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-rw-r--r--unittests/ADT/polymorphic_ptr_test.cpp129
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diff --git a/unittests/ADT/polymorphic_ptr_test.cpp b/unittests/ADT/polymorphic_ptr_test.cpp
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+//===- llvm/unittest/ADT/polymorphic_ptr.h - polymorphic_ptr<T> 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/polymorphic_ptr.h"
+#include "llvm/Support/raw_ostream.h"
+
+using namespace llvm;
+
+namespace {
+
+struct S {
+ S(int x) : x(x) {}
+ S *clone() { return new S(*this); }
+ int x;
+};
+
+// A function that forces the return of a copy.
+template <typename T>
+T dummy_copy(const T &arg) { return arg; }
+
+TEST(polymorphic_ptr_test, Basic) {
+ polymorphic_ptr<S> null;
+ EXPECT_FALSE((bool)null);
+ EXPECT_TRUE(!null);
+ EXPECT_EQ((S*)0, null.get());
+
+ S *s = new S(42);
+ polymorphic_ptr<S> p(s);
+ EXPECT_TRUE((bool)p);
+ EXPECT_FALSE(!p);
+ EXPECT_TRUE(p != null);
+ EXPECT_FALSE(p == null);
+ EXPECT_TRUE(p == s);
+ EXPECT_TRUE(s == p);
+ EXPECT_FALSE(p != s);
+ EXPECT_FALSE(s != p);
+ EXPECT_EQ(s, &*p);
+ EXPECT_EQ(s, p.operator->());
+ EXPECT_EQ(s, p.get());
+ EXPECT_EQ(42, p->x);
+
+ EXPECT_EQ(s, p.take());
+ EXPECT_FALSE((bool)p);
+ EXPECT_TRUE(!p);
+ p = s;
+ EXPECT_TRUE((bool)p);
+ EXPECT_FALSE(!p);
+ EXPECT_EQ(s, &*p);
+ EXPECT_EQ(s, p.operator->());
+ EXPECT_EQ(s, p.get());
+ EXPECT_EQ(42, p->x);
+
+ polymorphic_ptr<S> p2((llvm_move(p)));
+#if !LLVM_HAS_RVALUE_REFERENCES
+ // 'p' may not have been moved from in C++98, fake it for the test.
+ p2 = p.take();
+#endif
+ EXPECT_FALSE((bool)p);
+ EXPECT_TRUE(!p);
+ EXPECT_TRUE((bool)p2);
+ EXPECT_FALSE(!p2);
+ EXPECT_EQ(s, &*p2);
+
+ using std::swap;
+ swap(p, p2);
+ EXPECT_TRUE((bool)p);
+ EXPECT_FALSE(!p);
+ EXPECT_EQ(s, &*p);
+ EXPECT_FALSE((bool)p2);
+ EXPECT_TRUE(!p2);
+
+ // Force copies and that everything survives.
+ polymorphic_ptr<S> p3 = dummy_copy(polymorphic_ptr<S>(p));
+ EXPECT_TRUE((bool)p3);
+ EXPECT_FALSE(!p3);
+ EXPECT_NE(s, &*p3);
+ EXPECT_EQ(42, p3->x);
+
+ // Force copies of null without trying to dereference anything.
+ polymorphic_ptr<S> null_copy = dummy_copy(polymorphic_ptr<S>(null));
+ EXPECT_FALSE((bool)null_copy);
+ EXPECT_TRUE(!null_copy);
+ EXPECT_EQ(null, null_copy);
+}
+
+struct Base {
+ virtual ~Base() {}
+ virtual Base *clone() = 0;
+ virtual StringRef name() { return "Base"; }
+};
+
+struct DerivedA : Base {
+ virtual DerivedA *clone() { return new DerivedA(); }
+ virtual StringRef name() { return "DerivedA"; }
+};
+struct DerivedB : Base {
+ virtual DerivedB *clone() { return new DerivedB(); }
+ virtual StringRef name() { return "DerivedB"; }
+};
+
+TEST(polymorphic_ptr_test, Polymorphism) {
+ polymorphic_ptr<Base> a(new DerivedA());
+ polymorphic_ptr<Base> b(new DerivedB());
+
+ EXPECT_EQ("DerivedA", a->name());
+ EXPECT_EQ("DerivedB", b->name());
+
+ polymorphic_ptr<Base> copy = dummy_copy(a);
+ EXPECT_NE(a, copy);
+ EXPECT_EQ("DerivedA", copy->name());
+
+ copy = dummy_copy(b);
+ EXPECT_NE(b, copy);
+ EXPECT_EQ("DerivedB", copy->name());
+
+ // Test creating a copy out of a temporary directly.
+ copy = dummy_copy<polymorphic_ptr<Base> >(new DerivedA());
+ EXPECT_NE(a, copy);
+ EXPECT_EQ("DerivedA", copy->name());
+}
+
+}