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// Copyright 2023 The Pigweed 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
//
// https://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 "pw_trace_tokenized/trace_service_pwpb.h"
#include "gtest/gtest.h"
#include "pw_chrono/system_clock.h"
#include "pw_rpc/pwpb/test_method_context.h"
#include "pw_stream/memory_stream.h"
#include "pw_trace/trace.h"
#include "pw_trace_tokenized/trace_tokenized.h"
namespace pw::trace {
class TraceServiceTest : public ::testing::Test {
public:
TraceServiceTest() {}
static constexpr uint32_t kTraceTransferHandlerId = 7;
};
TEST_F(TraceServiceTest, Start) {
auto& tracer = trace::GetTokenizedTracer();
std::array<std::byte, PW_TRACE_BUFFER_SIZE_BYTES> dest_buffer;
stream::MemoryWriter writer(dest_buffer);
PW_PWPB_TEST_METHOD_CONTEXT(TraceService, Start)
context(tracer, writer);
ASSERT_FALSE(tracer.IsEnabled());
ASSERT_EQ(context.call({}), OkStatus());
ASSERT_TRUE(tracer.IsEnabled());
// multiple calls to start are disallowed
ASSERT_EQ(context.call({}), Status::FailedPrecondition());
}
TEST_F(TraceServiceTest, Stop) {
auto& tracer = trace::GetTokenizedTracer();
std::array<std::byte, PW_TRACE_BUFFER_SIZE_BYTES> dest_buffer;
stream::MemoryWriter writer(dest_buffer);
PW_PWPB_TEST_METHOD_CONTEXT(TraceService, Stop)
context(tracer, writer);
context.service().SetTransferId(kTraceTransferHandlerId);
tracer.Enable(true);
PW_TRACE_INSTANT("TestTrace");
ASSERT_EQ(context.call({}), OkStatus());
ASSERT_FALSE(tracer.IsEnabled());
EXPECT_EQ(kTraceTransferHandlerId, context.response().file_id);
EXPECT_LT(0u, writer.bytes_written());
}
TEST_F(TraceServiceTest, StopNoTransferHandlerId) {
auto& tracer = trace::GetTokenizedTracer();
std::array<std::byte, PW_TRACE_BUFFER_SIZE_BYTES> dest_buffer;
stream::MemoryWriter writer(dest_buffer);
PW_PWPB_TEST_METHOD_CONTEXT(TraceService, Stop)
context(tracer, writer);
tracer.Enable(true);
PW_TRACE_INSTANT("TestTrace");
ASSERT_EQ(context.call({}), OkStatus());
ASSERT_FALSE(tracer.IsEnabled());
EXPECT_FALSE(context.response().file_id.has_value());
EXPECT_LT(0u, writer.bytes_written());
}
TEST_F(TraceServiceTest, StopNotStarted) {
auto& tracer = trace::GetTokenizedTracer();
std::array<std::byte, PW_TRACE_BUFFER_SIZE_BYTES> dest_buffer;
stream::MemoryWriter writer(dest_buffer);
PW_PWPB_TEST_METHOD_CONTEXT(TraceService, Stop)
context(tracer, writer);
// stopping while tracing is disabled results in FailedPrecondition
ASSERT_EQ(context.call({}), Status::FailedPrecondition());
}
TEST_F(TraceServiceTest, StopNoData) {
auto& tracer = trace::GetTokenizedTracer();
std::array<std::byte, PW_TRACE_BUFFER_SIZE_BYTES> dest_buffer;
stream::MemoryWriter writer(dest_buffer);
PW_PWPB_TEST_METHOD_CONTEXT(TraceService, Stop)
context(tracer, writer);
tracer.Enable(true);
// stopping with no trace data results in Unavailable
ASSERT_EQ(context.call({}), Status::Unavailable());
}
TEST_F(TraceServiceTest, GetClockParameters) {
auto& tracer = trace::GetTokenizedTracer();
std::array<std::byte, PW_TRACE_BUFFER_SIZE_BYTES> dest_buffer;
stream::MemoryWriter writer(dest_buffer);
PW_PWPB_TEST_METHOD_CONTEXT(TraceService, GetClockParameters)
context(tracer, writer);
ASSERT_EQ(context.call({}), OkStatus());
EXPECT_EQ(PW_CHRONO_SYSTEM_CLOCK_PERIOD_SECONDS_NUMERATOR,
context.response().clock_parameters.tick_period_seconds_numerator);
EXPECT_EQ(
PW_CHRONO_SYSTEM_CLOCK_PERIOD_SECONDS_DENOMINATOR,
context.response().clock_parameters.tick_period_seconds_denominator);
EXPECT_EQ(
static_cast<int32_t>(chrono::SystemClock::epoch),
static_cast<int32_t>(*context.response().clock_parameters.epoch_type));
}
} // namespace pw::trace
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