bug #367: fix double copies in atWithInsertion, and add respective unit-test
diff --git a/test/sparse_vector.cpp b/test/sparse_vector.cpp
index 5eea9ed..5dc4219 100644
--- a/test/sparse_vector.cpp
+++ b/test/sparse_vector.cpp
@@ -23,8 +23,8 @@
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 @@
}
}
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);