diff --git a/week4/community-contributions/salah/unit-tests-generator/.env.example b/week4/community-contributions/salah/unit-tests-generator/.env.example
new file mode 100644
index 0000000..da1d86d
--- /dev/null
+++ b/week4/community-contributions/salah/unit-tests-generator/.env.example
@@ -0,0 +1 @@
+OPENROUTER_API_KEY=your-api-key-here
diff --git a/week4/community-contributions/salah/unit-tests-generator/app.py b/week4/community-contributions/salah/unit-tests-generator/app.py
new file mode 100644
index 0000000..f95ade0
--- /dev/null
+++ b/week4/community-contributions/salah/unit-tests-generator/app.py
@@ -0,0 +1,35 @@
+import gradio as gr
+from test_generator import generate_tests
+
+def create_interface():
+    with gr.Blocks(title="Unit Test Generator") as ui:
+        gr.Markdown("# Unit Test Generator")
+        gr.Markdown("Paste your Python code and get AI-generated unit tests")
+
+        with gr.Row():
+            with gr.Column(scale=1):
+                code_input = gr.Code(
+                    label="Your Code",
+                    language="python",
+                    lines=15
+                )
+                generate_btn = gr.Button("Generate Tests", variant="primary")
+
+            with gr.Column(scale=1):
+                tests_output = gr.Textbox(
+                    label="Generated Tests",
+                    lines=15,
+                    interactive=False
+                )
+
+        generate_btn.click(
+            fn=generate_tests,
+            inputs=[code_input],
+            outputs=[tests_output]
+        )
+
+    return ui
+
+def launch():
+    ui = create_interface()
+    ui.launch(server_name="localhost", server_port=7860)
diff --git a/week4/community-contributions/salah/unit-tests-generator/main.py b/week4/community-contributions/salah/unit-tests-generator/main.py
new file mode 100644
index 0000000..b43845c
--- /dev/null
+++ b/week4/community-contributions/salah/unit-tests-generator/main.py
@@ -0,0 +1,17 @@
+#!/usr/bin/env python3
+
+import os
+from dotenv import load_dotenv
+from app import launch
+
+load_dotenv()
+
+if __name__ == "__main__":
+    api_key = os.getenv("OPENROUTER_API_KEY")
+    if not api_key:
+        print("Error: OPENROUTER_API_KEY not set in .env")
+        exit(1)
+
+    print("Starting Unit Test Generator...")
+    print("Open http://localhost:7860 in your browser")
+    launch()
diff --git a/week4/community-contributions/salah/unit-tests-generator/test_generator.py b/week4/community-contributions/salah/unit-tests-generator/test_generator.py
new file mode 100644
index 0000000..402a239
--- /dev/null
+++ b/week4/community-contributions/salah/unit-tests-generator/test_generator.py
@@ -0,0 +1,41 @@
+import os
+from openai import OpenAI
+from dotenv import load_dotenv
+
+load_dotenv()
+
+client = OpenAI(
+    api_key=os.getenv("OPENROUTER_API_KEY"),
+    base_url="https://openrouter.ai/api/v1"
+)
+
+MODEL = os.getenv("SECURECODE_MODEL", "meta-llama/llama-3.1-8b-instruct:free")
+
+SYSTEM_PROMPT = """You are a Python testing expert.
+Generate pytest unit tests for the given code.
+Include:
+- Happy path tests
+- Edge cases
+- Error handling tests
+Keep tests simple and clear."""
+
+def generate_tests(code):
+    """Generate unit tests for the given code."""
+    try:
+        response = client.chat.completions.create(
+            model=MODEL,
+            messages=[
+                {"role": "system", "content": SYSTEM_PROMPT},
+                {"role": "user", "content": f"Generate tests for this code:\n\n{code}"}
+            ],
+            stream=True
+        )
+
+        result = ""
+        for chunk in response:
+            if chunk.choices[0].delta.content:
+                result += chunk.choices[0].delta.content
+                yield result
+
+    except Exception as e:
+        yield f"Error: {str(e)}"