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bug #367: fix double copies in atWithInsertion, and add respective unit-test

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This commit is contained in:
Gael Guennebaud
2014-10-09 23:35:49 +02:00
parent 48d537f59f
commit 349c2c9235
2 changed files with 39 additions and 6 deletions
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18
test/sparse_vector.cpp
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@@ -23,8 +23,8 @@ template<typename Scalar,typename Index> void sparse_vector(int rows, int cols)
SparseVectorType v1(rows), v2(rows), v3(rows);
DenseMatrix refM1 = DenseMatrix::Zero(rows, rows);
DenseVector refV1 = DenseVector::Random(rows),
refV2 = DenseVector::Random(rows),
refV3 = DenseVector::Random(rows);
refV2 = DenseVector::Random(rows),
refV3 = DenseVector::Random(rows);
std::vector<int> zerocoords, nonzerocoords;
initSparse<Scalar>(densityVec, refV1, v1, &zerocoords, &nonzerocoords);
@@ -52,6 +52,20 @@ template<typename Scalar,typename Index> void sparse_vector(int rows, int cols)
}
}
VERIFY_IS_APPROX(v1, refV1);
// test coeffRef with reallocation
{
SparseVectorType v1(rows);
DenseVector v2 = DenseVector::Zero(rows);
for(int k=0; k<rows; ++k)
{
int i = internal::random<int>(0,rows-1);
Scalar v = internal::random<Scalar>();
v1.coeffRef(i) += v;
v2.coeffRef(i) += v;
}
VERIFY_IS_APPROX(v1,v2);
}
v1.coeffRef(nonzerocoords[0]) = Scalar(5);
refV1.coeffRef(nonzerocoords[0]) = Scalar(5);