1 files changed, 62 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Memory-takeCensus-11.js b/js/src/jit-test/tests/debug/Memory-takeCensus-11.js
new file mode 100644
index 0000000000..50388ef784
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Memory-takeCensus-11.js
@@ -0,0 +1,62 @@
+// |jit-test| skip-if: isLcovEnabled()
+
+// NOTE: Code coverage keeps top-level script alive even if normally it would be
+//       GC'd. Skip this test in that case.
+
+// Check byte counts produced by takeCensus.
+
+const g = newGlobal({newCompartment: true });
+g.evaluate("setJitCompilerOption('ion.warmup.trigger', 1000)",
+           {
+             forceFullParse: true,
+           });
+
+const dbg = new Debugger(g);
+
+g.evaluate("function one() {}",
+           {
+             fileName: "one.js",
+             forceFullParse: true,
+           });
+g.evaluate(`function two1() {}
+            function two2() {}`,
+           {
+             fileName: "two.js",
+             forceFullParse: true,
+           });
+g.evaluate(`function three1() {}
+            function three2() {}
+            function three3() {}`,
+           {
+             fileName: "three.js",
+             forceFullParse: true,
+           });
+
+const report = dbg.memory.takeCensus({
+  breakdown: {
+    by: "coarseType",
+    scripts: {
+      by: "filename",
+      then: { by: "count", count: true, bytes: false },
+      noFilename: {
+        by: "internalType",
+        then: { by: "count", count: true, bytes: false }
+      }
+    },
+
+    // Not really interested in these, but they're here for completeness.
+    objects: { by: "count", count: true, byte: false },
+    strings: { by: "count", count: true, byte: false },
+    other:   { by: "count", count: true, byte: false },
+  }
+});
+
+print(JSON.stringify(report, null, 4));
+
+assertEq(report.scripts["one.js"].count, 1);
+assertEq(report.scripts["two.js"].count, 2);
+assertEq(report.scripts["three.js"].count, 3);
+
+const noFilename = report.scripts.noFilename;
+assertEq(!!noFilename, true);
+assertEq(typeof noFilename, "object");