1 files changed, 108 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Memory-takeCensus-06.js b/js/src/jit-test/tests/debug/Memory-takeCensus-06.js
new file mode 100644
index 0000000000..02f8de30be
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Memory-takeCensus-06.js
@@ -0,0 +1,108 @@
+// Check Debugger.Memory.prototype.takeCensus handling of 'breakdown' argument.
+
+load(libdir + 'match.js');
+var Pattern = Match.Pattern;
+
+var g = newGlobal({newCompartment: true});
+var dbg = new Debugger(g);
+
+Pattern({ count: Pattern.NATURAL,
+          bytes: Pattern.NATURAL })
+  .assert(dbg.memory.takeCensus({ breakdown: { by: 'count' } }));
+
+let census = dbg.memory.takeCensus({ breakdown: { by: 'count', count: false, bytes: false } });
+assertEq('count' in census, false);
+assertEq('bytes' in census, false);
+
+census = dbg.memory.takeCensus({ breakdown: { by: 'count', count: true,  bytes: false } });
+assertEq('count' in census, true);
+assertEq('bytes' in census, false);
+
+census = dbg.memory.takeCensus({ breakdown: { by: 'count', count: false, bytes: true } });
+assertEq('count' in census, false);
+assertEq('bytes' in census, true);
+
+census = dbg.memory.takeCensus({ breakdown: { by: 'count', count: true,  bytes: true } });
+assertEq('count' in census, true);
+assertEq('bytes' in census, true);
+
+
+// Pattern doesn't mind objects with extra properties, so we'll restrict this
+// list to the object classes we're pretty sure are going to stick around for
+// the forseeable future.
+Pattern({
+          Function:          { count: Pattern.NATURAL },
+          Object:            { count: Pattern.NATURAL },
+          DebuggerPrototype: { count: Pattern.NATURAL },
+          global:            { count: Pattern.NATURAL },
+        })
+  .assert(dbg.memory.takeCensus({ breakdown: { by: 'objectClass' } }));
+
+Pattern({
+          objects:        { count: Pattern.NATURAL },
+          scripts:        { count: Pattern.NATURAL },
+          strings:        { count: Pattern.NATURAL },
+          other:          { count: Pattern.NATURAL }
+        })
+  .assert(dbg.memory.takeCensus({ breakdown: { by: 'coarseType' } }));
+
+// As for { by: 'objectClass' }, restrict our pattern to the types
+// we predict will stick around for a long time.
+Pattern({
+          JSString:             { count: Pattern.NATURAL },
+          'js::Shape':          { count: Pattern.NATURAL },
+          JSObject:             { count: Pattern.NATURAL },
+        })
+  .assert(dbg.memory.takeCensus({ breakdown: { by: 'internalType' } }));
+
+
+// Nested breakdowns.
+
+let coarse_type_pattern = {
+  objects:        { count: Pattern.NATURAL },
+  scripts:        { count: Pattern.NATURAL },
+  strings:        { count: Pattern.NATURAL },
+  other:          { count: Pattern.NATURAL }
+};
+
+Pattern({
+          JSString:    coarse_type_pattern,
+          'js::Shape': coarse_type_pattern,
+          JSObject:    coarse_type_pattern,
+        })
+  .assert(dbg.memory.takeCensus({
+    breakdown: { by: 'internalType',
+                 then: { by: 'coarseType' }
+    }
+  }));
+
+Pattern({
+          Function:          { count: Pattern.NATURAL },
+          Object:            { count: Pattern.NATURAL },
+          DebuggerPrototype: { count: Pattern.NATURAL },
+          global:            { count: Pattern.NATURAL },
+          other:             coarse_type_pattern
+        })
+  .assert(dbg.memory.takeCensus({
+    breakdown: {
+      by: 'objectClass',
+      then:  { by: 'count' },
+      other: { by: 'coarseType' }
+    }
+  }));
+
+Pattern({
+          objects: { count: Pattern.NATURAL, label: "object" },
+          scripts: { count: Pattern.NATURAL, label: "scripts" },
+          strings: { count: Pattern.NATURAL, label: "strings" },
+          other:   { count: Pattern.NATURAL, label: "other" }
+        })
+  .assert(dbg.memory.takeCensus({
+    breakdown: {
+      by: 'coarseType',
+      objects: { by: 'count', label: 'object' },
+      scripts: { by: 'count', label: 'scripts' },
+      strings: { by: 'count', label: 'strings' },
+      other:   { by: 'count', label: 'other' }
+    }
+  }));