1 files changed, 26 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/makeGlobalObjectReference-01.js b/js/src/jit-test/tests/debug/makeGlobalObjectReference-01.js
new file mode 100644
index 000000000..85f958777
--- /dev/null
+++ b/js/src/jit-test/tests/debug/makeGlobalObjectReference-01.js
@@ -0,0 +1,26 @@
+// Debugger.prototype.makeGlobalObjectReference returns a D.O for a global
+// without adding it as a debuggee.
+
+let g1 = newGlobal();
+let dbg = new Debugger;
+assertEq(dbg.hasDebuggee(g1), false);
+
+let g1w = dbg.makeGlobalObjectReference(g1);
+assertEq(dbg.hasDebuggee(g1), false);
+assertEq(g1w.unsafeDereference(), g1);
+assertEq(g1w, g1w.makeDebuggeeValue(g1));
+
+assertEq(dbg.addDebuggee(g1w), g1w);
+assertEq(dbg.hasDebuggee(g1), true);
+assertEq(dbg.hasDebuggee(g1w), true);
+assertEq(g1w.unsafeDereference(), g1);
+assertEq(g1w, g1w.makeDebuggeeValue(g1));
+
+// makeGlobalObjectReference dereferences CCWs.
+let g2 = newGlobal();
+g2.g1 = g1;
+let g2w = dbg.addDebuggee(g2);
+let g2g1w = g2w.getOwnPropertyDescriptor('g1').value;
+assertEq(g2g1w !== g1w, true);
+assertEq(g2g1w.unwrap(), g1w);
+assertEq(dbg.makeGlobalObjectReference(g2g1w), g1w);