diff --git a/tests/promptgenerator_tests.py b/tests/promptgenerator_tests.py
new file mode 100644
index 00000000..ac5c3a79
--- /dev/null
+++ b/tests/promptgenerator_tests.py
@@ -0,0 +1,99 @@
+# Import the required libraries for unit testing
+import unittest
+import sys
+import os
+
+# Add the path to the "scripts" directory to import the PromptGenerator module
+sys.path.append(os.path.abspath("../scripts"))
+from promptgenerator import PromptGenerator
+
+# Create a test class for the PromptGenerator, subclassed from unittest.TestCase
+class promptgenerator_tests(unittest.TestCase):
+
+    # Set up the initial state for each test method by creating an instance of PromptGenerator
+    def setUp(self):
+        self.generator = PromptGenerator()
+
+    # Test whether the add_constraint() method adds a constraint to the generator's constraints list
+    def test_add_constraint(self):
+        constraint = "Constraint1"
+        self.generator.add_constraint(constraint)
+        self.assertIn(constraint, self.generator.constraints)
+
+    # Test whether the add_command() method adds a command to the generator's commands list
+    def test_add_command(self):
+        command_label = "Command Label"
+        command_name = "command_name"
+        args = {"arg1": "value1", "arg2": "value2"}
+        self.generator.add_command(command_label, command_name, args)
+        command = {
+            "label": command_label,
+            "name": command_name,
+            "args": args,
+        }
+        self.assertIn(command, self.generator.commands)
+
+    # Test whether the add_resource() method adds a resource to the generator's resources list
+    def test_add_resource(self):
+        resource = "Resource1"
+        self.generator.add_resource(resource)
+        self.assertIn(resource, self.generator.resources)
+
+    # Test whether the add_performance_evaluation() method adds an evaluation to the generator's performance_evaluation list
+    def test_add_performance_evaluation(self):
+        evaluation = "Evaluation1"
+        self.generator.add_performance_evaluation(evaluation)
+        self.assertIn(evaluation, self.generator.performance_evaluation)
+
+    # Test whether the generate_prompt_string() method generates a prompt string with all the added constraints, commands, resources and evaluations
+    def test_generate_prompt_string(self):
+        constraints = ["Constraint1", "Constraint2"]
+        commands = [
+            {
+                "label": "Command1",
+                "name": "command_name1",
+                "args": {"arg1": "value1"},
+            },
+            {
+                "label": "Command2",
+                "name": "command_name2",
+                "args": {},
+            },
+        ]
+        resources = ["Resource1", "Resource2"]
+        evaluations = ["Evaluation1", "Evaluation2"]
+
+        # Add all the constraints, commands, resources, and evaluations to the generator
+        for constraint in constraints:
+            self.generator.add_constraint(constraint)
+        for command in commands:
+            self.generator.add_command(
+                command["label"], command["name"], command["args"])
+        for resource in resources:
+            self.generator.add_resource(resource)
+        for evaluation in evaluations:
+            self.generator.add_performance_evaluation(evaluation)
+
+        # Generate the prompt string and verify its correctness
+        prompt_string = self.generator.generate_prompt_string()
+        self.assertIsNotNone(prompt_string)
+        for constraint in constraints:
+            self.assertIn(constraint, prompt_string)
+        for command in commands:
+            self.assertIn(command["name"], prompt_string)
+        
+        # Check for each key-value pair in the command args dictionary
+        for key, value in command["args"].items():
+            self.assertIn(f'"{key}": "{value}"', prompt_string)
+        for resource in resources:
+            self.assertIn(resource, prompt_string)
+        for evaluation in evaluations:
+            self.assertIn(evaluation, prompt_string)
+        self.assertIn("constraints", prompt_string.lower())
+        self.assertIn("commands", prompt_string.lower())
+        self.assertIn("resources", prompt_string.lower())
+        self.assertIn("performance evaluation", prompt_string.lower())
+
+# Run the tests when this script is executed
+if __name__ == '__main__':
+    unittest.main()