1 // Copyright 2014 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package ppc64asm 6 7 import ( 8 "testing" 9 ) 10 11 func panicOrNot(f func()) (panicked bool) { 12 defer func() { 13 if err := recover(); err != nil { 14 panicked = true 15 } 16 }() 17 f() 18 return false 19 } 20 21 func TestBitField(t *testing.T) { 22 var tests = []struct { 23 b BitField 24 i uint32 // input 25 u uint32 // unsigned output 26 s int32 // signed output 27 fail bool // if the check should panic 28 }{ 29 {BitField{0, 0}, 0, 0, 0, true}, 30 {BitField{31, 2}, 0, 0, 0, true}, 31 {BitField{31, 1}, 1, 1, -1, false}, 32 {BitField{29, 2}, 0 << 1, 0, 0, false}, 33 {BitField{29, 2}, 1 << 1, 1, 1, false}, 34 {BitField{29, 2}, 2 << 1, 2, -2, false}, 35 {BitField{29, 2}, 3 << 1, 3, -1, false}, 36 {BitField{0, 32}, 1<<32 - 1, 1<<32 - 1, -1, false}, 37 {BitField{16, 3}, 1 << 15, 4, -4, false}, 38 } 39 for i, tst := range tests { 40 var ( 41 ou uint32 42 os int32 43 ) 44 failed := panicOrNot(func() { 45 ou = tst.b.Parse(tst.i) 46 os = tst.b.ParseSigned(tst.i) 47 }) 48 if failed != tst.fail { 49 t.Errorf("case %d: %v: fail test failed, got %v, expected %v", i, tst.b, failed, tst.fail) 50 continue 51 } 52 if ou != tst.u { 53 t.Errorf("case %d: %v.Parse(%d) returned %d, expected %d", i, tst.b, tst.i, ou, tst.u) 54 continue 55 } 56 if os != tst.s { 57 t.Errorf("case %d: %v.ParseSigned(%d) returned %d, expected %d", i, tst.b, tst.i, os, tst.s) 58 } 59 } 60 } 61
