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//===- unittests/Analysis/FlowSensitive/ValueTest.cpp ---===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "clang/Analysis/FlowSensitive/Value.h"
#include "clang/Analysis/FlowSensitive/Arena.h"
#include "clang/Analysis/FlowSensitive/StorageLocation.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include <memory>
namespace {
using namespace clang;
using namespace dataflow;
TEST(ValueTest, EquivalenceReflexive) {
IntegerValue V;
EXPECT_TRUE(areEquivalentValues(V, V));
}
TEST(ValueTest, DifferentIntegerValuesNotEquivalent) {
IntegerValue V1;
IntegerValue V2;
EXPECT_FALSE(areEquivalentValues(V1, V2));
}
TEST(ValueTest, AliasedPointersEquivalent) {
auto L = ScalarStorageLocation(QualType());
PointerValue V1(L);
PointerValue V2(L);
EXPECT_TRUE(areEquivalentValues(V1, V2));
EXPECT_TRUE(areEquivalentValues(V2, V1));
}
TEST(ValueTest, TopsEquivalent) {
Arena A;
TopBoolValue V1(A.makeAtomRef(Atom(0)));
TopBoolValue V2(A.makeAtomRef(Atom(1)));
EXPECT_TRUE(areEquivalentValues(V1, V2));
EXPECT_TRUE(areEquivalentValues(V2, V1));
}
// The framework does not (currently) consider equivalence for values with
// properties, leaving such to individual analyses.
TEST(ValueTest, ValuesWithSamePropsDifferent) {
Arena A;
TopBoolValue Prop(A.makeAtomRef(Atom(0)));
TopBoolValue V1(A.makeAtomRef(Atom(2)));
TopBoolValue V2(A.makeAtomRef(Atom(3)));
V1.setProperty("foo", Prop);
V2.setProperty("foo", Prop);
EXPECT_FALSE(areEquivalentValues(V1, V2));
EXPECT_FALSE(areEquivalentValues(V2, V1));
}
TEST(ValueTest, ValuesWithDifferentPropsDifferent) {
Arena A;
TopBoolValue Prop1(A.makeAtomRef(Atom(0)));
TopBoolValue Prop2(A.makeAtomRef(Atom(1)));
TopBoolValue V1(A.makeAtomRef(Atom(2)));
TopBoolValue V2(A.makeAtomRef(Atom(3)));
V1.setProperty("foo", Prop1);
V2.setProperty("bar", Prop2);
EXPECT_FALSE(areEquivalentValues(V1, V2));
EXPECT_FALSE(areEquivalentValues(V2, V1));
}
TEST(ValueTest, ValuesWithDifferentNumberPropsDifferent) {
Arena A;
TopBoolValue Prop(A.makeAtomRef(Atom(0)));
TopBoolValue V1(A.makeAtomRef(Atom(2)));
TopBoolValue V2(A.makeAtomRef(Atom(3)));
// Only set a property on `V1`.
V1.setProperty("foo", Prop);
EXPECT_FALSE(areEquivalentValues(V1, V2));
EXPECT_FALSE(areEquivalentValues(V2, V1));
}
TEST(ValueTest, DifferentKindsNotEquivalent) {
Arena A;
auto L = ScalarStorageLocation(QualType());
PointerValue V1(L);
TopBoolValue V2(A.makeAtomRef(Atom(0)));
EXPECT_FALSE(areEquivalentValues(V1, V2));
EXPECT_FALSE(areEquivalentValues(V2, V1));
}
TEST(ValueTest, NotAliasedPointersNotEquivalent) {
auto L1 = ScalarStorageLocation(QualType());
PointerValue V1(L1);
auto L2 = ScalarStorageLocation(QualType());
PointerValue V2(L2);
EXPECT_FALSE(areEquivalentValues(V1, V2));
EXPECT_FALSE(areEquivalentValues(V2, V1));
}
} // namespace
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