Update test_style.py

Author: Maru5er

pandas/tests/io/formats/style/test_style.py

@@ -487,10 +487,10 @@ def test_repr_html_ok(self, styler):
 
     def test_repr_html_mathjax(self, styler):
         # gh-19824 / 41395
-        assert "tex2jax_ignore" and "mathjax_ignore" not in styler._repr_html_()
+        assert "tex2jax_ignore" not in styler._repr_html_() and "mathjax_ignore" not in styler._repr_html_()
 
         with option_context("styler.html.mathjax", False):
-            assert "tex2jax_ignore" and "mathjax_ignore" in styler._repr_html_()
+            assert "tex2jax_ignore" in styler._repr_html_() and "mathjax_ignore" in styler._repr_html_()
 
     def test_update_ctx(self, styler):
         styler._update_ctx(DataFrame({"A": ["color: red", "color: blue"]}))