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125 lines
2.8 KiB
125 lines
2.8 KiB
7 months ago
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/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <memory>
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#include <gtest/gtest.h>
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#include <jni.h>
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#include <nativehelper/JniInvocation.h>
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namespace android {
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// Example test setup following googletest docs:
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//
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// template <typename Provider>
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// class TemplatedTest : public JNITestBase<Provider> {
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// ...
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// }
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//
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// typedef ::testing::Types<MockJNIProvider> Providers;
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// TYPED_TEST_CASE(TemplatedTest, Providers);
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//
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// TYPED_TEST() {
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// // Test code. Use "this->" to access TemplatedTest members.
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// }
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// Provider is a concept that must follow this structure:
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//
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// class JNIProvider {
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// public:
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// JNIProvider();
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//
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// void SetUp();
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// JNIEnv* CreateJNIEnv();
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//
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// void DestroyJNIEnv(JNIEnv* env);
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// void TearDown();
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// }
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template <typename Provider, typename Test = ::testing::Test>
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class JNITestBase : public Test {
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protected:
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JNITestBase() : provider_(), env_(nullptr), java_vm_(nullptr) {
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}
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void SetUp() override {
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Test::SetUp();
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provider_.SetUp();
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env_ = provider_.CreateJNIEnv();
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ASSERT_TRUE(env_ != nullptr);
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}
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void TearDown() override {
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provider_->DestroyJNIEnv(env_);
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provider_->TearDown();
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Test::TearDown();
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}
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protected:
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Provider provider_;
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JNIEnv* env_;
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JavaVM* java_vm_;
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};
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// A mockable implementation of the Provider concept. It is the responsibility
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// of the test to stub out any needed functions (all function pointers will be
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// null initially).
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//
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// TODO: Consider googlemock.
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class MockJNIProvider {
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public:
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MockJNIProvider() {
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}
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void SetUp() {
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// Nothing to here.
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}
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// TODO: Spawn threads to allow more envs?
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JNIEnv* CreateJNIEnv() {
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return CreateMockedJNIEnv().release();
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}
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void DestroyJNIEnv(JNIEnv* env) {
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delete env->functions;
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delete env;
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}
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void TearDown() {
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// Nothing to do here.
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}
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protected:
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std::unique_ptr<JNIEnv> CreateMockedJNIEnv() {
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JNINativeInterface* inf = new JNINativeInterface();
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memset(inf, 0, sizeof(JNINativeInterface));
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std::unique_ptr<JNIEnv> ret(new JNIEnv{0});
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ret->functions = inf;
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return ret;
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}
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};
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} // namespace android
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