Added a web-frontend to add companies to the search queue. (#375)

This webfrontent adds a company to the search que or resets the search
que entry to be searched again.
This will allow for directed growth or an initiallisation.

---------

Co-authored-by: Tristan Nolde <tristan.nolde@yahoo.de>

tests/ui/about_test.py

@@ -1,5 +1,5 @@
 """Tests if the about page can be created."""
-from dash.development.base_component import Component
+from dash import html
 
 from aki_prj23_transparenzregister.ui import app
 from aki_prj23_transparenzregister.ui.pages import about
@@ -10,6 +10,4 @@ _ = app
 def test_layout() -> None:
     """Checks if the about page can be created."""
     result = about.layout()
-    assert isinstance(result, list)
-    for e in result:
-        assert isinstance(e, Component)
+    assert isinstance(result, html.Div)

tests/ui/search_queue_test.py

@@ -0,0 +1,64 @@
+"""Tests if the search que page can be created."""
+from collections.abc import Generator
+
+import dash
+import pytest
+from dash import html
+from sqlalchemy.orm import Session
+
+from aki_prj23_transparenzregister.ui import app
+from aki_prj23_transparenzregister.ui.pages import search_queue
+from aki_prj23_transparenzregister.ui.session_handler import SessionHandler
+from aki_prj23_transparenzregister.utils.sql import entities
+
+_ = app
+
+
+def test_layout() -> None:
+    """Checks if the about page can be created."""
+    result = search_queue.layout()
+    assert isinstance(result, html.Div)
+
+
+@pytest.mark.parametrize("input_text", ["", None])
+def test_empty(input_text: str | None) -> None:
+    """Tests if nothing happens on an empty string."""
+    assert search_queue.add_company_to_search_que(input_text) == dash.no_update
+
+
+@pytest.mark.parametrize("input_text", ["test"])
+def test_missing_db(input_text: str | None) -> None:
+    """Tests what happens if no db is defined."""
+    with pytest.raises(ValueError, match="No session created."):
+        search_queue.add_company_to_search_que(input_text)
+
+
+@pytest.fixture()
+def _set_session(full_db: Session) -> Generator[None, None, None]:
+    """Sets a session for the dash application to be used."""
+    SessionHandler.session = full_db
+    yield
+    SessionHandler.session = None
+
+
+@pytest.mark.usefixtures("_set_session")
+@pytest.mark.parametrize("name", ["added-company", "second", "third"])
+def test_add_company_to_queue(name: str) -> None:
+    """Adds a company to the search que via the webgui."""
+    db = SessionHandler.session
+    assert db
+    assert not (
+        db.query(entities.MissingCompany)
+        .filter(entities.MissingCompany.name == name)
+        .first()
+    )
+    for n_lines in [1000, 2000, 3000]:
+        search_queue.add_company_to_search_que(name)
+        result = (
+            db.query(entities.MissingCompany)
+            .filter(entities.MissingCompany.name == name)
+            .first()
+        )
+        assert result
+        assert result.number_of_links == n_lines  # noqa: PLR2004
+        del result