1// Copyright 2010 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 5package fmt_test 6 7import ( 8 . "fmt" 9 "testing" 10) 11 12type TI int 13type TI8 int8 14type TI16 int16 15type TI32 int32 16type TI64 int64 17type TU uint 18type TU8 uint8 19type TU16 uint16 20type TU32 uint32 21type TU64 uint64 22type TUI uintptr 23type TF float64 24type TF32 float32 25type TF64 float64 26type TB bool 27type TS string 28 29func (v TI) String() string { return Sprintf("I: %d", int(v)) } 30func (v TI8) String() string { return Sprintf("I8: %d", int8(v)) } 31func (v TI16) String() string { return Sprintf("I16: %d", int16(v)) } 32func (v TI32) String() string { return Sprintf("I32: %d", int32(v)) } 33func (v TI64) String() string { return Sprintf("I64: %d", int64(v)) } 34func (v TU) String() string { return Sprintf("U: %d", uint(v)) } 35func (v TU8) String() string { return Sprintf("U8: %d", uint8(v)) } 36func (v TU16) String() string { return Sprintf("U16: %d", uint16(v)) } 37func (v TU32) String() string { return Sprintf("U32: %d", uint32(v)) } 38func (v TU64) String() string { return Sprintf("U64: %d", uint64(v)) } 39func (v TUI) String() string { return Sprintf("UI: %d", uintptr(v)) } 40func (v TF) String() string { return Sprintf("F: %f", float64(v)) } 41func (v TF32) String() string { return Sprintf("F32: %f", float32(v)) } 42func (v TF64) String() string { return Sprintf("F64: %f", float64(v)) } 43func (v TB) String() string { return Sprintf("B: %t", bool(v)) } 44func (v TS) String() string { return Sprintf("S: %q", string(v)) } 45 46func check(t *testing.T, got, want string) { 47 if got != want { 48 t.Error(got, "!=", want) 49 } 50} 51 52func TestStringer(t *testing.T) { 53 s := Sprintf("%v %v %v %v %v", TI(0), TI8(1), TI16(2), TI32(3), TI64(4)) 54 check(t, s, "I: 0 I8: 1 I16: 2 I32: 3 I64: 4") 55 s = Sprintf("%v %v %v %v %v %v", TU(5), TU8(6), TU16(7), TU32(8), TU64(9), TUI(10)) 56 check(t, s, "U: 5 U8: 6 U16: 7 U32: 8 U64: 9 UI: 10") 57 s = Sprintf("%v %v %v", TF(1.0), TF32(2.0), TF64(3.0)) 58 check(t, s, "F: 1.000000 F32: 2.000000 F64: 3.000000") 59 s = Sprintf("%v %v", TB(true), TS("x")) 60 check(t, s, "B: true S: \"x\"") 61} 62