Move the three regression test cases for issue #1370 from _cmptest/ to _demo/: - issue1370_gotypes (go/types.Object test) - issue1370_goast (go/ast.Expr test) - issue1370_geometry (custom interface test) Updated import path in geometry.go to reflect new location. Generated with [codeagent](https://github.com/qbox/codeagent) Co-authored-by: luoliwoshang <51194195+luoliwoshang@users.noreply.github.com>