217 lines
6.5 KiB
C++
217 lines
6.5 KiB
C++
/*
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* Copyright (C) 2020 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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#include <binder/IPCThreadState.h>
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#include <binder/Parcel.h>
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#include <binder/Status.h>
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#include <cutils/ashmem.h>
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#include <gtest/gtest.h>
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using android::BBinder;
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using android::IBinder;
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using android::IPCThreadState;
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using android::OK;
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using android::Parcel;
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using android::sp;
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using android::status_t;
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using android::String16;
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using android::String8;
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using android::binder::Status;
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TEST(Parcel, NonNullTerminatedString8) {
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String8 kTestString = String8("test-is-good");
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// write non-null terminated string
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Parcel p;
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p.writeString8(kTestString);
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p.setDataPosition(0);
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// BAD! assumption of wire format for test
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// write over length of string
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p.writeInt32(kTestString.size() - 2);
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p.setDataPosition(0);
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String8 output;
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EXPECT_NE(OK, p.readString8(&output));
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EXPECT_EQ(output.size(), 0);
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}
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TEST(Parcel, NonNullTerminatedString16) {
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String16 kTestString = String16("test-is-good");
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// write non-null terminated string
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Parcel p;
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p.writeString16(kTestString);
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p.setDataPosition(0);
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// BAD! assumption of wire format for test
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// write over length of string
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p.writeInt32(kTestString.size() - 2);
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p.setDataPosition(0);
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String16 output;
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EXPECT_NE(OK, p.readString16(&output));
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EXPECT_EQ(output.size(), 0);
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}
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TEST(Parcel, EnforceNoDataAvail) {
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const int32_t kTestInt = 42;
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const String8 kTestString = String8("test-is-good");
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Parcel p;
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p.writeInt32(kTestInt);
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p.writeString8(kTestString);
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p.setDataPosition(0);
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EXPECT_EQ(kTestInt, p.readInt32());
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EXPECT_EQ(p.enforceNoDataAvail().exceptionCode(), Status::Exception::EX_BAD_PARCELABLE);
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EXPECT_EQ(kTestString, p.readString8());
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EXPECT_EQ(p.enforceNoDataAvail().exceptionCode(), Status::Exception::EX_NONE);
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}
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TEST(Parcel, DebugReadAllBinders) {
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sp<IBinder> binder1 = sp<BBinder>::make();
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sp<IBinder> binder2 = sp<BBinder>::make();
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Parcel p;
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p.writeInt32(4);
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p.writeStrongBinder(binder1);
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p.writeStrongBinder(nullptr);
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p.writeInt32(4);
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p.writeStrongBinder(binder2);
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p.writeInt32(4);
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auto ret = p.debugReadAllStrongBinders();
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ASSERT_EQ(ret.size(), 2);
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EXPECT_EQ(ret[0], binder1);
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EXPECT_EQ(ret[1], binder2);
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}
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TEST(Parcel, DebugReadAllFds) {
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Parcel p;
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p.writeInt32(4);
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p.writeFileDescriptor(STDOUT_FILENO, false /*takeOwnership*/);
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p.writeInt32(4);
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p.writeFileDescriptor(STDIN_FILENO, false /*takeOwnership*/);
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p.writeInt32(4);
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auto ret = p.debugReadAllFileDescriptors();
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ASSERT_EQ(ret.size(), 2);
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EXPECT_EQ(ret[0], STDOUT_FILENO);
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EXPECT_EQ(ret[1], STDIN_FILENO);
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}
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// Tests a second operation results in a parcel at the same location as it
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// started.
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void parcelOpSameLength(const std::function<void(Parcel*)>& a, const std::function<void(Parcel*)>& b) {
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Parcel p;
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a(&p);
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size_t end = p.dataPosition();
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p.setDataPosition(0);
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b(&p);
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EXPECT_EQ(end, p.dataPosition());
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}
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TEST(Parcel, InverseInterfaceToken) {
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const String16 token = String16("asdf");
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parcelOpSameLength([&] (Parcel* p) {
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p->writeInterfaceToken(token);
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}, [&] (Parcel* p) {
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EXPECT_TRUE(p->enforceInterface(token, IPCThreadState::self()));
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});
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}
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TEST(Parcel, Utf8FromUtf16Read) {
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const char* token = "asdf";
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parcelOpSameLength([&] (Parcel* p) {
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p->writeString16(String16(token));
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}, [&] (Parcel* p) {
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std::string s;
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EXPECT_EQ(OK, p->readUtf8FromUtf16(&s));
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EXPECT_EQ(token, s);
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});
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}
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TEST(Parcel, Utf8AsUtf16Write) {
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std::string token = "asdf";
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parcelOpSameLength([&] (Parcel* p) {
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p->writeUtf8AsUtf16(token);
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}, [&] (Parcel* p) {
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String16 s;
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EXPECT_EQ(OK, p->readString16(&s));
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EXPECT_EQ(s, String16(token.c_str()));
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});
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}
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template <typename T>
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using readFunc = status_t (Parcel::*)(T* out) const;
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template <typename T>
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using writeFunc = status_t (Parcel::*)(const T& in);
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template <typename T>
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using copyWriteFunc = status_t (Parcel::*)(T in);
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template <typename T, typename WRITE_FUNC>
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void readWriteInverse(std::vector<T>&& ts, readFunc<T> r, WRITE_FUNC w) {
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for (const T& value : ts) {
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parcelOpSameLength([&] (Parcel* p) {
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(*p.*w)(value);
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}, [&] (Parcel* p) {
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T outValue;
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EXPECT_EQ(OK, (*p.*r)(&outValue));
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EXPECT_EQ(value, outValue);
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});
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}
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}
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template <typename T>
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void readWriteInverse(std::vector<T>&& ts, readFunc<T> r, writeFunc<T> w) {
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readWriteInverse<T, writeFunc<T>>(std::move(ts), r, w);
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}
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template <typename T>
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void readWriteInverse(std::vector<T>&& ts, readFunc<T> r, copyWriteFunc<T> w) {
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readWriteInverse<T, copyWriteFunc<T>>(std::move(ts), r, w);
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}
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#define TEST_READ_WRITE_INVERSE(type, name, ...) \
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TEST(Parcel, Inverse##name) { \
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readWriteInverse<type>(__VA_ARGS__, &Parcel::read##name, &Parcel::write##name); \
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}
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TEST_READ_WRITE_INVERSE(int32_t, Int32, {-2, -1, 0, 1, 2});
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TEST_READ_WRITE_INVERSE(uint32_t, Uint32, {0, 1, 2});
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TEST_READ_WRITE_INVERSE(int64_t, Int64, {-2, -1, 0, 1, 2});
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TEST_READ_WRITE_INVERSE(uint64_t, Uint64, {0, 1, 2});
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TEST_READ_WRITE_INVERSE(float, Float, {-1.0f, 0.0f, 3.14f});
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TEST_READ_WRITE_INVERSE(double, Double, {-1.0, 0.0, 3.14});
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TEST_READ_WRITE_INVERSE(bool, Bool, {true, false});
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TEST_READ_WRITE_INVERSE(char16_t, Char, {u'a', u'\0'});
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TEST_READ_WRITE_INVERSE(int8_t, Byte, {-1, 0, 1});
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TEST_READ_WRITE_INVERSE(String8, String8, {String8(), String8("a"), String8("asdf")});
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TEST_READ_WRITE_INVERSE(String16, String16, {String16(), String16("a"), String16("asdf")});
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TEST(Parcel, GetOpenAshmemSize) {
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constexpr size_t kSize = 1024;
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constexpr size_t kCount = 3;
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Parcel p;
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for (size_t i = 0; i < kCount; i++) {
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int fd = ashmem_create_region("test-getOpenAshmemSize", kSize);
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ASSERT_GE(fd, 0);
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ASSERT_EQ(OK, p.writeFileDescriptor(fd, true /* take ownership */));
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ASSERT_EQ((kSize * (i + 1)), p.getOpenAshmemSize());
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}
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}
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