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// Test that collectCoverageInfo cannot be changed when debuggee frames are on
// the stack, even with multiple interleaved globals where only some are debuggees.
var g1 = newGlobal({ newCompartment: true });
var g2 = newGlobal({ newCompartment: true });
var g3 = newGlobal({ newCompartment: true });
var dbg = new Debugger();
// Add g1 and g3 as debuggees, but not g2
dbg.addDebuggee(g1);
dbg.addDebuggee(g3);
// Set up functions in each global that call into the next
g1.g2 = g2;
g2.g3 = g3;
g1.evaluate(`
function func1() {
return g2.func2();
}
`);
g2.evaluate(`
function func2() {
return g3.func3();
}
`);
g3.evaluate(`
function func3() {
debugger;
return 42;
}
`);
// Test 1: Cannot enable collectCoverageInfo while interleaved debuggee frames
// are on stack (g1 -> g2 -> g3, where g1 and g3 are debuggees but g2 is not)
var enableAttempted = false;
dbg.onDebuggerStatement = function() {
// At this point, the stack is:
// g3.func3 (debuggee) -> g2.func2 (non-debuggee) -> g1.func1 (debuggee)
var caught = false;
try {
dbg.collectCoverageInfo = true;
enableAttempted = true;
} catch (e) {
caught = true;
assertEq(e.message, "can't start debugging: a debuggee script is on the stack");
}
assertEq(caught, true);
assertEq(enableAttempted, false);
};
g1.func1();
dbg.onDebuggerStatement = undefined;
// Test 2: Cannot disable collectCoverageInfo while interleaved debuggee frames
// are on stack
dbg.collectCoverageInfo = true;
var disableAttempted = false;
dbg.onDebuggerStatement = function() {
// Stack: g3.func3 (debuggee) -> g2.func2 (non-debuggee) -> g1.func1 (debuggee)
var caught = false;
try {
dbg.collectCoverageInfo = false;
disableAttempted = true;
} catch (e) {
caught = true;
assertEq(e.message, "can't start debugging: a debuggee script is on the stack");
}
assertEq(caught, true);
assertEq(disableAttempted, false);
};
g1.func1();
dbg.onDebuggerStatement = undefined;
// Test 3: Can toggle when only non-debuggee frames are on stack
// Set up a callback in g2 (non-debuggee) that toggles coverage
g2.dbg = dbg;
g2.evaluate(`
function toggleCoverage() {
// At this point, only g2 frames are on the stack (non-debuggee)
// So toggling should succeed
dbg.collectCoverageInfo = false;
dbg.collectCoverageInfo = true;
dbg.collectCoverageInfo = false;
}
`);
g2.toggleCoverage();
// Test 4: More complex interleaving - g1 -> g2 -> g1 -> g3
g2.g1 = g1;
g1.g3 = g3;
g2.evaluate(`
function func2b() {
return g1.func1b();
}
`);
g1.evaluate(`
function func1b() {
return g3.func3();
}
function func1c() {
return g2.func2b();
}
`);
dbg.collectCoverageInfo = true;
var complexDisableAttempted = false;
dbg.onDebuggerStatement = function() {
// Stack: g3.func3 (debuggee) -> g1.func1b (debuggee) ->
// g2.func2b (non-debuggee) -> g1.func1c (debuggee)
var caught = false;
try {
dbg.collectCoverageInfo = false;
complexDisableAttempted = true;
} catch (e) {
caught = true;
assertEq(e.message, "can't start debugging: a debuggee script is on the stack");
}
assertEq(caught, true);
assertEq(complexDisableAttempted, false);
};
g1.func1c();
dbg.onDebuggerStatement = undefined;
// Clean up
dbg.collectCoverageInfo = false;