diff --git a/tests/testCore.py b/tests/testCore.py
deleted file mode 100644
index 6b8872e..0000000
--- a/tests/testCore.py
+++ /dev/null
@@ -1,67 +0,0 @@
-
-import unittest
-
-from core.correctness.validation import check_input, valid_string
-from core.correctness.vars import VALID_NAME_CHARS
-from core.meow import BasePattern, BaseRecipe, BaseRule
-
-
-class CorrectnessTests(unittest.TestCase):
-    def setUp(self) -> None:
-        return super().setUp()
-
-    def tearDown(self) -> None:
-        return super().tearDown()
-
-    def testCheckInput(self):
-        # Valid input
-        check_input(1, int)
-        check_input(0, int)
-        check_input(False, bool)
-        check_input(True, bool)
-        
-        # Misstyped input
-        with self.assertRaises(TypeError):
-            check_input(1, str)
-
-        # Or none
-        check_input(None, int, or_none=True)
-        with self.assertRaises(TypeError):
-            check_input(None, int, or_none=False)
-
-    def testValidString(self):
-        # Valid input
-        valid_string("", "")
-        valid_string("David_Marchant", VALID_NAME_CHARS)
-
-        # Misstyped input
-        with self.assertRaises(TypeError):
-            valid_string(1, VALID_NAME_CHARS)
-        with self.assertRaises(TypeError):
-            valid_string("David_Marchant", 1)
-
-        # Missing chars
-        with self.assertRaises(ValueError):
-            valid_string("David Marchant", VALID_NAME_CHARS)
-
-class MeowTests(unittest.TestCase):
-    def setUp(self) -> None:
-        return super().setUp()
-    
-    def tearDown(self) -> None:
-        return super().tearDown()
-
-    def testBaseRecipe(self):
-        # Should not be implementable on its own
-        with self.assertRaises(TypeError):
-            BaseRecipe("", "")
-
-    def testBasePattern(self):
-        # Should not be implementable on its own
-        with self.assertRaises(TypeError):
-            BasePattern("", "")
-
-    def testBaseRule(self):
-        # Should not be implementable on its own
-        with self.assertRaises(TypeError):
-            BaseRule("", "")
diff --git a/tests/testMeow.py b/tests/testMeow.py
new file mode 100644
index 0000000..4e195e5
--- /dev/null
+++ b/tests/testMeow.py
@@ -0,0 +1,24 @@
+
+import unittest
+
+from core.meow import BasePattern, BaseRecipe, BaseRule
+
+
+class MeowTests(unittest.TestCase):
+    def setUp(self)->None:
+        return super().setUp()
+    
+    def tearDown(self)->None:
+        return super().tearDown()
+
+    def testBaseRecipe(self)->None:
+        with self.assertRaises(TypeError):
+            BaseRecipe("", "")
+
+    def testBasePattern(self)->None:
+        with self.assertRaises(TypeError):
+            BasePattern("", "")
+
+    def testBaseRule(self)->None:
+        with self.assertRaises(TypeError):
+            BaseRule("", "")
diff --git a/tests/testPatterns.py b/tests/testPatterns.py
index fa169b3..7a003e0 100644
--- a/tests/testPatterns.py
+++ b/tests/testPatterns.py
@@ -11,6 +11,71 @@ class CorrectnessTests(unittest.TestCase):
     def tearDown(self) -> None:
         return super().tearDown()
 
-    def testFileEventPattern(self):
-        pass
+    def testFileEventPatternCreationMinimum(self)->None:
+        FileEventPattern("name", "path", "recipe", "file")
 
+    def testFileEventPatternCreationEmptyName(self)->None:
+        with self.assertRaises(ValueError):
+            FileEventPattern("", "path", "recipe", "file")
+
+    def testFileEventPatternCreationEmptyPath(self)->None:
+        with self.assertRaises(ValueError):
+            FileEventPattern("name", "", "recipe", "file")
+
+    def testFileEventPatternCreationEmptyRecipe(self)->None:
+        with self.assertRaises(ValueError):
+            FileEventPattern("name", "path", "", "file")
+
+    def testFileEventPatternCreationEmptyFile(self)->None:
+        with self.assertRaises(ValueError):
+            FileEventPattern("name", "path", "recipe", "")
+
+    def testFileEventPatternCreationInvalidName(self)->None:
+        with self.assertRaises(ValueError):
+            FileEventPattern("@name", "path", "recipe", "file")
+
+    def testFileEventPatternCreationInvalidRecipe(self)->None:
+        with self.assertRaises(ValueError):
+            FileEventPattern("name", "path", "@recipe", "file")
+
+    def testFileEventPatternCreationInvalidFile(self)->None:
+        with self.assertRaises(ValueError):
+            FileEventPattern("name", "path", "recipe", "@file")
+
+    def testFileEventPatternSetupName(self)->None:
+        name = "name"
+        fep = FileEventPattern(name, "path", "recipe", "file")
+        self.assertEqual(fep.name, name)
+
+    def testFileEventPatternSetupPath(self)->None:
+        path = "path"
+        fep = FileEventPattern("name", path, "recipe", "file")
+        self.assertEqual(fep.triggering_path, path)
+
+    def testFileEventPatternSetupRecipe(self)->None:
+        recipe = "recipe"
+        fep = FileEventPattern("name", "path", recipe, "file")
+        self.assertEqual(fep.recipe, recipe)
+
+    def testFileEventPatternSetupFile(self)->None:
+        file = "file"
+        fep = FileEventPattern("name", "path", "recipe", file)
+        self.assertEqual(fep.triggering_file, file)
+
+    def testFileEventPatternSetupParementers(self)->None:
+        parameters = {
+            "a": 1,
+            "b": True
+        }
+        fep = FileEventPattern(
+            "name", "path", "recipe", "file", parameters=parameters)
+        self.assertEqual(fep.parameters, parameters)
+
+    def testFileEventPatternSetupOutputs(self)->None:
+        outputs = {
+            "a": "a",
+            "b": "b"
+        }
+        fep = FileEventPattern(
+            "name", "path", "recipe", "file", outputs=outputs)
+        self.assertEqual(fep.outputs, outputs)
diff --git a/tests/testRecipes.py b/tests/testRecipes.py
index 5d46c52..3722e77 100644
--- a/tests/testRecipes.py
+++ b/tests/testRecipes.py
@@ -1,16 +1,81 @@
 
-
+import jsonschema
 import unittest
 
 from recipes.JupyterNotebookRecipe import JupyterNotebookRecipe
 
+BAREBONES_NOTEBOOK = {
+    "cells": [],
+    "metadata": {},
+    "nbformat": 4,
+    "nbformat_minor": 4
+}
 
 class CorrectnessTests(unittest.TestCase):
-    def setUp(self) -> None:
+    def setUp(self)->None:
         return super().setUp()
 
-    def tearDown(self) -> None:
+    def tearDown(self)->None:
         return super().tearDown()
 
-    def testJupyterNotebookRecipe(self):
-        pass
\ No newline at end of file
+    def testJupyterNotebookRecipeCreationMinimum(self)->None:
+        JupyterNotebookRecipe("test_recipe", BAREBONES_NOTEBOOK)
+
+    def testJupyterNotebookRecipeCreationSource(self)->None:
+        JupyterNotebookRecipe(
+            "test_recipe", BAREBONES_NOTEBOOK, source="notebook.ipynb")
+
+    def testJupyterNotebookRecipeCreationNoName(self)->None:
+        with self.assertRaises(ValueError):
+            JupyterNotebookRecipe("", BAREBONES_NOTEBOOK)
+
+    def testJupyterNotebookRecipeCreationInvalidName(self)->None:
+        with self.assertRaises(ValueError):
+            JupyterNotebookRecipe("@test_recipe", BAREBONES_NOTEBOOK)
+
+    def testJupyterNotebookRecipeCreationInvalidRecipe(self)->None:
+        with self.assertRaises(jsonschema.exceptions.ValidationError):
+            JupyterNotebookRecipe("test_recipe", {})
+
+    def testJupyterNotebookRecipeCreationInvalidSourceExtension(self)->None:
+        with self.assertRaises(ValueError):
+            JupyterNotebookRecipe(
+                "test_recipe", BAREBONES_NOTEBOOK, source="notebook")
+
+    def testJupyterNotebookRecipeCreationInvalidSoureChar(self)->None:
+        with self.assertRaises(ValueError):
+            JupyterNotebookRecipe(
+                "test_recipe", BAREBONES_NOTEBOOK, source="@notebook.ipynb")
+
+    def testJupyterNotebookRecipeSetupName(self)->None:
+        name = "name"
+        jnr = JupyterNotebookRecipe(name, BAREBONES_NOTEBOOK)
+        self.assertEqual(jnr.name, name)
+
+    def testJupyterNotebookRecipeSetupRecipe(self)->None:
+        jnr = JupyterNotebookRecipe("name", BAREBONES_NOTEBOOK)
+        self.assertEqual(jnr.recipe, BAREBONES_NOTEBOOK)
+
+    def testJupyterNotebookRecipeSetupParameters(self)->None:
+        parameters = {
+            "a": 1,
+            "b": True
+        }
+        jnr = JupyterNotebookRecipe(
+            "name", BAREBONES_NOTEBOOK, parameters=parameters)
+        self.assertEqual(jnr.parameters, parameters)
+
+    def testJupyterNotebookRecipeSetupRequirements(self)->None:
+        requirements = {
+            "a": 1,
+            "b": True
+        }
+        jnr = JupyterNotebookRecipe(
+            "name", BAREBONES_NOTEBOOK, requirements=requirements)
+        self.assertEqual(jnr.requirements, requirements)
+
+    def testJupyterNotebookRecipeSetupSource(self)->None:
+        source = "source.ipynb"
+        jnr = JupyterNotebookRecipe(
+            "name", BAREBONES_NOTEBOOK, source=source)
+        self.assertEqual(jnr.source, source)
diff --git a/tests/testValidation.py b/tests/testValidation.py
new file mode 100644
index 0000000..ec5c6c8
--- /dev/null
+++ b/tests/testValidation.py
@@ -0,0 +1,87 @@
+
+import unittest
+
+from typing import Any
+
+from core.correctness.validation import check_input, valid_string, valid_dict
+from core.correctness.vars import VALID_NAME_CHARS
+
+
+class CorrectnessTests(unittest.TestCase):
+    def setUp(self)->None:
+        return super().setUp()
+
+    def tearDown(self)->None:
+        return super().tearDown()
+
+    def testCheckInputValid(self)->None:
+        check_input(1, int)
+        check_input(0, int)
+        check_input(False, bool)
+        check_input(True, bool)
+        check_input(1, Any)
+        
+    def testCheckInputMistyped(self)->None:
+        with self.assertRaises(TypeError):
+            check_input(1, str)
+
+    def testCheckInputOrNone(self)->None:
+        check_input(None, int, or_none=True)
+        with self.assertRaises(TypeError):
+            check_input(None, int, or_none=False)
+
+    def testValidStringValid(self)->None:
+        valid_string("David_Marchant", VALID_NAME_CHARS)
+
+    def testValidStringEmptyString(self)->None:
+        valid_string("", VALID_NAME_CHARS, min_length=0)
+
+    def testValidStringNoValidChars(self)->None:
+        with self.assertRaises(ValueError):
+            valid_string("David_Marchant", "")
+
+    def testValidStringMistypedInput(self)->None:
+        with self.assertRaises(TypeError):
+            valid_string(1, VALID_NAME_CHARS)
+        with self.assertRaises(TypeError):
+            valid_string("David_Marchant", 1)
+
+    def testValidStringMissingChars(self)->None:
+        with self.assertRaises(ValueError):
+            valid_string("David Marchant", VALID_NAME_CHARS)
+
+    def testValidStringInsufficientLength(self)->None:
+        with self.assertRaises(ValueError):
+            valid_string("", VALID_NAME_CHARS)
+            valid_string("David Marchant", VALID_NAME_CHARS, min_length=50)
+
+    def testValidDictMinimum(self)->None:
+        valid_dict({"a": 0, "b": 1}, str, int, strict=False)
+
+    def testValidDictAnyKeyType(self)->None:
+        valid_dict({"a": 0, "b": 1}, Any, int, strict=False)
+
+    def testValidDictAnyValueType(self)->None:
+        valid_dict({"a": 0, "b": 1}, str, Any, strict=False)
+
+    def testValidDictAllRequiredKeys(self)->None:
+        valid_dict({"a": 0, "b": 1}, str, int, required_keys=["a", "b"])
+
+    def testValidDictAllRequiredOrOptionalKeys(self)->None:
+        valid_dict(
+            {"a": 0, "b": 1}, str, int, required_keys=["a"], 
+            optional_keys=["b"])
+
+    def testValidDictExtraKeys(self)->None:
+        valid_dict(
+            {"a": 0, "b": 1, "c": 2}, str, int, required_keys=["a"], 
+            optional_keys=["b"], strict=False)
+
+    def testValidDictMissingRequiredKeys(self)->None:
+        with self.assertRaises(KeyError):
+            valid_dict(
+                {"a": 0, "b": 1}, str, int, required_keys=["a", "b", "c"])
+
+    def testValidDictOverlyStrict(self)->None:
+        with self.assertRaises(ValueError):
+            valid_dict({"a": 0, "b": 1}, str, int)