void () { String line = "some.relatively.long.property.name=And here's some property value for that really unique key, nice to have\n"; String text = StringUtil.repeat(line, 20000) + "<caret>\n" + StringUtil.repeat(line, 10000); configureFromFileText("performance.properties", text); PlatformTestUtil.startPerformanceTest("Property files editing", 2500, () -> { type("aaaa=bbb"); PsiDocumentManager.getInstance(getProject()).commitAllDocuments(); }).assertTiming(); }