// Copyright 2011 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 sql import ( "database/sql/driver" "fmt" "reflect" "runtime" "testing" "time") var someTime = time.Unix(123, 0)var answer int64 = 42 type userDefined float64 type userDefinedSlice []int type conversionTest struct { s, d interface{} // source and destination // following are used if they're non-zero wantint int64 wantuint uint64 wantstr string wantbytes []byte wantraw RawBytes wantf32 float32 wantf64 float64 wanttime time.Time wantbool bool // used if d is of type *bool wanterr string wantiface interface{} wantptr *int64 // if non-nil, *d's pointed value must be equal to *wantptr wantnil bool // if true, *d must be *int64(nil) wantusrdef userDefined} // Target variables for scanning into.var ( scanstr string scanbytes []byte scanraw RawBytes scanint int scanint8 int8 scanint16 int16 scanint32 int32 scanuint8 uint8 scanuint16 uint16 scanbool bool scanf32 float32 scanf64 float64 scantime time.Time scanptr *int64 scaniface interface{}) var conversionTests = []conversionTest{ // Exact conversions (destination pointer type matches source type) {s: "foo", d: &scanstr, wantstr: "foo"}, {s: 123, d: &scanint, wantint: 123}, {s: someTime, d: &scantime, wanttime: someTime}, // To strings {s: "string", d: &scanstr, wantstr: "string"}, {s: []byte("byteslice"), d: &scanstr, wantstr: "byteslice"}, {s: 123, d: &scanstr, wantstr: "123"}, {s: int8(123), d: &scanstr, wantstr: "123"}, {s: int64(123), d: &scanstr, wantstr: "123"}, {s: uint8(123), d: &scanstr, wantstr: "123"}, {s: uint16(123), d: &scanstr, wantstr: "123"}, {s: uint32(123), d: &scanstr, wantstr: "123"}, {s: uint64(123), d: &scanstr, wantstr: "123"}, {s: 1.5, d: &scanstr, wantstr: "1.5"}, // To []byte {s: nil, d: &scanbytes, wantbytes: nil}, {s: "string", d: &scanbytes, wantbytes: []byte("string")}, {s: []byte("byteslice"), d: &scanbytes, wantbytes: []byte("byteslice")}, {s: 123, d: &scanbytes, wantbytes: []byte("123")}, {s: int8(123), d: &scanbytes, wantbytes: []byte("123")}, {s: int64(123), d: &scanbytes, wantbytes: []byte("123")}, {s: uint8(123), d: &scanbytes, wantbytes: []byte("123")}, {s: uint16(123), d: &scanbytes, wantbytes: []byte("123")}, {s: uint32(123), d: &scanbytes, wantbytes: []byte("123")}, {s: uint64(123), d: &scanbytes, wantbytes: []byte("123")}, {s: 1.5, d: &scanbytes, wantbytes: []byte("1.5")}, // To RawBytes {s: nil, d: &scanraw, wantraw: nil}, {s: []byte("byteslice"), d: &scanraw, wantraw: RawBytes("byteslice")}, {s: 123, d: &scanraw, wantraw: RawBytes("123")}, {s: int8(123), d: &scanraw, wantraw: RawBytes("123")}, {s: int64(123), d: &scanraw, wantraw: RawBytes("123")}, {s: uint8(123), d: &scanraw, wantraw: RawBytes("123")}, {s: uint16(123), d: &scanraw, wantraw: RawBytes("123")}, {s: uint32(123), d: &scanraw, wantraw: RawBytes("123")}, {s: uint64(123), d: &scanraw, wantraw: RawBytes("123")}, {s: 1.5, d: &scanraw, wantraw: RawBytes("1.5")}, // Strings to integers {s: "255", d: &scanuint8, wantuint: 255}, {s: "256", d: &scanuint8, wanterr: `converting string "256" to a uint8: strconv.ParseUint: parsing "256": value out of range`}, {s: "256", d: &scanuint16, wantuint: 256}, {s: "-1", d: &scanint, wantint: -1}, {s: "foo", d: &scanint, wanterr: `converting string "foo" to a int: strconv.ParseInt: parsing "foo": invalid syntax`}, // True bools {s: true, d: &scanbool, wantbool: true}, {s: "True", d: &scanbool, wantbool: true}, {s: "TRUE", d: &scanbool, wantbool: true}, {s: "1", d: &scanbool, wantbool: true}, {s: 1, d: &scanbool, wantbool: true}, {s: int64(1), d: &scanbool, wantbool: true}, {s: uint16(1), d: &scanbool, wantbool: true}, // False bools {s: false, d: &scanbool, wantbool: false}, {s: "false", d: &scanbool, wantbool: false}, {s: "FALSE", d: &scanbool, wantbool: false}, {s: "0", d: &scanbool, wantbool: false}, {s: 0, d: &scanbool, wantbool: false}, {s: int64(0), d: &scanbool, wantbool: false}, {s: uint16(0), d: &scanbool, wantbool: false}, // Not bools {s: "yup", d: &scanbool, wanterr: `sql/driver: couldn't convert "yup" into type bool`}, {s: 2, d: &scanbool, wanterr: `sql/driver: couldn't convert 2 into type bool`}, // Floats {s: float64(1.5), d: &scanf64, wantf64: float64(1.5)}, {s: int64(1), d: &scanf64, wantf64: float64(1)}, {s: float64(1.5), d: &scanf32, wantf32: float32(1.5)}, {s: "1.5", d: &scanf32, wantf32: float32(1.5)}, {s: "1.5", d: &scanf64, wantf64: float64(1.5)}, // Pointers {s: interface{}(nil), d: &scanptr, wantnil: true}, {s: int64(42), d: &scanptr, wantptr: &answer}, // To interface{} {s: float64(1.5), d: &scaniface, wantiface: float64(1.5)}, {s: int64(1), d: &scaniface, wantiface: int64(1)}, {s: "str", d: &scaniface, wantiface: "str"}, {s: []byte("byteslice"), d: &scaniface, wantiface: []byte("byteslice")}, {s: true, d: &scaniface, wantiface: true}, {s: nil, d: &scaniface}, {s: []byte(nil), d: &scaniface, wantiface: []byte(nil)}, // To a user-defined type {s: 1.5, d: new(userDefined), wantusrdef: 1.5}, {s: int64(123), d: new(userDefined), wantusrdef: 123}, {s: "1.5", d: new(userDefined), wantusrdef: 1.5}, {s: []byte{1, 2, 3}, d: new(userDefinedSlice), wanterr: `unsupported driver -> Scan pair: []uint8 -> *sql.userDefinedSlice`},} func intPtrValue(intptr interface{}) interface{} { return reflect.Indirect(reflect.Indirect(reflect.ValueOf(intptr))).Int()} func intValue(intptr interface{}) int64 { return reflect.Indirect(reflect.ValueOf(intptr)).Int()} func uintValue(intptr interface{}) uint64 { return reflect.Indirect(reflect.ValueOf(intptr)).Uint()} func float64Value(ptr interface{}) float64 { return *(ptr.(*float64))} func float32Value(ptr interface{}) float32 { return *(ptr.(*float32))} func timeValue(ptr interface{}) time.Time { return *(ptr.(*time.Time))} func TestConversions(t *testing.T) { for n, ct := range conversionTests { err := convertAssign(ct.d, ct.s) errstr := "" if err != nil { errstr = err.Error() } errf := func(format string, args ...interface{}) { base := fmt.Sprintf("convertAssign #%d: for %v (%T) -> %T, ", n, ct.s, ct.s, ct.d) t.Errorf(base+format, args...) } if errstr != ct.wanterr { errf("got error %q, want error %q", errstr, ct.wanterr) } if ct.wantstr != "" && ct.wantstr != scanstr { errf("want string %q, got %q", ct.wantstr, scanstr) } if ct.wantint != 0 && ct.wantint != intValue(ct.d) { errf("want int %d, got %d", ct.wantint, intValue(ct.d)) } if ct.wantuint != 0 && ct.wantuint != uintValue(ct.d) { errf("want uint %d, got %d", ct.wantuint, uintValue(ct.d)) } if ct.wantf32 != 0 && ct.wantf32 != float32Value(ct.d) { errf("want float32 %v, got %v", ct.wantf32, float32Value(ct.d)) } if ct.wantf64 != 0 && ct.wantf64 != float64Value(ct.d) { errf("want float32 %v, got %v", ct.wantf64, float64Value(ct.d)) } if bp, boolTest := ct.d.(*bool); boolTest && *bp != ct.wantbool && ct.wanterr == "" { errf("want bool %v, got %v", ct.wantbool, *bp) } if !ct.wanttime.IsZero() && !ct.wanttime.Equal(timeValue(ct.d)) { errf("want time %v, got %v", ct.wanttime, timeValue(ct.d)) } if ct.wantnil && *ct.d.(**int64) != nil { errf("want nil, got %v", intPtrValue(ct.d)) } if ct.wantptr != nil { if *ct.d.(**int64) == nil { errf("want pointer to %v, got nil", *ct.wantptr) } else if *ct.wantptr != intPtrValue(ct.d) { errf("want pointer to %v, got %v", *ct.wantptr, intPtrValue(ct.d)) } } if ifptr, ok := ct.d.(*interface{}); ok { if !reflect.DeepEqual(ct.wantiface, scaniface) { errf("want interface %#v, got %#v", ct.wantiface, scaniface) continue } if srcBytes, ok := ct.s.([]byte); ok { dstBytes := (*ifptr).([]byte) if len(srcBytes) > 0 && &dstBytes[0] == &srcBytes[0] { errf("copy into interface{} didn't copy []byte data") } } } if ct.wantusrdef != 0 && ct.wantusrdef != *ct.d.(*userDefined) { errf("want userDefined %f, got %f", ct.wantusrdef, *ct.d.(*userDefined)) } }} func TestNullString(t *testing.T) { var ns NullString convertAssign(&ns, []byte("foo")) if !ns.Valid { t.Errorf("expecting not null") } if ns.String != "foo" { t.Errorf("expecting foo; got %q", ns.String) } convertAssign(&ns, nil) if ns.Valid { t.Errorf("expecting null on nil") } if ns.String != "" { t.Errorf("expecting blank on nil; got %q", ns.String) }} type valueConverterTest struct { c driver.ValueConverter in, out interface{} err string} var valueConverterTests = []valueConverterTest{ {driver.DefaultParameterConverter, NullString{"hi", true}, "hi", ""}, {driver.DefaultParameterConverter, NullString{"", false}, nil, ""},} func TestValueConverters(t *testing.T) { for i, tt := range valueConverterTests { out, err := tt.c.ConvertValue(tt.in) goterr := "" if err != nil { goterr = err.Error() } if goterr != tt.err { t.Errorf("test %d: %T(%T(%v)) error = %q; want error = %q", i, tt.c, tt.in, tt.in, goterr, tt.err) } if tt.err != "" { continue } if !reflect.DeepEqual(out, tt.out) { t.Errorf("test %d: %T(%T(%v)) = %v (%T); want %v (%T)", i, tt.c, tt.in, tt.in, out, out, tt.out, tt.out) } }} // Tests that assigning to RawBytes doesn't allocate (and also works).func TestRawBytesAllocs(t *testing.T) { var tests = []struct { name string in interface{} want string }{ {"uint64", uint64(12345678), "12345678"}, {"uint32", uint32(1234), "1234"}, {"uint16", uint16(12), "12"}, {"uint8", uint8(1), "1"}, {"uint", uint(123), "123"}, {"int", int(123), "123"}, {"int8", int8(1), "1"}, {"int16", int16(12), "12"}, {"int32", int32(1234), "1234"}, {"int64", int64(12345678), "12345678"}, {"float32", float32(1.5), "1.5"}, {"float64", float64(64), "64"}, {"bool", false, "false"}, } buf := make(RawBytes, 10) test := func(name string, in interface{}, want string) { if err := convertAssign(&buf, in); err != nil { t.Fatalf("%s: convertAssign = %v", name, err) } match := len(buf) == len(want) if match { for i, b := range buf { if want[i] != b { match = false break } } } if !match { t.Fatalf("%s: got %q (len %d); want %q (len %d)", name, buf, len(buf), want, len(want)) } } n := testing.AllocsPerRun(100, func() { for _, tt := range tests { test(tt.name, tt.in, tt.want) } }) // The numbers below are only valid for 64-bit interface word sizes, // and gc. With 32-bit words there are more convT2E allocs, and // with gccgo, only pointers currently go in interface data. // So only care on amd64 gc for now. measureAllocs := runtime.GOARCH == "amd64" && runtime.Compiler == "gc" if n > 0.5 && measureAllocs { t.Fatalf("allocs = %v; want 0", n) } // This one involves a convT2E allocation, string -> interface{} n = testing.AllocsPerRun(100, func() { test("string", "foo", "foo") }) if n > 1.5 && measureAllocs { t.Fatalf("allocs = %v; want max 1", n) }}
// Copyright 2011 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 sql
import (
"database/sql/driver"
"fmt"
"reflect"
"runtime"
"testing"
"time"
)
var someTime = time.Unix(123, 0)
var answer int64 = 42
type userDefined float64
type userDefinedSlice []int
type conversionTest struct {
s, d interface{} // source and destination
// following are used if they're non-zero
wantint int64
wantuint uint64
wantstr string
wantbytes []byte
wantraw RawBytes
wantf32 float32
wantf64 float64
wanttime time.Time
wantbool bool // used if d is of type *bool
wanterr string
wantiface interface{}
wantptr *int64 // if non-nil, *d's pointed value must be equal to *wantptr
wantnil bool // if true, *d must be *int64(nil)
wantusrdef userDefined
}
// Target variables for scanning into.
var (
scanstr string
scanbytes []byte
scanraw RawBytes
scanint int
scanint8 int8
scanint16 int16
scanint32 int32
scanuint8 uint8
scanuint16 uint16
scanbool bool
scanf32 float32
scanf64 float64
scantime time.Time
scanptr *int64
scaniface interface{}
)
var conversionTests = []conversionTest{
// Exact conversions (destination pointer type matches source type)
{s: "foo", d: &scanstr, wantstr: "foo"},
{s: 123, d: &scanint, wantint: 123},
{s: someTime, d: &scantime, wanttime: someTime},
// To strings
{s: "string", d: &scanstr, wantstr: "string"},
{s: []byte("byteslice"), d: &scanstr, wantstr: "byteslice"},
{s: 123, d: &scanstr, wantstr: "123"},
{s: int8(123), d: &scanstr, wantstr: "123"},
{s: int64(123), d: &scanstr, wantstr: "123"},
{s: uint8(123), d: &scanstr, wantstr: "123"},
{s: uint16(123), d: &scanstr, wantstr: "123"},
{s: uint32(123), d: &scanstr, wantstr: "123"},
{s: uint64(123), d: &scanstr, wantstr: "123"},
{s: 1.5, d: &scanstr, wantstr: "1.5"},
// To []byte
{s: nil, d: &scanbytes, wantbytes: nil},
{s: "string", d: &scanbytes, wantbytes: []byte("string")},
{s: []byte("byteslice"), d: &scanbytes, wantbytes: []byte("byteslice")},
{s: 123, d: &scanbytes, wantbytes: []byte("123")},
{s: int8(123), d: &scanbytes, wantbytes: []byte("123")},
{s: int64(123), d: &scanbytes, wantbytes: []byte("123")},
{s: uint8(123), d: &scanbytes, wantbytes: []byte("123")},
{s: uint16(123), d: &scanbytes, wantbytes: []byte("123")},
{s: uint32(123), d: &scanbytes, wantbytes: []byte("123")},
{s: uint64(123), d: &scanbytes, wantbytes: []byte("123")},
{s: 1.5, d: &scanbytes, wantbytes: []byte("1.5")},
// To RawBytes
{s: nil, d: &scanraw, wantraw: nil},
{s: []byte("byteslice"), d: &scanraw, wantraw: RawBytes("byteslice")},
{s: 123, d: &scanraw, wantraw: RawBytes("123")},
{s: int8(123), d: &scanraw, wantraw: RawBytes("123")},
{s: int64(123), d: &scanraw, wantraw: RawBytes("123")},
{s: uint8(123), d: &scanraw, wantraw: RawBytes("123")},
{s: uint16(123), d: &scanraw, wantraw: RawBytes("123")},
{s: uint32(123), d: &scanraw, wantraw: RawBytes("123")},
{s: uint64(123), d: &scanraw, wantraw: RawBytes("123")},
{s: 1.5, d: &scanraw, wantraw: RawBytes("1.5")},
// Strings to integers
{s: "255", d: &scanuint8, wantuint: 255},
{s: "256", d: &scanuint8, wanterr: `converting string "256" to a uint8: strconv.ParseUint: parsing "256": value out of range`},
{s: "256", d: &scanuint16, wantuint: 256},
{s: "-1", d: &scanint, wantint: -1},
{s: "foo", d: &scanint, wanterr: `converting string "foo" to a int: strconv.ParseInt: parsing "foo": invalid syntax`},
// True bools
{s: true, d: &scanbool, wantbool: true},
{s: "True", d: &scanbool, wantbool: true},
{s: "TRUE", d: &scanbool, wantbool: true},
{s: "1", d: &scanbool, wantbool: true},
{s: 1, d: &scanbool, wantbool: true},
{s: int64(1), d: &scanbool, wantbool: true},
{s: uint16(1), d: &scanbool, wantbool: true},
// False bools
{s: false, d: &scanbool, wantbool: false},
{s: "false", d: &scanbool, wantbool: false},
{s: "FALSE", d: &scanbool, wantbool: false},
{s: "0", d: &scanbool, wantbool: false},
{s: 0, d: &scanbool, wantbool: false},
{s: int64(0), d: &scanbool, wantbool: false},
{s: uint16(0), d: &scanbool, wantbool: false},
// Not bools
{s: "yup", d: &scanbool, wanterr: `sql/driver: couldn't convert "yup" into type bool`},
{s: 2, d: &scanbool, wanterr: `sql/driver: couldn't convert 2 into type bool`},
// Floats
{s: float64(1.5), d: &scanf64, wantf64: float64(1.5)},
{s: int64(1), d: &scanf64, wantf64: float64(1)},
{s: float64(1.5), d: &scanf32, wantf32: float32(1.5)},
{s: "1.5", d: &scanf32, wantf32: float32(1.5)},
{s: "1.5", d: &scanf64, wantf64: float64(1.5)},
// Pointers
{s: interface{}(nil), d: &scanptr, wantnil: true},
{s: int64(42), d: &scanptr, wantptr: &answer},
// To interface{}
{s: float64(1.5), d: &scaniface, wantiface: float64(1.5)},
{s: int64(1), d: &scaniface, wantiface: int64(1)},
{s: "str", d: &scaniface, wantiface: "str"},
{s: []byte("byteslice"), d: &scaniface, wantiface: []byte("byteslice")},
{s: true, d: &scaniface, wantiface: true},
{s: nil, d: &scaniface},
{s: []byte(nil), d: &scaniface, wantiface: []byte(nil)},
// To a user-defined type
{s: 1.5, d: new(userDefined), wantusrdef: 1.5},
{s: int64(123), d: new(userDefined), wantusrdef: 123},
{s: "1.5", d: new(userDefined), wantusrdef: 1.5},
{s: []byte{1, 2, 3}, d: new(userDefinedSlice), wanterr: `unsupported driver -> Scan pair: []uint8 -> *sql.userDefinedSlice`},
}
func intPtrValue(intptr interface{}) interface{} {
return reflect.Indirect(reflect.Indirect(reflect.ValueOf(intptr))).Int()
}
func intValue(intptr interface{}) int64 {
return reflect.Indirect(reflect.ValueOf(intptr)).Int()
}
func uintValue(intptr interface{}) uint64 {
return reflect.Indirect(reflect.ValueOf(intptr)).Uint()
}
func float64Value(ptr interface{}) float64 {
return *(ptr.(*float64))
}
func float32Value(ptr interface{}) float32 {
return *(ptr.(*float32))
}
func timeValue(ptr interface{}) time.Time {
return *(ptr.(*time.Time))
}
func TestConversions(t *testing.T) {
for n, ct := range conversionTests {
err := convertAssign(ct.d, ct.s)
errstr := ""
if err != nil {
errstr = err.Error()
}
errf := func(format string, args ...interface{}) {
base := fmt.Sprintf("convertAssign #%d: for %v (%T) -> %T, ", n, ct.s, ct.s, ct.d)
t.Errorf(base+format, args...)
}
if errstr != ct.wanterr {
errf("got error %q, want error %q", errstr, ct.wanterr)
}
if ct.wantstr != "" && ct.wantstr != scanstr {
errf("want string %q, got %q", ct.wantstr, scanstr)
}
if ct.wantint != 0 && ct.wantint != intValue(ct.d) {
errf("want int %d, got %d", ct.wantint, intValue(ct.d))
}
if ct.wantuint != 0 && ct.wantuint != uintValue(ct.d) {
errf("want uint %d, got %d", ct.wantuint, uintValue(ct.d))
}
if ct.wantf32 != 0 && ct.wantf32 != float32Value(ct.d) {
errf("want float32 %v, got %v", ct.wantf32, float32Value(ct.d))
}
if ct.wantf64 != 0 && ct.wantf64 != float64Value(ct.d) {
errf("want float32 %v, got %v", ct.wantf64, float64Value(ct.d))
}
if bp, boolTest := ct.d.(*bool); boolTest && *bp != ct.wantbool && ct.wanterr == "" {
errf("want bool %v, got %v", ct.wantbool, *bp)
}
if !ct.wanttime.IsZero() && !ct.wanttime.Equal(timeValue(ct.d)) {
errf("want time %v, got %v", ct.wanttime, timeValue(ct.d))
}
if ct.wantnil && *ct.d.(**int64) != nil {
errf("want nil, got %v", intPtrValue(ct.d))
}
if ct.wantptr != nil {
if *ct.d.(**int64) == nil {
errf("want pointer to %v, got nil", *ct.wantptr)
} else if *ct.wantptr != intPtrValue(ct.d) {
errf("want pointer to %v, got %v", *ct.wantptr, intPtrValue(ct.d))
}
}
if ifptr, ok := ct.d.(*interface{}); ok {
if !reflect.DeepEqual(ct.wantiface, scaniface) {
errf("want interface %#v, got %#v", ct.wantiface, scaniface)
continue
}
if srcBytes, ok := ct.s.([]byte); ok {
dstBytes := (*ifptr).([]byte)
if len(srcBytes) > 0 && &dstBytes[0] == &srcBytes[0] {
errf("copy into interface{} didn't copy []byte data")
}
}
}
if ct.wantusrdef != 0 && ct.wantusrdef != *ct.d.(*userDefined) {
errf("want userDefined %f, got %f", ct.wantusrdef, *ct.d.(*userDefined))
}
}
}
func TestNullString(t *testing.T) {
var ns NullString
convertAssign(&ns, []byte("foo"))
if !ns.Valid {
t.Errorf("expecting not null")
}
if ns.String != "foo" {
t.Errorf("expecting foo; got %q", ns.String)
}
convertAssign(&ns, nil)
if ns.Valid {
t.Errorf("expecting null on nil")
}
if ns.String != "" {
t.Errorf("expecting blank on nil; got %q", ns.String)
}
}
type valueConverterTest struct {
c driver.ValueConverter
in, out interface{}
err string
}
var valueConverterTests = []valueConverterTest{
{driver.DefaultParameterConverter, NullString{"hi", true}, "hi", ""},
{driver.DefaultParameterConverter, NullString{"", false}, nil, ""},
}
func TestValueConverters(t *testing.T) {
for i, tt := range valueConverterTests {
out, err := tt.c.ConvertValue(tt.in)
goterr := ""
if err != nil {
goterr = err.Error()
}
if goterr != tt.err {
t.Errorf("test %d: %T(%T(%v)) error = %q; want error = %q",
i, tt.c, tt.in, tt.in, goterr, tt.err)
}
if tt.err != "" {
continue
}
if !reflect.DeepEqual(out, tt.out) {
t.Errorf("test %d: %T(%T(%v)) = %v (%T); want %v (%T)",
i, tt.c, tt.in, tt.in, out, out, tt.out, tt.out)
}
}
}
// Tests that assigning to RawBytes doesn't allocate (and also works).
func TestRawBytesAllocs(t *testing.T) {
var tests = []struct {
name string
in interface{}
want string
}{
{"uint64", uint64(12345678), "12345678"},
{"uint32", uint32(1234), "1234"},
{"uint16", uint16(12), "12"},
{"uint8", uint8(1), "1"},
{"uint", uint(123), "123"},
{"int", int(123), "123"},
{"int8", int8(1), "1"},
{"int16", int16(12), "12"},
{"int32", int32(1234), "1234"},
{"int64", int64(12345678), "12345678"},
{"float32", float32(1.5), "1.5"},
{"float64", float64(64), "64"},
{"bool", false, "false"},
}
buf := make(RawBytes, 10)
test := func(name string, in interface{}, want string) {
if err := convertAssign(&buf, in); err != nil {
t.Fatalf("%s: convertAssign = %v", name, err)
}
match := len(buf) == len(want)
if match {
for i, b := range buf {
if want[i] != b {
match = false
break
}
}
}
if !match {
t.Fatalf("%s: got %q (len %d); want %q (len %d)", name, buf, len(buf), want, len(want))
}
}
n := testing.AllocsPerRun(100, func() {
for _, tt := range tests {
test(tt.name, tt.in, tt.want)
}
})
// The numbers below are only valid for 64-bit interface word sizes,
// and gc. With 32-bit words there are more convT2E allocs, and
// with gccgo, only pointers currently go in interface data.
// So only care on amd64 gc for now.
measureAllocs := runtime.GOARCH == "amd64" && runtime.Compiler == "gc"
if n > 0.5 && measureAllocs {
t.Fatalf("allocs = %v; want 0", n)
}
// This one involves a convT2E allocation, string -> interface{}
n = testing.AllocsPerRun(100, func() {
test("string", "foo", "foo")
})
if n > 1.5 && measureAllocs {
t.Fatalf("allocs = %v; want max 1", n)
}
}