Update xtensor and fix travisci build

.travis.yml

@@ -9,16 +9,14 @@ matrix:
         apt:
           sources:
             - ubuntu-toolchain-r-test
-          packages:
-            - g++-6
-      env: COMPILER=gcc GCC=6
+    - os: osx
+      osx_image: xcode8
+      compiler: clang
 env:
   global:
     - MINCONDA_VERSION="latest"
     - MINCONDA_LINUX="Linux-x86_64"
     - MINCONDA_OSX="MacOSX-x86_64"
-# before_install:
-
 install:
     # Define the version of miniconda to download
     - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then
@@ -28,20 +26,24 @@ install:
       fi
     - wget "http://repo.continuum.io/miniconda/Miniconda3-$MINCONDA_VERSION-$MINCONDA_OS.sh" -O miniconda.sh;
     - bash miniconda.sh -b -p $HOME/miniconda
+    - export CONDA_PREFIX=$HOME/miniconda
     - export PATH="$HOME/miniconda/bin:$PATH"
     - hash -r
     - conda config --set always_yes yes --set changeps1 no
     - conda update -q conda
     - conda info -a
-    # Start test environement
-    - conda env create -f ./test/test-environment.yml
-    - source activate test-xtensorio
-    - export CC=$CONDA_PREFIX/bin/gcc
-    - export CXX=$CONDA_PREFIX/bin/g++
-    # from conda toolchain package
+    - |
+      if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then
+        export CC=$CONDA_PREFIX/bin/gcc
+        export CXX=$CONDA_PREFIX/bin/g++
+        conda install gcc-7 -c QuantStack -c conda-forge
+      elif [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
+        export CXX=clang++ CC=clang;
+        conda install libcxx clangdev -c QuantStack -c conda-forge
+      fi
+    - conda install cmake openimageio libsndfile boost zlib xtensor=0.15.5 -c QuantStack -c conda-forge
     - export LDFLAGS="${LDFLAGS} -Wl,-rpath,$CONDA_PREFIX/lib"
     - export LINKFLAGS="${LDFLAGS}"
-    # Testing
     - mkdir build
     - cd build
     - cmake -DBUILD_TESTS=ON -DDOWNLOAD_GTEST=ON -DCMAKE_PREFIX_PATH=$CONDA_PREFIX ..;

README.md

@@ -29,7 +29,7 @@ Reading and writing image, sound and npz file formats to and from xtensor data s
 conda install xtensor-io -c QuantStack -c conda-forge
 ```
 
-- `xtensor-io` depends on `xtensor` `^0.13.2`.
+- `xtensor-io` depends on `xtensor` `^0.15.5`.
 
 - `OpenImageIO`, `libsndfile` and `zlib` are optional dependencies to `xtensor-io`
 

test/test_xnpz.cpp

@@ -33,52 +33,31 @@ namespace xt
         EXPECT_TRUE(xt::all(xt::equal(arr_0, xarr_0)));
     }
 
-    bool compare_binary_files(std::string fn1, std::string fn2, std::size_t n_zipped_files)
-    {
-        std::ifstream stream1(fn1, std::ios::in | std::ios::binary);
-        std::vector<uint8_t> fn1_contents((std::istreambuf_iterator<char>(stream1)),
-                                           std::istreambuf_iterator<char>());
-
-        std::ifstream stream2(fn2, std::ios::in | std::ios::binary);
-        std::vector<uint8_t> fn2_contents((std::istreambuf_iterator<char>(stream2)),
-                                           std::istreambuf_iterator<char>());
-        std::size_t unequal = 0;
-
-        if (fn1_contents.size() != fn2_contents.size())
-        {
-            return false;
-        }
-
-        for (auto iter_fn1 = fn1_contents.begin(), iter_fn2 = fn2_contents.begin();
-             iter_fn1 != fn1_contents.end();
-             iter_fn1++, iter_fn2++)
-        {
-            if (*iter_fn1 != *iter_fn2)
-            {
-                unequal += 1;
-            }
-        }
-        // this is date + time == 4 bytes per file + once in global header
-        std::size_t unequal_allowed = (n_zipped_files + 2) * 3;
-        if (unequal > unequal_allowed)
-        {
-            return false;
-        }
-    }
-
     TEST(xnpz, save_uncompressed)
     {
         dump_npz("files/dump_uncompressed.npz", "arr_0", linspace<double>(0, 100), false, false);
         xt::xarray<int64_t> arr = {{0, 1, 2}, {3, 4, 5}, {6, 7, 8}};
         dump_npz("files/dump_uncompressed.npz", "arr_1", arr);
-        EXPECT_TRUE(compare_binary_files("files/dump_uncompressed.npz", "files/uncompressed.npz", 2));
+        // Re-read
+        auto npz_map = xt::load_npz("files/dump_uncompressed.npz");
+        auto arr_0 = npz_map["arr_0"].cast<double>();
+        auto arr_1 = npz_map["arr_1"].cast<uint64_t>(false);
+        xt::xarray<uint64_t> xarr_1 = {{0, 1, 2}, {3, 4, 5}, {6, 7, 8}};
+        EXPECT_TRUE(xt::all(xt::isclose(arr_0, linspace<double>(0, 100))));
+        EXPECT_TRUE(xt::all(xt::equal(arr_1, xarr_1)));
     }
 
     TEST(xnpz, save_compressed)
     {
         xt::xarray<int64_t> arr = {{0, 1, 2}, {3, 4, 5}, {6, 7, 8}};
         dump_npz("files/dump_compressed.npz", "arr_1", linspace<double>(0, 100), true, false );
         dump_npz("files/dump_compressed.npz", "arr_0", arr, true);
-        EXPECT_TRUE(compare_binary_files("files/dump_compressed.npz", "files/compressed.npz", 2));
+        // Re-read
+        auto npz_map = xt::load_npz("files/dump_compressed.npz");
+        auto arr_0 = npz_map["arr_0"].cast<uint64_t>(false);
+        auto arr_1 = npz_map["arr_1"].cast<double>();
+        xt::xarray<uint64_t> xarr_0 = {{0, 1, 2}, {3, 4, 5}, {6, 7, 8}};
+        EXPECT_TRUE(xt::all(xt::isclose(arr_1, linspace<double>(0, 100))));
+        EXPECT_TRUE(xt::all(xt::equal(arr_0, xarr_0)));
     }
-}
+}