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/*******************************************************************\
Module: Unit tests for variable/sensitivity/abstract_object::index_range
Author: Jez Higgins, jez@jezuk.co.uk
\*******************************************************************/
#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/constant_abstract_value.h>
#include <analyses/variable-sensitivity/interval_abstract_value.h>
#include <analyses/variable-sensitivity/value_set_abstract_object.h>
#include <analyses/variable-sensitivity/variable_sensitivity_object_factory.h>
#include <testing-utils/use_catch.h>
#include "analyses/variable-sensitivity/variable_sensitivity_test_helpers.h"
SCENARIO(
"index_range for constant_abstract_values"
"[core][analyses][variable-sensitivity][constant_abstract_value][index_"
"range]")
{
auto type = signedbv_typet(32);
auto object_factory = variable_sensitivity_object_factoryt::configured_with(
vsd_configt::constant_domain());
abstract_environmentt env{object_factory};
env.make_top();
symbol_tablet symbol_table;
namespacet ns(symbol_table);
GIVEN("an integer constant has an index_range")
{
auto int_value = 99;
auto value_expr = from_integer(int_value, type);
auto value = make_constant(value_expr, env, ns);
auto range = value->index_range(ns);
THEN("range should have a value")
{
auto i = range.begin();
REQUIRE(i != range.end());
mp_integer index;
to_integer(to_constant_expr(*i), index);
REQUIRE(index == int_value);
++i;
REQUIRE(i == range.end());
}
THEN("iterator has a single value")
{
auto i = range.begin();
REQUIRE(i != range.end());
mp_integer index;
to_integer(to_constant_expr(*i), index);
REQUIRE(index == int_value);
++i;
REQUIRE(i == range.end());
}
}
GIVEN("a top constant's range is has a single nil expression")
{
auto value = make_top_constant();
auto range = value->index_range(ns);
THEN("range should have a nil expr")
{
auto i = range.begin();
REQUIRE(i != range.end());
REQUIRE(*i == nil_exprt());
++i;
REQUIRE(i == range.end());
}
}
}
SCENARIO(
"index_range for interval_abstract_values"
"[core][analyses][variable-sensitivity][interval_abstract_value][index_"
"range]")
{
auto object_factory = variable_sensitivity_object_factoryt::configured_with(
vsd_configt::intervals());
abstract_environmentt env{object_factory};
env.make_top();
symbol_tablet symbol_table;
namespacet ns(symbol_table);
auto type = signedbv_typet(32);
GIVEN("a top intervals's range is empty")
{
auto value = make_top_interval();
auto range = value->index_range(ns);
THEN("range should be empty")
{
REQUIRE(range.begin() == range.end());
}
}
GIVEN("a single-value interval's index_range has a single element")
{
auto int_value = 99;
auto value_expr = from_integer(int_value, type);
auto value = make_interval(value_expr, value_expr, env, ns);
auto range = value->index_range(ns);
THEN("range should have a single value")
{
auto i = range.begin();
REQUIRE(i != range.end());
mp_integer index;
to_integer(to_constant_expr(*i), index);
REQUIRE(index == int_value);
++i;
REQUIRE(i == range.end());
}
}
GIVEN("a [99,100] interval's index_range has two elements")
{
auto int_value = 99;
auto lower = from_integer(int_value, type);
auto upper = from_integer(int_value + 1, type);
auto value = make_interval(lower, upper, env, ns);
auto range = value->index_range(ns);
THEN("range should have two values")
{
auto i = range.begin();
REQUIRE(i != range.end());
mp_integer index;
to_integer(to_constant_expr(*i), index);
REQUIRE(index == int_value);
++i;
REQUIRE(i != range.end());
to_integer(to_constant_expr(*i), index);
REQUIRE(index == int_value + 1);
++i;
REQUIRE(i == range.end());
}
}
GIVEN("a [99,102] interval's index_range has four elements")
{
auto int_value = 99;
auto lower = from_integer(int_value, type);
auto upper = from_integer(int_value + 3, type);
auto value = make_interval(lower, upper, env, ns);
auto range = value->index_range(ns);
THEN("range has four values")
{
int i = 0;
for(const auto &e : range)
{
mp_integer index;
to_integer(to_constant_expr(e), index);
REQUIRE(index == int_value + i);
++i;
}
REQUIRE(i == 4);
}
}
}
SCENARIO(
"index_range for value_set_abstract_values"
"[core][analyses][variable-sensitivity][value_set_abstract_value][index_"
"range]")
{
auto object_factory = variable_sensitivity_object_factoryt::configured_with(
vsd_configt::intervals());
abstract_environmentt env{object_factory};
env.make_top();
symbol_tablet symbol_table;
namespacet ns(symbol_table);
auto type = signedbv_typet(32);
GIVEN("a TOP value_set is empty")
{
auto value = make_top_value_set();
auto range = value->index_range(ns);
THEN("range should have a nil expr")
{
auto i = range.begin();
REQUIRE(i != range.end());
REQUIRE(*i == nil_exprt());
++i;
REQUIRE(i == range.end());
}
}
GIVEN("a value_set { 99, 100, 101, 102 } index_range has four elements")
{
auto int_value = 99;
auto _99 = from_integer(int_value, type);
auto _100 = from_integer(100, type);
auto _101 = from_integer(101, type);
auto _102 = from_integer(102, type);
auto value = make_value_set({_99, _100, _101, _102}, env, ns);
auto range = value->index_range(ns);
THEN("range has four values")
{
auto values = std::vector<exprt>();
for(const auto &e : range)
values.push_back(to_constant_expr(e));
REQUIRE(values.size() == 4);
EXPECT(values, {_99, _100, _101, _102});
}
}
GIVEN("a value_set { [99, 102] } index_range has four elements")
{
auto int_value = 99;
auto _99 = from_integer(int_value, type);
auto _100 = from_integer(100, type);
auto _101 = from_integer(101, type);
auto _102 = from_integer(102, type);
auto _99_102 = constant_interval_exprt(_99, _102);
auto value = make_value_set({_99_102}, env, ns);
auto range = value->index_range(ns);
THEN("range has four values")
{
auto values = std::vector<exprt>();
for(const auto &e : range)
values.push_back(to_constant_expr(e));
REQUIRE(values.size() == 4);
EXPECT(values, {_99, _100, _101, _102});
}
}
GIVEN("a value_set { 99, 100, [101, 102] } index_range has four elements")
{
auto int_value = 99;
auto _99 = from_integer(int_value, type);
auto _100 = from_integer(100, type);
auto _101 = from_integer(101, type);
auto _102 = from_integer(102, type);
auto _101_102 = constant_interval_exprt(_101, _102);
auto value = make_value_set({_99, _101_102, _100}, env, ns);
auto range = value->index_range(ns);
THEN("range has four values")
{
auto values = std::vector<exprt>();
for(const auto &e : range)
values.push_back(to_constant_expr(e));
REQUIRE(values.size() == 4);
EXPECT(values, {_99, _100, _101, _102});
}
}
GIVEN("a value_set { [99, 102], 100, 101 } index_range has four elements")
{
auto int_value = 99;
auto _99 = from_integer(int_value, type);
auto _100 = from_integer(100, type);
auto _101 = from_integer(101, type);
auto _102 = from_integer(102, type);
auto _99_102 = constant_interval_exprt(_99, _102);
auto value = make_value_set({_99_102, _100, _101}, env, ns);
auto range = value->index_range(ns);
THEN("range has four values")
{
auto values = std::vector<exprt>();
for(const auto &e : range)
values.push_back(to_constant_expr(e));
REQUIRE(values.size() == 4);
EXPECT(values, {_99, _100, _101, _102});
}
}
}
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