Updated the unittests for the species module and added a validate fun…

…ction.

spatialpy/core/species.py

@@ -31,19 +31,6 @@ class Species():
     :type restrict_to: int, str, list of ints or list of strs
     """
     def __init__(self, name=None, diffusion_coefficient=None, restrict_to=None):
-        if name is None:
-            raise SpeciesError("Species must have a name")
-        if not isinstance(name, str):
-            raise SpeciesError("Species name must be a string")
-
-        if  diffusion_coefficient is None:
-            raise SpeciesError("Species must have a diffusion_coefficient.")
-        if not (isinstance(diffusion_coefficient, (Parameter, str, float, int)) or \
-                    type(diffusion_coefficient).__name__ == 'Parameter'):
-            raise SpeciesError("Diffusion coefficient must be a spatialpy.Parameter, str, float, or int.")
-        if isinstance(diffusion_coefficient, (float, int)) and diffusion_coefficient < 0:
-            raise SpeciesError("Diffusion coefficient must be non-negative.")
-
         if not (restrict_to is None or isinstance(restrict_to, (str, int, list))):
             raise SpeciesError("Restrict_to must be an int, str or list of ints or strs.")
         if restrict_to is not None and isinstance(restrict_to, (int, str)):
@@ -58,6 +45,8 @@ def __init__(self, name=None, diffusion_coefficient=None, restrict_to=None):
             for type_id in restrict_to:
                 self.restrict_to.append(f"type_{type_id}")
 
+        self.validate()
+
     def __str__(self):
         print_string = f"{self.name}: {str(self.diffusion_coefficient)}"
         return print_string
@@ -71,10 +60,48 @@ def set_diffusion_coefficient(self, diffusion_coefficient):
 
         :raises SpeciesError: If diffusion_coefficient is negative or not a valid type.
         """
-        if not (isinstance(diffusion_coefficient, (Parameter, str, float, int)) or \
-                            type(diffusion_coefficient).__name__ == 'Parameter'):
-            raise SpeciesError("Diffusion coefficient must be a spatialpy.Parameter, str, float, or int.")
-        if diffusion_coefficient < 0:
-            raise SpeciesError("Diffusion coefficient must be non-negative.")
+        self.validate(diffusion_coefficient=diffusion_coefficient, coverage="diffusion_coefficient")
 
         self.diffusion_coefficient = diffusion_coefficient
+
+    def validate(self, diffusion_coefficient=None, coverage="all"):
+        """
+        Validate the species.
+
+        :param coverage: The scope of attributes to validate.  Set to an attribute name to restrict validation \
+                         to a specific attribute.
+        :type coverage: str
+
+        :raises SpeciesError: Attribute is of invalid type.  Required attribute set to None.  \
+                              Attribute is value outside of accepted bounds.
+        """
+        # Check name
+        if coverage in ("all", "name"):
+            if self.name is None:
+                raise SpeciesError("name can't be None type.")
+            if not isinstance(self.name, str):
+                raise SpeciesError(f"name must be of type str not {type(self.name)}.")
+            if self.name == "":
+                raise SpeciesError("name can't be an empty str.")
+
+        # Check diffusion coefficient
+        if coverage in ("all", "diffusion_coefficient"):
+            if coverage == "all" and diffusion_coefficient is None:
+                diffusion_coefficient = self.diffusion_coefficient
+
+            if diffusion_coefficient is None:
+                raise SpeciesError("diffusion_coefficient can't be None type.")
+            if not (isinstance(diffusion_coefficient, (Parameter, str, float, int)) or \
+                    type(diffusion_coefficient).__name__ == 'Parameter'):
+                errmsg = "diffusion_coefficient must be of type SpatialPy.Parameter, "
+                errmsg += f"str, int, float not {type(diffusion_coefficient)}"
+                raise SpeciesError(errmsg)
+            if isinstance(diffusion_coefficient, (int, float)) and diffusion_coefficient < 0:
+                raise SpeciesError("diffusion_coefficient must be a positive value.")
+
+        # Check restrict_to
+        if coverage in ("all", "restrict_to"):
+            if not (self.restrict_to is None or isinstance(self.restrict_to, list)):
+                raise SpeciesError("restrict_to must be None or of type int, str, or list")
+            if self.restrict_to is not None and len(self.restrict_to) == 0:
+                raise SpeciesError("restrict_to can't be an empty list.")

test/unit_tests/test_species.py

@@ -25,92 +25,135 @@ class TestSpecies(unittest.TestCase):
     Unit tests for spatialpy.Species.
     ################################################################################################
     '''
+    def setUp(self):
+        self.species = Species(name="test_species", diffusion_coefficient=0)
+
     def test_constructor(self):
         """ Test the Species constructor. """
         species = Species(name="test_species", diffusion_coefficient=0)
         self.assertEqual(species.name, "test_species")
         self.assertEqual(species.diffusion_coefficient, 0)
 
-
     def test_constructor__no_name(self):
         """ Test the Species constructor without name. """
         with self.assertRaises(SpeciesError):
             species = Species(diffusion_coefficient=0)
 
-
-    def test_constructor__name_not_str(self):
-        """ Test the Species constructor with non-str name. """
-        with self.assertRaises(SpeciesError):
-            species = Species(name=0, diffusion_coefficient=0)
-
+    def test_constructor__invalid_name(self):
+        """ Test the Species constructor with an invalid name. """
+        test_names = ["", None, 0, 0.5, [0]]
+        for test_name in test_names:
+            with self.subTest(name=test_name):
+                with self.assertRaises(SpeciesError):
+                    species = Species(name=test_name, diffusion_coefficient=0)
 
     def test_constructor__no_diffusion_coefficient(self):
         """ Test the Species constructor without diffusion_coefficient. """
         with self.assertRaises(SpeciesError):
             species = Species(name="test_species")
 
-
     def test_constructor__negative_diffusion_coefficient(self):
         """ Test the Species constructor with negative diffusion_coefficient. """
         with self.assertRaises(SpeciesError):
             species = Species(name="test_species", diffusion_coefficient=-1)
 
-
     def test_constructor__parameter_diffusion_coefficient(self):
         """ Test the Species constructor with a parameter for diffusion_coefficient. """
         test_parameter = Parameter(name="test_parameter", expression=0.5)
         species = Species(name="test_species", diffusion_coefficient=test_parameter)
         self.assertIsInstance(species.diffusion_coefficient, Parameter)
 
-
-    def test_constructor__diffusion_coefficient_not_str_int_or_float(self):
-        """ Test the Species constructor with non-str, non-int, or non-float diffusion_coefficient. """
-        with self.assertRaises(SpeciesError):
-            species = Species(name="test_species", diffusion_coefficient=[0])
-
-
-    def test_constructor__restrict_to_not_accepted_type(self):
-        """ Test the Species constructor with a restrict_to that is not the proper type. """
-        with self.assertRaises(SpeciesError):
-            species = Species(name="test_species", diffusion_coefficient="0", restrict_to=1.5)
-
+    def test_constructor__invalid_diffusion_coefficient(self):
+        """ Test the Species constructor with an invalid diffusion_coefficient. """
+        test_dcs = [None, [0]]
+        for test_dc in test_dcs:
+            with self.subTest(initial_value=test_dc):
+                with self.assertRaises(SpeciesError):
+                    species = Species(name="test_species", diffusion_coefficient=test_dc)
+
+    def test_constructor__invalid_restrict_to(self):
+        """ Test the Species constructor with an invalid restrict_to. """
+        test_rts = [0.5, [], (5, 2), {'x': 5}]
+        for test_rt in test_rts:
+            with self.subTest(restrict_to=test_rt):
+                with self.assertRaises(SpeciesError):
+                    species = Species(name="test_species", diffusion_coefficient="0", restrict_to=test_rt)
 
     def test_constructor__int_restrict_to(self):
         """ Test the Species constructor with a int restrict_to. """
         species = Species(name="test_species", diffusion_coefficient=0, restrict_to=1)
         self.assertIsInstance(species.restrict_to, list)
         self.assertEqual(species.restrict_to, ["type_1"])
 
-
     def test_constructor__str_restrict_to(self):
         """ Test the Species constructor with a string restrict_to. """
         species = Species(name="test_species", diffusion_coefficient=0, restrict_to="Walls")
         self.assertIsInstance(species.restrict_to, list)
         self.assertEqual(species.restrict_to, ["type_Walls"])
 
-
     def test___str___(self):
         """ Test Species.__str__ method. """
-        species = Species(name="test_species", diffusion_coefficient=0)
-        self.assertIsInstance(str(species), str)
-
+        self.assertIsInstance(str(self.species), str)
 
     def test_set_diffusion_coefficient(self):
         """ Test Species.set_diffusion_coefficient method. """
-        species = Species(name="test_species", diffusion_coefficient=0)
-        species.set_diffusion_coefficient(diffusion_coefficient=1)
-        self.assertEqual(species.diffusion_coefficient, 1)
+        self.species.set_diffusion_coefficient(diffusion_coefficient=1)
+        self.assertEqual(self.species.diffusion_coefficient, 1)
 
+    def test_set_diffusion_coefficient__invalid_diffusion_coefficient(self):
+        """ Test Species.set_diffusion_coefficient method with an invalid diffusion_coefficient. """
+        test_dcs = [None, [1]]
+        for test_dc in test_dcs:
+            with self.subTest(diffusion_coefficient=test_dc):
+                with self.assertRaises(SpeciesError):
+                    self.species.set_diffusion_coefficient(diffusion_coefficient=test_dc)
 
     def test_set_diffusion_coefficient__negative_diffusion_coefficient(self):
         """ Test Species.set_diffusion_coefficient method with negative diffusion_coefficient. """
-        species = Species(name="test_species", diffusion_coefficient=0)
-        with self.assertRaises(SpeciesError):
-            species.set_diffusion_coefficient(diffusion_coefficient=-1)
-
-
-    def test_set_diffusion_coefficient__diffusion_coefficient_not_str_int_or_float(self):
-        """ Test Species.set_diffusion_coefficient method with non-str, non-int, or non-float diffusion_coefficient. """
-        species = Species(name="test_species", diffusion_coefficient=0)
         with self.assertRaises(SpeciesError):
-            species.set_diffusion_coefficient(diffusion_coefficient=[0])
+            self.species.set_diffusion_coefficient(diffusion_coefficient=-1)
+
+    def test_validate__invalid_name(self):
+        """ Test Species.validate with an invalid name. """
+        test_names = ["", None, 0, 0.5, [0]]
+        for test_name in test_names:
+            with self.subTest(name=test_name):
+                with self.assertRaises(SpeciesError):
+                    self.species.name = test_name
+                    self.species.validate()
+
+    def test_validate__invalid_diffusion_coefficient(self):
+        """ Test Species.validate with an invalid diffusion_coefficient. """
+        test_dcs = [None, [0]]
+        for test_dc in test_dcs:
+            with self.subTest(initial_value=test_dc):
+                with self.assertRaises(SpeciesError):
+                    self.species.diffusion_coefficient = test_dc
+                    self.species.validate()
+
+    def test_validate__invalid_diffusion_coefficient_value(self):
+        """ Test Species.validate with an invalid diffusion_coefficient value. """
+        test_dcs = [-0.5, -1, -3, -5]
+        for test_dc in test_dcs:
+            with self.subTest(initial_value=test_dc):
+                with self.assertRaises(SpeciesError):
+                    self.species.diffusion_coefficient = test_dc
+                    self.species.validate()
+
+    def test_validate__invalid_restrict_to(self):
+        """ Test Species.validate with an invalid restrict_to. """
+        test_rts = ["5", 1, 0.5, [], (1, 2), {'x': 1}]
+        for test_rt in test_rts:
+            with self.subTest(restrict_to=test_rt):
+                with self.assertRaises(SpeciesError):
+                    self.species.restrict_to = test_rt
+                    self.species.validate()
+
+    def test_comp_time_of_validate(self):
+        """ Check the computation time of validate. """
+        import time
+        from datetime import datetime
+        start = time.time()
+        self.species.validate()
+        tic = datetime.utcfromtimestamp(time.time() - start)
+        print(f"Total time to run validate: {tic.strftime('%M mins %S secs %f msecs')}")