Add higher-level function for firmware version

Closes #128

luxtronik/__init__.py

@@ -62,6 +62,9 @@ def __init__(self, parameters=None, calculations=None, visibilities=None, safe=T
         self.calculations = Calculations() if calculations is None else calculations
         self.visibilities = Visibilities() if visibilities is None else visibilities
 
+    def get_firmware_version(self):
+        return "".join([self.calculations.get(i).value for i in range(81, 91)])
+
 
 class LuxtronikSocketInterface:
     """Luxtronik read/write interface via socket."""

tests/test_LuxtronikData.py

@@ -0,0 +1,49 @@
+"""Test suite for LuxtronikData"""
+
+from luxtronik import LuxtronikData, Parameters, Calculations, Visibilities
+
+
+class TestLuxtronikData:
+    """Test suite for LuxtronikData datatype"""
+
+    def test_init(self):
+        """Test cases for __init__"""
+
+        a = LuxtronikData()
+        assert a.parameters.safe
+
+        b = LuxtronikData(safe=False)
+        assert not b.parameters.safe
+
+        para = Parameters()
+        c = LuxtronikData(para)
+        assert c.parameters == para
+        assert a.parameters != para
+
+        calc = Calculations()
+        visi = Visibilities()
+        d = LuxtronikData(calculations=calc, visibilities=visi)
+        assert d.calculations == calc
+        assert d.visibilities == visi
+        assert c.calculations != calc
+        assert c.visibilities != visi
+
+    def test_get_firmware_version(self):
+        """Test cases for get_firmware_version()"""
+
+        a = LuxtronikData()
+        for i in range(81, 91):
+            a.calculations.get(i).raw = 0
+        assert a.get_firmware_version() == ""
+
+        a.calculations.get(81).raw = ord("V")
+        assert a.get_firmware_version() == "V"
+
+        a.calculations.get(82).raw = ord("3")
+        assert a.get_firmware_version() == "V3"
+
+        a.calculations.get(83).raw = ord(".")
+        assert a.get_firmware_version() == "V3."
+
+        a.calculations.get(84).raw = ord("1")
+        assert a.get_firmware_version() == "V3.1"