forked from github/multus-cni
78 lines
2.4 KiB
Go
78 lines
2.4 KiB
Go
package tests
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import (
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"github.com/modern-go/reflect2"
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"github.com/modern-go/test"
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"testing"
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"context"
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"github.com/modern-go/test/must"
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"github.com/modern-go/test/should"
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"unsafe"
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)
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func Test_slice_eface(t *testing.T) {
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t.Run("MakeSlice", testOp(func(api reflect2.API) interface{} {
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valType := api.TypeOf([]interface{}{}).(reflect2.SliceType)
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obj := valType.MakeSlice(5, 10)
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(*obj.(*[]interface{}))[0] = 100
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(*obj.(*[]interface{}))[4] = 20
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return obj
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}))
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t.Run("SetIndex", testOp(func(api reflect2.API) interface{} {
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obj := []interface{}{1, nil}
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valType := api.TypeOf(obj).(reflect2.SliceType)
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elem0 := interface{}(100)
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valType.SetIndex(&obj, 0, &elem0)
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elem1 := interface{}(20)
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valType.SetIndex(&obj, 1, &elem1)
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return obj
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}))
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t.Run("UnsafeSetIndex", test.Case(func(ctx context.Context) {
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obj := []interface{}{1, 2}
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valType := reflect2.TypeOf(obj).(reflect2.SliceType)
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var elem0 interface{} = 100
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valType.UnsafeSetIndex(reflect2.PtrOf(obj), 0, unsafe.Pointer(&elem0))
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var elem1 interface{} = 10
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valType.UnsafeSetIndex(reflect2.PtrOf(obj), 1, unsafe.Pointer(&elem1))
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must.Equal([]interface{}{100, 10}, obj)
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}))
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t.Run("GetIndex", testOp(func(api reflect2.API) interface{} {
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obj := []interface{}{1, nil}
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valType := api.TypeOf(obj).(reflect2.SliceType)
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return []interface{}{
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valType.GetIndex(&obj, 0),
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valType.GetIndex(&obj, 1),
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}
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}))
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t.Run("UnsafeGetIndex", test.Case(func(ctx context.Context) {
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obj := []interface{}{1, nil}
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valType := reflect2.TypeOf(obj).(reflect2.SliceType)
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elem0 := valType.UnsafeGetIndex(unsafe.Pointer(&obj), 0)
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must.Equal(1, *(*interface{})(elem0))
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}))
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t.Run("Append", testOp(func(api reflect2.API) interface{} {
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obj := make([]interface{}, 2, 3)
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obj[0] = 1
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obj[1] = 2
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valType := api.TypeOf(obj).(reflect2.SliceType)
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elem1 := interface{}(3)
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valType.Append(&obj, &elem1)
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// will trigger grow
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elem2 := interface{}(4)
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valType.Append(&obj, &elem2)
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return obj
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}))
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t.Run("UnsafeAppend", test.Case(func(ctx context.Context) {
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obj := make([]interface{}, 2, 3)
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obj[0] = 1
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obj[1] = 2
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valType := reflect2.TypeOf(obj).(reflect2.SliceType)
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var elem2 interface{} = 3
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valType.UnsafeAppend(unsafe.Pointer(&obj), unsafe.Pointer(&elem2))
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var elem3 interface{} = 4
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valType.UnsafeAppend(unsafe.Pointer(&obj), unsafe.Pointer(&elem3))
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should.Equal([]interface{}{1, 2, 3, 4}, valType.UnsafeIndirect(unsafe.Pointer(&obj)))
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}))
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}
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