383 lines
12 KiB
Go
383 lines
12 KiB
Go
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// These functions are copied from database/sql/convert_test.go build 1.6.2
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package convert
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import (
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"database/sql"
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"database/sql/driver"
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"fmt"
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"reflect"
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"runtime"
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"testing"
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"time"
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)
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var someTime = time.Unix(123, 0)
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var answer int64 = 42
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type userDefined float64
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type userDefinedSlice []int
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type conversionTest struct {
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s, d interface{} // source and destination
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// following are used if they're non-zero
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wantint int64
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wantuint uint64
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wantstr string
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wantbytes []byte
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wantraw sql.RawBytes
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wantf32 float32
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wantf64 float64
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wanttime time.Time
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wantbool bool // used if d is of type *bool
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wanterr string
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wantiface interface{}
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wantptr *int64 // if non-nil, *d's pointed value must be equal to *wantptr
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wantnil bool // if true, *d must be *int64(nil)
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wantusrdef userDefined
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}
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// Target variables for scanning into.
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var (
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scanstr string
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scanbytes []byte
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scanraw sql.RawBytes
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scanint int
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scanint8 int8
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scanint16 int16
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scanint32 int32
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scanuint8 uint8
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scanuint16 uint16
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scanbool bool
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scanf32 float32
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scanf64 float64
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scantime time.Time
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scanptr *int64
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scaniface interface{}
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)
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var conversionTests = []conversionTest{
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// Exact conversions (destination pointer type matches source type)
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{s: "foo", d: &scanstr, wantstr: "foo"},
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{s: 123, d: &scanint, wantint: 123},
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{s: someTime, d: &scantime, wanttime: someTime},
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// To strings
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{s: "string", d: &scanstr, wantstr: "string"},
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{s: []byte("byteslice"), d: &scanstr, wantstr: "byteslice"},
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{s: 123, d: &scanstr, wantstr: "123"},
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{s: int8(123), d: &scanstr, wantstr: "123"},
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{s: int64(123), d: &scanstr, wantstr: "123"},
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{s: uint8(123), d: &scanstr, wantstr: "123"},
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{s: uint16(123), d: &scanstr, wantstr: "123"},
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{s: uint32(123), d: &scanstr, wantstr: "123"},
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{s: uint64(123), d: &scanstr, wantstr: "123"},
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{s: 1.5, d: &scanstr, wantstr: "1.5"},
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// From time.Time:
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{s: time.Unix(1, 0).UTC(), d: &scanstr, wantstr: "1970-01-01T00:00:01Z"},
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{s: time.Unix(1453874597, 0).In(time.FixedZone("here", -3600*8)), d: &scanstr, wantstr: "2016-01-26T22:03:17-08:00"},
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{s: time.Unix(1, 2).UTC(), d: &scanstr, wantstr: "1970-01-01T00:00:01.000000002Z"},
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{s: time.Time{}, d: &scanstr, wantstr: "0001-01-01T00:00:00Z"},
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{s: time.Unix(1, 2).UTC(), d: &scanbytes, wantbytes: []byte("1970-01-01T00:00:01.000000002Z")},
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{s: time.Unix(1, 2).UTC(), d: &scaniface, wantiface: time.Unix(1, 2).UTC()},
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// To []byte
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{s: nil, d: &scanbytes, wantbytes: nil},
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{s: "string", d: &scanbytes, wantbytes: []byte("string")},
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{s: []byte("byteslice"), d: &scanbytes, wantbytes: []byte("byteslice")},
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{s: 123, d: &scanbytes, wantbytes: []byte("123")},
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{s: int8(123), d: &scanbytes, wantbytes: []byte("123")},
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{s: int64(123), d: &scanbytes, wantbytes: []byte("123")},
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{s: uint8(123), d: &scanbytes, wantbytes: []byte("123")},
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{s: uint16(123), d: &scanbytes, wantbytes: []byte("123")},
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{s: uint32(123), d: &scanbytes, wantbytes: []byte("123")},
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{s: uint64(123), d: &scanbytes, wantbytes: []byte("123")},
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{s: 1.5, d: &scanbytes, wantbytes: []byte("1.5")},
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// To sql.RawBytes
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{s: nil, d: &scanraw, wantraw: nil},
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{s: []byte("byteslice"), d: &scanraw, wantraw: sql.RawBytes("byteslice")},
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{s: 123, d: &scanraw, wantraw: sql.RawBytes("123")},
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{s: int8(123), d: &scanraw, wantraw: sql.RawBytes("123")},
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{s: int64(123), d: &scanraw, wantraw: sql.RawBytes("123")},
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{s: uint8(123), d: &scanraw, wantraw: sql.RawBytes("123")},
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{s: uint16(123), d: &scanraw, wantraw: sql.RawBytes("123")},
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{s: uint32(123), d: &scanraw, wantraw: sql.RawBytes("123")},
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{s: uint64(123), d: &scanraw, wantraw: sql.RawBytes("123")},
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{s: 1.5, d: &scanraw, wantraw: sql.RawBytes("1.5")},
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// Strings to integers
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{s: "255", d: &scanuint8, wantuint: 255},
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{s: "256", d: &scanuint8, wanterr: "converting driver.Value type string (\"256\") to a uint8: value out of range"},
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{s: "256", d: &scanuint16, wantuint: 256},
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{s: "-1", d: &scanint, wantint: -1},
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{s: "foo", d: &scanint, wanterr: "converting driver.Value type string (\"foo\") to a int: invalid syntax"},
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// int64 to smaller integers
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{s: int64(5), d: &scanuint8, wantuint: 5},
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{s: int64(256), d: &scanuint8, wanterr: "converting driver.Value type int64 (\"256\") to a uint8: value out of range"},
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{s: int64(256), d: &scanuint16, wantuint: 256},
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{s: int64(65536), d: &scanuint16, wanterr: "converting driver.Value type int64 (\"65536\") to a uint16: value out of range"},
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// True bools
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{s: true, d: &scanbool, wantbool: true},
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{s: "True", d: &scanbool, wantbool: true},
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{s: "TRUE", d: &scanbool, wantbool: true},
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{s: "1", d: &scanbool, wantbool: true},
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{s: 1, d: &scanbool, wantbool: true},
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{s: int64(1), d: &scanbool, wantbool: true},
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{s: uint16(1), d: &scanbool, wantbool: true},
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// False bools
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{s: false, d: &scanbool, wantbool: false},
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{s: "false", d: &scanbool, wantbool: false},
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{s: "FALSE", d: &scanbool, wantbool: false},
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{s: "0", d: &scanbool, wantbool: false},
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{s: 0, d: &scanbool, wantbool: false},
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{s: int64(0), d: &scanbool, wantbool: false},
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{s: uint16(0), d: &scanbool, wantbool: false},
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// Not bools
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{s: "yup", d: &scanbool, wanterr: `sql/driver: couldn't convert "yup" into type bool`},
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{s: 2, d: &scanbool, wanterr: `sql/driver: couldn't convert 2 into type bool`},
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// Floats
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{s: float64(1.5), d: &scanf64, wantf64: float64(1.5)},
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{s: int64(1), d: &scanf64, wantf64: float64(1)},
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{s: float64(1.5), d: &scanf32, wantf32: float32(1.5)},
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{s: "1.5", d: &scanf32, wantf32: float32(1.5)},
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{s: "1.5", d: &scanf64, wantf64: float64(1.5)},
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// Pointers
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{s: interface{}(nil), d: &scanptr, wantnil: true},
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{s: int64(42), d: &scanptr, wantptr: &answer},
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// To interface{}
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{s: float64(1.5), d: &scaniface, wantiface: float64(1.5)},
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{s: int64(1), d: &scaniface, wantiface: int64(1)},
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{s: "str", d: &scaniface, wantiface: "str"},
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{s: []byte("byteslice"), d: &scaniface, wantiface: []byte("byteslice")},
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{s: true, d: &scaniface, wantiface: true},
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{s: nil, d: &scaniface},
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{s: []byte(nil), d: &scaniface, wantiface: []byte(nil)},
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// To a user-defined type
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{s: 1.5, d: new(userDefined), wantusrdef: 1.5},
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{s: int64(123), d: new(userDefined), wantusrdef: 123},
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{s: "1.5", d: new(userDefined), wantusrdef: 1.5},
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{s: []byte{1, 2, 3}, d: new(userDefinedSlice), wanterr: `unsupported Scan, storing driver.Value type []uint8 into type *convert.userDefinedSlice`},
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// Other errors
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{s: complex(1, 2), d: &scanstr, wanterr: `unsupported Scan, storing driver.Value type complex128 into type *string`},
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}
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func intPtrValue(intptr interface{}) interface{} {
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return reflect.Indirect(reflect.Indirect(reflect.ValueOf(intptr))).Int()
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}
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func intValue(intptr interface{}) int64 {
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return reflect.Indirect(reflect.ValueOf(intptr)).Int()
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}
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func uintValue(intptr interface{}) uint64 {
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return reflect.Indirect(reflect.ValueOf(intptr)).Uint()
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}
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func float64Value(ptr interface{}) float64 {
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return *(ptr.(*float64))
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}
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func float32Value(ptr interface{}) float32 {
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return *(ptr.(*float32))
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}
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func getTimeValue(ptr interface{}) time.Time {
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return *(ptr.(*time.Time))
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}
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func TestConversions(t *testing.T) {
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for n, ct := range conversionTests {
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err := ConvertAssign(ct.d, ct.s)
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errstr := ""
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if err != nil {
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errstr = err.Error()
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}
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errf := func(format string, args ...interface{}) {
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base := fmt.Sprintf("ConvertAssign #%d: for %v (%T) -> %T, ", n, ct.s, ct.s, ct.d)
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t.Errorf(base+format, args...)
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}
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if errstr != ct.wanterr {
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errf("got error %q, want error %q", errstr, ct.wanterr)
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}
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if ct.wantstr != "" && ct.wantstr != scanstr {
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errf("want string %q, got %q", ct.wantstr, scanstr)
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}
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if ct.wantint != 0 && ct.wantint != intValue(ct.d) {
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errf("want int %d, got %d", ct.wantint, intValue(ct.d))
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}
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if ct.wantuint != 0 && ct.wantuint != uintValue(ct.d) {
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errf("want uint %d, got %d", ct.wantuint, uintValue(ct.d))
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}
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if ct.wantf32 != 0 && ct.wantf32 != float32Value(ct.d) {
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errf("want float32 %v, got %v", ct.wantf32, float32Value(ct.d))
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}
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if ct.wantf64 != 0 && ct.wantf64 != float64Value(ct.d) {
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errf("want float32 %v, got %v", ct.wantf64, float64Value(ct.d))
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}
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if bp, boolTest := ct.d.(*bool); boolTest && *bp != ct.wantbool && ct.wanterr == "" {
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errf("want bool %v, got %v", ct.wantbool, *bp)
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}
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if !ct.wanttime.IsZero() && !ct.wanttime.Equal(getTimeValue(ct.d)) {
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errf("want time %v, got %v", ct.wanttime, getTimeValue(ct.d))
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}
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if ct.wantnil && *ct.d.(**int64) != nil {
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errf("want nil, got %v", intPtrValue(ct.d))
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}
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if ct.wantptr != nil {
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if *ct.d.(**int64) == nil {
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errf("want pointer to %v, got nil", *ct.wantptr)
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} else if *ct.wantptr != intPtrValue(ct.d) {
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errf("want pointer to %v, got %v", *ct.wantptr, intPtrValue(ct.d))
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}
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}
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if ifptr, ok := ct.d.(*interface{}); ok {
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if !reflect.DeepEqual(ct.wantiface, scaniface) {
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errf("want interface %#v, got %#v", ct.wantiface, scaniface)
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continue
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}
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if srcBytes, ok := ct.s.([]byte); ok {
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dstBytes := (*ifptr).([]byte)
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if len(srcBytes) > 0 && &dstBytes[0] == &srcBytes[0] {
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errf("copy into interface{} didn't copy []byte data")
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}
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}
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}
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if ct.wantusrdef != 0 && ct.wantusrdef != *ct.d.(*userDefined) {
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errf("want userDefined %f, got %f", ct.wantusrdef, *ct.d.(*userDefined))
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}
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}
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}
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func TestNullString(t *testing.T) {
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var ns sql.NullString
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ConvertAssign(&ns, []byte("foo"))
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if !ns.Valid {
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t.Errorf("expecting not null")
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}
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if ns.String != "foo" {
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t.Errorf("expecting foo; got %q", ns.String)
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}
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ConvertAssign(&ns, nil)
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if ns.Valid {
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t.Errorf("expecting null on nil")
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}
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if ns.String != "" {
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t.Errorf("expecting blank on nil; got %q", ns.String)
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}
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}
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type valueConverterTest struct {
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c driver.ValueConverter
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in, out interface{}
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err string
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}
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var valueConverterTests = []valueConverterTest{
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{driver.DefaultParameterConverter, sql.NullString{"hi", true}, "hi", ""},
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{driver.DefaultParameterConverter, sql.NullString{"", false}, nil, ""},
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}
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func TestValueConverters(t *testing.T) {
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for i, tt := range valueConverterTests {
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out, err := tt.c.ConvertValue(tt.in)
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goterr := ""
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if err != nil {
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goterr = err.Error()
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}
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if goterr != tt.err {
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t.Errorf("test %d: %T(%T(%v)) error = %q; want error = %q",
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i, tt.c, tt.in, tt.in, goterr, tt.err)
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}
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if tt.err != "" {
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continue
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}
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if !reflect.DeepEqual(out, tt.out) {
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t.Errorf("test %d: %T(%T(%v)) = %v (%T); want %v (%T)",
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i, tt.c, tt.in, tt.in, out, out, tt.out, tt.out)
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}
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}
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}
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// Tests that assigning to sql.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(sql.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)
|
||
|
|
}
|
||
|
|
}
|