| //===- llvm/unittest/ADT/PointerUnionTest.cpp - Optional unit tests -------===// |
| // |
| // 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 "llvm/ADT/PointerUnion.h" |
| #include "gtest/gtest.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 |