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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "config.h"
      6 #include "core/css/invalidation/DescendantInvalidationSet.h"
      7 
      8 #include <gtest/gtest.h>
      9 
     10 using namespace blink;
     11 
     12 namespace {
     13 
     14 // Once we setWholeSubtreeInvalid, we should not keep the HashSets.
     15 TEST(DescendantInvalidationSetTest, SubtreeInvalid_AddBefore)
     16 {
     17     RefPtrWillBeRawPtr<DescendantInvalidationSet> set = DescendantInvalidationSet::create();
     18     set->addClass("a");
     19     set->setWholeSubtreeInvalid();
     20 
     21     ASSERT_TRUE(set->isEmpty());
     22 }
     23 
     24 // Don't (re)create HashSets if we've already setWholeSubtreeInvalid.
     25 TEST(DescendantInvalidationSetTest, SubtreeInvalid_AddAfter)
     26 {
     27     RefPtrWillBeRawPtr<DescendantInvalidationSet> set = DescendantInvalidationSet::create();
     28     set->setWholeSubtreeInvalid();
     29     set->addTagName("a");
     30 
     31     ASSERT_TRUE(set->isEmpty());
     32 }
     33 
     34 // No need to keep the HashSets when combining with a wholeSubtreeInvalid set.
     35 TEST(DescendantInvalidationSetTest, SubtreeInvalid_Combine_1)
     36 {
     37     RefPtrWillBeRawPtr<DescendantInvalidationSet> set1 = DescendantInvalidationSet::create();
     38     RefPtrWillBeRawPtr<DescendantInvalidationSet> set2 = DescendantInvalidationSet::create();
     39 
     40     set1->addId("a");
     41     set2->setWholeSubtreeInvalid();
     42 
     43     set1->combine(*set2);
     44 
     45     ASSERT_TRUE(set1->wholeSubtreeInvalid());
     46     ASSERT_TRUE(set1->isEmpty());
     47 }
     48 
     49 // No need to add HashSets from combining set when we already have wholeSubtreeInvalid.
     50 TEST(DescendantInvalidationSetTest, SubtreeInvalid_Combine_2)
     51 {
     52     RefPtrWillBeRawPtr<DescendantInvalidationSet> set1 = DescendantInvalidationSet::create();
     53     RefPtrWillBeRawPtr<DescendantInvalidationSet> set2 = DescendantInvalidationSet::create();
     54 
     55     set1->setWholeSubtreeInvalid();
     56     set2->addAttribute("a");
     57 
     58     set1->combine(*set2);
     59 
     60     ASSERT_TRUE(set1->wholeSubtreeInvalid());
     61     ASSERT_TRUE(set1->isEmpty());
     62 }
     63 
     64 } // namespace
     65