github.com/bytedance/sonic@v1.11.7-0.20240517092252-d2edb31b167b/internal/rt/stub_test.go (about) 1 // Copyright 2024 CloudWeGo Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package rt 16 17 import ( 18 "testing" 19 "unsafe" 20 ) 21 22 func TestGrowSlic(t *testing.T) { 23 et := UnpackEface(byte(0)).Type 24 n := make([]byte, 1, 1024) 25 println("n len:", len(n), "cap:", cap(n)) 26 v := GrowSlice(et, *(*GoSlice)(unsafe.Pointer(&n)), 1025) 27 println("v len:", v.Len, "cap:", v.Cap) 28 // according to go growslice rule, the next cap must be at most 1.5x of old.Cap 29 if v.Cap > 1536 { 30 t.Fatal(v.Cap) 31 } 32 }