github.com/luchsh/agentlib.go@v0.0.0-20221115155834-ffd0caec4d72/jgo/jni_test.go (about) 1 // Copyright 2022 chuanshenglu@gmail.com 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 // http://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.\n\n 14 15 package jgo 16 17 import ( 18 "fmt" 19 "runtime" 20 "testing" 21 22 "github.com/ClarkGuan/jni" 23 "github.com/stretchr/testify/assert" 24 ) 25 26 var ( 27 vm jni.VM 28 env jni.Env // only for the creating thread 29 jvm *JavaVM 30 ) 31 32 // only create the VM once, spec does not support creating multiple VMs 33 func init() { 34 runtime.LockOSThread() 35 defer runtime.UnlockOSThread() 36 //vm, env = jniCreateJavaVM([]string{"-verbose:gc", "-check:jni", "-Djava.class.path=./testdata"}) 37 var err error 38 jvm, err = Exec([]string{"-verbose:gc", "-check:jni", "-Djava.class.path=./testdata"}) 39 if err != nil { 40 panic(fmt.Errorf("Failed to create JavaVM, err=%v", err)) 41 } 42 vm = jvm.jvm 43 env = jvm.jni 44 } 45 46 func TestGetCreatedJavaVMs(t *testing.T) { 47 vms := jniGetCreatedJavaVMs() 48 assert.Equal(t, len(vms), 1) 49 } 50 51 func TestFindClass(t *testing.T) { 52 JVM(vm).jniRun(func(env JniEnv) { 53 jni := env.raw() 54 clazz := jni.FindClass("Ljava/lang/Object;") 55 assert.NotZero(t, uintptr(clazz)) 56 }) 57 }