fix(abort_button): abort button added; some minor fixes

tests/unit_tests/test_abort_button.py

@@ -0,0 +1,26 @@
+# pylint: disable=missing-function-docstring, missing-module-docstring, unused-import
+
+import pytest
+
+from bec_widgets.widgets.button_abort.button_abort import AbortButton
+
+from .client_mocks import mocked_client
+
+
+@pytest.fixture
+def abort_button(qtbot, mocked_client):
+    widget = AbortButton(client=mocked_client)
+    qtbot.addWidget(widget)
+    qtbot.waitExposed(widget)
+    yield widget
+
+
+def test_abort_button(abort_button):
+    assert abort_button.button.text() == "Abort"
+    assert (
+        abort_button.button.styleSheet()
+        == "background-color:  #666666; color: white; font-weight: bold; font-size: 12px;"
+    )
+    abort_button.button.click()
+    assert abort_button.queue.request_scan_abortion.called
+    abort_button.close()