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Basic unit tests for PointerUnion

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188933 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie 2013-08-21 21:30:23 +00:00
parent dd778b230e
commit 296ca41b2d
3 changed files with 66 additions and 1 deletions
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2
include/llvm/ADT/PointerUnion.h
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@ -72,7 +72,7 @@ namespace llvm {
/// printf("%d %d", P.is<int*>(), P.is<float*>()); // prints "1 0"
/// X = P.get<int*>(); // ok.
/// Y = P.get<float*>(); // runtime assertion failure.
/// Z = P.get<double*>(); // runtime assertion failure (regardless of tag)
/// Z = P.get<double*>(); // compile time failure.
/// P = (float*)0;
/// Y = P.get<float*>(); // ok.
/// X = P.get<int*>(); // runtime assertion failure.

1
unittests/ADT/CMakeLists.txt
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@ -21,6 +21,7 @@ set(ADTSources
MapVectorTest.cpp
OptionalTest.cpp
PackedVectorTest.cpp
PointerUnionTest.cpp
SCCIteratorTest.cpp
SmallPtrSetTest.cpp
SmallStringTest.cpp

64
unittests/ADT/PointerUnionTest.cpp Normal file
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@ -0,0 +1,64 @@
//===- 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;
// Test fixture
class PointerUnionTest : public testing::Test {
};
float f = 3.14f;
int i = 42;
const PU a(&f);
const PU b(&i);
const PU n;
TEST_F(PointerUnionTest, Comparison) {
EXPECT_TRUE(a != b);
EXPECT_FALSE(a == b);
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);
}
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*)0);
}
} // end anonymous namespace