| // 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" |
| "strings" |
| "sync" |
| "testing" |
| "time" |
| ) |
| |
| var someTime = time.Unix(123, 0) |
| var answer int64 = 42 |
| |
| type ( |
| userDefined float64 |
| userDefinedSlice []int |
| userDefinedString string |
| ) |
| |
| 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 |
| wantusrstr userDefinedString |
| } |
| |
| // 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{} |
| ) |
| |
| func conversionTests() []conversionTest { |
| // Return a fresh instance to test so "go test -count 2" works correctly. |
| return []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"}, |
| |
| // From time.Time: |
| {s: time.Unix(1, 0).UTC(), d: &scanstr, wantstr: "1970-01-01T00:00:01Z"}, |
| {s: time.Unix(1453874597, 0).In(time.FixedZone("here", -3600*8)), d: &scanstr, wantstr: "2016-01-26T22:03:17-08:00"}, |
| {s: time.Unix(1, 2).UTC(), d: &scanstr, wantstr: "1970-01-01T00:00:01.000000002Z"}, |
| {s: time.Time{}, d: &scanstr, wantstr: "0001-01-01T00:00:00Z"}, |
| {s: time.Unix(1, 2).UTC(), d: &scanbytes, wantbytes: []byte("1970-01-01T00:00:01.000000002Z")}, |
| {s: time.Unix(1, 2).UTC(), d: &scaniface, wantiface: time.Unix(1, 2).UTC()}, |
| |
| // 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: "string", d: &scanraw, wantraw: RawBytes("string")}, |
| {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")}, |
| // time.Time has been placed here to check that the RawBytes slice gets |
| // correctly reset when calling time.Time.AppendFormat. |
| {s: time.Unix(2, 5).UTC(), d: &scanraw, wantraw: RawBytes("1970-01-01T00:00:02.000000005Z")}, |
| |
| // Strings to integers |
| {s: "255", d: &scanuint8, wantuint: 255}, |
| {s: "256", d: &scanuint8, wanterr: "converting driver.Value type string (\"256\") to a uint8: value out of range"}, |
| {s: "256", d: &scanuint16, wantuint: 256}, |
| {s: "-1", d: &scanint, wantint: -1}, |
| {s: "foo", d: &scanint, wanterr: "converting driver.Value type string (\"foo\") to a int: invalid syntax"}, |
| |
| // int64 to smaller integers |
| {s: int64(5), d: &scanuint8, wantuint: 5}, |
| {s: int64(256), d: &scanuint8, wanterr: "converting driver.Value type int64 (\"256\") to a uint8: value out of range"}, |
| {s: int64(256), d: &scanuint16, wantuint: 256}, |
| {s: int64(65536), d: &scanuint16, wanterr: "converting driver.Value type int64 (\"65536\") to a uint16: value out of range"}, |
| |
| // 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 Scan, storing driver.Value type []uint8 into type *sql.userDefinedSlice`}, |
| {s: "str", d: new(userDefinedString), wantusrstr: "str"}, |
| |
| // Other errors |
| {s: complex(1, 2), d: &scanstr, wanterr: `unsupported Scan, storing driver.Value type complex128 into type *string`}, |
| } |
| } |
| |
| 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.wantbytes != nil && string(ct.wantbytes) != string(scanbytes) { |
| errf("want byte %q, got %q", ct.wantbytes, scanbytes) |
| } |
| if ct.wantraw != nil && string(ct.wantraw) != string(scanraw) { |
| errf("want RawBytes %q, got %q", ct.wantraw, scanraw) |
| } |
| 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)) |
| } |
| if len(ct.wantusrstr) != 0 && ct.wantusrstr != *ct.d.(*userDefinedString) { |
| errf("want userDefined %q, got %q", ct.wantusrstr, *ct.d.(*userDefinedString)) |
| } |
| } |
| } |
| |
| 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"}, |
| {"time", time.Unix(2, 5).UTC(), "1970-01-01T00:00:02.000000005Z"}, |
| } |
| |
| 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) |
| } |
| } |
| |
| // https://golang.org/issues/13905 |
| func TestUserDefinedBytes(t *testing.T) { |
| type userDefinedBytes []byte |
| var u userDefinedBytes |
| v := []byte("foo") |
| |
| convertAssign(&u, v) |
| if &u[0] == &v[0] { |
| t.Fatal("userDefinedBytes got potentially dirty driver memory") |
| } |
| } |
| |
| type Valuer_V string |
| |
| func (v Valuer_V) Value() (driver.Value, error) { |
| return strings.ToUpper(string(v)), nil |
| } |
| |
| type Valuer_P string |
| |
| func (p *Valuer_P) Value() (driver.Value, error) { |
| if p == nil { |
| return "nil-to-str", nil |
| } |
| return strings.ToUpper(string(*p)), nil |
| } |
| |
| func TestDriverArgs(t *testing.T) { |
| var nilValuerVPtr *Valuer_V |
| var nilValuerPPtr *Valuer_P |
| var nilStrPtr *string |
| tests := []struct { |
| args []interface{} |
| want []driver.NamedValue |
| }{ |
| 0: { |
| args: []interface{}{Valuer_V("foo")}, |
| want: []driver.NamedValue{ |
| { |
| Ordinal: 1, |
| Value: "FOO", |
| }, |
| }, |
| }, |
| 1: { |
| args: []interface{}{nilValuerVPtr}, |
| want: []driver.NamedValue{ |
| { |
| Ordinal: 1, |
| Value: nil, |
| }, |
| }, |
| }, |
| 2: { |
| args: []interface{}{nilValuerPPtr}, |
| want: []driver.NamedValue{ |
| { |
| Ordinal: 1, |
| Value: "nil-to-str", |
| }, |
| }, |
| }, |
| 3: { |
| args: []interface{}{"plain-str"}, |
| want: []driver.NamedValue{ |
| { |
| Ordinal: 1, |
| Value: "plain-str", |
| }, |
| }, |
| }, |
| 4: { |
| args: []interface{}{nilStrPtr}, |
| want: []driver.NamedValue{ |
| { |
| Ordinal: 1, |
| Value: nil, |
| }, |
| }, |
| }, |
| } |
| for i, tt := range tests { |
| ds := &driverStmt{Locker: &sync.Mutex{}, si: stubDriverStmt{nil}} |
| got, err := driverArgsConnLocked(nil, ds, tt.args) |
| if err != nil { |
| t.Errorf("test[%d]: %v", i, err) |
| continue |
| } |
| if !reflect.DeepEqual(got, tt.want) { |
| t.Errorf("test[%d]: got %v, want %v", i, got, tt.want) |
| } |
| } |
| } |
| |
| type dec struct { |
| form byte |
| neg bool |
| coefficient [16]byte |
| exponent int32 |
| } |
| |
| func (d dec) Decompose(buf []byte) (form byte, negative bool, coefficient []byte, exponent int32) { |
| coef := make([]byte, 16) |
| copy(coef, d.coefficient[:]) |
| return d.form, d.neg, coef, d.exponent |
| } |
| |
| func (d *dec) Compose(form byte, negative bool, coefficient []byte, exponent int32) error { |
| switch form { |
| default: |
| return fmt.Errorf("unknown form %d", form) |
| case 1, 2: |
| d.form = form |
| d.neg = negative |
| return nil |
| case 0: |
| } |
| d.form = form |
| d.neg = negative |
| d.exponent = exponent |
| |
| // This isn't strictly correct, as the extra bytes could be all zero, |
| // ignore this for this test. |
| if len(coefficient) > 16 { |
| return fmt.Errorf("coefficent too large") |
| } |
| copy(d.coefficient[:], coefficient) |
| |
| return nil |
| } |
| |
| type decFinite struct { |
| neg bool |
| coefficient [16]byte |
| exponent int32 |
| } |
| |
| func (d decFinite) Decompose(buf []byte) (form byte, negative bool, coefficient []byte, exponent int32) { |
| coef := make([]byte, 16) |
| copy(coef, d.coefficient[:]) |
| return 0, d.neg, coef, d.exponent |
| } |
| |
| func (d *decFinite) Compose(form byte, negative bool, coefficient []byte, exponent int32) error { |
| switch form { |
| default: |
| return fmt.Errorf("unknown form %d", form) |
| case 1, 2: |
| return fmt.Errorf("unsupported form %d", form) |
| case 0: |
| } |
| d.neg = negative |
| d.exponent = exponent |
| |
| // This isn't strictly correct, as the extra bytes could be all zero, |
| // ignore this for this test. |
| if len(coefficient) > 16 { |
| return fmt.Errorf("coefficent too large") |
| } |
| copy(d.coefficient[:], coefficient) |
| |
| return nil |
| } |
| |
| func TestDecimal(t *testing.T) { |
| list := []struct { |
| name string |
| in decimalDecompose |
| out dec |
| err bool |
| }{ |
| {name: "same", in: dec{exponent: -6}, out: dec{exponent: -6}}, |
| |
| // Ensure reflection is not used to assign the value by using different types. |
| {name: "diff", in: decFinite{exponent: -6}, out: dec{exponent: -6}}, |
| |
| {name: "bad-form", in: dec{form: 200}, err: true}, |
| } |
| for _, item := range list { |
| t.Run(item.name, func(t *testing.T) { |
| out := dec{} |
| err := convertAssign(&out, item.in) |
| if item.err { |
| if err == nil { |
| t.Fatalf("unexpected nil error") |
| } |
| return |
| } |
| if err != nil { |
| t.Fatalf("unexpected error: %v", err) |
| } |
| if !reflect.DeepEqual(out, item.out) { |
| t.Fatalf("got %#v want %#v", out, item.out) |
| } |
| }) |
| } |
| } |
