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path: root/src/pkg/reflect/all_test.go
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Diffstat (limited to 'src/pkg/reflect/all_test.go')
-rw-r--r--src/pkg/reflect/all_test.go471
1 files changed, 275 insertions, 196 deletions
diff --git a/src/pkg/reflect/all_test.go b/src/pkg/reflect/all_test.go
index bc9157672..5bf65333c 100644
--- a/src/pkg/reflect/all_test.go
+++ b/src/pkg/reflect/all_test.go
@@ -5,11 +5,13 @@
package reflect_test
import (
+ "bytes"
"container/vector"
"fmt"
"io"
"os"
. "reflect"
+ "runtime"
"testing"
"unsafe"
)
@@ -35,7 +37,7 @@ func assert(t *testing.T, s, want string) {
}
}
-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"},
@@ -150,50 +152,50 @@ var typeTests = []pair{
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}",
},
}
@@ -207,13 +209,13 @@ func testType(t *testing.T, i int, typ Type, want string) {
func TestTypes(t *testing.T) {
for i, tt := range typeTests {
- testType(t, i, NewValue(tt.i).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)
+ v := ValueOf(tt.i).Elem()
switch v.Kind() {
case Int:
v.SetInt(132)
@@ -257,40 +259,40 @@ func TestSet(t *testing.T) {
func TestSetValue(t *testing.T) {
for i, tt := range valueTests {
- v := NewValue(tt.i)
+ v := ValueOf(tt.i).Elem()
switch v.Kind() {
case Int:
- v.Set(NewValue(int(132)))
+ v.Set(ValueOf(int(132)))
case Int8:
- v.Set(NewValue(int8(8)))
+ v.Set(ValueOf(int8(8)))
case Int16:
- v.Set(NewValue(int16(16)))
+ v.Set(ValueOf(int16(16)))
case Int32:
- v.Set(NewValue(int32(32)))
+ v.Set(ValueOf(int32(32)))
case Int64:
- v.Set(NewValue(int64(64)))
+ v.Set(ValueOf(int64(64)))
case Uint:
- v.Set(NewValue(uint(132)))
+ v.Set(ValueOf(uint(132)))
case Uint8:
- v.Set(NewValue(uint8(8)))
+ v.Set(ValueOf(uint8(8)))
case Uint16:
- v.Set(NewValue(uint16(16)))
+ v.Set(ValueOf(uint16(16)))
case Uint32:
- v.Set(NewValue(uint32(32)))
+ v.Set(ValueOf(uint32(32)))
case Uint64:
- v.Set(NewValue(uint64(64)))
+ v.Set(ValueOf(uint64(64)))
case Float32:
- v.Set(NewValue(float32(256.25)))
+ v.Set(ValueOf(float32(256.25)))
case Float64:
- v.Set(NewValue(512.125))
+ v.Set(ValueOf(512.125))
case Complex64:
- v.Set(NewValue(complex64(532.125 + 10i)))
+ v.Set(ValueOf(complex64(532.125 + 10i)))
case Complex128:
- v.Set(NewValue(complex128(564.25 + 1i)))
+ v.Set(ValueOf(complex128(564.25 + 1i)))
case String:
- v.Set(NewValue("stringy cheese"))
+ v.Set(ValueOf("stringy cheese"))
case Bool:
- v.Set(NewValue(true))
+ v.Set(ValueOf(true))
}
s := valueToString(v)
if s != tt.s {
@@ -316,7 +318,7 @@ var valueToStringTests = []pair{
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)
}
@@ -324,7 +326,7 @@ func TestValueToString(t *testing.T) {
}
func TestArrayElemSet(t *testing.T) {
- v := NewValue([10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10})
+ 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}"
@@ -332,7 +334,7 @@ func TestArrayElemSet(t *testing.T) {
t.Errorf("[10]int: have %#q want %#q", s, want)
}
- v = NewValue([]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10})
+ 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}"
@@ -344,15 +346,15 @@ func TestArrayElemSet(t *testing.T) {
func TestPtrPointTo(t *testing.T) {
var ip *int32
var i int32 = 1234
- vip := NewValue(&ip)
- vi := NewValue(i)
+ 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)
+ vp := ValueOf(&ip).Elem()
vp.Set(Zero(vp.Type()))
if ip != nil {
t.Errorf("got non-nil (%p), want nil", ip)
@@ -362,7 +364,7 @@ func TestPtrPointTo(t *testing.T) {
func TestPtrSetNil(t *testing.T) {
var i int32 = 1234
ip := &i
- vip := NewValue(&ip)
+ vip := ValueOf(&ip)
vip.Elem().Set(Zero(vip.Elem().Type()))
if ip != nil {
t.Errorf("got non-nil (%d), want nil", *ip)
@@ -371,7 +373,7 @@ func TestPtrSetNil(t *testing.T) {
func TestMapSetNil(t *testing.T) {
m := make(map[string]int)
- vm := NewValue(&m)
+ vm := ValueOf(&m)
vm.Elem().Set(Zero(vm.Elem().Type()))
if m != nil {
t.Errorf("got non-nil (%p), want nil", m)
@@ -380,10 +382,10 @@ func TestMapSetNil(t *testing.T) {
func TestAll(t *testing.T) {
- testType(t, 1, Typeof((int8)(0)), "int8")
- testType(t, 2, Typeof((*int8)(nil)).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))
@@ -405,22 +407,22 @@ func TestAll(t *testing.T) {
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.Elem(), "int32")
- typ = Typeof((map[string]*int32)(nil))
+ typ = TypeOf((map[string]*int32)(nil))
testType(t, 9, typ, "map[string] *int32")
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.Elem(), "string")
// make sure tag strings are not part of element type
- typ = Typeof(struct {
+ typ = TypeOf(struct {
d []uint32 "TAG"
}{}).Field(0).Type
testType(t, 14, typ, "[]uint32")
@@ -428,23 +430,23 @@ func TestAll(t *testing.T) {
func TestInterfaceGet(t *testing.T) {
var inter struct {
- e interface{}
+ E interface{}
}
- inter.e = 123.456
- v1 := NewValue(&inter)
+ inter.E = 123.456
+ v1 := ValueOf(&inter)
v2 := v1.Elem().Field(0)
assert(t, v2.Type().String(), "interface { }")
i2 := v2.Interface()
- v3 := NewValue(i2)
+ 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)
+ inter.E = 123.456
+ v1 := ValueOf(&inter)
v2 := v1.Elem().Field(0)
assert(t, v2.Type().String(), "interface { }")
v3 := v2.Elem()
@@ -452,13 +454,14 @@ func TestInterfaceValue(t *testing.T) {
i3 := v2.Interface()
if _, ok := i3.(float64); !ok {
- t.Error("v2.Interface() did not return float64, got ", Typeof(i3))
+ 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()")
@@ -471,6 +474,18 @@ var appendTests = []struct {
{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)
@@ -478,15 +493,15 @@ func TestAppend(t *testing.T) {
// Convert extra from []int to []Value.
e0 := make([]Value, len(test.extra))
for j, e := range test.extra {
- e0[j] = NewValue(e)
+ e0[j] = ValueOf(e)
}
// Convert extra from []int to *SliceValue.
- e1 := NewValue(test.extra)
+ e1 := ValueOf(test.extra)
// Test Append.
- a0 := NewValue(test.orig)
+ a0 := ValueOf(test.orig)
have0 := Append(a0, e0...).Interface().([]int)
- if !DeepEqual(have0, want) {
- t.Errorf("Append #%d: have %v, want %v", i, have0, want)
+ 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 {
@@ -496,9 +511,9 @@ func TestAppend(t *testing.T) {
t.Errorf("Append #%d extraLen: have %v, want %v", i, len(test.extra), extraLen)
}
// Test AppendSlice.
- a1 := NewValue(test.orig)
+ a1 := ValueOf(test.orig)
have1 := AppendSlice(a1, e1).Interface().([]int)
- if !DeepEqual(have1, want) {
+ 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.
@@ -520,8 +535,10 @@ func TestCopy(t *testing.T) {
t.Fatalf("b != c before test")
}
}
- aa := NewValue(a)
- ab := NewValue(b)
+ a1 := a
+ b1 := b
+ aa := ValueOf(&a1).Elem()
+ ab := ValueOf(&b1).Elem()
for tocopy := 1; tocopy <= 7; tocopy++ {
aa.SetLen(tocopy)
Copy(ab, aa)
@@ -548,14 +565,41 @@ func TestCopy(t *testing.T) {
}
}
+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] {
+ if i < len(a) {
+ t.Errorf("(ii) a[%d]=%d, b[%d]=%d, c[%d]=%d",
+ i, a[i], i, b[i], i, c[i])
+ } else {
+ t.Errorf("(iii) 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)
}
}
@@ -565,10 +609,10 @@ type big struct {
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)
}
}
@@ -632,15 +676,15 @@ func TestDeepEqual(t *testing.T) {
}
}
-func TestTypeof(t *testing.T) {
+func TestTypeOf(t *testing.T) {
for _, test := range deepEqualTests {
- v := NewValue(test.a)
+ 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())
}
}
}
@@ -690,7 +734,7 @@ func TestDeepEqualComplexStructInequality(t *testing.T) {
func check2ndField(x interface{}, offs uintptr, t *testing.T) {
- s := NewValue(x)
+ s := ValueOf(x)
f := s.Type().Field(1)
if f.Offset != offs {
t.Error("mismatched offsets in structure alignment:", f.Offset, offs)
@@ -723,16 +767,16 @@ func TestAlignment(t *testing.T) {
}
func Nil(a interface{}, t *testing.T) {
- n := NewValue(a).Field(0)
+ 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).Field(0)
+ 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())
}
}
@@ -748,7 +792,7 @@ func TestIsNil(t *testing.T) {
struct{ x []string }{},
}
for _, ts := range doNil {
- ty := Typeof(ts).Field(0).Type
+ ty := TypeOf(ts).Field(0).Type
v := Zero(ty)
v.IsNil() // panics if not okay to call
}
@@ -803,50 +847,22 @@ func TestInterfaceExtraction(t *testing.T) {
}
s.w = os.Stdout
- v := Indirect(NewValue(&s)).Field(0).Interface()
+ v := Indirect(ValueOf(&s)).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.SetString("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.SetInt(234)
- if i.(int) != 123 {
- t.Errorf("Set(234) changed i to %d", i.(int))
- }
-}
-
func TestNilPtrValueSub(t *testing.T) {
var pi *int
- if pv := NewValue(pi); pv.Elem().IsValid() {
- t.Error("NewValue((*int)(nil)).Elem().IsValid()")
+ 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)
+ mv := ValueOf(m)
if n := mv.Len(); n != len(m) {
t.Errorf("Len = %d, want %d", n, len(m))
}
@@ -866,15 +882,15 @@ func TestMap(t *testing.T) {
i++
// Check that value lookup is correct.
- vv := mv.MapIndex(NewValue(k))
+ 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.SetMapIndex(NewValue(k), NewValue(v))
+ newmap.SetMapIndex(ValueOf(k), ValueOf(v))
}
- vv := mv.MapIndex(NewValue("not-present"))
+ vv := mv.MapIndex(ValueOf("not-present"))
if vv.IsValid() {
t.Errorf("Invalid key: got non-nil value %s", valueToString(vv))
}
@@ -891,13 +907,13 @@ func TestMap(t *testing.T) {
}
}
- newmap.SetMapIndex(NewValue("a"), Value{})
+ newmap.SetMapIndex(ValueOf("a"), Value{})
v, ok := newm["a"]
if ok {
t.Errorf("newm[\"a\"] = %d after delete", v)
}
- mv = NewValue(&m).Elem()
+ mv = ValueOf(&m).Elem()
mv.Set(Zero(mv.Type()))
if m != nil {
t.Errorf("mv.Set(nil) failed")
@@ -913,14 +929,14 @@ func TestChan(t *testing.T) {
switch loop {
case 1:
c = make(chan int, 1)
- cv = NewValue(c)
+ cv = ValueOf(c)
case 0:
- cv = MakeChan(Typeof(c), 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)
}
@@ -948,14 +964,14 @@ func TestChan(t *testing.T) {
// 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 {
@@ -977,17 +993,17 @@ func TestChan(t *testing.T) {
// check creation of unbuffered channel
var c chan int
- cv := MakeChan(Typeof(c), 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 v, ok := cv.TryRecv(); v.IsValid() || ok {
- t.Errorf("TryRecv on sync chan succeeded")
+ t.Errorf("TryRecv on sync chan succeeded: isvalid=%v ok=%v", v.IsValid(), ok)
}
// len/cap
- cv = MakeChan(Typeof(c), 10)
+ cv = MakeChan(TypeOf(c), 10)
c = cv.Interface().(chan int)
for i := 0; i < 3; i++ {
c <- i
@@ -1005,7 +1021,7 @@ func dummy(b byte, c int, d byte) (i byte, j int, k byte) {
}
func TestFunc(t *testing.T) {
- ret := NewValue(dummy).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))
}
@@ -1022,50 +1038,47 @@ type Point struct {
x, y int
}
-func (p Point) Dist(scale int) int { return p.x*p.x*scale + p.y*p.y*scale }
+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].Int()
+ i := TypeOf(p).Method(0).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].Int()
+ i = TypeOf(&p).Method(0).Func.Call([]Value{ValueOf(&p), ValueOf(10)})[0].Int()
if i != 250 {
t.Errorf("Pointer Type Method returned %d; want 250", i)
}
// Curried method of value.
- i = NewValue(p).Method(0).Call([]Value{NewValue(10)})[0].Int()
+ i = ValueOf(p).Method(0).Call([]Value{ValueOf(10)})[0].Int()
if i != 250 {
t.Errorf("Value Method returned %d; want 250", i)
}
// Curried method of pointer.
- i = NewValue(&p).Method(0).Call([]Value{NewValue(10)})[0].Int()
- if i != 250 {
- t.Errorf("Value Method returned %d; want 250", i)
- }
-
- // Curried method of pointer to value.
- i = NewValue(p).Addr().Method(0).Call([]Value{NewValue(10)})[0].Int()
+ i = ValueOf(&p).Method(0).Call([]Value{ValueOf(10)})[0].Int()
if i != 250 {
t.Errorf("Value Method 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).Field(0)
- i = pv.Method(0).Call([]Value{NewValue(10)})[0].Int()
+ pv := ValueOf(s).Field(0)
+ i = pv.Method(0).Call([]Value{ValueOf(10)})[0].Int()
if i != 250 {
t.Errorf("Interface Method returned %d; want 250", i)
}
@@ -1080,19 +1093,19 @@ func TestInterfaceSet(t *testing.T) {
Dist(int) int
}
}
- sv := NewValue(&s).Elem()
- sv.Field(0).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)
- pv.Set(NewValue(p))
+ 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].Int()
+ i := pv.Method(0).Call([]Value{ValueOf(10)})[0].Int()
if i != 250 {
t.Errorf("Interface Method returned %d; want 250", i)
}
@@ -1107,7 +1120,7 @@ func TestAnonymousFields(t *testing.T) {
var field StructField
var ok bool
var t1 T1
- type1 := Typeof(t1)
+ type1 := TypeOf(t1)
if field, ok = type1.FieldByName("int"); !ok {
t.Error("no field 'int'")
}
@@ -1191,7 +1204,7 @@ var fieldTests = []FTest{
func TestFieldByIndex(t *testing.T) {
for _, test := range fieldTests {
- s := Typeof(test.s)
+ s := TypeOf(test.s)
f := s.FieldByIndex(test.index)
if f.Name != "" {
if test.index != nil {
@@ -1206,7 +1219,7 @@ func TestFieldByIndex(t *testing.T) {
}
if test.value != 0 {
- v := NewValue(test.s).FieldByIndex(test.index)
+ v := ValueOf(test.s).FieldByIndex(test.index)
if v.IsValid() {
if x, ok := v.Interface().(int); ok {
if x != test.value {
@@ -1224,7 +1237,7 @@ func TestFieldByIndex(t *testing.T) {
func TestFieldByName(t *testing.T) {
for _, test := range fieldTests {
- s := Typeof(test.s)
+ s := TypeOf(test.s)
f, found := s.FieldByName(test.name)
if found {
if test.index != nil {
@@ -1246,7 +1259,7 @@ func TestFieldByName(t *testing.T) {
}
if test.value != 0 {
- v := NewValue(test.s).FieldByName(test.name)
+ v := ValueOf(test.s).FieldByName(test.name)
if v.IsValid() {
if x, ok := v.Interface().(int); ok {
if x != test.value {
@@ -1263,19 +1276,19 @@ func TestFieldByName(t *testing.T) {
}
func TestImportPath(t *testing.T) {
- if path := Typeof(vector.Vector{}).PkgPath(); path != "container/vector" {
- t.Errorf("Typeof(vector.Vector{}).PkgPath() = %q, want \"container/vector\"", path)
+ if path := TypeOf(vector.Vector{}).PkgPath(); path != "container/vector" {
+ t.Errorf("TypeOf(vector.Vector{}).PkgPath() = %q, want \"container/vector\"", path)
}
}
func TestDotDotDot(t *testing.T) {
// Test example from FuncType.DotDotDot documentation.
var f func(x int, y ...float64)
- typ := Typeof(f)
- if typ.NumIn() == 2 && typ.In(0) == Typeof(int(0)) {
+ 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) {
+ if sl.Elem() == TypeOf(0.0) {
// ok
return
}
@@ -1304,8 +1317,8 @@ func (*inner) m() {}
func (*outer) m() {}
func TestNestedMethods(t *testing.T) {
- typ := Typeof((*outer)(nil))
- if typ.NumMethod() != 1 || typ.Method(0).Func.Pointer() != NewValue((*outer).m).Pointer() {
+ 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)
@@ -1314,40 +1327,40 @@ func TestNestedMethods(t *testing.T) {
}
}
-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.Pointer() != NewValue((*outerInt).m).Pointer() {
- 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.Pointer())
}
}
- i := &innerInt{3}
- if v := NewValue(i).Method(0).Call(nil)[0].Int(); 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].Int(); 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)
}
@@ -1356,15 +1369,15 @@ func TestEmbeddedMethods(t *testing.T) {
func TestPtrTo(t *testing.T) {
var i int
- typ := Typeof(i)
+ 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))
+ if typ != TypeOf(i) {
+ t.Errorf("after 100 PtrTo and Elem, have %s, want %s", typ, TypeOf(i))
}
}
@@ -1373,7 +1386,7 @@ func TestAddr(t *testing.T) {
X, Y int
}
- v := NewValue(&p)
+ v := ValueOf(&p)
v = v.Elem()
v = v.Addr()
v = v.Elem()
@@ -1383,9 +1396,10 @@ func TestAddr(t *testing.T) {
t.Errorf("Addr.Elem.Set failed to set value")
}
- // Again but take address of the NewValue value.
+ // Again but take address of the ValueOf value.
// Exercises generation of PtrTypes not present in the binary.
- v = NewValue(&p)
+ q := &p
+ v = ValueOf(&q).Elem()
v = v.Addr()
v = v.Elem()
v = v.Elem()
@@ -1399,7 +1413,8 @@ func TestAddr(t *testing.T) {
// Starting without pointer we should get changed value
// in interface.
- v = NewValue(p)
+ qq := p
+ v = ValueOf(&qq).Elem()
v0 := v
v = v.Addr()
v = v.Elem()
@@ -1415,3 +1430,67 @@ func TestAddr(t *testing.T) {
t.Errorf("Addr.Elem.Set valued to set value in top value")
}
}
+
+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)
+ }
+ if runtime.MemStats.Mallocs != 0 {
+ 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")
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-27 12:47:43 +0000