// Copyright 2010 The Go 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 fmt_test import ( . "fmt" "testing" ) type TI int type TI8 int8 type TI16 int16 type TI32 int32 type TI64 int64 type TU uint type TU8 uint8 type TU16 uint16 type TU32 uint32 type TU64 uint64 type TUI uintptr type TF float64 type TF32 float32 type TF64 float64 type TB bool type TS string func (v TI) String() string { return Sprintf("I: %d", int(v)) } func (v TI8) String() string { return Sprintf("I8: %d", int8(v)) } func (v TI16) String() string { return Sprintf("I16: %d", int16(v)) } func (v TI32) String() string { return Sprintf("I32: %d", int32(v)) } func (v TI64) String() string { return Sprintf("I64: %d", int64(v)) } func (v TU) String() string { return Sprintf("U: %d", uint(v)) } func (v TU8) String() string { return Sprintf("U8: %d", uint8(v)) } func (v TU16) String() string { return Sprintf("U16: %d", uint16(v)) } func (v TU32) String() string { return Sprintf("U32: %d", uint32(v)) } func (v TU64) String() string { return Sprintf("U64: %d", uint64(v)) } func (v TUI) String() string { return Sprintf("UI: %d", uintptr(v)) } func (v TF) String() string { return Sprintf("F: %f", float64(v)) } func (v TF32) String() string { return Sprintf("F32: %f", float32(v)) } func (v TF64) String() string { return Sprintf("F64: %f", float64(v)) } func (v TB) String() string { return Sprintf("B: %t", bool(v)) } func (v TS) String() string { return Sprintf("S: %q", string(v)) } func check(t *testing.T, got, want string) { if got != want { t.Error(got, "!=", want) } } func TestStringer(t *testing.T) { s := Sprintf("%v %v %v %v %v", TI(0), TI8(1), TI16(2), TI32(3), TI64(4)) check(t, s, "I: 0 I8: 1 I16: 2 I32: 3 I64: 4") s = Sprintf("%v %v %v %v %v %v", TU(5), TU8(6), TU16(7), TU32(8), TU64(9), TUI(10)) check(t, s, "U: 5 U8: 6 U16: 7 U32: 8 U64: 9 UI: 10") s = Sprintf("%v %v %v", TF(1.0), TF32(2.0), TF64(3.0)) check(t, s, "F: 1.000000 F32: 2.000000 F64: 3.000000") s = Sprintf("%v %v", TB(true), TS("x")) check(t, s, "B: true S: \"x\"") }