v8/test/cctest/test-ordered-hash-table.cc

// Copyright 2014 the V8 project authors. All rights reserved.
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#include <stdlib.h>

#include "v8.h"

#include "cctest.h"
#include "factory.h"

namespace {

using namespace v8::internal;

TEST(Set) {
  LocalContext context;
  Isolate* isolate = CcTest::i_isolate();
  Factory* factory = isolate->factory();
  HandleScope scope(isolate);
  Handle<OrderedHashSet> ordered_set = factory->NewOrderedHashSet();
  CHECK_EQ(2, ordered_set->NumberOfBuckets());
  CHECK_EQ(0, ordered_set->NumberOfElements());
  CHECK_EQ(0, ordered_set->NumberOfDeletedElements());

  Handle<Map> map = factory->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize);
  Handle<JSObject> obj = factory->NewJSObjectFromMap(map);
  CHECK(!ordered_set->Contains(*obj));
  ordered_set = OrderedHashSet::Add(ordered_set, obj);
  CHECK_EQ(1, ordered_set->NumberOfElements());
  CHECK(ordered_set->Contains(*obj));
  ordered_set = OrderedHashSet::Remove(ordered_set, obj);
  CHECK_EQ(0, ordered_set->NumberOfElements());
  CHECK(!ordered_set->Contains(*obj));

  // Test for collisions/chaining
  Handle<JSObject> obj1 = factory->NewJSObjectFromMap(map);
  ordered_set = OrderedHashSet::Add(ordered_set, obj1);
  Handle<JSObject> obj2 = factory->NewJSObjectFromMap(map);
  ordered_set = OrderedHashSet::Add(ordered_set, obj2);
  Handle<JSObject> obj3 = factory->NewJSObjectFromMap(map);
  ordered_set = OrderedHashSet::Add(ordered_set, obj3);
  CHECK_EQ(3, ordered_set->NumberOfElements());
  CHECK(ordered_set->Contains(*obj1));
  CHECK(ordered_set->Contains(*obj2));
  CHECK(ordered_set->Contains(*obj3));

  // Test growth
  ordered_set = OrderedHashSet::Add(ordered_set, obj);
  Handle<JSObject> obj4 = factory->NewJSObjectFromMap(map);
  ordered_set = OrderedHashSet::Add(ordered_set, obj4);
  CHECK(ordered_set->Contains(*obj));
  CHECK(ordered_set->Contains(*obj1));
  CHECK(ordered_set->Contains(*obj2));
  CHECK(ordered_set->Contains(*obj3));
  CHECK(ordered_set->Contains(*obj4));
  CHECK_EQ(5, ordered_set->NumberOfElements());
  CHECK_EQ(0, ordered_set->NumberOfDeletedElements());
  CHECK_EQ(4, ordered_set->NumberOfBuckets());

  // Test shrinking
  ordered_set = OrderedHashSet::Remove(ordered_set, obj);
  ordered_set = OrderedHashSet::Remove(ordered_set, obj1);
  ordered_set = OrderedHashSet::Remove(ordered_set, obj2);
  ordered_set = OrderedHashSet::Remove(ordered_set, obj3);
  CHECK_EQ(1, ordered_set->NumberOfElements());
  CHECK_EQ(2, ordered_set->NumberOfBuckets());
}


TEST(Map) {
  LocalContext context;
  Isolate* isolate = CcTest::i_isolate();
  Factory* factory = isolate->factory();
  HandleScope scope(isolate);
  Handle<OrderedHashMap> ordered_map = factory->NewOrderedHashMap();
  CHECK_EQ(2, ordered_map->NumberOfBuckets());
  CHECK_EQ(0, ordered_map->NumberOfElements());
  CHECK_EQ(0, ordered_map->NumberOfDeletedElements());

  Handle<Map> map = factory->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize);
  Handle<JSObject> obj = factory->NewJSObjectFromMap(map);
  Handle<JSObject> val = factory->NewJSObjectFromMap(map);
  CHECK(ordered_map->Lookup(*obj)->IsTheHole());
  ordered_map = OrderedHashMap::Put(ordered_map, obj, val);
  CHECK_EQ(1, ordered_map->NumberOfElements());
  CHECK(ordered_map->Lookup(*obj)->SameValue(*val));
  ordered_map = OrderedHashMap::Put(
      ordered_map, obj, factory->the_hole_value());
  CHECK_EQ(0, ordered_map->NumberOfElements());
  CHECK(ordered_map->Lookup(*obj)->IsTheHole());

  // Test for collisions/chaining
  Handle<JSObject> obj1 = factory->NewJSObjectFromMap(map);
  Handle<JSObject> obj2 = factory->NewJSObjectFromMap(map);
  Handle<JSObject> obj3 = factory->NewJSObjectFromMap(map);
  Handle<JSObject> val1 = factory->NewJSObjectFromMap(map);
  Handle<JSObject> val2 = factory->NewJSObjectFromMap(map);
  Handle<JSObject> val3 = factory->NewJSObjectFromMap(map);
  ordered_map = OrderedHashMap::Put(ordered_map, obj1, val1);
  ordered_map = OrderedHashMap::Put(ordered_map, obj2, val2);
  ordered_map = OrderedHashMap::Put(ordered_map, obj3, val3);
  CHECK_EQ(3, ordered_map->NumberOfElements());
  CHECK(ordered_map->Lookup(*obj1)->SameValue(*val1));
  CHECK(ordered_map->Lookup(*obj2)->SameValue(*val2));
  CHECK(ordered_map->Lookup(*obj3)->SameValue(*val3));

  // Test growth
  ordered_map = OrderedHashMap::Put(ordered_map, obj, val);
  Handle<JSObject> obj4 = factory->NewJSObjectFromMap(map);
  Handle<JSObject> val4 = factory->NewJSObjectFromMap(map);
  ordered_map = OrderedHashMap::Put(ordered_map, obj4, val4);
  CHECK(ordered_map->Lookup(*obj)->SameValue(*val));
  CHECK(ordered_map->Lookup(*obj1)->SameValue(*val1));
  CHECK(ordered_map->Lookup(*obj2)->SameValue(*val2));
  CHECK(ordered_map->Lookup(*obj3)->SameValue(*val3));
  CHECK(ordered_map->Lookup(*obj4)->SameValue(*val4));
  CHECK_EQ(5, ordered_map->NumberOfElements());
  CHECK_EQ(4, ordered_map->NumberOfBuckets());

  // Test shrinking
  ordered_map = OrderedHashMap::Put(
      ordered_map, obj, factory->the_hole_value());
  ordered_map = OrderedHashMap::Put(
      ordered_map, obj1, factory->the_hole_value());
  ordered_map = OrderedHashMap::Put(
      ordered_map, obj2, factory->the_hole_value());
  ordered_map = OrderedHashMap::Put(
      ordered_map, obj3, factory->the_hole_value());
  CHECK_EQ(1, ordered_map->NumberOfElements());
  CHECK_EQ(2, ordered_map->NumberOfBuckets());
}


}