More tolerance on memory leak tests (#137)

* More tolerance on Raw cell addition

* More robust file-editor

Author: fcollonval

memory-leaks/tests/cell.test.mjs

@@ -11,7 +11,7 @@ describe("# Cell memory leaks", () => {
         // Markdown cell
         { leak: null, objects: 867, collections: 28 },
         // Raw cell
-        { leak: true, objects: 673, collections: 28 },
+        { leak: true, objects: 706, collections: 28 },
       ],
     });
   });

memory-leaks/tests/file-editor.test.mjs

@@ -3,6 +3,6 @@ import * as scenario from "./file-editor.mjs";
 
 describe("# File editor memory leaks", () => {
   it("Opening a text file", async () => {
-    await testScenario(scenario, { expectations: [{ objects: 648, collections: 4 }] });
+    await testScenario(scenario, { expectations: [{ objects: 654, collections: 4 }] });
   });
 });