Tests for server.py functions

[ejgl]

Create unit tests for server.py's classes in test_server.py:

An example is:

import unittest
from evora.server.server import Evora, EvoraParser

class TestEvoraParser(unittest.TestCase):
    def setUp(self):
        self.evora = Evora()
        self.parser = EvoraParser(self.evora)
  
    def test_parse_temp(self):
        self.assertTrue(self.parser.parse('temp').isnumeric())

if __name__ == '__main__':
  unittest.main()

Expected outputs can be found in Andor SDK documentation

EvoraParser functions:

• connect
• temp
• tempRange
• setTEC
• getTEC
• warmup
• shutdown
• status
• timings
• vertStats
• horzStats
• abort
• expose
• real
• series

[mattketk]

Added some tests in commit 20dd468 ab874f6.

setTEC in EvoraParser is technically functional, but not sure if more test cases should be added.