.py	Element.getMassMat	4 ⭐	106 🙂	13 😞	59.01% 🙂	Extract out complex expressions
FEMpy/SerendipityQuad.py	serendipityShapeFuncDerivs	0 ⭐	286 ⛔	7 🙂	60.32% 🙂	Try splitting into smaller methods
FEMpy/Element.py	Element.integrateBodyForce	3 ⭐	93 🙂	13 😞	61.78% 🙂	Extract out complex expressions

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[codecov]

Codecov Report

Merging #25 (52e9484) into main (8df276f) will not change coverage.
The diff coverage is 100.00%.

❗ Current head 52e9484 differs from pull request most recent head 736b7ca. Consider uploading reports for the commit 736b7ca to get more accurate results

@@           Coverage Diff           @@
##             main      #25   +/-   ##
=======================================
  Coverage   49.57%   49.57%           
=======================================
  Files          18       18           
  Lines         714      714           
=======================================
  Hits          354      354           
  Misses        360      360           

Impacted Files	Coverage Δ
FEMpy/Element.py	44.44% <100.00%> (ø)
FEMpy/Lagrange1dElement.py	90.90% <100.00%> (ø)
FEMpy/QuadElement.py	59.18% <100.00%> (ø)
FEMpy/SerendipityQuad.py	100.00% <100.00%> (ø)

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