Add better schedule test (from Tobias Grosser)

test/test_isl.py

@@ -158,27 +158,27 @@ def test_eval_pw_qpolynomial():
 
 
 def test_schedule():
-    schedule = isl.UnionMap("{A[i,j] -> [i,j]: 0 < i < j < 100}")
+    schedule = isl.Map("{S[t,i,j] -> [t,i,j]: 0 < t < 20 and 0 < i < j < 100}")
+    accesses = isl.Map("{S[t,i,j] -> bar[t%2, i+1, j-1]}")
     context = isl.Set("{:}")
     build = isl.AstBuild.from_context(context)
 
     def callback(node, build):
-        return None
+        schedulemap = build.get_schedule()
+        accessmap = accesses.apply_domain(schedulemap)
+        aff = isl.PwMultiAff.from_map(isl.Map.from_union_map(accessmap))
+        access = build.call_from_pw_multi_aff(aff)
+        return isl.AstNode.alloc_user(access)
 
-    build, callback_handle = build.set_after_each_for(callback)
+    build, callback_handle = build.set_at_each_domain(callback)
 
-    try:
-        ast = build.ast_from_schedule(schedule)
-    except isl.Error:
-        # expected for now -- callback needs to return an AstNode,
-        # but I don't know how to make one.
-        pass
+    ast = build.ast_from_schedule(schedule)
 
-    else:
-        printer = isl.Printer.to_str(isl.DEFAULT_CONTEXT)
-        printer = printer.set_output_format(4)
-        printer = printer.print_ast_node(ast)
-        print(printer.get_str())
+    printer = isl.Printer.to_str(isl.DEFAULT_CONTEXT)
+    printer = printer.set_output_format(isl.format.C)
+    printer = printer.print_ast_node(ast)
+
+    print(printer.get_str())
 
 
 if __name__ == "__main__":