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67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
//===---------- llvm/unittest/Support/Casting.cpp - Casting tests --------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Support/Debug.h"
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#define DEBUG_CAST_OPERATORS
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#include "llvm/Support/Casting.h"
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#include "gtest/gtest.h"
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#include <cstdlib>
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using namespace llvm;
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namespace {
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const foo *null_foo = NULL;
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extern bar &B1;
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extern const bar *B2;
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// test various configurations of const
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const bar &B3 = B1;
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const bar *const B4 = B2;
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TEST(CastingTest, isa) {
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EXPECT_TRUE(isa<foo>(B1));
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EXPECT_TRUE(isa<foo>(B2));
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EXPECT_TRUE(isa<foo>(B3));
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EXPECT_TRUE(isa<foo>(B4));
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}
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TEST(CastingTest, cast) {
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foo &F1 = cast<foo>(B1);
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EXPECT_NE(&F1, null_foo);
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const foo *F3 = cast<foo>(B2);
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EXPECT_NE(F3, null_foo);
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const foo *F4 = cast<foo>(B2);
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EXPECT_NE(F4, null_foo);
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const foo &F8 = cast<foo>(B3);
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EXPECT_NE(&F8, null_foo);
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const foo *F9 = cast<foo>(B4);
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EXPECT_NE(F9, null_foo);
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foo *F10 = cast<foo>(fub());
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EXPECT_EQ(F10, null_foo);
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}
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TEST(CastingTest, cast_or_null) {
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const foo *F11 = cast_or_null<foo>(B2);
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EXPECT_NE(F11, null_foo);
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const foo *F12 = cast_or_null<foo>(B2);
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EXPECT_NE(F12, null_foo);
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const foo *F13 = cast_or_null<foo>(B4);
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EXPECT_NE(F13, null_foo);
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const foo *F14 = cast_or_null<foo>(fub()); // Shouldn't print.
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EXPECT_EQ(F14, null_foo);
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}
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bar B;
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bar &B1 = B;
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const bar *B2 = &B;
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} // anonymous namespace
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