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Add test for const TensorMap underlying data mutation

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This commit is contained in:
Eugene Zhulenev 2019-09-03 11:38:39 -07:00
parent f68f2bba09
commit a8d264fa9c
1 changed files with 25 additions and 0 deletions
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25
unsupported/test/cxx11_tensor_map.cpp
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@ -288,6 +288,30 @@ static void test_0d_const_tensor()
VERIFY_IS_EQUAL(scalar4(), 13); VERIFY_IS_EQUAL(scalar4(), 13);
} }
static void test_0d_const_tensor_map()
{
Tensor<int, 0> scalar1;
Tensor<int, 0, RowMajor> scalar2;
const TensorMap<Tensor<int, 0> > scalar3(scalar1.data());
const TensorMap<Tensor<int, 0, RowMajor> > scalar4(scalar2.data());
// Although TensorMap is constant, we still can write to the underlying
// storage, because we map over non-constant Tensor.
scalar3() = 7;
scalar4() = 13;
VERIFY_IS_EQUAL(scalar1(), 7);
VERIFY_IS_EQUAL(scalar2(), 13);
// Pointer to the underlying storage is also non-const.
scalar3.data()[0] = 8;
scalar4.data()[0] = 14;
VERIFY_IS_EQUAL(scalar1(), 8);
VERIFY_IS_EQUAL(scalar2(), 14);
}
EIGEN_DECLARE_TEST(cxx11_tensor_map) EIGEN_DECLARE_TEST(cxx11_tensor_map)
{ {
CALL_SUBTEST(test_0d()); CALL_SUBTEST(test_0d());
@ -299,4 +323,5 @@ EIGEN_DECLARE_TEST(cxx11_tensor_map)
CALL_SUBTEST(test_casting()); CALL_SUBTEST(test_casting());
CALL_SUBTEST(test_0d_const_tensor()); CALL_SUBTEST(test_0d_const_tensor());
CALL_SUBTEST(test_0d_const_tensor_map());
} }