| // Copyright 2015 The Vanadium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package transcoder |
| |
| import ( |
| "testing" |
| |
| "reflect" |
| |
| "v.io/v23/vdl" |
| ) |
| |
| func TestComputeStructLayout(t *testing.T) { |
| testCases := []struct { |
| t *vdl.Type |
| layout structLayout |
| }{ |
| { |
| vdl.TypeOf(struct { |
| A uint32 |
| }{}), |
| structLayout{ |
| structLayoutField{0, 0, 0}, |
| }, |
| }, |
| { |
| vdl.TypeOf(struct { |
| A uint32 |
| B string |
| }{}), |
| structLayout{ |
| structLayoutField{0, 0, 0}, |
| structLayoutField{1, 8, 0}, |
| }, |
| }, |
| { |
| vdl.TypeOf(struct { |
| A uint32 |
| B string |
| C uint32 |
| }{}), |
| structLayout{ |
| structLayoutField{0, 0, 0}, |
| structLayoutField{2, 4, 0}, |
| structLayoutField{1, 8, 0}, |
| }, |
| }, |
| { |
| vdl.TypeOf(struct { |
| A uint32 |
| B string |
| C bool |
| D float32 |
| }{}), |
| structLayout{ |
| structLayoutField{0, 0, 0}, |
| structLayoutField{2, 4, 0}, |
| structLayoutField{1, 8, 0}, |
| structLayoutField{3, 16, 0}, |
| }, |
| }, |
| { |
| vdl.TypeOf(struct { |
| A uint32 |
| C string |
| B float32 |
| D bool |
| }{}), |
| structLayout{ |
| structLayoutField{0, 0, 0}, |
| structLayoutField{2, 4, 0}, |
| structLayoutField{1, 8, 0}, |
| structLayoutField{3, 16, 0}, |
| }, |
| }, |
| { |
| vdl.TypeOf(struct { |
| A uint16 |
| B bool |
| C string |
| D float32 |
| E bool |
| }{}), |
| structLayout{ |
| structLayoutField{0, 0, 0}, |
| structLayoutField{1, 2, 0}, |
| structLayoutField{4, 2, 1}, |
| structLayoutField{3, 4, 0}, |
| structLayoutField{2, 8, 0}, |
| }, |
| }, |
| } |
| |
| for _, test := range testCases { |
| layout := computeStructLayout(test.t) |
| if got, want := layout, test.layout; !reflect.DeepEqual(got, want) { |
| t.Errorf("struct layout for type %v was %v but %v was expected", test.t, got, want) |
| } |
| for _, o := range test.layout { |
| byteOffset, bitOffset := layout.MojoOffsetsFromVdlIndex(o.vdlStructIndex) |
| if got, want := byteOffset, o.byteOffset; got != want { |
| t.Errorf("byte offset doesn't match. got %v, want %v", got, want) |
| } |
| if got, want := bitOffset, o.bitOffset; got != want { |
| t.Errorf("bit offset doesn't match. got %v, want %v", got, want) |
| } |
| } |
| } |
| } |