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// Copyright 2017 Yahoo Holdings. 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/llvm/compile_cache.h>
#include <vespa/eval/eval/key_gen.h>
#include <vespa/eval/eval/test/eval_spec.h>
#include <set>
using namespace vespalib::eval;
//-----------------------------------------------------------------------------
TEST("require that parameter passing selection affects function key") {
EXPECT_NOT_EQUAL(gen_key(Function::parse("a+b"), PassParams::SEPARATE),
gen_key(Function::parse("a+b"), PassParams::ARRAY));
}
TEST("require that the number of parameters affects function key") {
EXPECT_NOT_EQUAL(gen_key(Function::parse({"a", "b"}, "a+b"), PassParams::SEPARATE),
gen_key(Function::parse({"a", "b", "c"}, "a+b"), PassParams::SEPARATE));
EXPECT_NOT_EQUAL(gen_key(Function::parse({"a", "b"}, "a+b"), PassParams::ARRAY),
gen_key(Function::parse({"a", "b", "c"}, "a+b"), PassParams::ARRAY));
}
TEST("require that implicit and explicit parameters give the same function key") {
EXPECT_EQUAL(gen_key(Function::parse({"a", "b"}, "a+b"), PassParams::SEPARATE),
gen_key(Function::parse("a+b"), PassParams::SEPARATE));
EXPECT_EQUAL(gen_key(Function::parse({"a", "b"}, "a+b"), PassParams::ARRAY),
gen_key(Function::parse("a+b"), PassParams::ARRAY));
}
TEST("require that symbol names does not affect function key") {
EXPECT_EQUAL(gen_key(Function::parse("a+b"), PassParams::SEPARATE),
gen_key(Function::parse("x+y"), PassParams::SEPARATE));
EXPECT_EQUAL(gen_key(Function::parse("a+b"), PassParams::ARRAY),
gen_key(Function::parse("x+y"), PassParams::ARRAY));
}
TEST("require that let bind names does not affect function key") {
EXPECT_EQUAL(gen_key(Function::parse("let(a,1,a+a)"), PassParams::SEPARATE),
gen_key(Function::parse("let(b,1,b+b)"), PassParams::SEPARATE));
EXPECT_EQUAL(gen_key(Function::parse("let(a,1,a+a)"), PassParams::ARRAY),
gen_key(Function::parse("let(b,1,b+b)"), PassParams::ARRAY));
}
TEST("require that different values give different function keys") {
EXPECT_NOT_EQUAL(gen_key(Function::parse("1"), PassParams::SEPARATE),
gen_key(Function::parse("2"), PassParams::SEPARATE));
EXPECT_NOT_EQUAL(gen_key(Function::parse("1"), PassParams::ARRAY),
gen_key(Function::parse("2"), PassParams::ARRAY));
}
TEST("require that different strings give different function keys") {
EXPECT_NOT_EQUAL(gen_key(Function::parse("\"a\""), PassParams::SEPARATE),
gen_key(Function::parse("\"b\""), PassParams::SEPARATE));
EXPECT_NOT_EQUAL(gen_key(Function::parse("\"a\""), PassParams::ARRAY),
gen_key(Function::parse("\"b\""), PassParams::ARRAY));
}
//-----------------------------------------------------------------------------
struct CheckKeys : test::EvalSpec::EvalTest {
bool failed = false;
std::set<vespalib::string> seen_keys;
bool check_key(const vespalib::string &key) {
bool seen = (seen_keys.count(key) > 0);
seen_keys.insert(key);
return seen;
}
virtual void next_expression(const std::vector<vespalib::string> ¶m_names,
const vespalib::string &expression) override
{
Function function = Function::parse(param_names, expression);
if (!CompiledFunction::detect_issues(function)) {
if (check_key(gen_key(function, PassParams::ARRAY)) ||
check_key(gen_key(function, PassParams::SEPARATE)) ||
check_key(gen_key(function, PassParams::LAZY)))
{
failed = true;
fprintf(stderr, "key collision for: %s\n", expression.c_str());
}
}
}
virtual void handle_case(const std::vector<vespalib::string> &,
const std::vector<double> &,
const vespalib::string &,
double) override {}
};
TEST_FF("require that all conformance expressions have different function keys",
CheckKeys(), test::EvalSpec())
{
f2.add_all_cases();
f2.each_case(f1);
EXPECT_TRUE(!f1.failed);
EXPECT_GREATER(f1.seen_keys.size(), 100u);
}
//-----------------------------------------------------------------------------
void verify_cache(size_t expect_cached, size_t expect_refs) {
EXPECT_EQUAL(expect_cached, CompileCache::num_cached());
EXPECT_EQUAL(expect_refs, CompileCache::count_refs());
}
TEST("require that cache is initially empty") {
TEST_DO(verify_cache(0, 0));
}
TEST("require that unused functions are evicted from the cache") {
CompileCache::Token::UP token_a = CompileCache::compile(Function::parse("x+y"), PassParams::ARRAY);
TEST_DO(verify_cache(1, 1));
token_a.reset();
TEST_DO(verify_cache(0, 0));
}
TEST("require that agents can have separate functions in the cache") {
CompileCache::Token::UP token_a = CompileCache::compile(Function::parse("x+y"), PassParams::ARRAY);
CompileCache::Token::UP token_b = CompileCache::compile(Function::parse("x*y"), PassParams::ARRAY);
TEST_DO(verify_cache(2, 2));
}
TEST("require that agents can share functions in the cache") {
CompileCache::Token::UP token_a = CompileCache::compile(Function::parse("x+y"), PassParams::ARRAY);
CompileCache::Token::UP token_b = CompileCache::compile(Function::parse("x+y"), PassParams::ARRAY);
TEST_DO(verify_cache(1, 2));
}
TEST("require that cache usage works") {
TEST_DO(verify_cache(0, 0));
CompileCache::Token::UP token_a = CompileCache::compile(Function::parse("x+y"), PassParams::SEPARATE);
EXPECT_EQUAL(5.0, token_a->get().get_function<2>()(2.0, 3.0));
TEST_DO(verify_cache(1, 1));
CompileCache::Token::UP token_b = CompileCache::compile(Function::parse("x*y"), PassParams::SEPARATE);
EXPECT_EQUAL(6.0, token_b->get().get_function<2>()(2.0, 3.0));
TEST_DO(verify_cache(2, 2));
CompileCache::Token::UP token_c = CompileCache::compile(Function::parse("x+y"), PassParams::SEPARATE);
EXPECT_EQUAL(5.0, token_c->get().get_function<2>()(2.0, 3.0));
TEST_DO(verify_cache(2, 3));
token_a.reset();
TEST_DO(verify_cache(2, 2));
token_b.reset();
TEST_DO(verify_cache(1, 1));
token_c.reset();
TEST_DO(verify_cache(0, 0));
}
//-----------------------------------------------------------------------------
TEST_MAIN() { TEST_RUN_ALL(); }
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