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/*******************************************************************\
Module: Unit tests for constant_abstract_valuet::meet
Author: Jez Higgins.
\*******************************************************************/
#include <util/arith_tools.h>
#include <util/bitvector_types.h>
#include <util/namespace.h>
#include <util/symbol_table.h>
#include <analyses/variable-sensitivity/abstract_environment.h>
#include <analyses/variable-sensitivity/variable_sensitivity_object_factory.h>
// NOLINTNEXTLINE(whitespace/line_length)
#include <analyses/variable-sensitivity/constant_abstract_value.h> // IWYU pragma: keep
// NOLINTNEXTLINE(whitespace/line_length)
#include <analyses/variable-sensitivity/interval_abstract_value.h> // IWYU pragma: keep
// NOLINTNEXTLINE(whitespace/line_length)
#include <analyses/variable-sensitivity/value_set_abstract_object.h> // IWYU pragma: keep
#include <analyses/variable-sensitivity/variable_sensitivity_test_helpers.h>
#include <testing-utils/use_catch.h>
static std::shared_ptr<const constant_abstract_valuet>
meet(abstract_object_pointert const &op1, abstract_object_pointert const &op2)
{
auto result = abstract_objectt::meet(op1, op2);
return as_constant(result.object);
}
static void THEN_BOTTOM(std::shared_ptr<const constant_abstract_valuet> &result)
{
THEN("result is BOTTOM")
{
EXPECT_BOTTOM(result);
}
}
static void THEN_TOP(std::shared_ptr<const constant_abstract_valuet> &result)
{
THEN("result is TOP")
{
EXPECT_TOP(result);
}
}
static void THEN_ONE(std::shared_ptr<const constant_abstract_valuet> &result)
{
THEN("result is 1")
{
const typet type = signedbv_typet(32);
const exprt val1 = from_integer(1, type);
EXPECT(result, val1);
}
}
SCENARIO(
"meet constant_abstract_value",
"[core][analyses][variable-sensitivity][constant_abstract_value][meet]")
{
const typet type = signedbv_typet(32);
const exprt val0 = from_integer(0, type);
const exprt val1 = from_integer(1, type);
const exprt val2 = from_integer(2, type);
auto config = vsd_configt::constant_domain();
config.context_tracking.data_dependency_context = false;
config.context_tracking.last_write_context = false;
auto object_factory =
variable_sensitivity_object_factoryt::configured_with(config);
abstract_environmentt environment{object_factory};
environment.make_top();
symbol_tablet symbol_table;
namespacet ns(symbol_table);
GIVEN("meeting two constants")
{
WHEN("meeting 1 with 1")
{
auto op1 = make_constant(val1, environment, ns);
auto op2 = make_constant(val1, environment, ns);
auto result = meet(op1, op2);
THEN_ONE(result);
}
WHEN("meeting 1 with 2")
{
auto op1 = make_constant(val1, environment, ns);
auto op2 = make_constant(val2, environment, ns);
auto result = meet(op1, op2);
THEN_BOTTOM(result);
}
WHEN("meeting 1 with TOP")
{
auto op1 = make_constant(val1, environment, ns);
auto top2 = make_top_constant();
auto result = meet(op1, top2);
THEN_ONE(result);
}
WHEN("meeting 1 with BOTTOM")
{
auto op1 = make_constant(val1, environment, ns);
auto bottom2 = make_bottom_constant();
auto result = meet(op1, bottom2);
THEN_BOTTOM(result);
}
WHEN("meeting TOP with 1")
{
auto top1 = make_top_constant();
auto op2 = make_constant(val1, environment, ns);
auto result = meet(top1, op2);
THEN_ONE(result);
}
WHEN("meeting TOP with TOP")
{
auto top1 = make_top_constant();
auto top2 = make_top_constant();
auto result = meet(top1, top2);
THEN_TOP(result);
}
WHEN("meeting TOP with BOTTOM")
{
auto top1 = make_top_constant();
auto bottom2 = make_bottom_constant();
auto result = meet(top1, bottom2);
THEN_BOTTOM(result);
}
WHEN("meeting BOTTOM with 1")
{
auto bottom1 = make_bottom_constant();
auto op2 = make_constant(val1, environment, ns);
auto result = meet(bottom1, op2);
THEN_BOTTOM(result);
}
WHEN("meeting BOTTOM with TOP")
{
auto bottom1 = make_bottom_constant();
auto top2 = make_top_constant();
auto result = meet(bottom1, top2);
THEN_BOTTOM(result);
}
WHEN("meeting BOTTOM with BOTTOM")
{
auto bottom1 = make_bottom_constant();
auto bottom2 = make_bottom_constant();
auto result = meet(bottom1, bottom2);
THEN_BOTTOM(result);
}
}
GIVEN("meeting a constant and an interval")
{
WHEN("meeting 1 with [1, 1]")
{
auto op1 = make_constant(val1, environment, ns);
auto op2 = make_interval(val1, val1, environment, ns);
auto result = meet(op1, op2);
THEN_ONE(result);
}
WHEN("meeting 1 with [1, 2]")
{
auto op1 = make_constant(val1, environment, ns);
auto op2 = make_interval(val1, val2, environment, ns);
auto result = meet(op1, op2);
THEN_ONE(result);
}
WHEN("meeting 1 with [0, 2]")
{
auto op1 = make_constant(val1, environment, ns);
auto op2 = make_interval(val0, val2, environment, ns);
auto result = meet(op1, op2);
THEN_ONE(result);
}
WHEN("meeting 1 with [2, 2]")
{
auto op1 = make_constant(val1, environment, ns);
auto op2 = make_interval(val2, val2, environment, ns);
auto result = meet(op1, op2);
THEN_BOTTOM(result);
}
WHEN("meeting BOTTOM with [1, 1]")
{
auto op1 = make_bottom_constant();
auto op2 = make_interval(val1, val1, environment, ns);
auto result = meet(op1, op2);
THEN_BOTTOM(result);
}
WHEN("meeting BOTTOM with [1, 2]")
{
auto op1 = make_bottom_constant();
auto op2 = make_interval(val1, val2, environment, ns);
auto result = meet(op1, op2);
THEN_BOTTOM(result);
}
}
GIVEN("meeting a constant and a value set")
{
WHEN("meeting 1 with { 1 }")
{
auto op1 = make_constant(val1, environment, ns);
auto op2 = make_value_set(val1, environment, ns);
auto result = meet(op1, op2);
THEN_ONE(result);
}
WHEN("meeting 1 with { 2 }")
{
auto op1 = make_constant(val1, environment, ns);
auto op2 = make_value_set(val2, environment, ns);
auto result = meet(op1, op2);
THEN_BOTTOM(result);
}
WHEN("meeting 1 with { 1, 2 }")
{
auto op1 = make_constant(val1, environment, ns);
auto op2 = make_value_set({val1, val2}, environment, ns);
auto result = meet(op1, op2);
THEN_ONE(result);
}
WHEN("meeting 1 with { 0, 2 }")
{
auto op1 = make_constant(val1, environment, ns);
auto op2 = make_value_set({val0, val2}, environment, ns);
auto result = meet(op1, op2);
THEN_ONE(result);
}
WHEN("meeting 1 with { [ 1, 1 ] }")
{
auto op1 = make_constant(val1, environment, ns);
auto op2 =
make_value_set(constant_interval_exprt(val1, val1), environment, ns);
auto result = meet(op1, op2);
THEN_ONE(result);
}
WHEN("meeting 1 with { 1, [1, 1] }")
{
auto op1 = make_constant(val1, environment, ns);
auto op2 = make_value_set(
{val1, constant_interval_exprt(val1, val1)}, environment, ns);
auto result = meet(op1, op2);
THEN_ONE(result);
}
WHEN("meeting 1 with { [ 2, 2 ] }")
{
auto op1 = make_constant(val1, environment, ns);
auto op2 =
make_value_set(constant_interval_exprt(val2, val2), environment, ns);
auto result = meet(op1, op2);
THEN_BOTTOM(result);
}
WHEN("meeting 1 with { [ 1, 2 ] }")
{
auto op1 = make_constant(val1, environment, ns);
auto op2 =
make_value_set(constant_interval_exprt(val1, val2), environment, ns);
auto result = meet(op1, op2);
THEN_ONE(result);
}
WHEN("meeting 1 with { 1, [ 1, 2 ] }")
{
auto op1 = make_constant(val1, environment, ns);
auto op2 = make_value_set(
{val1, constant_interval_exprt(val1, val2)}, environment, ns);
auto result = meet(op1, op2);
THEN_ONE(result);
}
WHEN("meeting BOTTOM with { 1 }")
{
auto op1 = make_bottom_constant();
auto op2 = make_value_set(val1, environment, ns);
auto result = meet(op1, op2);
THEN_BOTTOM(result);
}
WHEN("meeting BOTTOM with { 1, 2 }")
{
auto op1 = make_bottom_constant();
auto op2 = make_value_set({val1, val2}, environment, ns);
auto result = meet(op1, op2);
THEN_BOTTOM(result);
}
WHEN("meeting BOTTOM with { [ 1, 1 ] }")
{
auto op1 = make_bottom_constant();
auto op2 =
make_value_set(constant_interval_exprt(val1, val1), environment, ns);
auto result = meet(op1, op2);
THEN_BOTTOM(result);
}
WHEN("meeting BOTTOM with { [ 1, 2 ] }")
{
auto op1 = make_bottom_constant();
auto op2 =
make_value_set(constant_interval_exprt(val1, val2), environment, ns);
auto result = meet(op1, op2);
THEN_BOTTOM(result);
}
WHEN("meeting BOTTOM with { 1, [ 1, 2 ] }")
{
auto op1 = make_bottom_constant();
auto op2 = make_value_set(
{val1, constant_interval_exprt(val1, val2)}, environment, ns);
auto result = meet(op1, op2);
THEN_BOTTOM(result);
}
}
}
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