| // 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" |
| "testing" |
| "time" |
| ) |
| |
| var someTime = time.Unix(123, 0) |
| var answer int64 = 42 |
| |
| type conversionTest struct { |
| s, d interface{} // source and destination |
| |
| // following are used if they're non-zero |
| wantint int64 |
| wantuint uint64 |
| wantstr string |
| 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) |
| } |
| |
| // Target variables for scanning into. |
| var ( |
| scanstr string |
| 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: []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"}, |
| |
| // 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}, |
| } |
| |
| 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 &dstBytes[0] == &srcBytes[0] { |
| errf("copy into interface{} didn't copy []byte data") |
| } |
| } |
| } |
| } |
| } |
| |
| 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: %s(%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: %s(%T(%v)) = %v (%T); want %v (%T)", |
| i, tt.c, tt.in, tt.in, out, out, tt.out, tt.out) |
| } |
| } |
| } |
