+@DB
+Feature: Update of interpolations
+
+ @wip
+ # Test case for #598
+ Scenario: add an interpolation way
+ Given the grid
+ | 4 | 7 | 5 |
+ | 10| | 12|
+ When loading osm data
+ """
+ n3
+ n4 Taddr:housenumber=1
+ n5 Taddr:housenumber=5
+ n10
+ n12
+ w11 Thighway=residential,name=X Nn4,n5
+ w12 Thighway=residential,name=Highway Nn10,n12
+ """
+ And updating osm data
+ """
+ n4 Taddr:housenumber=1
+ n5 Taddr:housenumber=5
+ w1 Taddr:interpolation=odd Nn4,n5
+ w2 Tbuilding=yes,name=ggg Nn4,n10,n7,n4
+ w3 Tbuilding=yes,name=ggg Nn4,n10,n7,n4
+ w4 Tbuilding=yes,name=ggg Nn4,n10,n7,n4
+ w5 Tbuilding=yes,name=ggg Nn4,n10,n7,n4
+ w6 Tbuilding=yes,name=ggg Nn4,n10,n7,n4
+ w7 Tbuilding=yes,name=ggg Nn4,n10,n7,n4
+ w11 dD
+ """
+ Then place contains
+ | object | housenumber |
+ | N4:place | 1 |
+ | N5:place | 5 |
+ | W1:place | odd |
+ And W1 expands to interpolation
+ | start | end |
+ | 1 | 5 |