test: add a few more area-related assertions

common/bspfile_generic.cc

@@ -261,6 +261,29 @@ void bsp2_dclipnode_t::stream_read(std::istream &s)
     s >= std::tie(planenum, children);
 }
 
+// mleaf_t
+
+static auto tuple(const mleaf_t &l)
+{
+    return std::tie(
+        l.contents,
+        l.visofs,
+        l.mins,
+        l.maxs,
+        l.firstmarksurface,
+        l.nummarksurfaces,
+        l.ambient_level,
+        l.cluster,
+        l.area,
+        l.firstleafbrush,
+        l.numleafbrushes);
+}
+
+bool mleaf_t::operator==(const mleaf_t &other) const
+{
+    return tuple(*this) == tuple(other);
+}
+
 // darea_t
 
 void darea_t::stream_write(std::ostream &s) const

include/common/bspfile_generic.hh

@@ -275,6 +275,9 @@ struct mleaf_t
     int32_t area;
     uint32_t firstleafbrush;
     uint32_t numleafbrushes;
+
+    // comparison operator for tests
+    bool operator==(const mleaf_t &other) const;
 };
 
 struct darea_t

tests/test_qbsp_q2.cc

@@ -21,6 +21,10 @@ TEST_CASE("detail" * doctest::test_suite("testmaps_q2")) {
     // stats
     CHECK(1 == bsp.dmodels.size());
     // Q2 reserves leaf 0 as an invalid leaf
+    CHECK(mleaf_t{.contents = Q2_CONTENTS_SOLID, .visofs = -1} == bsp.dleafs[0]);
+    // no areaportals except the placeholder
+    CHECK(1 == bsp.dareaportals.size());
+    CHECK(2 == bsp.dareas.size());
 
     // leafs:
     //  6 solid leafs outside the room (* can be more depending on when the "divider" is cut)
@@ -81,17 +85,20 @@ TEST_CASE("detail" * doctest::test_suite("testmaps_q2")) {
     auto *empty_leaf_above_button = BSP_FindLeafAtPoint(&bsp, &bsp.dmodels[0], above_button);
     CHECK(0 == empty_leaf_above_button->contents);
     CHECK(0 == Leaf_Brushes(&bsp, empty_leaf_above_button).size());
+    CHECK(1 == empty_leaf_above_button->area);
 
     auto *empty_leaf_side_room = BSP_FindLeafAtPoint(&bsp, &bsp.dmodels[0], side_room);
     CHECK(0 == empty_leaf_side_room->contents);
     CHECK(0 == Leaf_Brushes(&bsp, empty_leaf_side_room).size());
     CHECK(empty_leaf_side_room->cluster != empty_leaf_above_button->cluster);
+    CHECK(1 == empty_leaf_side_room->area);
 
     auto *empty_leaf_beside_button = BSP_FindLeafAtPoint(&bsp, &bsp.dmodels[0], beside_button);
     CHECK(0 == empty_leaf_beside_button->contents);
     CHECK(-1 != empty_leaf_beside_button->cluster);
     CHECK(empty_leaf_above_button->cluster == empty_leaf_beside_button->cluster);
     CHECK(empty_leaf_above_button != empty_leaf_beside_button);
+    CHECK(1 == empty_leaf_beside_button->area);
 
     CHECK(prt->portals.size() == 5);
     CHECK(prt->portalleafs_real == 0); // not used by Q2