Serge Bazanski | 3638a3d | 2021-05-23 18:25:46 +0200 | [diff] [blame] | 1 | package ident |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "net" |
| 7 | "testing" |
| 8 | ) |
| 9 | |
| 10 | // TestE2E performs an end-to-end test of the ident client and server, |
| 11 | // exercising as much functionality as possible. |
| 12 | func TestE2E(t *testing.T) { |
| 13 | lis, err := net.Listen("tcp", "127.0.0.1:0") |
| 14 | if err != nil { |
| 15 | t.Fatalf("Listen: %v", err) |
| 16 | } |
| 17 | defer lis.Close() |
| 18 | |
| 19 | isrv := NewServer() |
| 20 | isrv.HandleFunc(func(ctx context.Context, w ResponseWriter, r *Request) { |
| 21 | switch r.ServerPort { |
| 22 | case 1: |
| 23 | w.SendError(NoUser) |
| 24 | default: |
| 25 | w.SendIdent(&IdentResponse{ |
| 26 | UserID: "q3k", |
| 27 | }) |
| 28 | } |
| 29 | }) |
| 30 | go isrv.Serve(lis) |
| 31 | target := lis.Addr().String() |
| 32 | |
| 33 | ctx := context.Background() |
| 34 | |
| 35 | // Full end-to-end test, from high-level client Query call, to server |
| 36 | // handler. |
| 37 | |
| 38 | // This call should succeed. |
| 39 | resp, err := Query(ctx, target, 123, 234) |
| 40 | if err != nil { |
| 41 | t.Fatalf("Query: %v", err) |
| 42 | } |
| 43 | if want, got := "q3k", resp.UserID; want != got { |
| 44 | t.Errorf("Resp.UserID: wanted %q, got %q", want, got) |
| 45 | } |
| 46 | |
| 47 | // This call should error out and return an error that can be converted |
| 48 | // back into ErrorResponse. |
| 49 | resp, err = Query(ctx, target, 123, 1) |
| 50 | if err == nil { |
| 51 | t.Fatalf("Query returned nil error") |
| 52 | } |
| 53 | identErr := &IdentError{} |
| 54 | if errors.As(err, &identErr) { |
| 55 | if want, got := NoUser, identErr.Inner; want != got { |
| 56 | t.Errorf("Query error is %q, wanted %q", want, got) |
| 57 | } |
| 58 | } else { |
| 59 | t.Errorf("Query error did not match AnyError") |
| 60 | } |
| 61 | // Test matches against specific errors. |
| 62 | if errors.Is(err, &IdentError{UnknownError}) { |
| 63 | t.Errorf("Query error should not have matched UnknownError") |
| 64 | } |
| 65 | if !errors.Is(err, &IdentError{NoUser}) { |
| 66 | t.Errorf("Query error should have matcher NoUser") |
| 67 | } |
| 68 | } |