YT-19324: move YT provider to ydb/library/yql

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This commit has zero effect on all projects that depend on YQL.

The summary of changes:
- `yql/providers/yt -> ydb/library/yql/providers/yt `- the whole implementation of YT provider is moved into YDB code base for further export as a part of YT YQL plugin shared library;
- `yql/providers/stat/{expr_nodes,uploader} -> ydb/library/yql/providers/stat/{expr_nodes,uploader}` - a small interface without implementation and the description of stat expr nodes;
- `yql/core/extract_predicate/ut -> ydb/library/yql/core/extract_predicate/ut`;
- `yql/core/{ut,ut_common} -> ydb/library/yql/core/{ut,ut_common}`;
- `yql/core` is gone;
- `yql/library/url_preprocessing -> ydb/library/yql/core/url_preprocessing`.

**NB**: all new targets inside `ydb/` are under `IF (NOT CMAKE_EXPORT)` clause which disables them from open-source cmake generation and ya make build. They will be enabled in the subsequent commits.

1 files changed, 194 insertions, 0 deletions

diff --git a/yt/cpp/mapreduce/tests/yt_unittest_lib/yt_unittest_lib.h b/yt/cpp/mapreduce/tests/yt_unittest_lib/yt_unittest_lib.h
new file mode 100644
index 00000000000..37d9d501cd1
--- /dev/null
+++ b/yt/cpp/mapreduce/tests/yt_unittest_lib/yt_unittest_lib.h
@@ -0,0 +1,194 @@
+#pragma once
+
+#include <yt/cpp/mapreduce/interface/logging/logger.h>
+#include <yt/cpp/mapreduce/interface/client.h>
+
+#include <yt/cpp/mapreduce/interface/config.h>
+
+#include <library/cpp/yson/node/node_io.h>
+
+#include <util/generic/bt_exception.h>
+
+#include <util/datetime/base.h>
+
+////////////////////////////////////////////////////////////////////////////////
+
+template<>
+void Out<NYT::TNode>(IOutputStream& s, const NYT::TNode& node);
+
+template<>
+void Out<TGUID>(IOutputStream& s, const TGUID& guid);
+
+////////////////////////////////////////////////////////////////////////////////
+
+namespace NYT {
+namespace NTesting {
+
+////////////////////////////////////////////////////////////////////////////////
+
+IClientPtr CreateTestClient(TString proxy = "", const TCreateClientOptions& options = {});
+
+// Create map node by unique path in Cypress and return that path.
+TYPath CreateTestDirectory(const IClientBasePtr& client);
+
+TString GenerateRandomData(size_t size, ui64 seed = 42);
+
+TVector<TNode> ReadTable(const IClientBasePtr& client, const TString& tablePath);
+
+////////////////////////////////////////////////////////////////////////////////
+
+// TODO: should be removed, usages should be replaced with TConfigSaverGuard
+class TZeroWaitLockPollIntervalGuard
+{
+public:
+    TZeroWaitLockPollIntervalGuard();
+
+    ~TZeroWaitLockPollIntervalGuard();
+
+private:
+    TDuration OldWaitLockPollInterval_;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+
+class TConfigSaverGuard
+{
+public:
+    TConfigSaverGuard();
+    ~TConfigSaverGuard();
+
+private:
+    TConfig Config_;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+
+class TDebugMetricDiff
+{
+public:
+    TDebugMetricDiff(TString name);
+    ui64 GetTotal() const;
+
+private:
+    TString Name_;
+    ui64 InitialValue_;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+
+struct TOwningYaMRRow
+{
+    TString Key;
+    TString SubKey;
+    TString Value;
+
+    TOwningYaMRRow(const TYaMRRow& row = {});
+    TOwningYaMRRow(TString key, TString subKey, TString value);
+
+    operator TYaMRRow() const;
+};
+
+bool operator == (const TOwningYaMRRow& row1, const TOwningYaMRRow& row2);
+
+////////////////////////////////////////////////////////////////////////////////
+
+class TTestFixture
+{
+public:
+    explicit TTestFixture(const TCreateClientOptions& options = {});
+    ~TTestFixture();
+
+    // Return precreated client.
+    IClientPtr GetClient() const;
+
+    // Return newly created client. Useful for cases:
+    //  - when we want to have multiple clients objects;
+    //  - when we want to control to control destruction of client object;
+    IClientPtr CreateClient(const TCreateClientOptions& options = {}) const;
+
+    IClientPtr CreateClientForUser(const TString& user, TCreateClientOptions options = {});
+
+    TYPath GetWorkingDir() const;
+
+private:
+    TConfigSaverGuard ConfigGuard_;
+    IClientPtr Client_;
+    TYPath WorkingDir_;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+
+class TTabletFixture
+    : public TTestFixture
+{
+public:
+    TTabletFixture();
+
+private:
+    void WaitForTabletCell();
+};
+
+////////////////////////////////////////////////////////////////////////////////
+
+// Compares only columns and only "name" and "type" fields of columns.
+bool AreSchemasEqual(const TTableSchema& lhs, const TTableSchema& rhs);
+
+class TWaitFailedException
+    : public TWithBackTrace<yexception>
+{ };
+
+void WaitForPredicate(const std::function<bool()>& predicate, TDuration timeout = TDuration::Seconds(60));
+
+////////////////////////////////////////////////////////////////////////////////
+
+// Redirects all the LOG_* calls with the corresponding level to `stream`.
+// Moreover, the LOG_* calls are delegated to `oldLogger`.
+class TStreamTeeLogger
+    : public ILogger
+{
+public:
+    TStreamTeeLogger(ELevel cutLevel, IOutputStream* stream, ILoggerPtr oldLogger);
+    void Log(ELevel level, const ::TSourceLocation& sourceLocation, const char* format, va_list args) override;
+
+private:
+    ILoggerPtr OldLogger_;
+    IOutputStream* Stream_;
+    ELevel Level_;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+
+template <typename T>
+TString ToYson(const T& x)
+{
+    TNode result;
+    TNodeBuilder builder(&result);
+    Serialize(x, &builder);
+    return NodeToYsonString(result);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+} // namespace NTesting
+} // namespace NYT
+
+////////////////////////////////////////////////////////////////////////////////
+
+template <>
+void Out<NYT::NTesting::TOwningYaMRRow>(IOutputStream& out, const NYT::NTesting::TOwningYaMRRow& row);
+
+////////////////////////////////////////////////////////////////////////////////
+
+// for UNITTEST()
+#define ASSERT_SERIALIZABLES_EQUAL(a, b) \
+    UNIT_ASSERT_EQUAL_C(a, b, NYT::NTesting::ToYson(a) << " != " << NYT::NTesting::ToYson(b))
+
+#define ASSERT_SERIALIZABLES_UNEQUAL(a, b) \
+    UNIT_ASSERT_UNEQUAL_C(a, b, NYT::NTesting::ToYson(a) << " == " << NYT::NTesting::ToYson(b))
+
+// for GTEST()
+#define ASSERT_SERIALIZABLES_EQ(a, b) \
+    ASSERT_EQ(a, b) << NYT::NTesting::ToYson(a) << " != " << NYT::NTesting::ToYson(b)
+
+#define ASSERT_SERIALIZABLES_NE(a, b) \
+    ASSERT_NE(a, b) << NYT::NTesting::ToYson(a) << " == " << NYT::NTesting::ToYson(b)