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/*
*
* Copyright 2017 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include "src/core/lib/transport/byte_stream.h"
#include <grpc/grpc.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include "src/core/lib/gpr/useful.h"
#include "src/core/lib/iomgr/exec_ctx.h"
#include "src/core/lib/slice/slice_internal.h"
#include "test/core/util/test_config.h"
#include <gtest/gtest.h>
namespace grpc_core {
namespace {
//
// SliceBufferByteStream tests
//
void NotCalledClosure(void* arg, grpc_error* error) { GPR_ASSERT(false); }
TEST(SliceBufferByteStream, Basic) {
grpc_core::ExecCtx exec_ctx;
// Create and populate slice buffer.
grpc_slice_buffer buffer;
grpc_slice_buffer_init(&buffer);
grpc_slice input[] = {
grpc_slice_from_static_string("foo"),
grpc_slice_from_static_string("bar"),
};
for (size_t i = 0; i < GPR_ARRAY_SIZE(input); ++i) {
grpc_slice_buffer_add(&buffer, input[i]);
}
// Create byte stream.
SliceBufferByteStream stream(&buffer, 0);
grpc_slice_buffer_destroy_internal(&buffer);
EXPECT_EQ(6U, stream.length());
grpc_closure closure;
GRPC_CLOSURE_INIT(&closure, NotCalledClosure, nullptr,
grpc_schedule_on_exec_ctx);
// Read each slice. Note that Next() always returns synchronously.
for (size_t i = 0; i < GPR_ARRAY_SIZE(input); ++i) {
ASSERT_TRUE(stream.Next(~(size_t)0, &closure));
grpc_slice output;
grpc_error* error = stream.Pull(&output);
EXPECT_TRUE(error == GRPC_ERROR_NONE);
EXPECT_TRUE(grpc_slice_eq(input[i], output));
grpc_slice_unref_internal(output);
}
// Clean up.
stream.Orphan();
}
TEST(SliceBufferByteStream, Shutdown) {
grpc_core::ExecCtx exec_ctx;
// Create and populate slice buffer.
grpc_slice_buffer buffer;
grpc_slice_buffer_init(&buffer);
grpc_slice input[] = {
grpc_slice_from_static_string("foo"),
grpc_slice_from_static_string("bar"),
};
for (size_t i = 0; i < GPR_ARRAY_SIZE(input); ++i) {
grpc_slice_buffer_add(&buffer, input[i]);
}
// Create byte stream.
SliceBufferByteStream stream(&buffer, 0);
grpc_slice_buffer_destroy_internal(&buffer);
EXPECT_EQ(6U, stream.length());
grpc_closure closure;
GRPC_CLOSURE_INIT(&closure, NotCalledClosure, nullptr,
grpc_schedule_on_exec_ctx);
// Read the first slice.
ASSERT_TRUE(stream.Next(~(size_t)0, &closure));
grpc_slice output;
grpc_error* error = stream.Pull(&output);
EXPECT_TRUE(error == GRPC_ERROR_NONE);
EXPECT_TRUE(grpc_slice_eq(input[0], output));
grpc_slice_unref_internal(output);
// Now shutdown.
grpc_error* shutdown_error =
GRPC_ERROR_CREATE_FROM_STATIC_STRING("shutdown error");
stream.Shutdown(GRPC_ERROR_REF(shutdown_error));
// After shutdown, the next pull() should return the error.
ASSERT_TRUE(stream.Next(~(size_t)0, &closure));
error = stream.Pull(&output);
EXPECT_TRUE(error == shutdown_error);
GRPC_ERROR_UNREF(error);
GRPC_ERROR_UNREF(shutdown_error);
// Clean up.
stream.Orphan();
}
//
// CachingByteStream tests
//
TEST(CachingByteStream, Basic) {
grpc_core::ExecCtx exec_ctx;
// Create and populate slice buffer byte stream.
grpc_slice_buffer buffer;
grpc_slice_buffer_init(&buffer);
grpc_slice input[] = {
grpc_slice_from_static_string("foo"),
grpc_slice_from_static_string("bar"),
};
for (size_t i = 0; i < GPR_ARRAY_SIZE(input); ++i) {
grpc_slice_buffer_add(&buffer, input[i]);
}
SliceBufferByteStream underlying_stream(&buffer, 0);
grpc_slice_buffer_destroy_internal(&buffer);
// Create cache and caching stream.
ByteStreamCache cache((OrphanablePtr<ByteStream>(&underlying_stream)));
ByteStreamCache::CachingByteStream stream(&cache);
grpc_closure closure;
GRPC_CLOSURE_INIT(&closure, NotCalledClosure, nullptr,
grpc_schedule_on_exec_ctx);
// Read each slice. Note that next() always returns synchronously,
// because the underlying byte stream always does.
for (size_t i = 0; i < GPR_ARRAY_SIZE(input); ++i) {
ASSERT_TRUE(stream.Next(~(size_t)0, &closure));
grpc_slice output;
grpc_error* error = stream.Pull(&output);
EXPECT_TRUE(error == GRPC_ERROR_NONE);
EXPECT_TRUE(grpc_slice_eq(input[i], output));
grpc_slice_unref_internal(output);
}
// Clean up.
stream.Orphan();
cache.Destroy();
}
TEST(CachingByteStream, Reset) {
grpc_core::ExecCtx exec_ctx;
// Create and populate slice buffer byte stream.
grpc_slice_buffer buffer;
grpc_slice_buffer_init(&buffer);
grpc_slice input[] = {
grpc_slice_from_static_string("foo"),
grpc_slice_from_static_string("bar"),
};
for (size_t i = 0; i < GPR_ARRAY_SIZE(input); ++i) {
grpc_slice_buffer_add(&buffer, input[i]);
}
SliceBufferByteStream underlying_stream(&buffer, 0);
grpc_slice_buffer_destroy_internal(&buffer);
// Create cache and caching stream.
ByteStreamCache cache((OrphanablePtr<ByteStream>(&underlying_stream)));
ByteStreamCache::CachingByteStream stream(&cache);
grpc_closure closure;
GRPC_CLOSURE_INIT(&closure, NotCalledClosure, nullptr,
grpc_schedule_on_exec_ctx);
// Read one slice.
ASSERT_TRUE(stream.Next(~(size_t)0, &closure));
grpc_slice output;
grpc_error* error = stream.Pull(&output);
EXPECT_TRUE(error == GRPC_ERROR_NONE);
EXPECT_TRUE(grpc_slice_eq(input[0], output));
grpc_slice_unref_internal(output);
// Reset the caching stream. The reads should start over from the
// first slice.
stream.Reset();
for (size_t i = 0; i < GPR_ARRAY_SIZE(input); ++i) {
ASSERT_TRUE(stream.Next(~(size_t)0, &closure));
error = stream.Pull(&output);
EXPECT_TRUE(error == GRPC_ERROR_NONE);
EXPECT_TRUE(grpc_slice_eq(input[i], output));
grpc_slice_unref_internal(output);
}
// Clean up.
stream.Orphan();
cache.Destroy();
}
TEST(CachingByteStream, SharedCache) {
grpc_core::ExecCtx exec_ctx;
// Create and populate slice buffer byte stream.
grpc_slice_buffer buffer;
grpc_slice_buffer_init(&buffer);
grpc_slice input[] = {
grpc_slice_from_static_string("foo"),
grpc_slice_from_static_string("bar"),
};
for (size_t i = 0; i < GPR_ARRAY_SIZE(input); ++i) {
grpc_slice_buffer_add(&buffer, input[i]);
}
SliceBufferByteStream underlying_stream(&buffer, 0);
grpc_slice_buffer_destroy_internal(&buffer);
// Create cache and two caching streams.
ByteStreamCache cache((OrphanablePtr<ByteStream>(&underlying_stream)));
ByteStreamCache::CachingByteStream stream1(&cache);
ByteStreamCache::CachingByteStream stream2(&cache);
grpc_closure closure;
GRPC_CLOSURE_INIT(&closure, NotCalledClosure, nullptr,
grpc_schedule_on_exec_ctx);
// Read one slice from stream1.
EXPECT_TRUE(stream1.Next(~(size_t)0, &closure));
grpc_slice output;
grpc_error* error = stream1.Pull(&output);
EXPECT_TRUE(error == GRPC_ERROR_NONE);
EXPECT_TRUE(grpc_slice_eq(input[0], output));
grpc_slice_unref_internal(output);
// Read all slices from stream2.
for (size_t i = 0; i < GPR_ARRAY_SIZE(input); ++i) {
EXPECT_TRUE(stream2.Next(~(size_t)0, &closure));
error = stream2.Pull(&output);
EXPECT_TRUE(error == GRPC_ERROR_NONE);
EXPECT_TRUE(grpc_slice_eq(input[i], output));
grpc_slice_unref_internal(output);
}
// Now read the second slice from stream1.
EXPECT_TRUE(stream1.Next(~(size_t)0, &closure));
error = stream1.Pull(&output);
EXPECT_TRUE(error == GRPC_ERROR_NONE);
EXPECT_TRUE(grpc_slice_eq(input[1], output));
grpc_slice_unref_internal(output);
// Clean up.
stream1.Orphan();
stream2.Orphan();
cache.Destroy();
}
} // namespace
} // namespace grpc_core
int main(int argc, char** argv) {
grpc_init();
grpc::testing::TestEnvironment env(argc, argv);
::testing::InitGoogleTest(&argc, argv);
int retval = RUN_ALL_TESTS();
grpc_shutdown();
return retval;
}
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