Make 2D tests

tests/io/cfitsio.cpp

+#include <mln/core/image/ndimage.hpp>
 #include <mln/io/imread.hpp>
 
 #include <fixtures/ImageCompare/image_compare.hpp>
@@ -24,36 +25,120 @@ TEST(IO, cfitsio_not_an_image)
 
 TEST(IO, cfitsio_2D_uint8)
 {
+  mln::image2d<std::uint8_t> ref = {
+      {0, 1, 2, 3, 4},      //
+      {5, 6, 7, 8, 9},      //
+      {10, 11, 12, 13, 14}, //
+      {15, 16, 17, 18, 19}, //
+      {20, 21, 22, 23, 24}  //
+  };
+
   auto img = mln::io::fits::imread(filename, 1);
   ASSERT_TRUE(img.sample_type() == mln::sample_type_id::UINT8);
+  ASSERT_TRUE(img.pdim() == 2);
+  ASSERT_TRUE(img.width() == 5);
+  ASSERT_TRUE(img.height() == 5);
+
+  auto* casted = img.cast_to<std::uint8_t, 2>();
+  ASSERT_IMAGES_EQ_EXP(*casted, ref);
 }
 
 TEST(IO, cfitsio_2D_int16)
 {
+  mln::image2d<std::int16_t> ref = {
+      {0, 1, 2, 3, 4},      //
+      {5, 6, 7, 8, 9},      //
+      {10, 11, 12, 13, 14}, //
+      {15, 16, 17, 18, 19}, //
+      {20, 21, 22, 23, 24}  //
+  };
+
   auto img = mln::io::fits::imread(filename, 2);
   ASSERT_TRUE(img.sample_type() == mln::sample_type_id::INT16);
+  ASSERT_TRUE(img.pdim() == 2);
+  ASSERT_TRUE(img.width() == 5);
+  ASSERT_TRUE(img.height() == 5);
+
+  auto* casted = img.cast_to<std::int16_t, 2>();
+  ASSERT_IMAGES_EQ_EXP(*casted, ref);
 }
 
 TEST(IO, cfitsio_2D_int32)
 {
+  mln::image2d<std::int32_t> ref = {
+      {0, 1, 2, 3, 4},      //
+      {5, 6, 7, 8, 9},      //
+      {10, 11, 12, 13, 14}, //
+      {15, 16, 17, 18, 19}, //
+      {20, 21, 22, 23, 24}  //
+  };
+
   auto img = mln::io::fits::imread(filename, 3);
   ASSERT_TRUE(img.sample_type() == mln::sample_type_id::INT32);
+  ASSERT_TRUE(img.pdim() == 2);
+  ASSERT_TRUE(img.width() == 5);
+  ASSERT_TRUE(img.height() == 5);
+
+  auto* casted = img.cast_to<std::int32_t, 2>();
+  ASSERT_IMAGES_EQ_EXP(*casted, ref);
 }
 
 TEST(IO, cfitsio_2D_int64)
 {
+  mln::image2d<std::int64_t> ref = {
+      {0, 1, 2, 3, 4},      //
+      {5, 6, 7, 8, 9},      //
+      {10, 11, 12, 13, 14}, //
+      {15, 16, 17, 18, 19}, //
+      {20, 21, 22, 23, 24}  //
+  };
+
   auto img = mln::io::fits::imread(filename, 4);
   ASSERT_TRUE(img.sample_type() == mln::sample_type_id::INT64);
+  ASSERT_TRUE(img.pdim() == 2);
+  ASSERT_TRUE(img.width() == 5);
+  ASSERT_TRUE(img.height() == 5);
+
+  auto* casted = img.cast_to<std::int64_t, 2>();
+  ASSERT_IMAGES_EQ_EXP(*casted, ref);
 }
 
 TEST(IO, cfitsio_2D_float)
 {
+  mln::image2d<float> ref = {
+      {0.f, 1.f, 2.f, 3.f, 4.f},      //
+      {5.f, 6.f, 7.f, 8.f, 9.f},      //
+      {10.f, 11.f, 12.f, 13.f, 14.f}, //
+      {15.f, 16.f, 17.f, 18.f, 19.f}, //
+      {20.f, 21.f, 22.f, 23.f, 24.f}  //
+  };
+
   auto img = mln::io::fits::imread(filename, 5);
   ASSERT_TRUE(img.sample_type() == mln::sample_type_id::FLOAT);
+  ASSERT_TRUE(img.pdim() == 2);
+  ASSERT_TRUE(img.width() == 5);
+  ASSERT_TRUE(img.height() == 5);
+
+  auto* casted = img.cast_to<float, 2>();
+  ASSERT_IMAGES_EQ_EXP(*casted, ref);
 }
 
 TEST(IO, cfitsio_2D_double)
 {
+  mln::image2d<double> ref = {
+      {0.0, 1.0, 2.0, 3.0, 4.0},      //
+      {5.0, 6.0, 7.0, 8.0, 9.0},      //
+      {10.0, 11.0, 12.0, 13.0, 14.0}, //
+      {15.0, 16.0, 17.0, 18.0, 19.0}, //
+      {20.0, 21.0, 22.0, 23.0, 24.0}  //
+  };
+
   auto img = mln::io::fits::imread(filename, 6);
   ASSERT_TRUE(img.sample_type() == mln::sample_type_id::DOUBLE);
+  ASSERT_TRUE(img.pdim() == 2);
+  ASSERT_TRUE(img.width() == 5);
+  ASSERT_TRUE(img.height() == 5);
+
+  auto* casted = img.cast_to<double, 2>();
+  ASSERT_IMAGES_EQ_EXP(*casted, ref);
 }
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