libgo/go/fmt/stringer_test.go

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