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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/vespalib/data/memory.h>
#include <vespa/vespalib/data/writable_memory.h>
#include <vespa/vespalib/data/input.h>
#include <vespa/vespalib/data/output.h>
#include <vespa/vespalib/data/simple_buffer.h>
#include <vespa/vespalib/data/slime/slime.h>
#include <vespa/vespalib/util/size_literals.h>
#include <vespa/vespalib/process/process.h>
#include <functional>
namespace vespalib::eval::test {
/**
* Simple adapter making stdin act as an Input.
**/
class StdIn : public Input {
private:
bool _eof = false;
SimpleBuffer _input;
public:
~StdIn() {}
Memory obtain() override;
Input &evict(size_t bytes) override;
};
/**
* Simple adapter making stdout act as an Output.
**/
class StdOut : public Output {
private:
SimpleBuffer _output;
public:
~StdOut() {}
WritableMemory reserve(size_t bytes) override;
Output &commit(size_t bytes) override;
};
/**
* A command run as a child process that acts as a server reading json
* from stdin and writing json to stdout.
**/
class ServerCmd {
private:
Process _child;
vespalib::string _basename;
bool _closed;
bool _exited;
int _exit_code;
void maybe_close();
void maybe_exit();
void dump_string(const char *prefix, const vespalib::string &str);
void dump_message(const char *prefix, const Slime &slime);
public:
struct capture_stderr_tag{};
ServerCmd(vespalib::string cmd);
ServerCmd(vespalib::string cmd, capture_stderr_tag);
~ServerCmd();
Slime invoke(const Slime &req);
vespalib::string write_then_read_all(const vespalib::string &input);
int shutdown();
};
/**
* Read one line at a time from an input
**/
class LineReader {
private:
Input &_input;
public:
LineReader(Input &input) : _input(input) {}
bool read_line(vespalib::string &line);
};
/**
* Skip whitespaces from the input and return true if eof was reached.
**/
bool look_for_eof(Input &input);
/**
* Read from the input until eof is reached (data is discarded).
**/
void read_until_eof(Input &input);
/**
* Write a slime structure as compact json with a trailing newline.
**/
void write_compact(const Slime &slime, Output &out);
/**
* Write tests to the given output. Will write a minimal summary when
* destructed. The current test will be flushed to the output when a
* new test is created or right before writing the summary. The
* 'create' function will return an object. A test may be any object
* containing at least one field, but a test may not contain the
* 'num_tests' field (to avoid confusion with the trailing summary)
**/
class TestWriter {
private:
Output &_out;
Slime _test;
size_t _num_tests;
void maybe_write_test();
public:
TestWriter(Output &output);
slime::Cursor &create();
~TestWriter();
};
/**
* Reads all tests from 'in' as well as the trailing summary. The
* provided 'handle_test' function will be called for each test and
* the 'handle_summary' function will be called once at the end. This
* function also does some minor consistency checking.
**/
void for_each_test(Input &in,
const std::function<void(Slime&)> &handle_test,
const std::function<void(Slime&)> &handle_summary);
} // namespace vespalib::eval::test
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