chore: move dependencies, add more tests

tests/test_catalogue.py

@@ -0,0 +1,48 @@
+"""Tests for the Catalogue class, which interacts with the library catalogue."""
+
+import pytest
+from pytest_mock import MockerFixture
+
+from src.bibapi.catalogue import Catalogue
+
+
+class TestCatalogue:
+    """Tests for the Catalogue class."""
+
+    def test_check_book_exists(self, mocker: MockerFixture):
+        """Test the check_book_exists method of the Catalogue class."""
+        catalogue = Catalogue()
+
+        # Mock the get_book_links method to control its output
+        mocker.patch.object(
+            catalogue,
+            "get_book_links",
+            return_value=["link1", "link2"],
+        )
+
+        # Test with a known existing book
+        existing_book_searchterm = "1693321114"
+        assert catalogue.check_book_exists(existing_book_searchterm) is True
+
+        # Change the mock to return an empty list for non-existing book
+        mocker.patch.object(
+            catalogue,
+            "get_book_links",
+            return_value=[],
+        )
+
+        # Test with a known non-existing book
+        non_existing_book_searchterm = "00000000009"
+        assert catalogue.check_book_exists(non_existing_book_searchterm) is False
+
+    def test_no_connection_raises_error(self, mocker: MockerFixture):
+        """Test that a ConnectionError is raised when there is no internet connection."""
+        # Mock the check_connection method to simulate no internet connection
+        mocker.patch.object(
+            Catalogue,
+            "check_connection",
+            return_value=False,
+        )
+
+        with pytest.raises(ConnectionError, match="No internet connection available."):
+            Catalogue()