fix: Deprecate the Cells.pop function (#608)

src/pytest_html/nextgen.py

@@ -58,6 +58,12 @@ class BaseReport:
                 html = html.replace("col", "data-column-type")
             self._html[index] = html
 
+        def pop(self, *args):
+            warnings.warn(
+                "'pop' is deprecated and no longer supported.",
+                DeprecationWarning,
+            )
+
     class Report:
         def __init__(self, title, config):
             self._config = config

testing/test_unit.py

@@ -24,3 +24,19 @@ def test_duration_format_deprecation_warning(pytester):
             "*DeprecationWarning: 'duration_formatter'*",
         ],
     )
+
+
+def test_cells_pop_deprecation_warning(pytester):
+    pytester.makeconftest(
+        """
+        def pytest_html_results_table_row(cells):
+            cells.pop()
+    """
+    )
+    pytester.makepyfile("def test_pass(): pass")
+    result = run(pytester)
+    result.stdout.fnmatch_lines(
+        [
+            "*DeprecationWarning: 'pop' is deprecated*",
+        ],
+    )