1 files changed, 80 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Environment-inspectable-01.js b/js/src/jit-test/tests/debug/Environment-inspectable-01.js
new file mode 100644
index 000000000..ee5897833
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Environment-inspectable-01.js
@@ -0,0 +1,80 @@
+// Environments are only inspectable while their globals are debuggees.
+
+load(libdir + 'asserts.js');
+
+var g1 = newGlobal();
+var g2 = newGlobal();
+g2.g1 = g1;
+g1.g2 = g2;
+
+g1.eval('function f(xf) { return function h(xh) { debugger; } }');
+g1.eval('var h = f("value of xf");');
+
+// To ensure that xk gets located on the heap, and thus outlives its stack frame, we
+// store a function that captures it here. Kind of a kludge.
+g2.eval('var capture;');
+g2.eval('function k(xk) { capture = function () { return xk; }; g1.h("value of xh"); }');
+
+var dbg = new Debugger;
+dbg.addDebuggee(g1);
+dbg.addDebuggee(g2);
+
+dbg.onDebuggerStatement = debuggerHandler;
+
+var log = '';
+
+g1.eval('g2.k("value of xk");');
+
+var he, ke, ee;
+
+function debuggerHandler(frame) {
+  log += 'd';
+
+  assertEq(frame.type, 'call');
+  he = frame.environment;
+
+  assertEq(frame.older.type, 'call');
+  ke = frame.older.environment;
+
+  assertEq(frame.older.older.type, 'eval');
+  ee = frame.older.older.environment;
+
+  assertEq(he.inspectable, true);
+  assertEq(he.getVariable('xh'), 'value of xh');
+  assertEq(he.parent.parent.getVariable('xf'), 'value of xf');
+  assertEq(ke.inspectable, true);
+  assertEq(ke.getVariable('xk'), 'value of xk');
+  assertEq(ee.inspectable, true);
+  assertEq(ee.type, 'declarative');
+  assertEq(ee.parent.type, 'object');
+
+  dbg.removeDebuggee(g2);
+
+  assertEq(he.inspectable, true);
+  assertEq(he.type, 'declarative');
+  assertEq(ke.inspectable, false);
+  assertThrowsInstanceOf(() => ke.getVariable('xk'), Error);
+  assertEq(ee.inspectable, true);
+  assertEq(ee.type, 'declarative');
+  assertEq(ee.parent.type, 'object');
+
+  dbg.removeDebuggee(g1);
+
+  assertEq(he.inspectable, false);
+  assertThrowsInstanceOf(() => he.getVariable('xh'), Error);
+  assertEq(ke.inspectable, false);
+  assertThrowsInstanceOf(() => ke.getVariable('xk'), Error);
+  assertEq(ee.inspectable, false);
+  assertThrowsInstanceOf(() => ee.type, Error);
+}
+
+assertEq(log, 'd');
+
+dbg.addDebuggee(g2);
+
+assertEq(he.inspectable, false);
+assertThrowsInstanceOf(() => he.getVariable('xh'), Error);
+assertEq(ke.inspectable, true);
+assertEq(ke.getVariable('xk'), 'value of xk');
+assertEq(ee.inspectable, false);
+assertThrowsInstanceOf(() => ee.type, Error);