1 files changed, 55 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Memory-drainAllocationsLog-17.js b/js/src/jit-test/tests/debug/Memory-drainAllocationsLog-17.js
new file mode 100644
index 000000000..c48afc0f5
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Memory-drainAllocationsLog-17.js
@@ -0,0 +1,55 @@
+// Test drainAllocationsLog() and byte sizes.
+
+const root = newGlobal();
+const dbg = new Debugger();
+const wrappedRoot = dbg.addDebuggee(root);
+
+root.eval(
+  `
+  function AsmModule(stdlib, foreign, heap) {
+    "use asm";
+
+    function test() {
+      return 5|0;
+    }
+
+    return { test: test };
+  }
+  const buf = new ArrayBuffer(1024*8);
+
+  function Ctor() {}
+  this.tests = [
+    { name: "new UInt8Array(256)", fn: () => new Uint8Array(256)         },
+    { name: "arguments",           fn: function () { return arguments; } },
+    { name: "asm.js module",       fn: () => AsmModule(this, {}, buf)    },
+    { name: "/2manyproblemz/g",    fn: () => /2manyproblemz/g            },
+    { name: "iterator",            fn: () => [1,2,3][Symbol.iterator]()  },
+    { name: "Error()",             fn: () => Error()                     },
+    { name: "new Ctor",            fn: () => new Ctor                    },
+    { name: "{}",                  fn: () => ({})                        },
+    { name: "new Date",            fn: () => new Date                    },
+    { name: "[1,2,3]",             fn: () => [1,2,3]                     },
+  ];
+  `
+);
+
+for (let { name, fn } of root.tests) {
+  print("Test: " + name);
+
+  dbg.memory.trackingAllocationSites = true;
+
+  fn();
+
+  let entries = dbg.memory.drainAllocationsLog();
+
+  for (let {size} of entries) {
+    print("  " + size + " bytes");
+    // We should get some kind of byte size. We aren't testing that in depth
+    // here, it is tested pretty thoroughly in
+    // js/src/jit-test/tests/heap-analysis/byteSize-of-object.js.
+    assertEq(typeof size, "number");
+    assertEq(size > 0, true);
+  }
+
+  dbg.memory.trackingAllocationSites = false;
+}