1 // Copyright 2015 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 <string> 6 7 #include "base/json/json_reader.h" 8 #include "base/memory/ref_counted.h" 9 #include "base/memory/scoped_ptr.h" 10 #include "base/trace_event/heap_profiler_type_name_deduplicator.h" 11 #include "base/values.h" 12 #include "testing/gtest/include/gtest/gtest.h" 13 14 namespace base { 15 namespace trace_event { 16 17 // Define all strings once, because the deduplicator requires pointer equality, 18 // and string interning is unreliable. 19 const char kInt[] = "int"; 20 const char kBool[] = "bool"; 21 const char kString[] = "string"; 22 const char kNeedsEscape[] = "\"quotes\""; 23 24 scoped_ptr<Value> DumpAndReadBack(const ConvertableToTraceFormat& convertable) { 25 std::string json; 26 convertable.AppendAsTraceFormat(&json); 27 return JSONReader::Read(json); 28 } 29 30 TEST(TypeNameDeduplicatorTest, Deduplication) { 31 // The type IDs should be like this: 32 // 0: [unknown] 33 // 1: int 34 // 2: bool 35 // 3: string 36 37 scoped_refptr<TypeNameDeduplicator> dedup = new TypeNameDeduplicator; 38 ASSERT_EQ(1, dedup->Insert(kInt)); 39 ASSERT_EQ(2, dedup->Insert(kBool)); 40 ASSERT_EQ(3, dedup->Insert(kString)); 41 42 // Inserting again should return the same IDs. 43 ASSERT_EQ(2, dedup->Insert(kBool)); 44 ASSERT_EQ(1, dedup->Insert(kInt)); 45 ASSERT_EQ(3, dedup->Insert(kString)); 46 47 // A null pointer should yield type ID 0. 48 ASSERT_EQ(0, dedup->Insert(nullptr)); 49 } 50 51 TEST(TypeNameDeduplicatorTest, EscapeTypeName) { 52 scoped_refptr<TypeNameDeduplicator> dedup = new TypeNameDeduplicator; 53 ASSERT_EQ(1, dedup->Insert(kNeedsEscape)); 54 55 // Reading json should not fail, because the type name should have been 56 // escaped properly. 57 scoped_ptr<Value> type_names = DumpAndReadBack(*dedup); 58 ASSERT_NE(nullptr, type_names); 59 60 const DictionaryValue* dictionary; 61 ASSERT_TRUE(type_names->GetAsDictionary(&dictionary)); 62 63 // When the type name was inserted, it got ID 1. The exported key "1" 64 // should contain the name, with quotes. 65 std::string type_name; 66 ASSERT_TRUE(dictionary->GetString("1", &type_name)); 67 ASSERT_EQ("\"quotes\"", type_name); 68 } 69 70 } // namespace trace_event 71 } // namespace base 72
