package reflect_test
import (
- "container/vector"
+ "bytes"
+ "encoding/base64"
"fmt"
"io"
"os"
. "reflect"
+ /* "runtime" */
"testing"
"unsafe"
)
+func TestBool(t *testing.T) {
+ v := ValueOf(true)
+ if v.Bool() != true {
+ t.Fatal("ValueOf(true).Bool() = false")
+ }
+}
+
type integer int
type T struct {
a int
}
}
-func typestring(i interface{}) string { return Typeof(i).String() }
+func typestring(i interface{}) string { return TypeOf(i).String() }
var typeTests = []pair{
{struct{ x int }{}, "int"},
{struct{ x uint16 }{}, "uint16"},
{struct{ x uint32 }{}, "uint32"},
{struct{ x uint64 }{}, "uint64"},
- {struct{ x float }{}, "float"},
{struct{ x float32 }{}, "float32"},
{struct{ x float64 }{}, "float64"},
{struct{ x int8 }{}, "int8"},
},
{struct {
x struct {
- a int8 "hi there"
+ a int8 `reflect:"hi there"`
}
}{},
- `struct { a int8 "hi there" }`,
+ `struct { a int8 "reflect:\"hi there\"" }`,
},
{struct {
x struct {
- a int8 "hi \x00there\t\n\"\\"
+ a int8 `reflect:"hi \x00there\t\n\"\\"`
}
}{},
- `struct { a int8 "hi \x00there\t\n\"\\" }`,
+ `struct { a int8 "reflect:\"hi \\x00there\\t\\n\\\"\\\\\"" }`,
},
{struct {
x struct {
b()
})
}{},
- "interface { a(func(func(int) int) func(func(int)) int); b() }",
+ "interface { reflect_test.a(func(func(int) int) func(func(int)) int); reflect_test.b() }",
},
}
var valueTests = []pair{
- {(int8)(0), "8"},
- {(int16)(0), "16"},
- {(int32)(0), "32"},
- {(int64)(0), "64"},
- {(uint8)(0), "8"},
- {(uint16)(0), "16"},
- {(uint32)(0), "32"},
- {(uint64)(0), "64"},
- {(float32)(0), "256.25"},
- {(float64)(0), "512.125"},
- {(string)(""), "stringy cheese"},
- {(bool)(false), "true"},
- {(*int8)(nil), "*int8(0)"},
- {(**int8)(nil), "**int8(0)"},
- {[5]int32{}, "[5]int32{0, 0, 0, 0, 0}"},
- {(**integer)(nil), "**reflect_test.integer(0)"},
- {(map[string]int32)(nil), "map[string] int32{<can't iterate on maps>}"},
- {(chan<- string)(nil), "chan<- string"},
- {struct {
+ {new(int8), "8"},
+ {new(int16), "16"},
+ {new(int32), "32"},
+ {new(int64), "64"},
+ {new(uint8), "8"},
+ {new(uint16), "16"},
+ {new(uint32), "32"},
+ {new(uint64), "64"},
+ {new(float32), "256.25"},
+ {new(float64), "512.125"},
+ {new(string), "stringy cheese"},
+ {new(bool), "true"},
+ {new(*int8), "*int8(0)"},
+ {new(**int8), "**int8(0)"},
+ {new([5]int32), "[5]int32{0, 0, 0, 0, 0}"},
+ {new(**integer), "**reflect_test.integer(0)"},
+ {new(map[string]int32), "map[string] int32{<can't iterate on maps>}"},
+ {new(chan<- string), "chan<- string"},
+ {new(func(a int8, b int32)), "func(int8, int32)(0)"},
+ {new(struct {
c chan *int32
d float32
- }{},
+ }),
"struct { c chan *int32; d float32 }{chan *int32, 0}",
},
- {(func(a int8, b int32))(nil), "func(int8, int32)(0)"},
- {struct{ c func(chan *integer, *int8) }{},
+ {new(struct{ c func(chan *integer, *int8) }),
"struct { c func(chan *reflect_test.integer, *int8) }{func(chan *reflect_test.integer, *int8)(0)}",
},
- {struct {
+ {new(struct {
a int8
b int32
- }{},
+ }),
"struct { a int8; b int32 }{0, 0}",
},
- {struct {
+ {new(struct {
a int8
b int8
c int32
- }{},
+ }),
"struct { a int8; b int8; c int32 }{0, 0, 0}",
},
}
func TestTypes(t *testing.T) {
for i, tt := range typeTests {
- testType(t, i, NewValue(tt.i).(*StructValue).Field(0).Type(), tt.s)
+ testType(t, i, ValueOf(tt.i).Field(0).Type(), tt.s)
}
}
func TestSet(t *testing.T) {
for i, tt := range valueTests {
- v := NewValue(tt.i)
- switch v := v.(type) {
- case *IntValue:
- switch v.Type().Kind() {
- case Int:
- v.Set(132)
- case Int8:
- v.Set(8)
- case Int16:
- v.Set(16)
- case Int32:
- v.Set(32)
- case Int64:
- v.Set(64)
- }
- case *UintValue:
- switch v.Type().Kind() {
- case Uint:
- v.Set(132)
- case Uint8:
- v.Set(8)
- case Uint16:
- v.Set(16)
- case Uint32:
- v.Set(32)
- case Uint64:
- v.Set(64)
- }
- case *FloatValue:
- switch v.Type().Kind() {
- case Float:
- v.Set(128.5)
- case Float32:
- v.Set(256.25)
- case Float64:
- v.Set(512.125)
- }
- case *ComplexValue:
- switch v.Type().Kind() {
- case Complex:
- v.Set(53200.0 + 100i)
- case Complex64:
- v.Set(532.125 + 10i)
- case Complex128:
- v.Set(564.25 + 1i)
- }
- case *StringValue:
- v.Set("stringy cheese")
- case *BoolValue:
- v.Set(true)
+ v := ValueOf(tt.i)
+ v = v.Elem()
+ switch v.Kind() {
+ case Int:
+ v.SetInt(132)
+ case Int8:
+ v.SetInt(8)
+ case Int16:
+ v.SetInt(16)
+ case Int32:
+ v.SetInt(32)
+ case Int64:
+ v.SetInt(64)
+ case Uint:
+ v.SetUint(132)
+ case Uint8:
+ v.SetUint(8)
+ case Uint16:
+ v.SetUint(16)
+ case Uint32:
+ v.SetUint(32)
+ case Uint64:
+ v.SetUint(64)
+ case Float32:
+ v.SetFloat(256.25)
+ case Float64:
+ v.SetFloat(512.125)
+ case Complex64:
+ v.SetComplex(532.125 + 10i)
+ case Complex128:
+ v.SetComplex(564.25 + 1i)
+ case String:
+ v.SetString("stringy cheese")
+ case Bool:
+ v.SetBool(true)
}
s := valueToString(v)
if s != tt.s {
func TestSetValue(t *testing.T) {
for i, tt := range valueTests {
- v := NewValue(tt.i)
- switch v := v.(type) {
- case *IntValue:
- switch v.Type().Kind() {
- case Int:
- v.SetValue(NewValue(int(132)))
- case Int8:
- v.SetValue(NewValue(int8(8)))
- case Int16:
- v.SetValue(NewValue(int16(16)))
- case Int32:
- v.SetValue(NewValue(int32(32)))
- case Int64:
- v.SetValue(NewValue(int64(64)))
- }
- case *UintValue:
- switch v.Type().Kind() {
- case Uint:
- v.SetValue(NewValue(uint(132)))
- case Uint8:
- v.SetValue(NewValue(uint8(8)))
- case Uint16:
- v.SetValue(NewValue(uint16(16)))
- case Uint32:
- v.SetValue(NewValue(uint32(32)))
- case Uint64:
- v.SetValue(NewValue(uint64(64)))
- }
- case *FloatValue:
- switch v.Type().Kind() {
- case Float:
- v.SetValue(NewValue(float(128.5)))
- case Float32:
- v.SetValue(NewValue(float32(256.25)))
- case Float64:
- v.SetValue(NewValue(float64(512.125)))
- }
- case *ComplexValue:
- switch v.Type().Kind() {
- case Complex:
- v.SetValue(NewValue(complex(53200.0 + 100i)))
- case Complex64:
- v.SetValue(NewValue(complex64(532.125 + 10i)))
- case Complex128:
- v.SetValue(NewValue(complex128(564.25 + 1i)))
- }
-
- case *StringValue:
- v.SetValue(NewValue("stringy cheese"))
- case *BoolValue:
- v.SetValue(NewValue(true))
+ v := ValueOf(tt.i).Elem()
+ switch v.Kind() {
+ case Int:
+ v.Set(ValueOf(int(132)))
+ case Int8:
+ v.Set(ValueOf(int8(8)))
+ case Int16:
+ v.Set(ValueOf(int16(16)))
+ case Int32:
+ v.Set(ValueOf(int32(32)))
+ case Int64:
+ v.Set(ValueOf(int64(64)))
+ case Uint:
+ v.Set(ValueOf(uint(132)))
+ case Uint8:
+ v.Set(ValueOf(uint8(8)))
+ case Uint16:
+ v.Set(ValueOf(uint16(16)))
+ case Uint32:
+ v.Set(ValueOf(uint32(32)))
+ case Uint64:
+ v.Set(ValueOf(uint64(64)))
+ case Float32:
+ v.Set(ValueOf(float32(256.25)))
+ case Float64:
+ v.Set(ValueOf(512.125))
+ case Complex64:
+ v.Set(ValueOf(complex64(532.125 + 10i)))
+ case Complex128:
+ v.Set(ValueOf(complex128(564.25 + 1i)))
+ case String:
+ v.Set(ValueOf("stringy cheese"))
+ case Bool:
+ v.Set(ValueOf(true))
}
s := valueToString(v)
if s != tt.s {
func TestValueToString(t *testing.T) {
for i, test := range valueToStringTests {
- s := valueToString(NewValue(test.i))
+ s := valueToString(ValueOf(test.i))
if s != test.s {
t.Errorf("#%d: have %#q, want %#q", i, s, test.s)
}
}
func TestArrayElemSet(t *testing.T) {
- v := NewValue([10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10})
- v.(*ArrayValue).Elem(4).(*IntValue).Set(123)
+ v := ValueOf(&[10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}).Elem()
+ v.Index(4).SetInt(123)
s := valueToString(v)
const want = "[10]int{1, 2, 3, 4, 123, 6, 7, 8, 9, 10}"
if s != want {
t.Errorf("[10]int: have %#q want %#q", s, want)
}
- v = NewValue([]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10})
- v.(*SliceValue).Elem(4).(*IntValue).Set(123)
+ v = ValueOf([]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10})
+ v.Index(4).SetInt(123)
s = valueToString(v)
const want1 = "[]int{1, 2, 3, 4, 123, 6, 7, 8, 9, 10}"
if s != want1 {
func TestPtrPointTo(t *testing.T) {
var ip *int32
var i int32 = 1234
- vip := NewValue(&ip)
- vi := NewValue(i)
- vip.(*PtrValue).Elem().(*PtrValue).PointTo(vi)
+ vip := ValueOf(&ip)
+ vi := ValueOf(&i).Elem()
+ vip.Elem().Set(vi.Addr())
if *ip != 1234 {
t.Errorf("got %d, want 1234", *ip)
}
ip = nil
- vp := NewValue(ip).(*PtrValue)
- vp.PointTo(vp.Elem())
+ vp := ValueOf(&ip).Elem()
+ vp.Set(Zero(vp.Type()))
if ip != nil {
t.Errorf("got non-nil (%p), want nil", ip)
}
func TestPtrSetNil(t *testing.T) {
var i int32 = 1234
ip := &i
- vip := NewValue(&ip)
- vip.(*PtrValue).Elem().(*PtrValue).Set(nil)
+ vip := ValueOf(&ip)
+ vip.Elem().Set(Zero(vip.Elem().Type()))
if ip != nil {
t.Errorf("got non-nil (%d), want nil", *ip)
}
func TestMapSetNil(t *testing.T) {
m := make(map[string]int)
- vm := NewValue(&m)
- vm.(*PtrValue).Elem().(*MapValue).Set(nil)
+ vm := ValueOf(&m)
+ vm.Elem().Set(Zero(vm.Elem().Type()))
if m != nil {
t.Errorf("got non-nil (%p), want nil", m)
}
}
-
func TestAll(t *testing.T) {
- testType(t, 1, Typeof((int8)(0)), "int8")
- testType(t, 2, Typeof((*int8)(nil)).(*PtrType).Elem(), "int8")
+ testType(t, 1, TypeOf((int8)(0)), "int8")
+ testType(t, 2, TypeOf((*int8)(nil)).Elem(), "int8")
- typ := Typeof((*struct {
+ typ := TypeOf((*struct {
c chan *int32
d float32
})(nil))
testType(t, 3, typ, "*struct { c chan *int32; d float32 }")
- etyp := typ.(*PtrType).Elem()
+ etyp := typ.Elem()
testType(t, 4, etyp, "struct { c chan *int32; d float32 }")
- styp := etyp.(*StructType)
+ styp := etyp
f := styp.Field(0)
testType(t, 5, f.Type, "chan *int32")
t.Errorf("FieldByName says absent field is present")
}
- typ = Typeof([32]int32{})
+ typ = TypeOf([32]int32{})
testType(t, 7, typ, "[32]int32")
- testType(t, 8, typ.(*ArrayType).Elem(), "int32")
+ testType(t, 8, typ.Elem(), "int32")
- typ = Typeof((map[string]*int32)(nil))
+ typ = TypeOf((map[string]*int32)(nil))
testType(t, 9, typ, "map[string] *int32")
- mtyp := typ.(*MapType)
+ mtyp := typ
testType(t, 10, mtyp.Key(), "string")
testType(t, 11, mtyp.Elem(), "*int32")
- typ = Typeof((chan<- string)(nil))
+ typ = TypeOf((chan<- string)(nil))
testType(t, 12, typ, "chan<- string")
- testType(t, 13, typ.(*ChanType).Elem(), "string")
+ testType(t, 13, typ.Elem(), "string")
// make sure tag strings are not part of element type
- typ = Typeof(struct {
- d []uint32 "TAG"
- }{}).(*StructType).Field(0).Type
+ typ = TypeOf(struct {
+ d []uint32 `reflect:"TAG"`
+ }{}).Field(0).Type
testType(t, 14, typ, "[]uint32")
}
func TestInterfaceGet(t *testing.T) {
var inter struct {
- e interface{}
+ E interface{}
}
- inter.e = 123.456
- v1 := NewValue(&inter)
- v2 := v1.(*PtrValue).Elem().(*StructValue).Field(0)
- assert(t, v2.Type().String(), "interface { }")
- i2 := v2.(*InterfaceValue).Interface()
- v3 := NewValue(i2)
- assert(t, v3.Type().String(), "float")
+ inter.E = 123.456
+ v1 := ValueOf(&inter)
+ v2 := v1.Elem().Field(0)
+ assert(t, v2.Type().String(), "interface {}")
+ i2 := v2.Interface()
+ v3 := ValueOf(i2)
+ assert(t, v3.Type().String(), "float64")
}
func TestInterfaceValue(t *testing.T) {
var inter struct {
- e interface{}
+ E interface{}
}
- inter.e = 123.456
- v1 := NewValue(&inter)
- v2 := v1.(*PtrValue).Elem().(*StructValue).Field(0)
- assert(t, v2.Type().String(), "interface { }")
- v3 := v2.(*InterfaceValue).Elem()
- assert(t, v3.Type().String(), "float")
+ inter.E = 123.456
+ v1 := ValueOf(&inter)
+ v2 := v1.Elem().Field(0)
+ assert(t, v2.Type().String(), "interface {}")
+ v3 := v2.Elem()
+ assert(t, v3.Type().String(), "float64")
i3 := v2.Interface()
- if _, ok := i3.(float); !ok {
- t.Error("v2.Interface() did not return float, got ", Typeof(i3))
+ if _, ok := i3.(float64); !ok {
+ t.Error("v2.Interface() did not return float64, got ", TypeOf(i3))
}
}
func TestFunctionValue(t *testing.T) {
- v := NewValue(func() {})
- if v.Interface() != v.Interface() {
+ var x interface{} = func() {}
+ v := ValueOf(x)
+ if v.Interface() != v.Interface() || v.Interface() != x {
t.Fatalf("TestFunction != itself")
}
assert(t, v.Type().String(), "func()")
}
-func TestCopyArray(t *testing.T) {
+var appendTests = []struct {
+ orig, extra []int
+}{
+ {make([]int, 2, 4), []int{22}},
+ {make([]int, 2, 4), []int{22, 33, 44}},
+}
+
+func sameInts(x, y []int) bool {
+ if len(x) != len(y) {
+ return false
+ }
+ for i, xx := range x {
+ if xx != y[i] {
+ return false
+ }
+ }
+ return true
+}
+
+func TestAppend(t *testing.T) {
+ for i, test := range appendTests {
+ origLen, extraLen := len(test.orig), len(test.extra)
+ want := append(test.orig, test.extra...)
+ // Convert extra from []int to []Value.
+ e0 := make([]Value, len(test.extra))
+ for j, e := range test.extra {
+ e0[j] = ValueOf(e)
+ }
+ // Convert extra from []int to *SliceValue.
+ e1 := ValueOf(test.extra)
+ // Test Append.
+ a0 := ValueOf(test.orig)
+ have0 := Append(a0, e0...).Interface().([]int)
+ if !sameInts(have0, want) {
+ t.Errorf("Append #%d: have %v, want %v (%p %p)", i, have0, want, test.orig, have0)
+ }
+ // Check that the orig and extra slices were not modified.
+ if len(test.orig) != origLen {
+ t.Errorf("Append #%d origLen: have %v, want %v", i, len(test.orig), origLen)
+ }
+ if len(test.extra) != extraLen {
+ t.Errorf("Append #%d extraLen: have %v, want %v", i, len(test.extra), extraLen)
+ }
+ // Test AppendSlice.
+ a1 := ValueOf(test.orig)
+ have1 := AppendSlice(a1, e1).Interface().([]int)
+ if !sameInts(have1, want) {
+ t.Errorf("AppendSlice #%d: have %v, want %v", i, have1, want)
+ }
+ // Check that the orig and extra slices were not modified.
+ if len(test.orig) != origLen {
+ t.Errorf("AppendSlice #%d origLen: have %v, want %v", i, len(test.orig), origLen)
+ }
+ if len(test.extra) != extraLen {
+ t.Errorf("AppendSlice #%d extraLen: have %v, want %v", i, len(test.extra), extraLen)
+ }
+ }
+}
+
+func TestCopy(t *testing.T) {
a := []int{1, 2, 3, 4, 10, 9, 8, 7}
b := []int{11, 22, 33, 44, 1010, 99, 88, 77, 66, 55, 44}
c := []int{11, 22, 33, 44, 1010, 99, 88, 77, 66, 55, 44}
- va := NewValue(&a)
- vb := NewValue(&b)
for i := 0; i < len(b); i++ {
if b[i] != c[i] {
t.Fatalf("b != c before test")
}
}
- aa := va.(*PtrValue).Elem().(*SliceValue)
- ab := vb.(*PtrValue).Elem().(*SliceValue)
+ a1 := a
+ b1 := b
+ aa := ValueOf(&a1).Elem()
+ ab := ValueOf(&b1).Elem()
for tocopy := 1; tocopy <= 7; tocopy++ {
aa.SetLen(tocopy)
- ArrayCopy(ab, aa)
+ Copy(ab, aa)
aa.SetLen(8)
for i := 0; i < tocopy; i++ {
if a[i] != b[i] {
}
}
+func TestCopyArray(t *testing.T) {
+ a := [8]int{1, 2, 3, 4, 10, 9, 8, 7}
+ b := [11]int{11, 22, 33, 44, 1010, 99, 88, 77, 66, 55, 44}
+ c := b
+ aa := ValueOf(&a).Elem()
+ ab := ValueOf(&b).Elem()
+ Copy(ab, aa)
+ for i := 0; i < len(a); i++ {
+ if a[i] != b[i] {
+ t.Errorf("(i) a[%d]=%d, b[%d]=%d", i, a[i], i, b[i])
+ }
+ }
+ for i := len(a); i < len(b); i++ {
+ if b[i] != c[i] {
+ t.Errorf("(ii) b[%d]=%d, c[%d]=%d", i, b[i], i, c[i])
+ } else {
+ t.Logf("elem %d is okay\n", i)
+ }
+ }
+}
+
func TestBigUnnamedStruct(t *testing.T) {
b := struct{ a, b, c, d int64 }{1, 2, 3, 4}
- v := NewValue(b)
+ v := ValueOf(b)
b1 := v.Interface().(struct {
a, b, c, d int64
})
if b1.a != b.a || b1.b != b.b || b1.c != b.c || b1.d != b.d {
- t.Errorf("NewValue(%v).Interface().(*Big) = %v", b, b1)
+ t.Errorf("ValueOf(%v).Interface().(*Big) = %v", b, b1)
}
}
func TestBigStruct(t *testing.T) {
b := big{1, 2, 3, 4, 5}
- v := NewValue(b)
+ v := ValueOf(b)
b1 := v.Interface().(big)
if b1.a != b.a || b1.b != b.b || b1.c != b.c || b1.d != b.d || b1.e != b.e {
- t.Errorf("NewValue(%v).Interface().(big) = %v", b, b1)
+ t.Errorf("ValueOf(%v).Interface().(big) = %v", b, b1)
}
}
{make([]int, 10), make([]int, 10), true},
{&[3]int{1, 2, 3}, &[3]int{1, 2, 3}, true},
{Basic{1, 0.5}, Basic{1, 0.5}, true},
- {os.Error(nil), os.Error(nil), true},
+ {error(nil), error(nil), true},
{map[int]string{1: "one", 2: "two"}, map[int]string{2: "two", 1: "one"}, true},
// Inequalities
{nil, 1, false},
{1, nil, false},
+ // Nil vs empty: not the same.
+ {[]int{}, []int(nil), false},
+ {[]int{}, []int{}, true},
+ {[]int(nil), []int(nil), true},
+ {map[int]int{}, map[int]int(nil), false},
+ {map[int]int{}, map[int]int{}, true},
+ {map[int]int(nil), map[int]int(nil), true},
+
// Mismatched types
{1, 1.0, false},
{int32(1), int64(1), false},
}
}
-func TestTypeof(t *testing.T) {
+func TestTypeOf(t *testing.T) {
for _, test := range deepEqualTests {
- v := NewValue(test.a)
- if v == nil {
+ v := ValueOf(test.a)
+ if !v.IsValid() {
continue
}
- typ := Typeof(test.a)
+ typ := TypeOf(test.a)
if typ != v.Type() {
- t.Errorf("Typeof(%v) = %v, but NewValue(%v).Type() = %v", test.a, typ, test.a, v.Type())
+ t.Errorf("TypeOf(%v) = %v, but ValueOf(%v).Type() = %v", test.a, typ, test.a, v.Type())
}
}
}
a int
b [3]*_Complex
c *string
- d map[float]float
+ d map[float64]float64
}
func TestDeepEqualComplexStruct(t *testing.T) {
- m := make(map[float]float)
+ m := make(map[float64]float64)
stra, strb := "hello", "hello"
a, b := new(_Complex), new(_Complex)
*a = _Complex{5, [3]*_Complex{a, b, a}, &stra, m}
}
func TestDeepEqualComplexStructInequality(t *testing.T) {
- m := make(map[float]float)
+ m := make(map[float64]float64)
stra, strb := "hello", "helloo" // Difference is here
a, b := new(_Complex), new(_Complex)
*a = _Complex{5, [3]*_Complex{a, b, a}, &stra, m}
}
}
+type UnexpT struct {
+ m map[int]int
+}
+
+func TestDeepEqualUnexportedMap(t *testing.T) {
+ // Check that DeepEqual can look at unexported fields.
+ x1 := UnexpT{map[int]int{1: 2}}
+ x2 := UnexpT{map[int]int{1: 2}}
+ if !DeepEqual(&x1, &x2) {
+ t.Error("DeepEqual(x1, x2) = false, want true")
+ }
+
+ y1 := UnexpT{map[int]int{2: 3}}
+ if DeepEqual(&x1, &y1) {
+ t.Error("DeepEqual(x1, y1) = true, want false")
+ }
+}
func check2ndField(x interface{}, offs uintptr, t *testing.T) {
- s := NewValue(x).(*StructValue)
- f := s.Type().(*StructType).Field(1)
+ s := ValueOf(x)
+ f := s.Type().Field(1)
if f.Offset != offs {
t.Error("mismatched offsets in structure alignment:", f.Offset, offs)
}
check2ndField(x1, uintptr(unsafe.Pointer(&x1.f))-uintptr(unsafe.Pointer(&x1)), t)
}
-type IsNiller interface {
- IsNil() bool
-}
-
func Nil(a interface{}, t *testing.T) {
- n := NewValue(a).(*StructValue).Field(0).(IsNiller)
+ n := ValueOf(a).Field(0)
if !n.IsNil() {
t.Errorf("%v should be nil", a)
}
}
func NotNil(a interface{}, t *testing.T) {
- n := NewValue(a).(*StructValue).Field(0).(IsNiller)
+ n := ValueOf(a).Field(0)
if n.IsNil() {
- t.Errorf("value of type %v should not be nil", NewValue(a).Type().String())
+ t.Errorf("value of type %v should not be nil", ValueOf(a).Type().String())
}
}
func TestIsNil(t *testing.T) {
- // These do not implement IsNil
- doNotNil := []interface{}{int(0), float32(0), struct{ a int }{}}
- for _, ts := range doNotNil {
- ty := Typeof(ts)
- v := MakeZero(ty)
- if _, ok := v.(IsNiller); ok {
- t.Errorf("%s is nilable; should not be", ts)
- }
- }
-
- // These do implement IsNil.
+ // These implement IsNil.
// Wrap in extra struct to hide interface type.
doNil := []interface{}{
struct{ x *int }{},
struct{ x []string }{},
}
for _, ts := range doNil {
- ty := Typeof(ts).(*StructType).Field(0).Type
- v := MakeZero(ty)
- if _, ok := v.(IsNiller); !ok {
- t.Errorf("%s %T is not nilable; should be", ts, v)
- }
+ ty := TypeOf(ts).Field(0).Type
+ v := Zero(ty)
+ v.IsNil() // panics if not okay to call
}
// Check the implementations
func TestInterfaceExtraction(t *testing.T) {
var s struct {
- w io.Writer
+ W io.Writer
}
- s.w = os.Stdout
- v := Indirect(NewValue(&s)).(*StructValue).Field(0).Interface()
- if v != s.w.(interface{}) {
- t.Error("Interface() on interface: ", v, s.w)
- }
-}
-
-func TestInterfaceEditing(t *testing.T) {
- // strings are bigger than one word,
- // so the interface conversion allocates
- // memory to hold a string and puts that
- // pointer in the interface.
- var i interface{} = "hello"
-
- // if i pass the interface value by value
- // to NewValue, i should get a fresh copy
- // of the value.
- v := NewValue(i)
-
- // and setting that copy to "bye" should
- // not change the value stored in i.
- v.(*StringValue).Set("bye")
- if i.(string) != "hello" {
- t.Errorf(`Set("bye") changed i to %s`, i.(string))
- }
-
- // the same should be true of smaller items.
- i = 123
- v = NewValue(i)
- v.(*IntValue).Set(234)
- if i.(int) != 123 {
- t.Errorf("Set(234) changed i to %d", i.(int))
+ s.W = os.Stdout
+ v := Indirect(ValueOf(&s)).Field(0).Interface()
+ if v != s.W.(interface{}) {
+ t.Error("Interface() on interface: ", v, s.W)
}
}
func TestNilPtrValueSub(t *testing.T) {
var pi *int
- if pv := NewValue(pi).(*PtrValue); pv.Elem() != nil {
- t.Error("NewValue((*int)(nil)).(*PtrValue).Elem() != nil")
+ if pv := ValueOf(pi); pv.Elem().IsValid() {
+ t.Error("ValueOf((*int)(nil)).Elem().IsValid()")
}
}
func TestMap(t *testing.T) {
m := map[string]int{"a": 1, "b": 2}
- mv := NewValue(m).(*MapValue)
+ mv := ValueOf(m)
if n := mv.Len(); n != len(m) {
t.Errorf("Len = %d, want %d", n, len(m))
}
- keys := mv.Keys()
- i := 0
- newmap := MakeMap(mv.Type().(*MapType))
+ keys := mv.MapKeys()
+ newmap := MakeMap(mv.Type())
for k, v := range m {
// Check that returned Keys match keys in range.
- // These aren't required to be in the same order,
- // but they are in this implementation, which makes
- // the test easier.
- if i >= len(keys) {
- t.Errorf("Missing key #%d %q", i, k)
- } else if kv := keys[i].(*StringValue); kv.Get() != k {
- t.Errorf("Keys[%d] = %q, want %q", i, kv.Get(), k)
+ // These aren't required to be in the same order.
+ seen := false
+ for _, kv := range keys {
+ if kv.String() == k {
+ seen = true
+ break
+ }
+ }
+ if !seen {
+ t.Errorf("Missing key %q", k)
}
- i++
// Check that value lookup is correct.
- vv := mv.Elem(NewValue(k))
- if vi := vv.(*IntValue).Get(); vi != int64(v) {
- t.Errorf("Key %q: have value %d, want %d", vi, v)
+ vv := mv.MapIndex(ValueOf(k))
+ if vi := vv.Int(); vi != int64(v) {
+ t.Errorf("Key %q: have value %d, want %d", k, vi, v)
}
// Copy into new map.
- newmap.SetElem(NewValue(k), NewValue(v))
+ newmap.SetMapIndex(ValueOf(k), ValueOf(v))
}
- vv := mv.Elem(NewValue("not-present"))
- if vv != nil {
+ vv := mv.MapIndex(ValueOf("not-present"))
+ if vv.IsValid() {
t.Errorf("Invalid key: got non-nil value %s", valueToString(vv))
}
}
}
- newmap.SetElem(NewValue("a"), nil)
+ newmap.SetMapIndex(ValueOf("a"), Value{})
v, ok := newm["a"]
if ok {
t.Errorf("newm[\"a\"] = %d after delete", v)
}
- mv = NewValue(&m).(*PtrValue).Elem().(*MapValue)
- mv.Set(nil)
+ mv = ValueOf(&m).Elem()
+ mv.Set(Zero(mv.Type()))
if m != nil {
t.Errorf("mv.Set(nil) failed")
}
func TestChan(t *testing.T) {
for loop := 0; loop < 2; loop++ {
var c chan int
- var cv *ChanValue
+ var cv Value
// check both ways to allocate channels
switch loop {
case 1:
c = make(chan int, 1)
- cv = NewValue(c).(*ChanValue)
+ cv = ValueOf(c)
case 0:
- cv = MakeChan(Typeof(c).(*ChanType), 1)
+ cv = MakeChan(TypeOf(c), 1)
c = cv.Interface().(chan int)
}
// Send
- cv.Send(NewValue(2))
+ cv.Send(ValueOf(2))
if i := <-c; i != 2 {
t.Errorf("reflect Send 2, native recv %d", i)
}
// Recv
c <- 3
- if i := cv.Recv().(*IntValue).Get(); i != 3 {
- t.Errorf("native send 3, reflect Recv %d", i)
+ if i, ok := cv.Recv(); i.Int() != 3 || !ok {
+ t.Errorf("native send 3, reflect Recv %d, %t", i.Int(), ok)
}
// TryRecv fail
- val := cv.TryRecv()
- if val != nil {
- t.Errorf("TryRecv on empty chan: %s", valueToString(val))
+ val, ok := cv.TryRecv()
+ if val.IsValid() || ok {
+ t.Errorf("TryRecv on empty chan: %s, %t", valueToString(val), ok)
}
// TryRecv success
c <- 4
- val = cv.TryRecv()
- if val == nil {
+ val, ok = cv.TryRecv()
+ if !val.IsValid() {
t.Errorf("TryRecv on ready chan got nil")
- } else if i := val.(*IntValue).Get(); i != 4 {
- t.Errorf("native send 4, TryRecv %d", i)
+ } else if i := val.Int(); i != 4 || !ok {
+ t.Errorf("native send 4, TryRecv %d, %t", i, ok)
}
// TrySend fail
c <- 100
- ok := cv.TrySend(NewValue(5))
+ ok = cv.TrySend(ValueOf(5))
i := <-c
if ok {
t.Errorf("TrySend on full chan succeeded: value %d", i)
}
// TrySend success
- ok = cv.TrySend(NewValue(6))
+ ok = cv.TrySend(ValueOf(6))
if !ok {
t.Errorf("TrySend on empty chan failed")
} else {
// Close
c <- 123
cv.Close()
- if cv.Closed() {
- t.Errorf("closed too soon - 1")
+ if i, ok := cv.Recv(); i.Int() != 123 || !ok {
+ t.Errorf("send 123 then close; Recv %d, %t", i.Int(), ok)
}
- if i := cv.Recv().(*IntValue).Get(); i != 123 {
- t.Errorf("send 123 then close; Recv %d", i)
- }
- if cv.Closed() {
- t.Errorf("closed too soon - 2")
- }
- if i := cv.Recv().(*IntValue).Get(); i != 0 {
- t.Errorf("after close Recv %d", i)
- }
- if !cv.Closed() {
- t.Errorf("not closed")
+ if i, ok := cv.Recv(); i.Int() != 0 || ok {
+ t.Errorf("after close Recv %d, %t", i.Int(), ok)
}
}
// check creation of unbuffered channel
var c chan int
- cv := MakeChan(Typeof(c).(*ChanType), 0)
+ cv := MakeChan(TypeOf(c), 0)
c = cv.Interface().(chan int)
- if cv.TrySend(NewValue(7)) {
+ if cv.TrySend(ValueOf(7)) {
t.Errorf("TrySend on sync chan succeeded")
}
- if cv.TryRecv() != nil {
- t.Errorf("TryRecv on sync chan succeeded")
+ if v, ok := cv.TryRecv(); v.IsValid() || ok {
+ t.Errorf("TryRecv on sync chan succeeded: isvalid=%v ok=%v", v.IsValid(), ok)
}
// len/cap
- cv = MakeChan(Typeof(c).(*ChanType), 10)
+ cv = MakeChan(TypeOf(c), 10)
c = cv.Interface().(chan int)
for i := 0; i < 3; i++ {
c <- i
}
func TestFunc(t *testing.T) {
- ret := NewValue(dummy).(*FuncValue).Call([]Value{NewValue(byte(10)), NewValue(20), NewValue(byte(30))})
+ ret := ValueOf(dummy).Call([]Value{ValueOf(byte(10)), ValueOf(20), ValueOf(byte(30))})
if len(ret) != 3 {
t.Fatalf("Call returned %d values, want 3", len(ret))
}
- i := ret[0].(*UintValue).Get()
- j := ret[1].(*IntValue).Get()
- k := ret[2].(*UintValue).Get()
+ i := byte(ret[0].Uint())
+ j := int(ret[1].Int())
+ k := byte(ret[2].Uint())
if i != 10 || j != 20 || k != 30 {
t.Errorf("Call returned %d, %d, %d; want 10, 20, 30", i, j, k)
}
x, y int
}
-func (p Point) Dist(scale int) int { return p.x*p.x*scale + p.y*p.y*scale }
+// This will be index 0.
+func (p Point) AnotherMethod(scale int) int {
+ return -1
+}
+
+// This will be index 1.
+func (p Point) Dist(scale int) int {
+ // println("Point.Dist", p.x, p.y, scale)
+ return p.x*p.x*scale + p.y*p.y*scale
+}
func TestMethod(t *testing.T) {
// Non-curried method of type.
p := Point{3, 4}
- i := Typeof(p).Method(0).Func.Call([]Value{NewValue(p), NewValue(10)})[0].(*IntValue).Get()
+ i := TypeOf(p).Method(1).Func.Call([]Value{ValueOf(p), ValueOf(10)})[0].Int()
if i != 250 {
t.Errorf("Type Method returned %d; want 250", i)
}
- i = Typeof(&p).Method(0).Func.Call([]Value{NewValue(&p), NewValue(10)})[0].(*IntValue).Get()
+ m, ok := TypeOf(p).MethodByName("Dist")
+ if !ok {
+ t.Fatalf("method by name failed")
+ }
+ m.Func.Call([]Value{ValueOf(p), ValueOf(10)})[0].Int()
+ if i != 250 {
+ t.Errorf("Type MethodByName returned %d; want 250", i)
+ }
+
+ i = TypeOf(&p).Method(1).Func.Call([]Value{ValueOf(&p), ValueOf(10)})[0].Int()
if i != 250 {
t.Errorf("Pointer Type Method returned %d; want 250", i)
}
+ m, ok = TypeOf(&p).MethodByName("Dist")
+ if !ok {
+ t.Fatalf("ptr method by name failed")
+ }
+ i = m.Func.Call([]Value{ValueOf(&p), ValueOf(10)})[0].Int()
+ if i != 250 {
+ t.Errorf("Pointer Type MethodByName returned %d; want 250", i)
+ }
+
// Curried method of value.
- i = NewValue(p).Method(0).Call([]Value{NewValue(10)})[0].(*IntValue).Get()
+ tfunc := TypeOf(func(int) int(nil))
+ v := ValueOf(p).Method(1)
+ if tt := v.Type(); tt != tfunc {
+ t.Errorf("Value Method Type is %s; want %s", tt, tfunc)
+ }
+ i = v.Call([]Value{ValueOf(10)})[0].Int()
if i != 250 {
t.Errorf("Value Method returned %d; want 250", i)
}
+ v = ValueOf(p).MethodByName("Dist")
+ if tt := v.Type(); tt != tfunc {
+ t.Errorf("Value MethodByName Type is %s; want %s", tt, tfunc)
+ }
+ i = v.Call([]Value{ValueOf(10)})[0].Int()
+ if i != 250 {
+ t.Errorf("Value MethodByName returned %d; want 250", i)
+ }
+
+ // Curried method of pointer.
+ v = ValueOf(&p).Method(1)
+ if tt := v.Type(); tt != tfunc {
+ t.Errorf("Pointer Value Method Type is %s; want %s", tt, tfunc)
+ }
+ i = v.Call([]Value{ValueOf(10)})[0].Int()
+ if i != 250 {
+ t.Errorf("Pointer Value Method returned %d; want 250", i)
+ }
+ v = ValueOf(&p).MethodByName("Dist")
+ if tt := v.Type(); tt != tfunc {
+ t.Errorf("Pointer Value MethodByName Type is %s; want %s", tt, tfunc)
+ }
+ i = v.Call([]Value{ValueOf(10)})[0].Int()
+ if i != 250 {
+ t.Errorf("Pointer Value MethodByName returned %d; want 250", i)
+ }
// Curried method of interface value.
// Have to wrap interface value in a struct to get at it.
- // Passing it to NewValue directly would
+ // Passing it to ValueOf directly would
// access the underlying Point, not the interface.
var s = struct {
- x interface {
+ X interface {
Dist(int) int
}
}{p}
- pv := NewValue(s).(*StructValue).Field(0)
- i = pv.Method(0).Call([]Value{NewValue(10)})[0].(*IntValue).Get()
+ pv := ValueOf(s).Field(0)
+ v = pv.Method(0)
+ if tt := v.Type(); tt != tfunc {
+ t.Errorf("Interface Method Type is %s; want %s", tt, tfunc)
+ }
+ i = v.Call([]Value{ValueOf(10)})[0].Int()
if i != 250 {
t.Errorf("Interface Method returned %d; want 250", i)
}
+ v = pv.MethodByName("Dist")
+ if tt := v.Type(); tt != tfunc {
+ t.Errorf("Interface MethodByName Type is %s; want %s", tt, tfunc)
+ }
+ i = v.Call([]Value{ValueOf(10)})[0].Int()
+ if i != 250 {
+ t.Errorf("Interface MethodByName returned %d; want 250", i)
+ }
}
func TestInterfaceSet(t *testing.T) {
Dist(int) int
}
}
- sv := NewValue(&s).(*PtrValue).Elem().(*StructValue)
- sv.Field(0).(*InterfaceValue).Set(NewValue(p))
+ sv := ValueOf(&s).Elem()
+ sv.Field(0).Set(ValueOf(p))
if q := s.I.(*Point); q != p {
t.Errorf("i: have %p want %p", q, p)
}
- pv := sv.Field(1).(*InterfaceValue)
- pv.Set(NewValue(p))
+ pv := sv.Field(1)
+ pv.Set(ValueOf(p))
if q := s.P.(*Point); q != p {
t.Errorf("i: have %p want %p", q, p)
}
- i := pv.Method(0).Call([]Value{NewValue(10)})[0].(*IntValue).Get()
+ i := pv.Method(0).Call([]Value{ValueOf(10)})[0].Int()
if i != 250 {
t.Errorf("Interface Method returned %d; want 250", i)
}
var field StructField
var ok bool
var t1 T1
- type1 := Typeof(t1).(*StructType)
+ type1 := TypeOf(t1)
if field, ok = type1.FieldByName("int"); !ok {
t.Error("no field 'int'")
}
}
type S0 struct {
- a, b, c int
+ A, B, C int
D1
D2
}
type S1 struct {
- b int
+ B int
S0
}
type S2 struct {
- a int
+ A int
*S1
}
type S3 struct {
S1x
S2
- d, e int
+ D, E int
*S1y
}
type S4 struct {
*S4
- a int
+ A int
}
var fieldTests = []FTest{
{struct{}{}, "", nil, 0},
- {struct{}{}, "foo", nil, 0},
- {S0{a: 'a'}, "a", []int{0}, 'a'},
- {S0{}, "d", nil, 0},
- {S1{S0: S0{a: 'a'}}, "a", []int{1, 0}, 'a'},
- {S1{b: 'b'}, "b", []int{0}, 'b'},
+ {struct{}{}, "Foo", nil, 0},
+ {S0{A: 'a'}, "A", []int{0}, 'a'},
+ {S0{}, "D", nil, 0},
+ {S1{S0: S0{A: 'a'}}, "A", []int{1, 0}, 'a'},
+ {S1{B: 'b'}, "B", []int{0}, 'b'},
{S1{}, "S0", []int{1}, 0},
- {S1{S0: S0{c: 'c'}}, "c", []int{1, 2}, 'c'},
- {S2{a: 'a'}, "a", []int{0}, 'a'},
+ {S1{S0: S0{C: 'c'}}, "C", []int{1, 2}, 'c'},
+ {S2{A: 'a'}, "A", []int{0}, 'a'},
{S2{}, "S1", []int{1}, 0},
- {S2{S1: &S1{b: 'b'}}, "b", []int{1, 0}, 'b'},
- {S2{S1: &S1{S0: S0{c: 'c'}}}, "c", []int{1, 1, 2}, 'c'},
- {S2{}, "d", nil, 0},
+ {S2{S1: &S1{B: 'b'}}, "B", []int{1, 0}, 'b'},
+ {S2{S1: &S1{S0: S0{C: 'c'}}}, "C", []int{1, 1, 2}, 'c'},
+ {S2{}, "D", nil, 0},
{S3{}, "S1", nil, 0},
- {S3{S2: S2{a: 'a'}}, "a", []int{1, 0}, 'a'},
- {S3{}, "b", nil, 0},
- {S3{d: 'd'}, "d", []int{2}, 0},
- {S3{e: 'e'}, "e", []int{3}, 'e'},
- {S4{a: 'a'}, "a", []int{1}, 'a'},
- {S4{}, "b", nil, 0},
+ {S3{S2: S2{A: 'a'}}, "A", []int{1, 0}, 'a'},
+ {S3{}, "B", nil, 0},
+ {S3{D: 'd'}, "D", []int{2}, 0},
+ {S3{E: 'e'}, "E", []int{3}, 'e'},
+ {S4{A: 'a'}, "A", []int{1}, 'a'},
+ {S4{}, "B", nil, 0},
}
func TestFieldByIndex(t *testing.T) {
for _, test := range fieldTests {
- s := Typeof(test.s).(*StructType)
+ s := TypeOf(test.s)
f := s.FieldByIndex(test.index)
if f.Name != "" {
if test.index != nil {
}
if test.value != 0 {
- v := NewValue(test.s).(*StructValue).FieldByIndex(test.index)
- if v != nil {
+ v := ValueOf(test.s).FieldByIndex(test.index)
+ if v.IsValid() {
if x, ok := v.Interface().(int); ok {
if x != test.value {
t.Errorf("%s%v is %d; want %d", s.Name(), test.index, x, test.value)
func TestFieldByName(t *testing.T) {
for _, test := range fieldTests {
- s := Typeof(test.s).(*StructType)
+ s := TypeOf(test.s)
f, found := s.FieldByName(test.name)
if found {
if test.index != nil {
}
if test.value != 0 {
- v := NewValue(test.s).(*StructValue).FieldByName(test.name)
- if v != nil {
+ v := ValueOf(test.s).FieldByName(test.name)
+ if v.IsValid() {
if x, ok := v.Interface().(int); ok {
if x != test.value {
t.Errorf("%s.%s is %d; want %d", s.Name(), test.name, x, test.value)
}
func TestImportPath(t *testing.T) {
- if path := Typeof(vector.Vector{}).PkgPath(); path != "libgo_container.vector" {
- t.Errorf("Typeof(vector.Vector{}).PkgPath() = %q, want \"libgo_container.vector\"", path)
+ if path := TypeOf(&base64.Encoding{}).Elem().PkgPath(); path != "libgo_encoding.base64" {
+ t.Errorf(`TypeOf(&base64.Encoding{}).Elem().PkgPath() = %q, want "libgo_encoding.base64"`, path)
}
}
-func TestDotDotDot(t *testing.T) {
- // Test example from FuncType.DotDotDot documentation.
- var f func(x int, y ...float)
- typ := Typeof(f).(*FuncType)
- if typ.NumIn() == 2 && typ.In(0) == Typeof(int(0)) {
- sl, ok := typ.In(1).(*SliceType)
- if ok {
- if sl.Elem() == Typeof(float(0)) {
+func TestVariadicType(t *testing.T) {
+ // Test example from Type documentation.
+ var f func(x int, y ...float64)
+ typ := TypeOf(f)
+ if typ.NumIn() == 2 && typ.In(0) == TypeOf(int(0)) {
+ sl := typ.In(1)
+ if sl.Kind() == Slice {
+ if sl.Elem() == TypeOf(0.0) {
// ok
return
}
}
// Failed
- t.Errorf("want NumIn() = 2, In(0) = int, In(1) = []float")
+ t.Errorf("want NumIn() = 2, In(0) = int, In(1) = []float64")
s := fmt.Sprintf("have NumIn() = %d", typ.NumIn())
for i := 0; i < typ.NumIn(); i++ {
s += fmt.Sprintf(", In(%d) = %s", i, typ.In(i))
func (*outer) m() {}
func TestNestedMethods(t *testing.T) {
- typ := Typeof((*outer)(nil))
- if typ.NumMethod() != 1 || typ.Method(0).Func.Get() != NewValue((*outer).m).(*FuncValue).Get() {
+ typ := TypeOf((*outer)(nil))
+ if typ.NumMethod() != 1 || typ.Method(0).Func.Pointer() != ValueOf((*outer).m).Pointer() {
t.Errorf("Wrong method table for outer: (m=%p)", (*outer).m)
for i := 0; i < typ.NumMethod(); i++ {
m := typ.Method(i)
- t.Errorf("\t%d: %s %#x\n", i, m.Name, m.Func.Get())
+ t.Errorf("\t%d: %s %#x\n", i, m.Name, m.Func.Pointer())
}
}
}
-type innerInt struct {
- x int
+type InnerInt struct {
+ X int
}
-type outerInt struct {
- y int
- innerInt
+type OuterInt struct {
+ Y int
+ InnerInt
}
-func (i *innerInt) m() int {
- return i.x
+func (i *InnerInt) M() int {
+ return i.X
}
func TestEmbeddedMethods(t *testing.T) {
- typ := Typeof((*outerInt)(nil))
- if typ.NumMethod() != 1 || typ.Method(0).Func.Get() != NewValue((*outerInt).m).(*FuncValue).Get() {
- t.Errorf("Wrong method table for outerInt: (m=%p)", (*outerInt).m)
+ typ := TypeOf((*OuterInt)(nil))
+ if typ.NumMethod() != 1 || typ.Method(0).Func.Pointer() != ValueOf((*OuterInt).M).Pointer() {
+ t.Errorf("Wrong method table for OuterInt: (m=%p)", (*OuterInt).M)
for i := 0; i < typ.NumMethod(); i++ {
m := typ.Method(i)
- t.Errorf("\t%d: %s %#x\n", i, m.Name, m.Func.Get())
+ t.Errorf("\t%d: %s %#x\n", i, m.Name, m.Func.Pointer())
}
}
- i := &innerInt{3}
- if v := NewValue(i).Method(0).Call(nil)[0].(*IntValue).Get(); v != 3 {
- t.Errorf("i.m() = %d, want 3", v)
+ i := &InnerInt{3}
+ if v := ValueOf(i).Method(0).Call(nil)[0].Int(); v != 3 {
+ t.Errorf("i.M() = %d, want 3", v)
}
- o := &outerInt{1, innerInt{2}}
- if v := NewValue(o).Method(0).Call(nil)[0].(*IntValue).Get(); v != 2 {
- t.Errorf("i.m() = %d, want 2", v)
+ o := &OuterInt{1, InnerInt{2}}
+ if v := ValueOf(o).Method(0).Call(nil)[0].Int(); v != 2 {
+ t.Errorf("i.M() = %d, want 2", v)
}
- f := (*outerInt).m
+ f := (*OuterInt).M
if v := f(o); v != 2 {
t.Errorf("f(o) = %d, want 2", v)
}
}
+
+func TestPtrTo(t *testing.T) {
+ var i int
+
+ typ := TypeOf(i)
+ for i = 0; i < 100; i++ {
+ typ = PtrTo(typ)
+ }
+ for i = 0; i < 100; i++ {
+ typ = typ.Elem()
+ }
+ if typ != TypeOf(i) {
+ t.Errorf("after 100 PtrTo and Elem, have %s, want %s", typ, TypeOf(i))
+ }
+}
+
+func TestAddr(t *testing.T) {
+ var p struct {
+ X, Y int
+ }
+
+ v := ValueOf(&p)
+ v = v.Elem()
+ v = v.Addr()
+ v = v.Elem()
+ v = v.Field(0)
+ v.SetInt(2)
+ if p.X != 2 {
+ t.Errorf("Addr.Elem.Set failed to set value")
+ }
+
+ // Again but take address of the ValueOf value.
+ // Exercises generation of PtrTypes not present in the binary.
+ q := &p
+ v = ValueOf(&q).Elem()
+ v = v.Addr()
+ v = v.Elem()
+ v = v.Elem()
+ v = v.Addr()
+ v = v.Elem()
+ v = v.Field(0)
+ v.SetInt(3)
+ if p.X != 3 {
+ t.Errorf("Addr.Elem.Set failed to set value")
+ }
+
+ // Starting without pointer we should get changed value
+ // in interface.
+ qq := p
+ v = ValueOf(&qq).Elem()
+ v0 := v
+ v = v.Addr()
+ v = v.Elem()
+ v = v.Field(0)
+ v.SetInt(4)
+ if p.X != 3 { // should be unchanged from last time
+ t.Errorf("somehow value Set changed original p")
+ }
+ p = v0.Interface().(struct {
+ X, Y int
+ })
+ if p.X != 4 {
+ t.Errorf("Addr.Elem.Set valued to set value in top value")
+ }
+}
+
+/* gccgo does do allocations here.
+
+func noAlloc(t *testing.T, n int, f func(int)) {
+ // once to prime everything
+ f(-1)
+ runtime.MemStats.Mallocs = 0
+
+ for j := 0; j < n; j++ {
+ f(j)
+ }
+ // A few allocs may happen in the testing package when GOMAXPROCS > 1, so don't
+ // require zero mallocs.
+ if runtime.MemStats.Mallocs > 5 {
+ t.Fatalf("%d mallocs after %d iterations", runtime.MemStats.Mallocs, n)
+ }
+}
+
+func TestAllocations(t *testing.T) {
+ noAlloc(t, 100, func(j int) {
+ var i interface{}
+ var v Value
+ i = 42 + j
+ v = ValueOf(i)
+ if int(v.Int()) != 42+j {
+ panic("wrong int")
+ }
+ })
+}
+
+*/
+
+func TestSmallNegativeInt(t *testing.T) {
+ i := int16(-1)
+ v := ValueOf(i)
+ if v.Int() != -1 {
+ t.Errorf("int16(-1).Int() returned %v", v.Int())
+ }
+}
+
+func TestSlice(t *testing.T) {
+ xs := []int{1, 2, 3, 4, 5, 6, 7, 8}
+ v := ValueOf(xs).Slice(3, 5).Interface().([]int)
+ if len(v) != 2 || v[0] != 4 || v[1] != 5 {
+ t.Errorf("xs.Slice(3, 5) = %v", v)
+ }
+
+ xa := [7]int{10, 20, 30, 40, 50, 60, 70}
+ v = ValueOf(&xa).Elem().Slice(2, 5).Interface().([]int)
+ if len(v) != 3 || v[0] != 30 || v[1] != 40 || v[2] != 50 {
+ t.Errorf("xa.Slice(2, 5) = %v", v)
+ }
+}
+
+func TestVariadic(t *testing.T) {
+ var b bytes.Buffer
+ V := ValueOf
+
+ b.Reset()
+ V(fmt.Fprintf).Call([]Value{V(&b), V("%s, %d world"), V("hello"), V(42)})
+ if b.String() != "hello, 42 world" {
+ t.Errorf("after Fprintf Call: %q != %q", b.String(), "hello 42 world")
+ }
+
+ b.Reset()
+ V(fmt.Fprintf).CallSlice([]Value{V(&b), V("%s, %d world"), V([]interface{}{"hello", 42})})
+ if b.String() != "hello, 42 world" {
+ t.Errorf("after Fprintf CallSlice: %q != %q", b.String(), "hello 42 world")
+ }
+}
+
+var tagGetTests = []struct {
+ Tag StructTag
+ Key string
+ Value string
+}{
+ {`protobuf:"PB(1,2)"`, `protobuf`, `PB(1,2)`},
+ {`protobuf:"PB(1,2)"`, `foo`, ``},
+ {`protobuf:"PB(1,2)"`, `rotobuf`, ``},
+ {`protobuf:"PB(1,2)" json:"name"`, `json`, `name`},
+ {`protobuf:"PB(1,2)" json:"name"`, `protobuf`, `PB(1,2)`},
+}
+
+func TestTagGet(t *testing.T) {
+ for _, tt := range tagGetTests {
+ if v := tt.Tag.Get(tt.Key); v != tt.Value {
+ t.Errorf("StructTag(%#q).Get(%#q) = %#q, want %#q", tt.Tag, tt.Key, v, tt.Value)
+ }
+ }
+}
+
+func TestBytes(t *testing.T) {
+ type B []byte
+ x := B{1, 2, 3, 4}
+ y := ValueOf(x).Bytes()
+ if !bytes.Equal(x, y) {
+ t.Fatalf("ValueOf(%v).Bytes() = %v", x, y)
+ }
+ if &x[0] != &y[0] {
+ t.Errorf("ValueOf(%p).Bytes() = %p", &x[0], &y[0])
+ }
+}
+
+func TestSetBytes(t *testing.T) {
+ type B []byte
+ var x B
+ y := []byte{1, 2, 3, 4}
+ ValueOf(&x).Elem().SetBytes(y)
+ if !bytes.Equal(x, y) {
+ t.Fatalf("ValueOf(%v).Bytes() = %v", x, y)
+ }
+ if &x[0] != &y[0] {
+ t.Errorf("ValueOf(%p).Bytes() = %p", &x[0], &y[0])
+ }
+}
+
+type Private struct {
+ x int
+ y **int
+}
+
+func (p *Private) m() {
+}
+
+type Public struct {
+ X int
+ Y **int
+}
+
+func (p *Public) M() {
+}
+
+func TestUnexported(t *testing.T) {
+ var pub Public
+ v := ValueOf(&pub)
+ isValid(v.Elem().Field(0))
+ isValid(v.Elem().Field(1))
+ isValid(v.Elem().FieldByName("X"))
+ isValid(v.Elem().FieldByName("Y"))
+ isValid(v.Type().Method(0).Func)
+ isNonNil(v.Elem().Field(0).Interface())
+ isNonNil(v.Elem().Field(1).Interface())
+ isNonNil(v.Elem().FieldByName("X").Interface())
+ isNonNil(v.Elem().FieldByName("Y").Interface())
+ isNonNil(v.Type().Method(0).Func.Interface())
+
+ var priv Private
+ v = ValueOf(&priv)
+ isValid(v.Elem().Field(0))
+ isValid(v.Elem().Field(1))
+ isValid(v.Elem().FieldByName("x"))
+ isValid(v.Elem().FieldByName("y"))
+ isValid(v.Type().Method(0).Func)
+ shouldPanic(func() { v.Elem().Field(0).Interface() })
+ shouldPanic(func() { v.Elem().Field(1).Interface() })
+ shouldPanic(func() { v.Elem().FieldByName("x").Interface() })
+ shouldPanic(func() { v.Elem().FieldByName("y").Interface() })
+ shouldPanic(func() { v.Type().Method(0).Func.Interface() })
+}
+
+func shouldPanic(f func()) {
+ defer func() {
+ if recover() == nil {
+ panic("did not panic")
+ }
+ }()
+ f()
+}
+
+func isNonNil(x interface{}) {
+ if x == nil {
+ panic("nil interface")
+ }
+}
+
+func isValid(v Value) {
+ if !v.IsValid() {
+ panic("zero Value")
+ }
+}
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