add tests for delete callback

Author: lonvia

tests/bdd/flex/delete-callbacks.feature

@@ -0,0 +1,112 @@
+Feature: Test for delete callbacks
+
+    Background:
+        Given the input file 'liechtenstein-2013-08-03.osm.pbf'
+        And the lua style
+            """
+            local change = osm2pgsql.define_table{
+                name = 'change',
+                ids = {type = 'any', id_column = 'osm_id', type_column = 'osm_type'},
+                columns = {
+                    { column = 'extra', type = 'int' }
+                }}
+
+            local function process_delete(object)
+                change:insert{extra = object.version}
+            end
+
+            osm2pgsql.delete_node = process_delete
+            osm2pgsql.delete_way = process_delete
+            osm2pgsql.delete_relation = process_delete
+            """
+        When running osm2pgsql flex with parameters
+            | --slim |
+
+        Then table change contains exactly
+            | osm_type | osm_id |
+
+        Given the input file '008-ch.osc.gz'
+
+    Scenario: Delete callbacks are called
+        When running osm2pgsql flex with parameters
+            | --slim | -a |
+
+        Then SELECT osm_type, count(*), sum(extra) FROM change GROUP BY osm_type
+            | osm_type | count | sum |
+            | N        | 16773 | 16779 |
+            | W        | 4     | 9 |
+            | R        | 1     | 3 |
+
+        When running osm2pgsql flex with parameters
+            | --slim | -a |
+
+        Then SELECT osm_type, count(*), sum(osm_id) FROM change GROUP BY osm_type
+            | osm_type | count | sum |
+            | N        | 16773 | 37856781001834 |
+            | W        | 4     | 350933407 |
+            | R        | 1     | 2871571 |
+
+    Scenario: No object payload is available
+        Given the lua style
+            """
+            local change = osm2pgsql.define_table{
+                name = 'change',
+                ids = {type = 'any', id_column = 'osm_id', type_column = 'osm_type'},
+                columns = {
+                    { column = 'extra', type = 'int' }
+                }}
+
+            function osm2pgsql.delete_node(object)
+                change:insert{extra = object.tags == nil and 1 or 0}
+            end
+
+            function osm2pgsql.delete_way(object)
+                change:insert{extra = object.nodes == nil and 1 or 0}
+            end
+
+            function osm2pgsql.delete_relation(object)
+                change:insert{extra = object.members == nil and 1 or 0}
+            end
+
+
+            """
+        When running osm2pgsql flex with parameters
+            | --slim | -a |
+        Then SELECT osm_type, count(*), sum(extra) FROM change GROUP BY osm_type
+            | osm_type | count | sum |
+            | N        | 16773 | 16773 |
+            | W        | 4     | 4 |
+            | R        | 1     | 1 |
+
+
+    Scenario: Geometries are not valid for deleted objects
+        Given the lua style
+            """
+            change = osm2pgsql.define_table{
+                name = 'change',
+                ids = {type = 'any', id_column = 'osm_id', type_column = 'osm_type'},
+                columns = {
+                    { column = 'extra', sql_type = 'int' }
+                }}
+
+            function osm2pgsql.delete_node(object)
+                change:insert{extra = object.as_point == nil and 1 or 0}
+            end
+
+            function osm2pgsql.delete_way(object)
+                change:insert{extra = object.as_linestring == nil and 1 or 0}
+            end
+
+            function osm2pgsql.delete_relation(object)
+                change:insert{extra = object.as_geometrycollection == nil and 1 or 0}
+            end
+
+
+            """
+        When running osm2pgsql flex with parameters
+            | --slim | -a |
+        Then SELECT osm_type, count(*), sum(extra) FROM change GROUP BY osm_type
+            | osm_type | count | sum |
+            | N        | 16773 | 16773|
+            | W        | 4     | 4|
+            | R        | 1     | 1|