// Copyright 2020 CUE Authors
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//     http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

-- in.cue --
import "path"

joinOK: path.Join(["a", "b"], "aix")
joinErr: path.Join(["a", "b"], "foo")
-- out/path --
Errors:
cannot use _|_(2 errors in empty disjunction: (and 2 more errors)) (type _|_) as string in argument 1 to path.Join: 2 errors in empty disjunction: (and 2 more errors):
    ./in.cue:4:10
joinErr: cannot use "foo" as *"unix" | "windows" | "plan9" | "aix" | "android" | "darwin" | "dragonfly" | "freebsd" | "hurd" | "illumos" | "ios" | "js" | "linux" | "nacl" | "netbsd" | "openbsd" | "solaris" | "zos" in argument 2 to path.Join:
    ./in.cue:4:32

Result:
joinOK:  "a/b"
joinErr: _|_ // joinErr: cannot use "foo" as *"unix" | "windows" | "plan9" | "aix" | "android" | "darwin" | "dragonfly" | "freebsd" | "hurd" | "illumos" | "ios" | "js" | "linux" | "nacl" | "netbsd" | "openbsd" | "solaris" | "zos" in argument 2 to path.Join (and 3 more errors)