Added two more tests for settings key to display format cases

src/vs/workbench/contrib/preferences/test/browser/settingsTreeModels.test.ts

@@ -101,6 +101,20 @@ suite('SettingsTree', () => {
 				category: 'Something Else',
 				label: 'Etc'
 			});
+
+		assert.deepEqual(
+			settingKeyToDisplayFormat('foo.1leading.number'),
+			{
+				category: 'Foo › 1leading',
+				label: 'Number'
+			});
+
+		assert.deepEqual(
+			settingKeyToDisplayFormat('foo.1Leading.number'),
+			{
+				category: 'Foo › 1 Leading',
+				label: 'Number'
+			});
 	});
 
 	test('parseQuery', () => {