function getLabel(dbg, index) {
return findElement(dbg, "scopeNode", index).innerText;
}
function getValue(dbg, index) {
return findElement(dbg, "scopeValue", index).innerText;
}
async function testReturnValue(dbg, val) {
invokeInTab("return_something", val);
await waitForPaused(dbg);
// "Step in" 3 times to get to the point where the debugger can
// see the return value.
await stepIn(dbg);
await stepIn(dbg);
await stepIn(dbg);
is(getLabel(dbg, 1), "return_something", "check for return_something");
// We don't show "undefined" but we do show other falsy values.
let label = getLabel(dbg, 2);
if (val === "undefined") {
ok(label !== "<return>", "do not show <return> for undefined");
} else {
is(label, "<return>", "check for <return>");
// The "uneval" call here gives us the way one would write `val` as
// a JavaScript expression, similar to the way the debugger
// displays values, so this test works when `val` is a string.
is(getValue(dbg, 2), uneval(val), `check value is ${uneval(val)}`);
}
await resume(dbg);
assertNotPaused(dbg);
}
async function testThrowValue(dbg, val) {
invokeInTab("throw_something", val);
await waitForPaused(dbg);
// "Step in" once to get to the point where the debugger can see the
// exception.
await stepIn(dbg);
is(getLabel(dbg, 1), "callee", "check for callee");
is(getLabel(dbg, 2), "<exception>", "check for <exception>");
// The "uneval" call here gives us the way one would write `val` as
// a JavaScript expression, similar to the way the debugger
// displays values, so this test works when `val` is a string.
is(getValue(dbg, 2), uneval(val), `check exception is ${uneval(val)}`);
await resume(dbg);
await waitForPaused(dbg);
await resume(dbg);
assertNotPaused(dbg);
}
add_task(async function() {
const dbg = await initDebugger("doc-return-values.html");
await togglePauseOnExceptions(dbg, true, false);
await testReturnValue(dbg, "to sender");
await testThrowValue(dbg, "a fit");
});