1 //===- llvm/unittest/ADT/PointerUnionTest.cpp - Optional unit tests -------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "gtest/gtest.h" 11 #include "llvm/ADT/PointerUnion.h" 12 using namespace llvm; 13 14 namespace { 15 16 typedef PointerUnion<int *, float *> PU; 17 18 struct PointerUnionTest : public testing::Test { 19 float f; 20 int i; 21 22 PU a, b, c, n; 23 24 PointerUnionTest() : f(3.14f), i(42), a(&f), b(&i), c(&i), n() {} 25 }; 26 27 TEST_F(PointerUnionTest, Comparison) { 28 EXPECT_TRUE(a == a); 29 EXPECT_FALSE(a != a); 30 EXPECT_TRUE(a != b); 31 EXPECT_FALSE(a == b); 32 EXPECT_TRUE(b == c); 33 EXPECT_FALSE(b != c); 34 EXPECT_TRUE(b != n); 35 EXPECT_FALSE(b == n); 36 } 37 38 TEST_F(PointerUnionTest, Null) { 39 EXPECT_FALSE(a.isNull()); 40 EXPECT_FALSE(b.isNull()); 41 EXPECT_TRUE(n.isNull()); 42 EXPECT_FALSE(!a); 43 EXPECT_FALSE(!b); 44 EXPECT_TRUE(!n); 45 // workaround an issue with EXPECT macros and explicit bool 46 EXPECT_TRUE((bool)a); 47 EXPECT_TRUE((bool)b); 48 EXPECT_FALSE(n); 49 50 EXPECT_NE(n, b); 51 EXPECT_EQ(b, c); 52 b = nullptr; 53 EXPECT_EQ(n, b); 54 EXPECT_NE(b, c); 55 } 56 57 TEST_F(PointerUnionTest, Is) { 58 EXPECT_FALSE(a.is<int *>()); 59 EXPECT_TRUE(a.is<float *>()); 60 EXPECT_TRUE(b.is<int *>()); 61 EXPECT_FALSE(b.is<float *>()); 62 EXPECT_TRUE(n.is<int *>()); 63 EXPECT_FALSE(n.is<float *>()); 64 } 65 66 TEST_F(PointerUnionTest, Get) { 67 EXPECT_EQ(a.get<float *>(), &f); 68 EXPECT_EQ(b.get<int *>(), &i); 69 EXPECT_EQ(n.get<int *>(), (int *)nullptr); 70 } 71 72 } // end anonymous namespace 73
