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path: root/libgo/go/reflect/all_test.go
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Diffstat (limited to 'libgo/go/reflect/all_test.go')
-rw-r--r--libgo/go/reflect/all_test.go247
1 files changed, 236 insertions, 11 deletions
diff --git a/libgo/go/reflect/all_test.go b/libgo/go/reflect/all_test.go
index e601c2cbde2..f51e95fd734 100644
--- a/libgo/go/reflect/all_test.go
+++ b/libgo/go/reflect/all_test.go
@@ -648,6 +648,20 @@ var (
type self struct{}
+type Loop *Loop
+type Loopy interface{}
+
+var loop1, loop2 Loop
+var loopy1, loopy2 Loopy
+
+func init() {
+ loop1 = &loop2
+ loop2 = &loop1
+
+ loopy1 = &loopy2
+ loopy2 = &loopy1
+}
+
var deepEqualTests = []DeepEqualTest{
// Equalities
{nil, nil, true},
@@ -706,6 +720,12 @@ var deepEqualTests = []DeepEqualTest{
{&[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},
+
+ // Possible loops.
+ {&loop1, &loop1, true},
+ {&loop1, &loop2, true},
+ {&loopy1, &loopy1, true},
+ {&loopy1, &loopy2, true},
}
func TestDeepEqual(t *testing.T) {
@@ -1535,6 +1555,34 @@ func BenchmarkCall(b *testing.B) {
})
}
+func BenchmarkCallArgCopy(b *testing.B) {
+ byteArray := func(n int) Value {
+ return Zero(ArrayOf(n, TypeOf(byte(0))))
+ }
+ sizes := [...]struct {
+ fv Value
+ arg Value
+ }{
+ {ValueOf(func(a [128]byte) {}), byteArray(128)},
+ {ValueOf(func(a [256]byte) {}), byteArray(256)},
+ {ValueOf(func(a [1024]byte) {}), byteArray(1024)},
+ {ValueOf(func(a [4096]byte) {}), byteArray(4096)},
+ {ValueOf(func(a [65536]byte) {}), byteArray(65536)},
+ }
+ for _, size := range sizes {
+ bench := func(b *testing.B) {
+ args := []Value{size.arg}
+ b.SetBytes(int64(size.arg.Len()))
+ b.ResetTimer()
+ for i := 0; i < b.N; i++ {
+ size.fv.Call(args)
+ }
+ }
+ name := fmt.Sprintf("size=%v", size.arg.Len())
+ b.Run(name, bench)
+ }
+}
+
func TestMakeFunc(t *testing.T) {
f := dummy
fv := MakeFunc(TypeOf(f), func(in []Value) []Value { return in })
@@ -2277,25 +2325,39 @@ func TestFieldPkgPath(t *testing.T) {
unexported string
OtherPkgFields
}{})
- for _, test := range []struct {
+
+ type pkgpathTest struct {
index []int
pkgPath string
anonymous bool
- }{
+ }
+
+ checkPkgPath := func(name string, s []pkgpathTest) {
+ for _, test := range s {
+ f := typ.FieldByIndex(test.index)
+ if got, want := f.PkgPath, test.pkgPath; got != want {
+ t.Errorf("%s: Field(%d).PkgPath = %q, want %q", name, test.index, got, want)
+ }
+ if got, want := f.Anonymous, test.anonymous; got != want {
+ t.Errorf("%s: Field(%d).Anonymous = %v, want %v", name, test.index, got, want)
+ }
+ }
+ }
+
+ checkPkgPath("testStruct", []pkgpathTest{
{[]int{0}, "", false}, // Exported
{[]int{1}, "reflect_test", false}, // unexported
{[]int{2}, "", true}, // OtherPkgFields
{[]int{2, 0}, "", false}, // OtherExported
{[]int{2, 1}, "reflect", false}, // otherUnexported
- } {
- f := typ.FieldByIndex(test.index)
- if got, want := f.PkgPath, test.pkgPath; got != want {
- t.Errorf("Field(%d).PkgPath = %q, want %q", test.index, got, want)
- }
- if got, want := f.Anonymous, test.anonymous; got != want {
- t.Errorf("Field(%d).Anonymous = %v, want %v", test.index, got, want)
- }
- }
+ })
+
+ type localOtherPkgFields OtherPkgFields
+ typ = TypeOf(localOtherPkgFields{})
+ checkPkgPath("localOtherPkgFields", []pkgpathTest{
+ {[]int{0}, "", false}, // OtherExported
+ {[]int{1}, "reflect", false}, // otherUnexported
+ })
}
func TestVariadicType(t *testing.T) {
@@ -3077,6 +3139,9 @@ func ReadWriterV(x io.ReadWriter) Value {
}
type Empty struct{}
+type MyStruct struct {
+ x int `some:"tag"`
+}
type MyString string
type MyBytes []byte
type MyRunes []int32
@@ -3388,6 +3453,35 @@ var convertTests = []struct {
{V((func())(nil)), V(MyFunc(nil))},
{V((MyFunc)(nil)), V((func())(nil))},
+ // structs with different tags
+ {V(struct {
+ x int `some:"foo"`
+ }{}), V(struct {
+ x int `some:"bar"`
+ }{})},
+
+ {V(struct {
+ x int `some:"bar"`
+ }{}), V(struct {
+ x int `some:"foo"`
+ }{})},
+
+ {V(MyStruct{}), V(struct {
+ x int `some:"foo"`
+ }{})},
+
+ {V(struct {
+ x int `some:"foo"`
+ }{}), V(MyStruct{})},
+
+ {V(MyStruct{}), V(struct {
+ x int `some:"bar"`
+ }{})},
+
+ {V(struct {
+ x int `some:"bar"`
+ }{}), V(MyStruct{})},
+
// can convert *byte and *MyByte
{V((*byte)(nil)), V((*MyByte)(nil))},
{V((*MyByte)(nil)), V((*byte)(nil))},
@@ -3973,6 +4067,39 @@ func TestStructOf(t *testing.T) {
}
}
+ // Check size and alignment with a trailing zero-sized field.
+ st = StructOf([]StructField{
+ {
+ Name: "F1",
+ Type: TypeOf(byte(0)),
+ },
+ {
+ Name: "F2",
+ Type: TypeOf([0]*byte{}),
+ },
+ })
+ stt = TypeOf(struct {
+ G1 byte
+ G2 [0]*byte
+ }{})
+ // Broken with gccgo for now--gccgo does not pad structs yet.
+ // if st.Size() != stt.Size() {
+ // t.Errorf("constructed zero-padded struct size = %v, want %v", st.Size(), stt.Size())
+ // }
+ if st.Align() != stt.Align() {
+ t.Errorf("constructed zero-padded struct align = %v, want %v", st.Align(), stt.Align())
+ }
+ if st.FieldAlign() != stt.FieldAlign() {
+ t.Errorf("constructed zero-padded struct field align = %v, want %v", st.FieldAlign(), stt.FieldAlign())
+ }
+ for i := 0; i < st.NumField(); i++ {
+ o1 := st.Field(i).Offset
+ o2 := stt.Field(i).Offset
+ if o1 != o2 {
+ t.Errorf("constructed zero-padded struct field %v offset = %v, want %v", i, o1, o2)
+ }
+ }
+
// check duplicate names
shouldPanic(func() {
StructOf([]StructField{
@@ -5788,3 +5915,101 @@ func BenchmarkNew(b *testing.B) {
New(v)
}
}
+
+func TestSwapper(t *testing.T) {
+ type I int
+ var a, b, c I
+ type pair struct {
+ x, y int
+ }
+ type pairPtr struct {
+ x, y int
+ p *I
+ }
+ type S string
+
+ tests := []struct {
+ in interface{}
+ i, j int
+ want interface{}
+ }{
+ {
+ in: []int{1, 20, 300},
+ i: 0,
+ j: 2,
+ want: []int{300, 20, 1},
+ },
+ {
+ in: []uintptr{1, 20, 300},
+ i: 0,
+ j: 2,
+ want: []uintptr{300, 20, 1},
+ },
+ {
+ in: []int16{1, 20, 300},
+ i: 0,
+ j: 2,
+ want: []int16{300, 20, 1},
+ },
+ {
+ in: []int8{1, 20, 100},
+ i: 0,
+ j: 2,
+ want: []int8{100, 20, 1},
+ },
+ {
+ in: []*I{&a, &b, &c},
+ i: 0,
+ j: 2,
+ want: []*I{&c, &b, &a},
+ },
+ {
+ in: []string{"eric", "sergey", "larry"},
+ i: 0,
+ j: 2,
+ want: []string{"larry", "sergey", "eric"},
+ },
+ {
+ in: []S{"eric", "sergey", "larry"},
+ i: 0,
+ j: 2,
+ want: []S{"larry", "sergey", "eric"},
+ },
+ {
+ in: []pair{{1, 2}, {3, 4}, {5, 6}},
+ i: 0,
+ j: 2,
+ want: []pair{{5, 6}, {3, 4}, {1, 2}},
+ },
+ {
+ in: []pairPtr{{1, 2, &a}, {3, 4, &b}, {5, 6, &c}},
+ i: 0,
+ j: 2,
+ want: []pairPtr{{5, 6, &c}, {3, 4, &b}, {1, 2, &a}},
+ },
+ }
+ for i, tt := range tests {
+ inStr := fmt.Sprint(tt.in)
+ Swapper(tt.in)(tt.i, tt.j)
+ if !DeepEqual(tt.in, tt.want) {
+ t.Errorf("%d. swapping %v and %v of %v = %v; want %v", i, tt.i, tt.j, inStr, tt.in, tt.want)
+ }
+ }
+}
+
+// TestUnaddressableField tests that the reflect package will not allow
+// a type from another package to be used as a named type with an
+// unexported field.
+//
+// This ensures that unexported fields cannot be modified by other packages.
+func TestUnaddressableField(t *testing.T) {
+ var b Buffer // type defined in reflect, a different package
+ var localBuffer struct {
+ buf []byte
+ }
+ lv := ValueOf(&localBuffer).Elem()
+ rv := ValueOf(b)
+ shouldPanic(func() {
+ lv.Set(rv)
+ })
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-04 19:49:18 +0000