xgboost/tests/cpp/common/test_monitor.cc
Jiaming Yuan f0064c07ab
Refactor configuration [Part II]. (#4577)
* Refactor configuration [Part II].

* General changes:
** Remove `Init` methods to avoid ambiguity.
** Remove `Configure(std::map<>)` to avoid redundant copying and prepare for
   parameter validation. (`std::vector` is returned from `InitAllowUnknown`).
** Add name to tree updaters for easier debugging.

* Learner changes:
** Make `LearnerImpl` the only source of configuration.

    All configurations are stored and carried out by `LearnerImpl::Configure()`.

** Remove booster in C API.

    Originally kept for "compatibility reason", but did not state why.  So here
    we just remove it.

** Add a `metric_names_` field in `LearnerImpl`.
** Remove `LazyInit`.  Configuration will always be lazy.
** Run `Configure` before every iteration.

* Predictor changes:
** Allocate both cpu and gpu predictor.
** Remove cpu_predictor from gpu_predictor.

    `GBTree` is now used to dispatch the predictor.

** Remove some GPU Predictor tests.

* IO

No IO changes.  The binary model format stability is tested by comparing
hashing value of save models between two commits
2019-07-20 08:34:56 -04:00

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#include <gtest/gtest.h>
#include <xgboost/logging.h>
#include <string>
#include "../../../src/common/timer.h"
namespace xgboost {
namespace common {
TEST(Monitor, Logging) {
auto run_monitor =
[]() {
Monitor monitor_;
monitor_.Init("Monitor test");
monitor_.Start("basic");
monitor_.Stop("basic");
};
Args args = {std::make_pair("verbosity", "3")};
ConsoleLogger::Configure(args);
testing::internal::CaptureStderr();
run_monitor();
std::string output = testing::internal::GetCapturedStderr();
ASSERT_NE(output.find("Monitor"), std::string::npos);
// Monitor only prints messages when set to DEBUG.
args = {std::make_pair("verbosity", "2")};
ConsoleLogger::Configure(args);
testing::internal::CaptureStderr();
run_monitor();
output = testing::internal::GetCapturedStderr();
ASSERT_EQ(output.size(), 0);
}
} // namespace common
} // namespace xgboost