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// Test that the ErrorCopier copies the optional "cause" property of error objects.
let g = newGlobal({newCompartment: true});
let dbg = new Debugger(g);
let hits = 0;
dbg.onDebuggerStatement = function (frame) {
hits++;
// Use |getVariable()| so we can easily throw our custom error from the
// with-statement scope.
let caught;
try {
frame.environment.getVariable("x");
} catch (e) {
caught = e;
}
// The ErrorCopier copied error, so |caught| isn't equal to |g.error|.
assertEq(caught !== g.error, true);
// Ensure the "cause" property is correctly copied.
assertEq(caught.cause, g.cause);
};
// The error must be same-compartment with the debugger compartment for the
// ErrorCopier.
g.eval(`
var cause = new Object();
var error = new Error("", {cause});
`);
// Scope must be outside of debugger compartment to avoid triggering a
// DebuggeeWouldRun error.
let scope = {
get x() {
throw g.error;
}
};
g.eval(`
function f(scope) {
with (scope) {
debugger;
}
}
`);
g.f(scope);
assertEq(hits, 1);
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