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function waitForBackground(isBackground, testStage) {
if (WorkerTestUtils.IsRunningInBackground() != isBackground) {
setTimeout(waitForBackground, 100, isBackground, testStage);
} else {
postMessage({
stage: testStage,
status: "PASS",
msg: "",
});
}
}
onmessage = async e => {
switch (e.data) {
case "CheckIsBackground":
waitForBackground(true, e.data);
break;
case "CheckIsForeground":
case "CheckIsForegroundAgain":
waitForBackground(false, e.data);
break;
}
};