dom::Nullable<uint64_t> DominatorTree::GetImmediateDominator(
uint64_t aNodeId) const {
JS::ubi::Node::Id id(aNodeId);
Maybe<JS::ubi::Node> node = mHeapSnapshot->getNodeById(id);
if (node.isNothing()) return dom::Nullable<uint64_t>();
JS::ubi::Node dominator = mDominatorTree.getImmediateDominator(*node);
if (!dominator || dominator == *node) return dom::Nullable<uint64_t>();
return dom::Nullable<uint64_t>(dominator.identifier());
}
const char* className = "MyObjectClassName";
NodeId id = 1L << 33;
uint64_t size = 1L << 60;
MockDeserializedNode mocked(id, typeName, size);
mocked.jsObjectClassName = mozilla::UniquePtr<char[]>(strdup(className));
ASSERT_TRUE(!!mocked.jsObjectClassName);
DeserializedNode& deserialized = mocked;
JS::ubi::Node ubi(&deserialized);
// Test the ubi::Node accessors.
EXPECT_EQ(size, ubi.size(fakeMallocSizeOf));
EXPECT_EQ(typeName, ubi.typeName());
EXPECT_EQ(id, ubi.identifier());
EXPECT_FALSE(ubi.isLive());
EXPECT_EQ(strcmp(ubi.jsObjectClassName(), className), 0);
// Test the ubi::Node's edges.
UniquePtr<DeserializedNode> referent1(new MockDeserializedNode(1,
nullptr,
10));
DeserializedEdge edge1;
edge1.referent = referent1->id;
mocked.addEdge(Move(edge1));
EXPECT_CALL(mocked,
getEdgeReferent(Field(&DeserializedEdge::referent,
referent1->id)))
.Times(1)