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// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include "main.h"
#include <sstream>
#include <string>
#include <Eigen/CXX11/Tensor>
template<int DataLayout>
static void test_output_0d()
{
Tensor<int, 0, DataLayout> tensor;
tensor() = 123;
std::stringstream os;
os << tensor;
std::string expected("123");
VERIFY_IS_EQUAL(std::string(os.str()), expected);
}
template<int DataLayout>
static void test_output_1d()
{
Tensor<int, 1, DataLayout> tensor(5);
for (int i = 0; i < 5; ++i) {
tensor(i) = i;
}
std::stringstream os;
os << tensor;
std::string expected("0\n1\n2\n3\n4");
VERIFY_IS_EQUAL(std::string(os.str()), expected);
Eigen::Tensor<double,1,DataLayout> empty_tensor(0);
std::stringstream empty_os;
empty_os << empty_tensor;
std::string empty_string;
VERIFY_IS_EQUAL(std::string(empty_os.str()), empty_string);
}
template<int DataLayout>
static void test_output_2d()
{
Tensor<int, 2, DataLayout> tensor(5, 3);
for (int i = 0; i < 5; ++i) {
for (int j = 0; j < 3; ++j) {
tensor(i, j) = i*j;
}
}
std::stringstream os;
os << tensor;
std::string expected("0 0 0\n0 1 2\n0 2 4\n0 3 6\n0 4 8");
VERIFY_IS_EQUAL(std::string(os.str()), expected);
}
template<int DataLayout>
static void test_output_expr()
{
Tensor<int, 1, DataLayout> tensor1(5);
Tensor<int, 1, DataLayout> tensor2(5);
for (int i = 0; i < 5; ++i) {
tensor1(i) = i;
tensor2(i) = 7;
}
std::stringstream os;
os << tensor1 + tensor2;
std::string expected(" 7\n 8\n 9\n10\n11");
VERIFY_IS_EQUAL(std::string(os.str()), expected);
}
template<int DataLayout>
static void test_output_string()
{
Tensor<std::string, 2, DataLayout> tensor(5, 3);
tensor.setConstant(std::string("foo"));
std::cout << tensor << std::endl;
std::stringstream os;
os << tensor;
std::string expected("foo foo foo\nfoo foo foo\nfoo foo foo\nfoo foo foo\nfoo foo foo");
VERIFY_IS_EQUAL(std::string(os.str()), expected);
}
template<int DataLayout>
static void test_output_const()
{
Tensor<int, 1, DataLayout> tensor(5);
for (int i = 0; i < 5; ++i) {
tensor(i) = i;
}
TensorMap<Tensor<const int, 1, DataLayout> > tensor_map(tensor.data(), 5);
std::stringstream os;
os << tensor_map;
std::string expected("0\n1\n2\n3\n4");
VERIFY_IS_EQUAL(std::string(os.str()), expected);
}
EIGEN_DECLARE_TEST(cxx11_tensor_io)
{
CALL_SUBTEST(test_output_0d<ColMajor>());
CALL_SUBTEST(test_output_0d<RowMajor>());
CALL_SUBTEST(test_output_1d<ColMajor>());
CALL_SUBTEST(test_output_1d<RowMajor>());
CALL_SUBTEST(test_output_2d<ColMajor>());
CALL_SUBTEST(test_output_2d<RowMajor>());
CALL_SUBTEST(test_output_expr<ColMajor>());
CALL_SUBTEST(test_output_expr<RowMajor>());
CALL_SUBTEST(test_output_string<ColMajor>());
CALL_SUBTEST(test_output_string<RowMajor>());
CALL_SUBTEST(test_output_const<ColMajor>());
CALL_SUBTEST(test_output_const<RowMajor>());
}
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