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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/testkit/test_kit.h>
#include <vespa/eval/eval/fast_value.h>
#include <vespa/eval/eval/function.h>
#include <vespa/eval/eval/tensor_spec.h>
#include <vespa/eval/eval/tensor_function.h>
#include <vespa/eval/eval/operation.h>
#include <vespa/eval/eval/interpreted_function.h>
#include <vespa/eval/eval/compile_tensor_function.h>
#include <vespa/eval/eval/test/eval_spec.h>
#include <vespa/eval/eval/basic_nodes.h>
#include <vespa/eval/eval/simple_value.h>
#include <vespa/vespalib/util/stringfmt.h>
#include <vespa/vespalib/util/stash.h>
#include <vespa/vespalib/test/insertion_operators.h>
#include <iostream>
using namespace vespalib::eval;
using vespalib::Stash;
//-----------------------------------------------------------------------------
struct MyEvalTest : test::EvalSpec::EvalTest {
size_t pass_cnt = 0;
size_t fail_cnt = 0;
bool print_pass = false;
bool print_fail = false;
~MyEvalTest() override;
virtual void next_expression(const std::vector<vespalib::string> ¶m_names,
const vespalib::string &expression) override
{
auto function = Function::parse(param_names, expression);
ASSERT_TRUE(!function->has_error());
bool is_supported = true;
bool has_issues = InterpretedFunction::detect_issues(*function);
if (is_supported == has_issues) {
const char *supported_str = is_supported ? "supported" : "not supported";
const char *issues_str = has_issues ? "has issues" : "does not have issues";
print_fail && fprintf(stderr, "expression %s is %s, but %s\n",
expression.c_str(), supported_str, issues_str);
++fail_cnt;
}
}
virtual void handle_case(const std::vector<vespalib::string> ¶m_names,
const std::vector<double> ¶m_values,
const vespalib::string &expression,
double expected_result) override
{
auto function = Function::parse(param_names, expression);
ASSERT_TRUE(!function->has_error());
bool is_supported = true;
bool has_issues = InterpretedFunction::detect_issues(*function);
if (is_supported && !has_issues) {
vespalib::string desc = as_string(param_names, param_values, expression);
SimpleParams params(param_values);
verify_result(SimpleValueBuilderFactory::get(), *function, "[simple] "+desc, params, expected_result);
verify_result(FastValueBuilderFactory::get(), *function, "[prod] "+desc, params, expected_result);
}
}
void report_result(bool is_double, double result, double expect, const vespalib::string &desc)
{
if (is_double && is_same(expect, result)) {
print_pass && fprintf(stderr, "verifying: %s -> %g ... PASS\n",
desc.c_str(), expect);
++pass_cnt;
} else {
print_fail && fprintf(stderr, "verifying: %s -> %g ... FAIL: got %g\n",
desc.c_str(), expect, result);
++fail_cnt;
}
}
void verify_result(const ValueBuilderFactory &factory,
const Function &function,
const vespalib::string &description,
const SimpleParams ¶ms,
double expected_result)
{
auto node_types = NodeTypes(function, std::vector<ValueType>(params.params.size(), ValueType::double_type()));
InterpretedFunction ifun(factory, function, node_types);
InterpretedFunction::Context ictx(ifun);
const Value &result_value = ifun.eval(ictx, params);
report_result(result_value.type().is_double(), result_value.as_double(), expected_result, description);
}
};
MyEvalTest::~MyEvalTest() = default;
TEST_FF("require that interpreted evaluation passes all conformance tests", MyEvalTest(), test::EvalSpec()) {
f1.print_fail = true;
f2.add_all_cases();
f2.each_case(f1);
EXPECT_GREATER(f1.pass_cnt, 1000u);
EXPECT_EQUAL(0u, f1.fail_cnt);
}
//-----------------------------------------------------------------------------
TEST("require that invalid function is tagged with error") {
std::vector<vespalib::string> params({"x", "y", "z", "w"});
auto function = Function::parse(params, "x & y");
EXPECT_TRUE(function->has_error());
}
//-----------------------------------------------------------------------------
size_t count_ifs(const vespalib::string &expr, std::initializer_list<double> params_in) {
auto fun = Function::parse(expr);
auto node_types = NodeTypes(*fun, std::vector<ValueType>(params_in.size(), ValueType::double_type()));
InterpretedFunction ifun(SimpleValueBuilderFactory::get(), *fun, node_types);
InterpretedFunction::Context ctx(ifun);
SimpleParams params(params_in);
ifun.eval(ctx, params);
return ctx.if_cnt();
}
TEST("require that if_cnt in eval context is updated correctly") {
EXPECT_EQUAL(0u, count_ifs("1", {}));
EXPECT_EQUAL(1u, count_ifs("if(a<10,if(a<9,if(a<8,if(a<7,5,4),3),2),1)", {10}));
EXPECT_EQUAL(2u, count_ifs("if(a<10,if(a<9,if(a<8,if(a<7,5,4),3),2),1)", {9}));
EXPECT_EQUAL(3u, count_ifs("if(a<10,if(a<9,if(a<8,if(a<7,5,4),3),2),1)", {8}));
EXPECT_EQUAL(4u, count_ifs("if(a<10,if(a<9,if(a<8,if(a<7,5,4),3),2),1)", {7}));
EXPECT_EQUAL(4u, count_ifs("if(a<10,if(a<9,if(a<8,if(a<7,5,4),3),2),1)", {6}));
}
//-----------------------------------------------------------------------------
TEST("require that interpreted function instructions have expected size") {
EXPECT_EQUAL(sizeof(InterpretedFunction::Instruction), 16u);
}
TEST("require that function pointers can be passed as instruction parameters") {
EXPECT_EQUAL(sizeof(&operation::Add::f), sizeof(uint64_t));
}
TEST("require that basic addition works") {
auto function = Function::parse("a+10");
auto node_types = NodeTypes(*function, {ValueType::double_type()});
InterpretedFunction interpreted(SimpleValueBuilderFactory::get(), *function, node_types);
InterpretedFunction::Context ctx(interpreted);
SimpleParams params_20({20});
SimpleParams params_40({40});
EXPECT_EQUAL(interpreted.eval(ctx, params_20).as_double(), 30.0);
EXPECT_EQUAL(interpreted.eval(ctx, params_40).as_double(), 50.0);
}
//-----------------------------------------------------------------------------
TEST("require that functions with non-compilable lambdas cannot be interpreted") {
auto good_map = Function::parse("map(a,f(x)(x+1))");
auto good_join = Function::parse("join(a,b,f(x,y)(x+y))");
auto bad_map = Function::parse("map(a,f(x)(map(x,f(i)(i+1))))");
auto bad_join = Function::parse("join(a,b,f(x,y)(join(x,y,f(i,j)(i+j))))");
for (const Function *good: {good_map.get(), good_join.get()}) {
if (!EXPECT_TRUE(!good->has_error())) {
fprintf(stderr, "parse error: %s\n", good->get_error().c_str());
}
EXPECT_TRUE(!InterpretedFunction::detect_issues(*good));
}
for (const Function *bad: {bad_map.get(), bad_join.get()}) {
if (!EXPECT_TRUE(!bad->has_error())) {
fprintf(stderr, "parse error: %s\n", bad->get_error().c_str());
}
EXPECT_TRUE(InterpretedFunction::detect_issues(*bad));
}
std::cerr << "Example function issues:" << std::endl
<< InterpretedFunction::detect_issues(*bad_join).list
<< std::endl;
}
//-----------------------------------------------------------------------------
TEST("require that compilation meta-data can be collected") {
Stash stash;
const auto &x2 = tensor_function::inject(ValueType::from_spec("tensor(x[2])"), 0, stash);
const auto &x3 = tensor_function::inject(ValueType::from_spec("tensor(x[3])"), 1, stash);
const auto &concat_x5 = tensor_function::concat(x3, x2, "x", stash);
const auto &x5 = tensor_function::inject(ValueType::from_spec("tensor(x[5])"), 2, stash);
const auto &mapped_x5 = tensor_function::map(x5, operation::Relu::f, stash);
const auto &flag = tensor_function::inject(ValueType::from_spec("double"), 0, stash);
const auto &root = tensor_function::if_node(flag, concat_x5, mapped_x5, stash);
CTFMetaData meta;
InterpretedFunction ifun(FastValueBuilderFactory::get(), root, &meta);
fprintf(stderr, "compilation meta-data:\n");
for (const auto &step: meta.steps) {
fprintf(stderr, " %s -> %s\n", step.class_name.c_str(), step.symbol_name.c_str());
}
}
//-----------------------------------------------------------------------------
TEST_MAIN() { TEST_RUN_ALL(); }
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