Nesting routes work strange when handling errors

[jiramares]

When I am nesting routes as described at https://zio.dev/zio-http/dsl/routes it works until I need call handleError.

This server:

val routes = literal("to") / Routes(
    Method.GET / "other" ->  handler(ZIO.fail(MyErrors.IdFormatError)),
    Method.GET / "do" / string("id") -> handler { (id:String, _: Request) => Response.text(s"GET /to/do/${id}") }
).handleError(_ match
    case MyErrors.IdFormatError => Response.badRequest
)

def run = Server.serve(routes.toHttpApp).provide(Server.defaultWithPort(8090))

enum MyErrors:
    case IdFormatError

When started and invoked curl -i http://localhost:8090/to/do/45 outputs:

HTTP/1.1 500 Internal Server Error
warning: 199 ZIO HTTP "Exception in thread "zio-fiber-37" java.lang.RuntimeException: Expected path segment "do" but found "
content-length: 0

But when the route leading to error (that I have to deal with) is removed:

val routes = literal("to") / Routes(
    Method.GET / "do" / string("id") -> handler { (id:String, _: Request) => Response.text(s"GET /to/do/${id}") }
)

def run = Server.serve(routes.toHttpApp).provide(Server.defaultWithPort(8090))

Everything works fine and the result of curl -i http://localhost:8090/to/do/45 is:

HTTP/1.1 200 OK
content-type: text/plain
content-length: 18

GET /to/do/45

[jdegoes]

/bounty $75 for fix and reproducer test case.

[algora-pbc]

💎 $75 bounty • ZIO

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