chore: move dependencies, add more tests

src/bibapi/__init__.py

@@ -1,4 +1,5 @@
 from .schemas.api_types import (
+    ALMASchema,
     DNBSchema,
     HBZSchema,
     HebisSchema,
@@ -89,5 +90,3 @@ class HBZ(_Api):
         self.prefix = HBZSchema.ARGSCHEMA.value
         self.library_identifier = HBZSchema.LIBRARY_NAME_LOCATION_FIELD.value
         super().__init__(self.site, self.url, self.prefix, self.library_identifier)
-
-

src/bibapi/catalogue.py

@@ -327,3 +327,7 @@ class Catalogue:
         if link is None:
             return None
         return link.library_location
+
+    def check_book_exists(self, searchterm: str) -> bool:
+        links = self.get_book_links(searchterm)
+        return len(links) > 0

src/bibapi/schemas/__init__.py

@@ -0,0 +1 @@
+"""Schemas for the provided APIs."""

src/bibapi/schemas/errors.py

@@ -0,0 +1,10 @@
+class BibAPIError(Exception):
+    """Base class for all BibAPI errors."""
+
+
+class CatalogueError(BibAPIError):
+    """Raised when there is an error with the library catalogue API."""
+
+
+class NetworkError(BibAPIError):
+    """Raised when there is a network-related error."""

src/bibapi/schemas/marcxml.py

@@ -1,5 +1,4 @@
 from dataclasses import dataclass, field
-from typing import list
 
 
 # --- MARC XML structures ---