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/*******************************************************************\
Module: Unit tests for java_static_initializers
Author: Diffblue Ltd.
\*******************************************************************/
#include <util/arith_tools.h>
#include <util/json.h>
#include <util/symbol_table.h>
#include <goto-programs/goto_instruction_code.h>
#include <java_bytecode/ci_lazy_methods_needed.h>
#include <java_bytecode/code_with_references.h> // IWYU pragma: keep
#include <java_bytecode/java_static_initializers.h>
#include <java_bytecode/java_types.h>
#include <java_bytecode/java_utils.h>
#include <testing-utils/expr_query.h>
#include <testing-utils/use_catch.h>
SCENARIO("is_clinit_function", "[core][java_static_initializers]")
{
GIVEN("A function id that represents a clinit")
{
THEN("is_clinit_function should return true.")
{
const std::string input = "com.something.package.TestClass.<clinit>:()V";
REQUIRE(is_clinit_function(input));
}
}
GIVEN("A function id that does not represent a clinit")
{
THEN("is_clinit_function should return false.")
{
const std::string input =
"com.something.package.TestClass.<notclinit>:()V";
REQUIRE_FALSE(is_clinit_function(input));
}
}
}
SCENARIO(
"is_user_specified_clinit_function",
"[core][java_static_initializers]")
{
GIVEN("A function id that represents a user-specified clinit")
{
THEN("is_user_specified_clinit_function should return true.")
{
const std::string input =
"com.something.package.TestClass.<user_specified_clinit>";
REQUIRE(is_user_specified_clinit_function(input));
}
}
GIVEN("A function id that does not represent a user-specified clinit")
{
THEN("is_clinit_function should return false.")
{
const std::string input = "com.something.package.TestClass::not_it";
REQUIRE_FALSE(is_user_specified_clinit_function(input));
}
}
}
SCENARIO("get_user_specified_clinit_body", "[core][java_static_initializers]")
{
json_objectt static_values_json{};
symbol_tablet symbol_table;
const std::size_t max_user_array_length = 100;
std::unordered_map<std::string, object_creation_referencet> references;
std::unordered_multimap<irep_idt, symbolt> class_to_declared_symbols;
GIVEN(
"A class which has no entry in the JSON object but a clinit defined "
"in the symbol table")
{
symbolt clinit_symbol{"java::TestClass.<clinit>:()V", typet{}, ID_java};
symbol_table.insert(clinit_symbol);
const code_blockt clinit_body = get_user_specified_clinit_body(
"java::TestClass",
static_values_json,
symbol_table,
{},
max_user_array_length,
references,
class_to_declared_symbols);
THEN("User provided clinit body is composed of one call to clinit")
{
const exprt function_called =
make_query(clinit_body)[0].as<code_function_callt>().get().function();
REQUIRE(
make_query(function_called).as<symbol_exprt>().get().get_identifier() ==
clinit_symbol.name);
}
}
GIVEN("A class which has no entry in the JSON object and no clinit defined")
{
const auto clinit_body = get_user_specified_clinit_body(
"java::TestClass",
static_values_json,
symbol_table,
{},
max_user_array_length,
references,
class_to_declared_symbols);
THEN("User provided clinit body is empty")
{
REQUIRE(clinit_body == code_blockt{});
}
}
GIVEN(
"A class which has an entry in the JSON object but no clinit defined "
"in the symbol table")
{
static_values_json["TestClass"] = [] {
json_objectt entry{};
entry["field_name"] = json_numbert{"42"};
return entry;
}();
const code_blockt clinit_body = get_user_specified_clinit_body(
"java::TestClass",
static_values_json,
symbol_table,
{},
max_user_array_length,
references,
class_to_declared_symbols);
THEN("User provided clinit body is empty")
{
REQUIRE(clinit_body == code_blockt{});
}
}
GIVEN("A class which has a static number in the provided JSON")
{
static_values_json["TestClass"] = [] {
json_objectt entry{};
entry["field_name"] = json_numbert{"42"};
return entry;
}();
class_to_declared_symbols.emplace("java::TestClass", [] {
symbolt field_symbol{"field_name_for_codet", java_int_type(), ID_java};
field_symbol.base_name = "field_name";
field_symbol.is_static_lifetime = true;
return field_symbol;
}());
symbol_table.insert([] {
symbolt clinit_symbol{"java::TestClass.<clinit>:()V", typet{}, ID_java};
set_declaring_class(clinit_symbol, "java::TestClass");
return clinit_symbol;
}());
symbol_table.insert(symbolt{
"java::TestClass",
[] {
java_class_typet type;
type.components().emplace_back("field_name", java_int_type());
return type;
}(),
ID_java});
const auto clinit_body = get_user_specified_clinit_body(
"java::TestClass",
static_values_json,
symbol_table,
{},
max_user_array_length,
references,
class_to_declared_symbols);
THEN("User provided clinit body set the field to the given value")
{
auto assignment = make_query(clinit_body)[0].as<code_assignt>().get();
REQUIRE(
make_query(assignment.lhs())
.as<symbol_exprt>()
.get()
.get_identifier() == "field_name_for_codet");
REQUIRE(assignment.rhs() == from_integer(42, java_int_type()));
}
}
}
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