kc3-lang/angle/src/common/FastVector_unittest.cpp

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• Hash : 20c01390
  Author :
  Date : 2018-09-19T15:43:28
  

  Fix FastVector::resize when count < size.
  
  Also update a test to trigger the bug.
  
  Bug: angleproject:2763
  Change-Id: I8e6735320a34dcc4cc8beee1b7a22b768912f24f
  Reviewed-on: https://chromium-review.googlesource.com/1234338
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/common/FastVector_unittest.cpp

• //
  // Copyright 2018 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // FixedVector_unittest:
  //   Tests of the FastVector class
  //
  
  #include <gtest/gtest.h>
  
  #include "common/FastVector.h"
  
  namespace angle
  {
  // Make sure the various constructors compile and do basic checks
  TEST(FastVector, Constructors)
  {
      FastVector<int, 5> defaultContructor;
      EXPECT_EQ(0u, defaultContructor.size());
  
      FastVector<int, 5> count(3);
      EXPECT_EQ(3u, count.size());
  
      FastVector<int, 5> countAndValue(3, 2);
      EXPECT_EQ(3u, countAndValue.size());
      EXPECT_EQ(2, countAndValue[1]);
  
      FastVector<int, 5> copy(countAndValue);
      EXPECT_EQ(copy, countAndValue);
  
      FastVector<int, 5> copyRValue(std::move(count));
      EXPECT_EQ(3u, copyRValue.size());
  
      FastVector<int, 5> initializerList{1, 2, 3, 4, 5};
      EXPECT_EQ(5u, initializerList.size());
      EXPECT_EQ(3, initializerList[2]);
  
      FastVector<int, 5> assignCopy(copyRValue);
      EXPECT_EQ(3u, assignCopy.size());
  
      FastVector<int, 5> assignRValue(std::move(assignCopy));
      EXPECT_EQ(3u, assignRValue.size());
  
      FastVector<int, 5> assignmentInitializerList = {1, 2, 3, 4, 5};
      EXPECT_EQ(5u, assignmentInitializerList.size());
      EXPECT_EQ(3, assignmentInitializerList[2]);
  }
  
  // Test indexing operations (at, operator[])
  TEST(FastVector, Indexing)
  {
      FastVector<int, 5> vec = {0, 1, 2, 3, 4};
      for (int i = 0; i < 5; ++i)
      {
          EXPECT_EQ(i, vec.at(i));
          EXPECT_EQ(vec[i], vec.at(i));
      }
  }
  
  // Test the push_back functions
  TEST(FastVector, PushBack)
  {
      FastVector<int, 5> vec;
      vec.push_back(1);
      EXPECT_EQ(1, vec[0]);
      vec.push_back(1);
      vec.push_back(1);
      vec.push_back(1);
      vec.push_back(1);
      EXPECT_EQ(5u, vec.size());
  }
  
  // Tests growing the fast vector beyond the fixed storage.
  TEST(FastVector, Growth)
  {
      constexpr size_t kSize = 4;
      FastVector<size_t, kSize> vec;
  
      for (size_t i = 0; i < kSize * 2; ++i)
      {
          vec.push_back(i);
      }
  
      EXPECT_EQ(kSize * 2, vec.size());
  
      for (size_t i = kSize * 2; i > 0; --i)
      {
          ASSERT_EQ(vec.back(), i - 1);
          vec.pop_back();
      }
  
      EXPECT_EQ(0u, vec.size());
  }
  
  // Test the pop_back function
  TEST(FastVector, PopBack)
  {
      FastVector<int, 5> vec;
      vec.push_back(1);
      EXPECT_EQ(1, (int)vec.size());
      vec.pop_back();
      EXPECT_EQ(0, (int)vec.size());
  }
  
  // Test the back function
  TEST(FastVector, Back)
  {
      FastVector<int, 5> vec;
      vec.push_back(1);
      vec.push_back(2);
      EXPECT_EQ(2, vec.back());
  }
  
  // Test the back function
  TEST(FastVector, Front)
  {
      FastVector<int, 5> vec;
      vec.push_back(1);
      vec.push_back(2);
      EXPECT_EQ(1, vec.front());
  }
  
  // Test the sizing operations
  TEST(FastVector, Size)
  {
      FastVector<int, 5> vec;
      EXPECT_TRUE(vec.empty());
      EXPECT_EQ(0u, vec.size());
  
      vec.push_back(1);
      EXPECT_FALSE(vec.empty());
      EXPECT_EQ(1u, vec.size());
  }
  
  // Test clearing the vector
  TEST(FastVector, Clear)
  {
      FastVector<int, 5> vec = {0, 1, 2, 3, 4};
      vec.clear();
      EXPECT_TRUE(vec.empty());
  }
  
  // Test clearing the vector larger than the fixed size.
  TEST(FastVector, ClearWithLargerThanFixedSize)
  {
      FastVector<int, 3> vec = {0, 1, 2, 3, 4};
      vec.clear();
      EXPECT_TRUE(vec.empty());
  }
  
  // Test resizing the vector
  TEST(FastVector, Resize)
  {
      FastVector<int, 5> vec;
      vec.resize(5u, 1);
      EXPECT_EQ(5u, vec.size());
      for (int i : vec)
      {
          EXPECT_EQ(1, i);
      }
  
      vec.resize(2u);
      EXPECT_EQ(2u, vec.size());
      for (int i : vec)
      {
          EXPECT_EQ(1, i);
      }
  
      // Resize to larger than minimum
      vec.resize(10u, 2);
      EXPECT_EQ(10u, vec.size());
  
      for (size_t index = 0; index < 2u; ++index)
      {
          EXPECT_EQ(1, vec[index]);
      }
      for (size_t index = 2u; index < 10u; ++index)
      {
          EXPECT_EQ(2, vec[index]);
      }
  
      // Resize back to smaller
      vec.resize(2u, 2);
      EXPECT_EQ(2u, vec.size());
  }
  
  // Test iterating over the vector
  TEST(FastVector, Iteration)
  {
      FastVector<int, 5> vec = {0, 1, 2, 3};
  
      int vistedCount = 0;
      for (int value : vec)
      {
          EXPECT_EQ(vistedCount, value);
          vistedCount++;
      }
      EXPECT_EQ(4, vistedCount);
  }
  
  // Tests that equality comparisons work even if reserved size differs.
  TEST(FastVector, EqualityWithDifferentReservedSizes)
  {
      FastVector<int, 3> vec1 = {1, 2, 3, 4, 5};
      FastVector<int, 5> vec2 = {1, 2, 3, 4, 5};
      EXPECT_EQ(vec1, vec2);
      vec2.push_back(6);
      EXPECT_NE(vec1, vec2);
  }
  
  // Tests vector operations with a non copyable type.
  TEST(FastVector, NonCopyable)
  {
      struct s : angle::NonCopyable
      {
          s() : x(0) {}
          s(int xin) : x(xin) {}
          s(s &&other) : x(other.x) {}
          s &operator=(s &&other)
          {
              x = other.x;
              return *this;
          }
          int x;
      };
  
      FastVector<s, 3> vec;
      vec.push_back(3);
      EXPECT_EQ(3, vec[0].x);
  
      FastVector<s, 3> copy = std::move(vec);
      EXPECT_EQ(1u, copy.size());
      EXPECT_EQ(3, copy[0].x);
  }
  }  // namespace angle
  

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