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-rw-r--r--src/pkg/reflect/all_test.go1564
1 files changed, 1564 insertions, 0 deletions
diff --git a/src/pkg/reflect/all_test.go b/src/pkg/reflect/all_test.go
new file mode 100644
index 000000000..257278e8f
--- /dev/null
+++ b/src/pkg/reflect/all_test.go
@@ -0,0 +1,1564 @@
+// Copyright 2009 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 reflect_test
+
+import (
+ "bytes"
+ "container/vector"
+ "fmt"
+ "io"
+ "os"
+ . "reflect"
+ "runtime"
+ "testing"
+ "unsafe"
+)
+
+type integer int
+type T struct {
+ a int
+ b float64
+ c string
+ d *int
+}
+
+type pair struct {
+ i interface{}
+ s string
+}
+
+func isDigit(c uint8) bool { return '0' <= c && c <= '9' }
+
+func assert(t *testing.T, s, want string) {
+ if s != want {
+ t.Errorf("have %#q want %#q", s, want)
+ }
+}
+
+func typestring(i interface{}) string { return TypeOf(i).String() }
+
+var typeTests = []pair{
+ {struct{ x int }{}, "int"},
+ {struct{ x int8 }{}, "int8"},
+ {struct{ x int16 }{}, "int16"},
+ {struct{ x int32 }{}, "int32"},
+ {struct{ x int64 }{}, "int64"},
+ {struct{ x uint }{}, "uint"},
+ {struct{ x uint8 }{}, "uint8"},
+ {struct{ x uint16 }{}, "uint16"},
+ {struct{ x uint32 }{}, "uint32"},
+ {struct{ x uint64 }{}, "uint64"},
+ {struct{ x float32 }{}, "float32"},
+ {struct{ x float64 }{}, "float64"},
+ {struct{ x int8 }{}, "int8"},
+ {struct{ x (**int8) }{}, "**int8"},
+ {struct{ x (**integer) }{}, "**reflect_test.integer"},
+ {struct{ x ([32]int32) }{}, "[32]int32"},
+ {struct{ x ([]int8) }{}, "[]int8"},
+ {struct{ x (map[string]int32) }{}, "map[string] int32"},
+ {struct{ x (chan<- string) }{}, "chan<- string"},
+ {struct {
+ x struct {
+ c chan *int32
+ d float32
+ }
+ }{},
+ "struct { c chan *int32; d float32 }",
+ },
+ {struct{ x (func(a int8, b int32)) }{}, "func(int8, int32)"},
+ {struct {
+ x struct {
+ c func(chan *integer, *int8)
+ }
+ }{},
+ "struct { c func(chan *reflect_test.integer, *int8) }",
+ },
+ {struct {
+ x struct {
+ a int8
+ b int32
+ }
+ }{},
+ "struct { a int8; b int32 }",
+ },
+ {struct {
+ x struct {
+ a int8
+ b int8
+ c int32
+ }
+ }{},
+ "struct { a int8; b int8; c int32 }",
+ },
+ {struct {
+ x struct {
+ a int8
+ b int8
+ c int8
+ d int32
+ }
+ }{},
+ "struct { a int8; b int8; c int8; d int32 }",
+ },
+ {struct {
+ x struct {
+ a int8
+ b int8
+ c int8
+ d int8
+ e int32
+ }
+ }{},
+ "struct { a int8; b int8; c int8; d int8; e int32 }",
+ },
+ {struct {
+ x struct {
+ a int8
+ b int8
+ c int8
+ d int8
+ e int8
+ f int32
+ }
+ }{},
+ "struct { a int8; b int8; c int8; d int8; e int8; f int32 }",
+ },
+ {struct {
+ x struct {
+ a int8 `reflect:"hi there"`
+ }
+ }{},
+ `struct { a int8 "reflect:\"hi there\"" }`,
+ },
+ {struct {
+ x struct {
+ a int8 `reflect:"hi \x00there\t\n\"\\"`
+ }
+ }{},
+ `struct { a int8 "reflect:\"hi \\x00there\\t\\n\\\"\\\\\"" }`,
+ },
+ {struct {
+ x struct {
+ f func(args ...int)
+ }
+ }{},
+ "struct { f func(...int) }",
+ },
+ {struct {
+ x (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{
+ {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}",
+ },
+ {new(struct{ c func(chan *integer, *int8) }),
+ "struct { c func(chan *reflect_test.integer, *int8) }{func(chan *reflect_test.integer, *int8)(0)}",
+ },
+ {new(struct {
+ a int8
+ b int32
+ }),
+ "struct { a int8; b int32 }{0, 0}",
+ },
+ {new(struct {
+ a int8
+ b int8
+ c int32
+ }),
+ "struct { a int8; b int8; c int32 }{0, 0, 0}",
+ },
+}
+
+func testType(t *testing.T, i int, typ Type, want string) {
+ s := typ.String()
+ if s != want {
+ t.Errorf("#%d: have %#q, want %#q", i, s, want)
+ }
+}
+
+func TestTypes(t *testing.T) {
+ for i, tt := range typeTests {
+ testType(t, i, ValueOf(tt.i).Field(0).Type(), tt.s)
+ }
+}
+
+func TestSet(t *testing.T) {
+ for i, tt := range valueTests {
+ v := ValueOf(tt.i).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 {
+ t.Errorf("#%d: have %#q, want %#q", i, s, tt.s)
+ }
+ }
+}
+
+func TestSetValue(t *testing.T) {
+ for i, tt := range valueTests {
+ 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 {
+ t.Errorf("#%d: have %#q, want %#q", i, s, tt.s)
+ }
+ }
+}
+
+var _i = 7
+
+var valueToStringTests = []pair{
+ {123, "123"},
+ {123.5, "123.5"},
+ {byte(123), "123"},
+ {"abc", "abc"},
+ {T{123, 456.75, "hello", &_i}, "reflect_test.T{123, 456.75, hello, *int(&7)}"},
+ {new(chan *T), "*chan *reflect_test.T(&chan *reflect_test.T)"},
+ {[10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, "[10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}"},
+ {&[10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, "*[10]int(&[10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10})"},
+ {[]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, "[]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}"},
+ {&[]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, "*[]int(&[]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10})"},
+}
+
+func TestValueToString(t *testing.T) {
+ for i, test := range valueToStringTests {
+ 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 := 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 = 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 {
+ t.Errorf("[]int: have %#q want %#q", s, want1)
+ }
+}
+
+func TestPtrPointTo(t *testing.T) {
+ var ip *int32
+ var i int32 = 1234
+ 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 := 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 := 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 := 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)).Elem(), "int8")
+
+ typ := TypeOf((*struct {
+ c chan *int32
+ d float32
+ })(nil))
+ testType(t, 3, typ, "*struct { c chan *int32; d float32 }")
+ etyp := typ.Elem()
+ testType(t, 4, etyp, "struct { c chan *int32; d float32 }")
+ styp := etyp
+ f := styp.Field(0)
+ testType(t, 5, f.Type, "chan *int32")
+
+ f, present := styp.FieldByName("d")
+ if !present {
+ t.Errorf("FieldByName says present field is absent")
+ }
+ testType(t, 6, f.Type, "float32")
+
+ f, present = styp.FieldByName("absent")
+ if present {
+ t.Errorf("FieldByName says absent field is present")
+ }
+
+ typ = TypeOf([32]int32{})
+ testType(t, 7, typ, "[32]int32")
+ testType(t, 8, typ.Elem(), "int32")
+
+ 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))
+ 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 {
+ d []uint32 `reflect:"TAG"`
+ }{}).Field(0).Type
+ testType(t, 14, typ, "[]uint32")
+}
+
+func TestInterfaceGet(t *testing.T) {
+ var inter struct {
+ E interface{}
+ }
+ 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{}
+ }
+ 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.(float64); !ok {
+ t.Error("v2.Interface() did not return float64, got ", TypeOf(i3))
+ }
+}
+
+func TestFunctionValue(t *testing.T) {
+ 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()")
+}
+
+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}
+ for i := 0; i < len(b); i++ {
+ if b[i] != c[i] {
+ t.Fatalf("b != c before test")
+ }
+ }
+ a1 := a
+ b1 := b
+ aa := ValueOf(&a1).Elem()
+ ab := ValueOf(&b1).Elem()
+ for tocopy := 1; tocopy <= 7; tocopy++ {
+ aa.SetLen(tocopy)
+ Copy(ab, aa)
+ aa.SetLen(8)
+ for i := 0; i < tocopy; i++ {
+ if a[i] != b[i] {
+ t.Errorf("(i) tocopy=%d a[%d]=%d, b[%d]=%d",
+ tocopy, i, a[i], i, b[i])
+ }
+ }
+ for i := tocopy; i < len(b); i++ {
+ if b[i] != c[i] {
+ if i < len(a) {
+ t.Errorf("(ii) tocopy=%d a[%d]=%d, b[%d]=%d, c[%d]=%d",
+ tocopy, i, a[i], i, b[i], i, c[i])
+ } else {
+ t.Errorf("(iii) tocopy=%d b[%d]=%d, c[%d]=%d",
+ tocopy, i, b[i], i, c[i])
+ }
+ } else {
+ t.Logf("tocopy=%d elem %d is okay\n", tocopy, 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 := 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("ValueOf(%v).Interface().(*Big) = %v", b, b1)
+ }
+}
+
+type big struct {
+ a, b, c, d, e int64
+}
+
+func TestBigStruct(t *testing.T) {
+ b := big{1, 2, 3, 4, 5}
+ 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("ValueOf(%v).Interface().(big) = %v", b, b1)
+ }
+}
+
+type Basic struct {
+ x int
+ y float32
+}
+
+type NotBasic Basic
+
+type DeepEqualTest struct {
+ a, b interface{}
+ eq bool
+}
+
+var deepEqualTests = []DeepEqualTest{
+ // Equalities
+ {1, 1, true},
+ {int32(1), int32(1), true},
+ {0.5, 0.5, true},
+ {float32(0.5), float32(0.5), true},
+ {"hello", "hello", true},
+ {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},
+ {map[int]string{1: "one", 2: "two"}, map[int]string{2: "two", 1: "one"}, true},
+
+ // Inequalities
+ {1, 2, false},
+ {int32(1), int32(2), false},
+ {0.5, 0.6, false},
+ {float32(0.5), float32(0.6), false},
+ {"hello", "hey", false},
+ {make([]int, 10), make([]int, 11), false},
+ {&[3]int{1, 2, 3}, &[3]int{1, 2, 4}, false},
+ {Basic{1, 0.5}, Basic{1, 0.6}, false},
+ {Basic{1, 0}, Basic{2, 0}, false},
+ {map[int]string{1: "one", 3: "two"}, map[int]string{2: "two", 1: "one"}, false},
+ {map[int]string{1: "one", 2: "txo"}, map[int]string{2: "two", 1: "one"}, false},
+ {map[int]string{1: "one"}, map[int]string{2: "two", 1: "one"}, false},
+ {map[int]string{2: "two", 1: "one"}, map[int]string{1: "one"}, false},
+ {nil, 1, false},
+ {1, nil, false},
+
+ // Mismatched types
+ {1, 1.0, false},
+ {int32(1), int64(1), false},
+ {0.5, "hello", false},
+ {[]int{1, 2, 3}, [3]int{1, 2, 3}, false},
+ {&[3]interface{}{1, 2, 4}, &[3]interface{}{1, 2, "s"}, false},
+ {Basic{1, 0.5}, NotBasic{1, 0.5}, false},
+ {map[uint]string{1: "one", 2: "two"}, map[int]string{2: "two", 1: "one"}, false},
+}
+
+func TestDeepEqual(t *testing.T) {
+ for _, test := range deepEqualTests {
+ if r := DeepEqual(test.a, test.b); r != test.eq {
+ t.Errorf("DeepEqual(%v, %v) = %v, want %v", test.a, test.b, r, test.eq)
+ }
+ }
+}
+
+func TestTypeOf(t *testing.T) {
+ for _, test := range deepEqualTests {
+ v := ValueOf(test.a)
+ if !v.IsValid() {
+ continue
+ }
+ typ := TypeOf(test.a)
+ if typ != v.Type() {
+ t.Errorf("TypeOf(%v) = %v, but ValueOf(%v).Type() = %v", test.a, typ, test.a, v.Type())
+ }
+ }
+}
+
+type Recursive struct {
+ x int
+ r *Recursive
+}
+
+func TestDeepEqualRecursiveStruct(t *testing.T) {
+ a, b := new(Recursive), new(Recursive)
+ *a = Recursive{12, a}
+ *b = Recursive{12, b}
+ if !DeepEqual(a, b) {
+ t.Error("DeepEqual(recursive same) = false, want true")
+ }
+}
+
+type _Complex struct {
+ a int
+ b [3]*_Complex
+ c *string
+ d map[float64]float64
+}
+
+func TestDeepEqualComplexStruct(t *testing.T) {
+ 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}
+ *b = _Complex{5, [3]*_Complex{b, a, a}, &strb, m}
+ if !DeepEqual(a, b) {
+ t.Error("DeepEqual(complex same) = false, want true")
+ }
+}
+
+func TestDeepEqualComplexStructInequality(t *testing.T) {
+ 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}
+ *b = _Complex{5, [3]*_Complex{b, a, a}, &strb, m}
+ if DeepEqual(a, b) {
+ t.Error("DeepEqual(complex different) = true, want false")
+ }
+}
+
+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 := ValueOf(x)
+ f := s.Type().Field(1)
+ if f.Offset != offs {
+ t.Error("mismatched offsets in structure alignment:", f.Offset, offs)
+ }
+}
+
+// Check that structure alignment & offsets viewed through reflect agree with those
+// from the compiler itself.
+func TestAlignment(t *testing.T) {
+ type T1inner struct {
+ a int
+ }
+ type T1 struct {
+ T1inner
+ f int
+ }
+ type T2inner struct {
+ a, b int
+ }
+ type T2 struct {
+ T2inner
+ f int
+ }
+
+ x := T1{T1inner{2}, 17}
+ check2ndField(x, uintptr(unsafe.Pointer(&x.f))-uintptr(unsafe.Pointer(&x)), t)
+
+ x1 := T2{T2inner{2, 3}, 17}
+ check2ndField(x1, uintptr(unsafe.Pointer(&x1.f))-uintptr(unsafe.Pointer(&x1)), t)
+}
+
+func Nil(a interface{}, t *testing.T) {
+ n := ValueOf(a).Field(0)
+ if !n.IsNil() {
+ t.Errorf("%v should be nil", a)
+ }
+}
+
+func NotNil(a interface{}, t *testing.T) {
+ n := ValueOf(a).Field(0)
+ if n.IsNil() {
+ t.Errorf("value of type %v should not be nil", ValueOf(a).Type().String())
+ }
+}
+
+func TestIsNil(t *testing.T) {
+ // These implement IsNil.
+ // Wrap in extra struct to hide interface type.
+ doNil := []interface{}{
+ struct{ x *int }{},
+ struct{ x interface{} }{},
+ struct{ x map[string]int }{},
+ struct{ x func() bool }{},
+ struct{ x chan int }{},
+ struct{ x []string }{},
+ }
+ for _, ts := range doNil {
+ ty := TypeOf(ts).Field(0).Type
+ v := Zero(ty)
+ v.IsNil() // panics if not okay to call
+ }
+
+ // Check the implementations
+ var pi struct {
+ x *int
+ }
+ Nil(pi, t)
+ pi.x = new(int)
+ NotNil(pi, t)
+
+ var si struct {
+ x []int
+ }
+ Nil(si, t)
+ si.x = make([]int, 10)
+ NotNil(si, t)
+
+ var ci struct {
+ x chan int
+ }
+ Nil(ci, t)
+ ci.x = make(chan int)
+ NotNil(ci, t)
+
+ var mi struct {
+ x map[int]int
+ }
+ Nil(mi, t)
+ mi.x = make(map[int]int)
+ NotNil(mi, t)
+
+ var ii struct {
+ x interface{}
+ }
+ Nil(ii, t)
+ ii.x = 2
+ NotNil(ii, t)
+
+ var fi struct {
+ x func(t *testing.T)
+ }
+ Nil(fi, t)
+ fi.x = TestIsNil
+ NotNil(fi, t)
+}
+
+func TestInterfaceExtraction(t *testing.T) {
+ var s struct {
+ w io.Writer
+ }
+
+ 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 := 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 := ValueOf(m)
+ if n := mv.Len(); n != len(m) {
+ t.Errorf("Len = %d, want %d", n, len(m))
+ }
+ keys := mv.MapKeys()
+ i := 0
+ 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]; kv.String() != k {
+ t.Errorf("Keys[%q] = %d, want %d", i, kv.Int(), k)
+ }
+ i++
+
+ // Check that value lookup is correct.
+ 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(ValueOf(k), ValueOf(v))
+ }
+ vv := mv.MapIndex(ValueOf("not-present"))
+ if vv.IsValid() {
+ t.Errorf("Invalid key: got non-nil value %s", valueToString(vv))
+ }
+
+ newm := newmap.Interface().(map[string]int)
+ if len(newm) != len(m) {
+ t.Errorf("length after copy: newm=%d, m=%d", newm, m)
+ }
+
+ for k, v := range newm {
+ mv, ok := m[k]
+ if mv != v {
+ t.Errorf("newm[%q] = %d, but m[%q] = %d, %v", k, v, k, mv, ok)
+ }
+ }
+
+ newmap.SetMapIndex(ValueOf("a"), Value{})
+ v, ok := newm["a"]
+ if ok {
+ t.Errorf("newm[\"a\"] = %d after delete", v)
+ }
+
+ 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 Value
+
+ // check both ways to allocate channels
+ switch loop {
+ case 1:
+ c = make(chan int, 1)
+ cv = ValueOf(c)
+ case 0:
+ cv = MakeChan(TypeOf(c), 1)
+ c = cv.Interface().(chan int)
+ }
+
+ // Send
+ cv.Send(ValueOf(2))
+ if i := <-c; i != 2 {
+ t.Errorf("reflect Send 2, native recv %d", i)
+ }
+
+ // Recv
+ c <- 3
+ if i, ok := cv.Recv(); i.Int() != 3 || !ok {
+ t.Errorf("native send 3, reflect Recv %d, %t", i.Int(), ok)
+ }
+
+ // TryRecv fail
+ val, ok := cv.TryRecv()
+ if val.IsValid() || ok {
+ t.Errorf("TryRecv on empty chan: %s, %t", valueToString(val), ok)
+ }
+
+ // TryRecv success
+ c <- 4
+ val, ok = cv.TryRecv()
+ if !val.IsValid() {
+ t.Errorf("TryRecv on ready chan got nil")
+ } 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(ValueOf(5))
+ i := <-c
+ if ok {
+ t.Errorf("TrySend on full chan succeeded: value %d", i)
+ }
+
+ // TrySend success
+ ok = cv.TrySend(ValueOf(6))
+ if !ok {
+ t.Errorf("TrySend on empty chan failed")
+ } else {
+ if i = <-c; i != 6 {
+ t.Errorf("TrySend 6, recv %d", i)
+ }
+ }
+
+ // Close
+ c <- 123
+ cv.Close()
+ if i, ok := cv.Recv(); i.Int() != 123 || !ok {
+ t.Errorf("send 123 then close; Recv %d, %t", i.Int(), ok)
+ }
+ 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), 0)
+ c = cv.Interface().(chan int)
+ 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: isvalid=%v ok=%v", v.IsValid(), ok)
+ }
+
+ // len/cap
+ cv = MakeChan(TypeOf(c), 10)
+ c = cv.Interface().(chan int)
+ for i := 0; i < 3; i++ {
+ c <- i
+ }
+ if l, m := cv.Len(), cv.Cap(); l != len(c) || m != cap(c) {
+ t.Errorf("Len/Cap = %d/%d want %d/%d", l, m, len(c), cap(c))
+ }
+
+}
+
+// Difficult test for function call because of
+// implicit padding between arguments.
+func dummy(b byte, c int, d byte) (i byte, j int, k byte) {
+ return b, c, d
+}
+
+func TestFunc(t *testing.T) {
+ 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 := 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)
+ }
+}
+
+type Point struct {
+ x, y int
+}
+
+// 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(1).Func.Call([]Value{ValueOf(p), ValueOf(10)})[0].Int()
+ if i != 250 {
+ t.Errorf("Type Method returned %d; want 250", i)
+ }
+
+ 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 = ValueOf(p).Method(1).Call([]Value{ValueOf(10)})[0].Int()
+ if i != 250 {
+ t.Errorf("Value Method returned %d; want 250", i)
+ }
+ i = ValueOf(p).MethodByName("Dist").Call([]Value{ValueOf(10)})[0].Int()
+ if i != 250 {
+ t.Errorf("Value MethodByName returned %d; want 250", i)
+ }
+
+ // Curried method of pointer.
+ i = ValueOf(&p).Method(1).Call([]Value{ValueOf(10)})[0].Int()
+ if i != 250 {
+ t.Errorf("Pointer Value Method returned %d; want 250", i)
+ }
+ i = ValueOf(&p).MethodByName("Dist").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 ValueOf directly would
+ // access the underlying Point, not the interface.
+ var s = struct {
+ X interface {
+ Dist(int) int
+ }
+ }{p}
+ 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)
+ }
+ i = pv.MethodByName("Dist").Call([]Value{ValueOf(10)})[0].Int()
+ if i != 250 {
+ t.Errorf("Interface MethodByName returned %d; want 250", i)
+ }
+}
+
+func TestInterfaceSet(t *testing.T) {
+ p := &Point{3, 4}
+
+ var s struct {
+ I interface{}
+ P interface {
+ Dist(int) int
+ }
+ }
+ 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(ValueOf(p))
+ if q := s.P.(*Point); q != p {
+ t.Errorf("i: have %p want %p", q, p)
+ }
+
+ i := pv.Method(0).Call([]Value{ValueOf(10)})[0].Int()
+ if i != 250 {
+ t.Errorf("Interface Method returned %d; want 250", i)
+ }
+}
+
+type T1 struct {
+ a string
+ int
+}
+
+func TestAnonymousFields(t *testing.T) {
+ var field StructField
+ var ok bool
+ var t1 T1
+ type1 := TypeOf(t1)
+ if field, ok = type1.FieldByName("int"); !ok {
+ t.Error("no field 'int'")
+ }
+ if field.Index[0] != 1 {
+ t.Error("field index should be 1; is", field.Index)
+ }
+}
+
+type FTest struct {
+ s interface{}
+ name string
+ index []int
+ value int
+}
+
+type D1 struct {
+ d int
+}
+type D2 struct {
+ d int
+}
+
+type S0 struct {
+ a, b, c int
+ D1
+ D2
+}
+
+type S1 struct {
+ b int
+ S0
+}
+
+type S2 struct {
+ a int
+ *S1
+}
+
+type S1x struct {
+ S1
+}
+
+type S1y struct {
+ S1
+}
+
+type S3 struct {
+ S1x
+ S2
+ d, e int
+ *S1y
+}
+
+type S4 struct {
+ *S4
+ 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'},
+ {S1{}, "S0", []int{1}, 0},
+ {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},
+ {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},
+}
+
+func TestFieldByIndex(t *testing.T) {
+ for _, test := range fieldTests {
+ s := TypeOf(test.s)
+ f := s.FieldByIndex(test.index)
+ if f.Name != "" {
+ if test.index != nil {
+ if f.Name != test.name {
+ t.Errorf("%s.%s found; want %s", s.Name(), f.Name, test.name)
+ }
+ } else {
+ t.Errorf("%s.%s found", s.Name(), f.Name)
+ }
+ } else if len(test.index) > 0 {
+ t.Errorf("%s.%s not found", s.Name(), test.name)
+ }
+
+ if test.value != 0 {
+ 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)
+ }
+ } else {
+ t.Errorf("%s%v value not an int", s.Name(), test.index)
+ }
+ } else {
+ t.Errorf("%s%v value not found", s.Name(), test.index)
+ }
+ }
+ }
+}
+
+func TestFieldByName(t *testing.T) {
+ for _, test := range fieldTests {
+ s := TypeOf(test.s)
+ f, found := s.FieldByName(test.name)
+ if found {
+ if test.index != nil {
+ // Verify field depth and index.
+ if len(f.Index) != len(test.index) {
+ t.Errorf("%s.%s depth %d; want %d", s.Name(), test.name, len(f.Index), len(test.index))
+ } else {
+ for i, x := range f.Index {
+ if x != test.index[i] {
+ t.Errorf("%s.%s.Index[%d] is %d; want %d", s.Name(), test.name, i, x, test.index[i])
+ }
+ }
+ }
+ } else {
+ t.Errorf("%s.%s found", s.Name(), f.Name)
+ }
+ } else if len(test.index) > 0 {
+ t.Errorf("%s.%s not found", s.Name(), test.name)
+ }
+
+ if test.value != 0 {
+ 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)
+ }
+ } else {
+ t.Errorf("%s.%s value not an int", s.Name(), test.name)
+ }
+ } else {
+ t.Errorf("%s.%s value not found", s.Name(), test.name)
+ }
+ }
+ }
+}
+
+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)
+ }
+}
+
+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) = []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))
+ }
+ t.Error(s)
+}
+
+type inner struct {
+ x int
+}
+
+type outer struct {
+ y int
+ inner
+}
+
+func (*inner) m() {}
+func (*outer) m() {}
+
+func TestNestedMethods(t *testing.T) {
+ 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.Pointer())
+ }
+ }
+}
+
+type InnerInt struct {
+ X int
+}
+
+type OuterInt struct {
+ Y int
+ InnerInt
+}
+
+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() != 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 := 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 := ValueOf(o).Method(0).Call(nil)[0].Int(); v != 2 {
+ t.Errorf("i.M() = %d, want 2", v)
+ }
+
+ 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")
+ }
+}
+
+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)
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-25 15:20:28 +0000