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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 
     18 #include <memory>
     19 
     20 #include "common_runtime_test.h"
     21 #include "dex_file-inl.h"
     22 #include "scoped_thread_state_change-inl.h"
     23 #include "type_lookup_table.h"
     24 #include "utf-inl.h"
     25 
     26 namespace art {
     27 
     28 static const size_t kDexNoIndex = DexFile::kDexNoIndex;  // Make copy to prevent linking errors.
     29 
     30 using DescriptorClassDefIdxPair = std::pair<const char*, uint32_t>;
     31 class TypeLookupTableTest : public CommonRuntimeTestWithParam<DescriptorClassDefIdxPair> {};
     32 
     33 TEST_F(TypeLookupTableTest, CreateLookupTable) {
     34   ScopedObjectAccess soa(Thread::Current());
     35   std::unique_ptr<const DexFile> dex_file(OpenTestDexFile("Lookup"));
     36   std::unique_ptr<TypeLookupTable> table(TypeLookupTable::Create(*dex_file));
     37   ASSERT_NE(nullptr, table.get());
     38   ASSERT_NE(nullptr, table->RawData());
     39   ASSERT_EQ(32U, table->RawDataLength());
     40 }
     41 
     42 TEST_P(TypeLookupTableTest, Find) {
     43   ScopedObjectAccess soa(Thread::Current());
     44   std::unique_ptr<const DexFile> dex_file(OpenTestDexFile("Lookup"));
     45   std::unique_ptr<TypeLookupTable> table(TypeLookupTable::Create(*dex_file));
     46   ASSERT_NE(nullptr, table.get());
     47   auto pair = GetParam();
     48   const char* descriptor = pair.first;
     49   size_t hash = ComputeModifiedUtf8Hash(descriptor);
     50   uint32_t class_def_idx = table->Lookup(descriptor, hash);
     51   ASSERT_EQ(pair.second, class_def_idx);
     52 }
     53 
     54 INSTANTIATE_TEST_CASE_P(FindNonExistingClassWithoutCollisions,
     55                         TypeLookupTableTest,
     56                         testing::Values(DescriptorClassDefIdxPair("LAB;", 1U)));
     57 INSTANTIATE_TEST_CASE_P(FindNonExistingClassWithCollisions,
     58                         TypeLookupTableTest,
     59                         testing::Values(DescriptorClassDefIdxPair("LDA;", kDexNoIndex)));
     60 INSTANTIATE_TEST_CASE_P(FindClassNoCollisions,
     61                         TypeLookupTableTest,
     62                         testing::Values(DescriptorClassDefIdxPair("LC;", 2U)));
     63 INSTANTIATE_TEST_CASE_P(FindClassWithCollisions,
     64                         TypeLookupTableTest,
     65                         testing::Values(DescriptorClassDefIdxPair("LAB;", 1U)));
     66 }  // namespace art
     67