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//===- llvm/unittest/ADT/PointerUnionTest.cpp - Optional unit tests -------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "gtest/gtest.h"
#include "llvm/ADT/PointerUnion.h"
using namespace llvm;
namespace {
typedef PointerUnion<int *, float *> PU;
struct PointerUnionTest : public testing::Test {
float f;
int i;
PU a, b, c, n;
PointerUnionTest() : f(3.14f), i(42), a(&f), b(&i), c(&i), n() {}
};
TEST_F(PointerUnionTest, Comparison) {
EXPECT_TRUE(a == a);
EXPECT_FALSE(a != a);
EXPECT_TRUE(a != b);
EXPECT_FALSE(a == b);
EXPECT_TRUE(b == c);
EXPECT_FALSE(b != c);
EXPECT_TRUE(b != n);
EXPECT_FALSE(b == n);
}
TEST_F(PointerUnionTest, Null) {
EXPECT_FALSE(a.isNull());
EXPECT_FALSE(b.isNull());
EXPECT_TRUE(n.isNull());
EXPECT_FALSE(!a);
EXPECT_FALSE(!b);
EXPECT_TRUE(!n);
// workaround an issue with EXPECT macros and explicit bool
EXPECT_TRUE((bool)a);
EXPECT_TRUE((bool)b);
EXPECT_FALSE(n);
EXPECT_NE(n, b);
EXPECT_EQ(b, c);
b = nullptr;
EXPECT_EQ(n, b);
EXPECT_NE(b, c);
}
TEST_F(PointerUnionTest, Is) {
EXPECT_FALSE(a.is<int *>());
EXPECT_TRUE(a.is<float *>());
EXPECT_TRUE(b.is<int *>());
EXPECT_FALSE(b.is<float *>());
EXPECT_TRUE(n.is<int *>());
EXPECT_FALSE(n.is<float *>());
}
TEST_F(PointerUnionTest, Get) {
EXPECT_EQ(a.get<float *>(), &f);
EXPECT_EQ(b.get<int *>(), &i);
EXPECT_EQ(n.get<int *>(), (int *)nullptr);
}
} // end anonymous namespace
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