auto trim TOC, rewrite test to use actual MPC calls

tests/test_get_pdf_info.py

@@ -1,9 +1,6 @@
-from pdf_mcp.server import get_pdf_info
-
-
 class TestGetPdfInfo:
-    def test_basic_metadata(self, basic_pdf):
-        info = get_pdf_info(basic_pdf)
+    def test_basic_metadata(self, basic_pdf, call_tool):
+        info = call_tool("get_pdf_info", filename=basic_pdf)
         assert info["page_count"] == 3
         assert info["metadata"]["title"] == "Test Document"
         assert info["metadata"]["author"] == "Test Author"
@@ -12,18 +9,18 @@ class TestGetPdfInfo:
         assert info["metadata"]["creator"] == "generate.py"
         assert info["is_encrypted"] is False
 
-    def test_filename_returned(self, basic_pdf):
-        info = get_pdf_info(basic_pdf)
+    def test_filename_returned(self, basic_pdf, call_tool):
+        info = call_tool("get_pdf_info", filename=basic_pdf)
         assert info["filename"] == basic_pdf
 
-    def test_single_page_pdf(self, diagrams_pdf):
-        info = get_pdf_info(diagrams_pdf)
+    def test_single_page_pdf(self, diagrams_pdf, call_tool):
+        info = call_tool("get_pdf_info", filename=diagrams_pdf)
         assert info["page_count"] == 1
 
-    def test_multi_page_pdf(self, nested_toc_pdf):
-        info = get_pdf_info(nested_toc_pdf)
+    def test_multi_page_pdf(self, nested_toc_pdf, call_tool):
+        info = call_tool("get_pdf_info", filename=nested_toc_pdf)
         assert info["page_count"] == 9
 
-    def test_search_targets_page_count(self, search_pdf):
-        info = get_pdf_info(search_pdf)
+    def test_search_targets_page_count(self, search_pdf, call_tool):
+        info = call_tool("get_pdf_info", filename=search_pdf)
         assert info["page_count"] == 3