Re-enable part of filter unit test

tests/core/image/view/filter.cpp

@@ -28,12 +28,10 @@ TEST(View, filter_readonly)
 
   mln_foreach_new (auto&& pix, ima.new_pixels())
   {
-    (void)pix;
-    // FIXME:
-    // if (pix.val() > 10)
-    //  ASSERT_EQ(pix.val(), x(pix.point()));
-    // else
-    //  ASSERT_EQ(pix.val(), x.at(pix.point()));
+    if (pix.val() > 10)
+      ASSERT_EQ(pix.val(), x(pix.point()));
+    else
+      ASSERT_EQ(pix.val(), x.at(pix.point()));
   }
 
   mln_foreach_new (auto&& pix, x.new_pixels())
@@ -57,7 +55,7 @@ TEST(View, filter_writable)
   ASSERT_TRUE(mln::experimental::all(ima <= 10));
 }
 
-/*
+
 TEST(View, filter_twice)
 {
   using namespace mln;
@@ -67,19 +65,23 @@ TEST(View, filter_twice)
   image2d<int> ima(dom);
 
   iota(ima, 0);
-  auto x = view::filter(ima, [](int v) { return v > 10; });
-  auto u = view::filter(x, [](int v) { return v < 15; });
+  auto u = view::filter(ima, [](int v) { return v > 10 && v < 15; });
 
-  ASSERT_TRUE(mln::experimental::all(land(u > 10, u < 15)));
+  // FIXME:
+  // auto x = view::filter(ima, [](int v) { return v > 10; });
+  // auto u = view::filter(x, [](int v) { return v < 15; });
+
+  // FIXME:
+  // ASSERT_TRUE(mln::experimental::all(land(u > 10, u < 15)));
 
   mln_foreach_new (auto&& pix, ima.new_pixels())
   {
-    (void)pix;
+    if (pix.val() > 10 and pix.val() < 15)
+      ASSERT_EQ(pix.val(), u(pix.point()));
+    else
+      ASSERT_EQ(pix.val(), u.at(pix.point()));
+
     // FIXME:
-    // if (pix.val() > 10 and pix.val() < 15)
-    //   ASSERT_EQ(pix.val(), u(pix.point()));
-    // else
-    //   ASSERT_EQ(pix.val(), u.at(pix.point()));
     // ASSERT_TRUE(!u.domain().has(pix.point()));
   }
 
@@ -94,17 +96,13 @@ TEST(View, filter_twice)
   {
     mln_foreach_new ((auto [old_v, new_v]), mln::ranges::view::zip(before.new_values(), u.new_values()))
     {
-      (void)old_v;
-      (void)new_v;
-      // FIXME:
-      // if (old_v > 10 && old_v < 15)
-      //   ASSERT_EQ(1, new_v);
-      // else
-      //   ASSERT_EQ(old_v, new_v);
+      if (old_v > 10 && old_v < 15)
+        ASSERT_EQ(1, new_v);
+      else
+        ASSERT_EQ(old_v, new_v);
     }
   }
 
   mln_foreach_new (auto&& px, u.new_pixels())
     ASSERT_EQ(px.val(), ima(px.point()));
 }
-*/
\ No newline at end of file