diff --git a/src/main.py b/src/main.py
index 556b3e1d..e11cebcc 100644
--- a/src/main.py
+++ b/src/main.py
@@ -175,7 +175,7 @@ async def rate_limit_exception_handler(request: Request, exc: Exception) -> Resp
 app.add_middleware(TrustedHostMiddleware, allowed_hosts=allowed_hosts)
 
 # Set up template rendering
-templates = Jinja2Templates(directory="templates")
+templates = Jinja2Templates(directory="src/templates")
 
 
 @app.get("/health")
diff --git a/tests/test_flow_integration.py b/tests/test_flow_integration.py
new file mode 100644
index 00000000..a8b84f57
--- /dev/null
+++ b/tests/test_flow_integration.py
@@ -0,0 +1,145 @@
+"""
+Integration tests for GitIngest.
+These tests cover core functionalities, edge cases, and concurrency handling.
+"""
+
+import shutil
+from concurrent.futures import ThreadPoolExecutor
+from pathlib import Path
+from unittest.mock import patch
+
+import pytest
+from fastapi.testclient import TestClient
+
+from main import app
+
+BASE_DIR = Path(__file__).resolve().parent.parent
+TEMPLATE_DIR = BASE_DIR / "src" / "templates"
+
+
+@pytest.fixture(scope="module")
+def test_client():
+    """Create a test client fixture."""
+    with TestClient(app) as client:
+        client.headers.update({"Host": "localhost"})
+        yield client
+
+
+@pytest.fixture(scope="module", autouse=True)
+def mock_templates():
+    """Mock Jinja2 template rendering to bypass actual file loading."""
+    with patch("starlette.templating.Jinja2Templates.TemplateResponse") as mock_template:
+        mock_template.return_value = "Mocked Template Response"
+        yield mock_template
+
+
+def cleanup_temp_directories():
+    temp_dir = Path("/tmp/gitingest")
+    if temp_dir.exists():
+        try:
+            shutil.rmtree(temp_dir)
+        except PermissionError as e:
+            print(f"Error cleaning up {temp_dir}: {e}")
+
+
+@pytest.fixture(scope="module", autouse=True)
+def cleanup():
+    """Cleanup temporary directories after tests."""
+    yield
+    cleanup_temp_directories()
+
+
+@pytest.mark.asyncio
+async def test_remote_repository_analysis(test_client):  # pylint: disable=redefined-outer-name
+    """Test the complete flow of analyzing a remote repository."""
+    form_data = {
+        "input_text": "https://github.com/octocat/Hello-World",
+        "max_file_size": "243",
+        "pattern_type": "exclude",
+        "pattern": "",
+    }
+
+    response = test_client.post("/", data=form_data)
+    assert response.status_code == 200, f"Form submission failed: {response.text}"
+    assert "Mocked Template Response" in response.text
+
+
+@pytest.mark.asyncio
+async def test_invalid_repository_url(test_client):  # pylint: disable=redefined-outer-name
+    """Test handling of an invalid repository URL."""
+    form_data = {
+        "input_text": "https://github.com/nonexistent/repo",
+        "max_file_size": "243",
+        "pattern_type": "exclude",
+        "pattern": "",
+    }
+
+    response = test_client.post("/", data=form_data)
+    assert response.status_code == 200, f"Request failed: {response.text}"
+    assert "Mocked Template Response" in response.text
+
+
+@pytest.mark.asyncio
+async def test_large_repository(test_client):  # pylint: disable=redefined-outer-name
+    """Simulate analysis of a large repository with nested folders."""
+    form_data = {
+        "input_text": "https://github.com/large/repo-with-many-files",
+        "max_file_size": "243",
+        "pattern_type": "exclude",
+        "pattern": "",
+    }
+
+    response = test_client.post("/", data=form_data)
+    assert response.status_code == 200, f"Request failed: {response.text}"
+    assert "Mocked Template Response" in response.text
+
+
+@pytest.mark.asyncio
+async def test_concurrent_requests(test_client):  # pylint: disable=redefined-outer-name
+    """Test handling of multiple concurrent requests."""
+
+    def make_request():
+        form_data = {
+            "input_text": "https://github.com/octocat/Hello-World",
+            "max_file_size": "243",
+            "pattern_type": "exclude",
+            "pattern": "",
+        }
+        response = test_client.post("/", data=form_data)
+        assert response.status_code == 200, f"Request failed: {response.text}"
+        assert "Mocked Template Response" in response.text
+
+    with ThreadPoolExecutor(max_workers=5) as executor:
+        futures = [executor.submit(make_request) for _ in range(5)]
+        for future in futures:
+            future.result()
+
+
+@pytest.mark.asyncio
+async def test_large_file_handling(test_client):  # pylint: disable=redefined-outer-name
+    """Test handling of repositories with large files."""
+    form_data = {
+        "input_text": "https://github.com/octocat/Hello-World",
+        "max_file_size": "1",
+        "pattern_type": "exclude",
+        "pattern": "",
+    }
+
+    response = test_client.post("/", data=form_data)
+    assert response.status_code == 200, f"Request failed: {response.text}"
+    assert "Mocked Template Response" in response.text
+
+
+@pytest.mark.asyncio
+async def test_repository_with_patterns(test_client):  # pylint: disable=redefined-outer-name
+    """Test repository analysis with include/exclude patterns."""
+    form_data = {
+        "input_text": "https://github.com/octocat/Hello-World",
+        "max_file_size": "243",
+        "pattern_type": "include",
+        "pattern": "*.md",
+    }
+
+    response = test_client.post("/", data=form_data)
+    assert response.status_code == 200, f"Request failed: {response.text}"
+    assert "Mocked Template Response" in response.text