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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/fuchsia/scoped_service_binding.h"
#include <lib/sys/cpp/component_context.h>
#include <lib/sys/cpp/outgoing_directory.h>
#include <lib/sys/cpp/service_directory.h>
#include "base/fuchsia/process_context.h"
#include "base/fuchsia/test_component_context_for_process.h"
#include "base/fuchsia/test_interface_impl.h"
#include "base/run_loop.h"
#include "base/test/bind.h"
#include "base/test/task_environment.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
class ScopedServiceBindingTest : public testing::Test {
protected:
ScopedServiceBindingTest() = default;
~ScopedServiceBindingTest() override = default;
const base::test::SingleThreadTaskEnvironment task_environment_{
base::test::SingleThreadTaskEnvironment::MainThreadType::IO};
TestComponentContextForProcess test_context_;
TestInterfaceImpl test_service_;
};
// Verifies that ScopedServiceBinding allows connection more than once.
TEST_F(ScopedServiceBindingTest, ConnectTwice) {
ScopedServiceBinding<testfidl::TestInterface> binding(
ComponentContextForProcess()->outgoing().get(), &test_service_);
auto stub =
test_context_.published_services()->Connect<testfidl::TestInterface>();
auto stub2 =
test_context_.published_services()->Connect<testfidl::TestInterface>();
EXPECT_EQ(VerifyTestInterface(stub), ZX_OK);
EXPECT_EQ(VerifyTestInterface(stub2), ZX_OK);
}
// Verifies that ScopedServiceBinding allows connection more than once.
TEST_F(ScopedServiceBindingTest, ConnectTwiceNewName) {
const char kInterfaceName[] = "fuchsia.TestInterface2";
ScopedServiceBinding<testfidl::TestInterface> new_service_binding(
ComponentContextForProcess()->outgoing().get(), &test_service_,
kInterfaceName);
testfidl::TestInterfacePtr stub, stub2;
test_context_.published_services()->Connect(kInterfaceName,
stub.NewRequest().TakeChannel());
test_context_.published_services()->Connect(kInterfaceName,
stub2.NewRequest().TakeChannel());
EXPECT_EQ(VerifyTestInterface(stub), ZX_OK);
EXPECT_EQ(VerifyTestInterface(stub2), ZX_OK);
}
// Verify that we can publish a debug service.
TEST_F(ScopedServiceBindingTest, ConnectDebugService) {
vfs::PseudoDir* const debug_dir =
ComponentContextForProcess()->outgoing()->debug_dir();
// Publish the test service to the "debug" directory.
ScopedServiceBinding<testfidl::TestInterface> debug_service_binding(
debug_dir, &test_service_);
// Connect a ServiceDirectory to the "debug" subdirectory.
fidl::InterfaceHandle<fuchsia::io::Directory> debug_handle;
debug_dir->Serve(fuchsia_io::wire::kPermReadable,
fidl::ServerEnd<fuchsia_io::Directory>(
debug_handle.NewRequest().TakeChannel()));
sys::ServiceDirectory debug_directory(std::move(debug_handle));
// Attempt to connect via the "debug" directory.
auto debug_stub = debug_directory.Connect<testfidl::TestInterface>();
EXPECT_EQ(VerifyTestInterface(debug_stub), ZX_OK);
// Verify that the service does not appear in the outgoing service directory.
auto release_stub =
test_context_.published_services()->Connect<testfidl::TestInterface>();
EXPECT_EQ(VerifyTestInterface(release_stub), ZX_ERR_NOT_FOUND);
}
// Verifies that ScopedSingleClientServiceBinding allows a different name.
TEST_F(ScopedServiceBindingTest, SingleClientConnectNewName) {
const char kInterfaceName[] = "fuchsia.TestInterface2";
ScopedSingleClientServiceBinding<testfidl::TestInterface> binding(
ComponentContextForProcess()->outgoing().get(), &test_service_,
kInterfaceName);
testfidl::TestInterfacePtr stub;
test_context_.published_services()->Connect(kInterfaceName,
stub.NewRequest().TakeChannel());
EXPECT_EQ(VerifyTestInterface(stub), ZX_OK);
}
// Verify that if we connect twice to a prefer-new bound service, the existing
// connection gets closed.
TEST_F(ScopedServiceBindingTest, SingleClientPreferNew) {
ScopedSingleClientServiceBinding<testfidl::TestInterface,
ScopedServiceBindingPolicy::kPreferNew>
binding(ComponentContextForProcess()->outgoing().get(), &test_service_);
// Connect the first client, and verify that it is functional.
auto existing_client =
test_context_.published_services()->Connect<testfidl::TestInterface>();
EXPECT_EQ(VerifyTestInterface(existing_client), ZX_OK);
// Connect the second client, so the existing one should be disconnected and
// the new should be functional.
auto new_client =
test_context_.published_services()->Connect<testfidl::TestInterface>();
RunLoop().RunUntilIdle();
EXPECT_FALSE(existing_client);
EXPECT_EQ(VerifyTestInterface(new_client), ZX_OK);
}
// Verify that if we connect twice to a prefer-existing bound service, the new
// connection gets closed.
TEST_F(ScopedServiceBindingTest, SingleClientPreferExisting) {
ScopedSingleClientServiceBinding<testfidl::TestInterface,
ScopedServiceBindingPolicy::kPreferExisting>
binding(ComponentContextForProcess()->outgoing().get(), &test_service_);
// Connect the first client, and verify that it is functional.
auto existing_client =
test_context_.published_services()->Connect<testfidl::TestInterface>();
EXPECT_EQ(VerifyTestInterface(existing_client), ZX_OK);
// Connect the second client, then verify that the it gets closed and the
// existing one remains functional.
auto new_client =
test_context_.published_services()->Connect<testfidl::TestInterface>();
RunLoop().RunUntilIdle();
EXPECT_FALSE(new_client);
EXPECT_EQ(VerifyTestInterface(existing_client), ZX_OK);
}
// Verify that the default single-client binding policy is prefer-new.
TEST_F(ScopedServiceBindingTest, SingleClientDefaultIsPreferNew) {
ScopedSingleClientServiceBinding<testfidl::TestInterface> binding(
ComponentContextForProcess()->outgoing().get(), &test_service_);
// Connect the first client, and verify that it is functional.
auto existing_client =
test_context_.published_services()->Connect<testfidl::TestInterface>();
EXPECT_EQ(VerifyTestInterface(existing_client), ZX_OK);
// Connect the second client, so the existing one should be disconnected and
// the new should be functional.
auto new_client =
test_context_.published_services()->Connect<testfidl::TestInterface>();
RunLoop().RunUntilIdle();
EXPECT_FALSE(existing_client);
EXPECT_EQ(VerifyTestInterface(new_client), ZX_OK);
}
// Verify that single-client bindings support publishing to a PseudoDir.
TEST_F(ScopedServiceBindingTest, SingleClientPublishToPseudoDir) {
vfs::PseudoDir* const debug_dir =
ComponentContextForProcess()->outgoing()->debug_dir();
ScopedSingleClientServiceBinding<testfidl::TestInterface> binding(
debug_dir, &test_service_);
// Connect a ServiceDirectory to the "debug" subdirectory.
fidl::InterfaceHandle<fuchsia::io::Directory> debug_handle;
debug_dir->Serve(fuchsia_io::wire::kPermReadable,
fidl::ServerEnd<fuchsia_io::Directory>(
debug_handle.NewRequest().TakeChannel()));
sys::ServiceDirectory debug_directory(std::move(debug_handle));
// Attempt to connect via the "debug" directory.
auto debug_stub = debug_directory.Connect<testfidl::TestInterface>();
EXPECT_EQ(VerifyTestInterface(debug_stub), ZX_OK);
// Verify that the service does not appear in the outgoing service directory.
auto release_stub =
test_context_.published_services()->Connect<testfidl::TestInterface>();
EXPECT_EQ(VerifyTestInterface(release_stub), ZX_ERR_NOT_FOUND);
}
TEST_F(ScopedServiceBindingTest, SingleBindingSetOnLastClientCallback) {
ScopedSingleClientServiceBinding<testfidl::TestInterface>
single_service_binding(ComponentContextForProcess()->outgoing().get(),
&test_service_);
base::RunLoop run_loop;
single_service_binding.SetOnLastClientCallback(run_loop.QuitClosure());
auto current_client =
test_context_.published_services()->Connect<testfidl::TestInterface>();
EXPECT_EQ(VerifyTestInterface(current_client), ZX_OK);
current_client = nullptr;
run_loop.Run();
}
// Test the kConnectOnce option for ScopedSingleClientServiceBinding properly
// stops publishing the service after a first disconnect.
TEST_F(ScopedServiceBindingTest, ConnectOnce_OnlyFirstConnectionSucceeds) {
ScopedSingleClientServiceBinding<testfidl::TestInterface,
ScopedServiceBindingPolicy::kConnectOnce>
binding(ComponentContextForProcess()->outgoing().get(), &test_service_);
// Connect the first client, and verify that it is functional.
auto existing_client =
test_context_.published_services()->Connect<testfidl::TestInterface>();
EXPECT_EQ(VerifyTestInterface(existing_client), ZX_OK);
// Connect the second client, then verify that it gets closed and the existing
// one remains functional.
auto new_client =
test_context_.published_services()->Connect<testfidl::TestInterface>();
RunLoop().RunUntilIdle();
EXPECT_FALSE(new_client);
EXPECT_EQ(VerifyTestInterface(existing_client), ZX_OK);
// Disconnect the first client.
existing_client.Unbind().TakeChannel().reset();
RunLoop().RunUntilIdle();
// Re-connect the second client, then verify that it gets closed.
new_client =
test_context_.published_services()->Connect<testfidl::TestInterface>();
RunLoop().RunUntilIdle();
EXPECT_FALSE(new_client);
}
// Test the last client callback is called every time the number of active
// clients reaches 0.
TEST_F(ScopedServiceBindingTest, MultipleLastClientCallback) {
ScopedServiceBinding<testfidl::TestInterface> binding(
ComponentContextForProcess()->outgoing().get(), &test_service_);
int disconnect_count = 0;
binding.SetOnLastClientCallback(
BindLambdaForTesting([&disconnect_count] { ++disconnect_count; }));
// Connect a client, verify it is functional.
auto stub =
test_context_.published_services()->Connect<testfidl::TestInterface>();
EXPECT_EQ(VerifyTestInterface(stub), ZX_OK);
// Disconnect the client, the callback should have been called once.
stub = nullptr;
RunLoop().RunUntilIdle();
EXPECT_EQ(disconnect_count, 1);
// Re-connect the client, verify it is functional.
stub = test_context_.published_services()->Connect<testfidl::TestInterface>();
EXPECT_EQ(VerifyTestInterface(stub), ZX_OK);
// Disconnect the client, the callback should have been called a second time.
stub = nullptr;
RunLoop().RunUntilIdle();
EXPECT_EQ(disconnect_count, 2);
}
} // namespace base
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