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Unified Diff: base/bind_unittest.cc

Issue 1647803004: Move base to DEPS (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 4 years, 11 months ago
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Index: base/bind_unittest.cc
diff --git a/base/bind_unittest.cc b/base/bind_unittest.cc
deleted file mode 100644
index f885403c92dfa68b0ba0a4afe534e4c3d39ad918..0000000000000000000000000000000000000000
--- a/base/bind_unittest.cc
+++ /dev/null
@@ -1,829 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/bind.h"
-
-#include "base/callback.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "testing/gmock/include/gmock/gmock.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-using ::testing::Mock;
-using ::testing::Return;
-using ::testing::StrictMock;
-
-namespace base {
-namespace {
-
-class IncompleteType;
-
-class NoRef {
- public:
- NoRef() {}
-
- MOCK_METHOD0(VoidMethod0, void(void));
- MOCK_CONST_METHOD0(VoidConstMethod0, void(void));
-
- MOCK_METHOD0(IntMethod0, int(void));
- MOCK_CONST_METHOD0(IntConstMethod0, int(void));
-
- private:
- // Particularly important in this test to ensure no copies are made.
- DISALLOW_COPY_AND_ASSIGN(NoRef);
-};
-
-class HasRef : public NoRef {
- public:
- HasRef() {}
-
- MOCK_CONST_METHOD0(AddRef, void(void));
- MOCK_CONST_METHOD0(Release, bool(void));
-
- private:
- // Particularly important in this test to ensure no copies are made.
- DISALLOW_COPY_AND_ASSIGN(HasRef);
-};
-
-class HasRefPrivateDtor : public HasRef {
- private:
- ~HasRefPrivateDtor() {}
-};
-
-static const int kParentValue = 1;
-static const int kChildValue = 2;
-
-class Parent {
- public:
- void AddRef(void) const {}
- void Release(void) const {}
- virtual void VirtualSet() { value = kParentValue; }
- void NonVirtualSet() { value = kParentValue; }
- int value;
-};
-
-class Child : public Parent {
- public:
- void VirtualSet() override { value = kChildValue; }
- void NonVirtualSet() { value = kChildValue; }
-};
-
-class NoRefParent {
- public:
- virtual void VirtualSet() { value = kParentValue; }
- void NonVirtualSet() { value = kParentValue; }
- int value;
-};
-
-class NoRefChild : public NoRefParent {
- void VirtualSet() override { value = kChildValue; }
- void NonVirtualSet() { value = kChildValue; }
-};
-
-// Used for probing the number of copies that occur if a type must be coerced
-// during argument forwarding in the Run() methods.
-struct DerivedCopyCounter {
- DerivedCopyCounter(int* copies, int* assigns)
- : copies_(copies), assigns_(assigns) {
- }
- int* copies_;
- int* assigns_;
-};
-
-// Used for probing the number of copies in an argument.
-class CopyCounter {
- public:
- CopyCounter(int* copies, int* assigns)
- : copies_(copies), assigns_(assigns) {
- }
-
- CopyCounter(const CopyCounter& other)
- : copies_(other.copies_),
- assigns_(other.assigns_) {
- (*copies_)++;
- }
-
- // Probing for copies from coercion.
- explicit CopyCounter(const DerivedCopyCounter& other)
- : copies_(other.copies_),
- assigns_(other.assigns_) {
- (*copies_)++;
- }
-
- const CopyCounter& operator=(const CopyCounter& rhs) {
- copies_ = rhs.copies_;
- assigns_ = rhs.assigns_;
-
- if (assigns_) {
- (*assigns_)++;
- }
-
- return *this;
- }
-
- int copies() const {
- return *copies_;
- }
-
- private:
- int* copies_;
- int* assigns_;
-};
-
-class DeleteCounter {
- public:
- explicit DeleteCounter(int* deletes)
- : deletes_(deletes) {
- }
-
- ~DeleteCounter() {
- (*deletes_)++;
- }
-
- void VoidMethod0() {}
-
- private:
- int* deletes_;
-};
-
-template <typename T>
-T PassThru(T scoper) {
- return scoper.Pass();
-}
-
-// Some test functions that we can Bind to.
-template <typename T>
-T PolymorphicIdentity(T t) {
- return t;
-}
-
-template <typename T>
-void VoidPolymorphic1(T t) {
-}
-
-int Identity(int n) {
- return n;
-}
-
-int ArrayGet(const int array[], int n) {
- return array[n];
-}
-
-int Sum(int a, int b, int c, int d, int e, int f) {
- return a + b + c + d + e + f;
-}
-
-const char* CStringIdentity(const char* s) {
- return s;
-}
-
-int GetCopies(const CopyCounter& counter) {
- return counter.copies();
-}
-
-int UnwrapNoRefParent(NoRefParent p) {
- return p.value;
-}
-
-int UnwrapNoRefParentPtr(NoRefParent* p) {
- return p->value;
-}
-
-int UnwrapNoRefParentConstRef(const NoRefParent& p) {
- return p.value;
-}
-
-void RefArgSet(int &n) {
- n = 2;
-}
-
-void PtrArgSet(int *n) {
- *n = 2;
-}
-
-int FunctionWithWeakFirstParam(WeakPtr<NoRef> o, int n) {
- return n;
-}
-
-int FunctionWithScopedRefptrFirstParam(const scoped_refptr<HasRef>& o, int n) {
- return n;
-}
-
-void TakesACallback(const Closure& callback) {
- callback.Run();
-}
-
-class BindTest : public ::testing::Test {
- public:
- BindTest() {
- const_has_ref_ptr_ = &has_ref_;
- const_no_ref_ptr_ = &no_ref_;
- static_func_mock_ptr = &static_func_mock_;
- }
-
- virtual ~BindTest() {
- }
-
- static void VoidFunc0(void) {
- static_func_mock_ptr->VoidMethod0();
- }
-
- static int IntFunc0(void) { return static_func_mock_ptr->IntMethod0(); }
-
- protected:
- StrictMock<NoRef> no_ref_;
- StrictMock<HasRef> has_ref_;
- const HasRef* const_has_ref_ptr_;
- const NoRef* const_no_ref_ptr_;
- StrictMock<NoRef> static_func_mock_;
-
- // Used by the static functions to perform expectations.
- static StrictMock<NoRef>* static_func_mock_ptr;
-
- private:
- DISALLOW_COPY_AND_ASSIGN(BindTest);
-};
-
-StrictMock<NoRef>* BindTest::static_func_mock_ptr;
-
-// Sanity check that we can instantiate a callback for each arity.
-TEST_F(BindTest, ArityTest) {
- Callback<int(void)> c0 = Bind(&Sum, 32, 16, 8, 4, 2, 1);
- EXPECT_EQ(63, c0.Run());
-
- Callback<int(int)> c1 = Bind(&Sum, 32, 16, 8, 4, 2);
- EXPECT_EQ(75, c1.Run(13));
-
- Callback<int(int,int)> c2 = Bind(&Sum, 32, 16, 8, 4);
- EXPECT_EQ(85, c2.Run(13, 12));
-
- Callback<int(int,int,int)> c3 = Bind(&Sum, 32, 16, 8);
- EXPECT_EQ(92, c3.Run(13, 12, 11));
-
- Callback<int(int,int,int,int)> c4 = Bind(&Sum, 32, 16);
- EXPECT_EQ(94, c4.Run(13, 12, 11, 10));
-
- Callback<int(int,int,int,int,int)> c5 = Bind(&Sum, 32);
- EXPECT_EQ(87, c5.Run(13, 12, 11, 10, 9));
-
- Callback<int(int,int,int,int,int,int)> c6 = Bind(&Sum);
- EXPECT_EQ(69, c6.Run(13, 12, 11, 10, 9, 14));
-}
-
-// Test the Currying ability of the Callback system.
-TEST_F(BindTest, CurryingTest) {
- Callback<int(int,int,int,int,int,int)> c6 = Bind(&Sum);
- EXPECT_EQ(69, c6.Run(13, 12, 11, 10, 9, 14));
-
- Callback<int(int,int,int,int,int)> c5 = Bind(c6, 32);
- EXPECT_EQ(87, c5.Run(13, 12, 11, 10, 9));
-
- Callback<int(int,int,int,int)> c4 = Bind(c5, 16);
- EXPECT_EQ(94, c4.Run(13, 12, 11, 10));
-
- Callback<int(int,int,int)> c3 = Bind(c4, 8);
- EXPECT_EQ(92, c3.Run(13, 12, 11));
-
- Callback<int(int,int)> c2 = Bind(c3, 4);
- EXPECT_EQ(85, c2.Run(13, 12));
-
- Callback<int(int)> c1 = Bind(c2, 2);
- EXPECT_EQ(75, c1.Run(13));
-
- Callback<int(void)> c0 = Bind(c1, 1);
- EXPECT_EQ(63, c0.Run());
-}
-
-// Test that currying the rvalue result of another Bind() works correctly.
-// - rvalue should be usable as argument to Bind().
-// - multiple runs of resulting Callback remain valid.
-TEST_F(BindTest, CurryingRvalueResultOfBind) {
- int n = 0;
- Closure cb = base::Bind(&TakesACallback, base::Bind(&PtrArgSet, &n));
-
- // If we implement Bind() such that the return value has auto_ptr-like
- // semantics, the second call here will fail because ownership of
- // the internal BindState<> would have been transfered to a *temporary*
- // constructon of a Callback object on the first call.
- cb.Run();
- EXPECT_EQ(2, n);
-
- n = 0;
- cb.Run();
- EXPECT_EQ(2, n);
-}
-
-// Function type support.
-// - Normal function.
-// - Normal function bound with non-refcounted first argument.
-// - Method bound to non-const object.
-// - Method bound to scoped_refptr.
-// - Const method bound to non-const object.
-// - Const method bound to const object.
-// - Derived classes can be used with pointers to non-virtual base functions.
-// - Derived classes can be used with pointers to virtual base functions (and
-// preserve virtual dispatch).
-TEST_F(BindTest, FunctionTypeSupport) {
- EXPECT_CALL(static_func_mock_, VoidMethod0());
- EXPECT_CALL(has_ref_, AddRef()).Times(5);
- EXPECT_CALL(has_ref_, Release()).Times(5);
- EXPECT_CALL(has_ref_, VoidMethod0()).Times(2);
- EXPECT_CALL(has_ref_, VoidConstMethod0()).Times(2);
-
- Closure normal_cb = Bind(&VoidFunc0);
- Callback<NoRef*(void)> normal_non_refcounted_cb =
- Bind(&PolymorphicIdentity<NoRef*>, &no_ref_);
- normal_cb.Run();
- EXPECT_EQ(&no_ref_, normal_non_refcounted_cb.Run());
-
- Closure method_cb = Bind(&HasRef::VoidMethod0, &has_ref_);
- Closure method_refptr_cb = Bind(&HasRef::VoidMethod0,
- make_scoped_refptr(&has_ref_));
- Closure const_method_nonconst_obj_cb = Bind(&HasRef::VoidConstMethod0,
- &has_ref_);
- Closure const_method_const_obj_cb = Bind(&HasRef::VoidConstMethod0,
- const_has_ref_ptr_);
- method_cb.Run();
- method_refptr_cb.Run();
- const_method_nonconst_obj_cb.Run();
- const_method_const_obj_cb.Run();
-
- Child child;
- child.value = 0;
- Closure virtual_set_cb = Bind(&Parent::VirtualSet, &child);
- virtual_set_cb.Run();
- EXPECT_EQ(kChildValue, child.value);
-
- child.value = 0;
- Closure non_virtual_set_cb = Bind(&Parent::NonVirtualSet, &child);
- non_virtual_set_cb.Run();
- EXPECT_EQ(kParentValue, child.value);
-}
-
-// Return value support.
-// - Function with return value.
-// - Method with return value.
-// - Const method with return value.
-TEST_F(BindTest, ReturnValues) {
- EXPECT_CALL(static_func_mock_, IntMethod0()).WillOnce(Return(1337));
- EXPECT_CALL(has_ref_, AddRef()).Times(3);
- EXPECT_CALL(has_ref_, Release()).Times(3);
- EXPECT_CALL(has_ref_, IntMethod0()).WillOnce(Return(31337));
- EXPECT_CALL(has_ref_, IntConstMethod0())
- .WillOnce(Return(41337))
- .WillOnce(Return(51337));
-
- Callback<int(void)> normal_cb = Bind(&IntFunc0);
- Callback<int(void)> method_cb = Bind(&HasRef::IntMethod0, &has_ref_);
- Callback<int(void)> const_method_nonconst_obj_cb =
- Bind(&HasRef::IntConstMethod0, &has_ref_);
- Callback<int(void)> const_method_const_obj_cb =
- Bind(&HasRef::IntConstMethod0, const_has_ref_ptr_);
- EXPECT_EQ(1337, normal_cb.Run());
- EXPECT_EQ(31337, method_cb.Run());
- EXPECT_EQ(41337, const_method_nonconst_obj_cb.Run());
- EXPECT_EQ(51337, const_method_const_obj_cb.Run());
-}
-
-// IgnoreResult adapter test.
-// - Function with return value.
-// - Method with return value.
-// - Const Method with return.
-// - Method with return value bound to WeakPtr<>.
-// - Const Method with return bound to WeakPtr<>.
-TEST_F(BindTest, IgnoreResult) {
- EXPECT_CALL(static_func_mock_, IntMethod0()).WillOnce(Return(1337));
- EXPECT_CALL(has_ref_, AddRef()).Times(2);
- EXPECT_CALL(has_ref_, Release()).Times(2);
- EXPECT_CALL(has_ref_, IntMethod0()).WillOnce(Return(10));
- EXPECT_CALL(has_ref_, IntConstMethod0()).WillOnce(Return(11));
- EXPECT_CALL(no_ref_, IntMethod0()).WillOnce(Return(12));
- EXPECT_CALL(no_ref_, IntConstMethod0()).WillOnce(Return(13));
-
- Closure normal_func_cb = Bind(IgnoreResult(&IntFunc0));
- normal_func_cb.Run();
-
- Closure non_void_method_cb =
- Bind(IgnoreResult(&HasRef::IntMethod0), &has_ref_);
- non_void_method_cb.Run();
-
- Closure non_void_const_method_cb =
- Bind(IgnoreResult(&HasRef::IntConstMethod0), &has_ref_);
- non_void_const_method_cb.Run();
-
- WeakPtrFactory<NoRef> weak_factory(&no_ref_);
- WeakPtrFactory<const NoRef> const_weak_factory(const_no_ref_ptr_);
-
- Closure non_void_weak_method_cb =
- Bind(IgnoreResult(&NoRef::IntMethod0), weak_factory.GetWeakPtr());
- non_void_weak_method_cb.Run();
-
- Closure non_void_weak_const_method_cb =
- Bind(IgnoreResult(&NoRef::IntConstMethod0), weak_factory.GetWeakPtr());
- non_void_weak_const_method_cb.Run();
-
- weak_factory.InvalidateWeakPtrs();
- non_void_weak_const_method_cb.Run();
- non_void_weak_method_cb.Run();
-}
-
-// Argument binding tests.
-// - Argument binding to primitive.
-// - Argument binding to primitive pointer.
-// - Argument binding to a literal integer.
-// - Argument binding to a literal string.
-// - Argument binding with template function.
-// - Argument binding to an object.
-// - Argument binding to pointer to incomplete type.
-// - Argument gets type converted.
-// - Pointer argument gets converted.
-// - Const Reference forces conversion.
-TEST_F(BindTest, ArgumentBinding) {
- int n = 2;
-
- Callback<int(void)> bind_primitive_cb = Bind(&Identity, n);
- EXPECT_EQ(n, bind_primitive_cb.Run());
-
- Callback<int*(void)> bind_primitive_pointer_cb =
- Bind(&PolymorphicIdentity<int*>, &n);
- EXPECT_EQ(&n, bind_primitive_pointer_cb.Run());
-
- Callback<int(void)> bind_int_literal_cb = Bind(&Identity, 3);
- EXPECT_EQ(3, bind_int_literal_cb.Run());
-
- Callback<const char*(void)> bind_string_literal_cb =
- Bind(&CStringIdentity, "hi");
- EXPECT_STREQ("hi", bind_string_literal_cb.Run());
-
- Callback<int(void)> bind_template_function_cb =
- Bind(&PolymorphicIdentity<int>, 4);
- EXPECT_EQ(4, bind_template_function_cb.Run());
-
- NoRefParent p;
- p.value = 5;
- Callback<int(void)> bind_object_cb = Bind(&UnwrapNoRefParent, p);
- EXPECT_EQ(5, bind_object_cb.Run());
-
- IncompleteType* incomplete_ptr = reinterpret_cast<IncompleteType*>(123);
- Callback<IncompleteType*(void)> bind_incomplete_ptr_cb =
- Bind(&PolymorphicIdentity<IncompleteType*>, incomplete_ptr);
- EXPECT_EQ(incomplete_ptr, bind_incomplete_ptr_cb.Run());
-
- NoRefChild c;
- c.value = 6;
- Callback<int(void)> bind_promotes_cb = Bind(&UnwrapNoRefParent, c);
- EXPECT_EQ(6, bind_promotes_cb.Run());
-
- c.value = 7;
- Callback<int(void)> bind_pointer_promotes_cb =
- Bind(&UnwrapNoRefParentPtr, &c);
- EXPECT_EQ(7, bind_pointer_promotes_cb.Run());
-
- c.value = 8;
- Callback<int(void)> bind_const_reference_promotes_cb =
- Bind(&UnwrapNoRefParentConstRef, c);
- EXPECT_EQ(8, bind_const_reference_promotes_cb.Run());
-}
-
-// Unbound argument type support tests.
-// - Unbound value.
-// - Unbound pointer.
-// - Unbound reference.
-// - Unbound const reference.
-// - Unbound unsized array.
-// - Unbound sized array.
-// - Unbound array-of-arrays.
-TEST_F(BindTest, UnboundArgumentTypeSupport) {
- Callback<void(int)> unbound_value_cb = Bind(&VoidPolymorphic1<int>);
- Callback<void(int*)> unbound_pointer_cb = Bind(&VoidPolymorphic1<int*>);
- Callback<void(int&)> unbound_ref_cb = Bind(&VoidPolymorphic1<int&>);
- Callback<void(const int&)> unbound_const_ref_cb =
- Bind(&VoidPolymorphic1<const int&>);
- Callback<void(int[])> unbound_unsized_array_cb =
- Bind(&VoidPolymorphic1<int[]>);
- Callback<void(int[2])> unbound_sized_array_cb =
- Bind(&VoidPolymorphic1<int[2]>);
- Callback<void(int[][2])> unbound_array_of_arrays_cb =
- Bind(&VoidPolymorphic1<int[][2]>);
-}
-
-// Function with unbound reference parameter.
-// - Original parameter is modified by callback.
-TEST_F(BindTest, UnboundReferenceSupport) {
- int n = 0;
- Callback<void(int&)> unbound_ref_cb = Bind(&RefArgSet);
- unbound_ref_cb.Run(n);
- EXPECT_EQ(2, n);
-}
-
-// Functions that take reference parameters.
-// - Forced reference parameter type still stores a copy.
-// - Forced const reference parameter type still stores a copy.
-TEST_F(BindTest, ReferenceArgumentBinding) {
- int n = 1;
- int& ref_n = n;
- const int& const_ref_n = n;
-
- Callback<int(void)> ref_copies_cb = Bind(&Identity, ref_n);
- EXPECT_EQ(n, ref_copies_cb.Run());
- n++;
- EXPECT_EQ(n - 1, ref_copies_cb.Run());
-
- Callback<int(void)> const_ref_copies_cb = Bind(&Identity, const_ref_n);
- EXPECT_EQ(n, const_ref_copies_cb.Run());
- n++;
- EXPECT_EQ(n - 1, const_ref_copies_cb.Run());
-}
-
-// Check that we can pass in arrays and have them be stored as a pointer.
-// - Array of values stores a pointer.
-// - Array of const values stores a pointer.
-TEST_F(BindTest, ArrayArgumentBinding) {
- int array[4] = {1, 1, 1, 1};
- const int (*const_array_ptr)[4] = &array;
-
- Callback<int(void)> array_cb = Bind(&ArrayGet, array, 1);
- EXPECT_EQ(1, array_cb.Run());
-
- Callback<int(void)> const_array_cb = Bind(&ArrayGet, *const_array_ptr, 1);
- EXPECT_EQ(1, const_array_cb.Run());
-
- array[1] = 3;
- EXPECT_EQ(3, array_cb.Run());
- EXPECT_EQ(3, const_array_cb.Run());
-}
-
-// Verify SupportsAddRefAndRelease correctly introspects the class type for
-// AddRef() and Release().
-// - Class with AddRef() and Release()
-// - Class without AddRef() and Release()
-// - Derived Class with AddRef() and Release()
-// - Derived Class without AddRef() and Release()
-// - Derived Class with AddRef() and Release() and a private destructor.
-TEST_F(BindTest, SupportsAddRefAndRelease) {
- EXPECT_TRUE(internal::SupportsAddRefAndRelease<HasRef>::value);
- EXPECT_FALSE(internal::SupportsAddRefAndRelease<NoRef>::value);
-
- // StrictMock<T> is a derived class of T. So, we use StrictMock<HasRef> and
- // StrictMock<NoRef> to test that SupportsAddRefAndRelease works over
- // inheritance.
- EXPECT_TRUE(internal::SupportsAddRefAndRelease<StrictMock<HasRef> >::value);
- EXPECT_FALSE(internal::SupportsAddRefAndRelease<StrictMock<NoRef> >::value);
-
- // This matters because the implementation creates a dummy class that
- // inherits from the template type.
- EXPECT_TRUE(internal::SupportsAddRefAndRelease<HasRefPrivateDtor>::value);
-}
-
-// Unretained() wrapper support.
-// - Method bound to Unretained() non-const object.
-// - Const method bound to Unretained() non-const object.
-// - Const method bound to Unretained() const object.
-TEST_F(BindTest, Unretained) {
- EXPECT_CALL(no_ref_, VoidMethod0());
- EXPECT_CALL(no_ref_, VoidConstMethod0()).Times(2);
-
- Callback<void(void)> method_cb =
- Bind(&NoRef::VoidMethod0, Unretained(&no_ref_));
- method_cb.Run();
-
- Callback<void(void)> const_method_cb =
- Bind(&NoRef::VoidConstMethod0, Unretained(&no_ref_));
- const_method_cb.Run();
-
- Callback<void(void)> const_method_const_ptr_cb =
- Bind(&NoRef::VoidConstMethod0, Unretained(const_no_ref_ptr_));
- const_method_const_ptr_cb.Run();
-}
-
-// WeakPtr() support.
-// - Method bound to WeakPtr<> to non-const object.
-// - Const method bound to WeakPtr<> to non-const object.
-// - Const method bound to WeakPtr<> to const object.
-// - Normal Function with WeakPtr<> as P1 can have return type and is
-// not canceled.
-TEST_F(BindTest, WeakPtr) {
- EXPECT_CALL(no_ref_, VoidMethod0());
- EXPECT_CALL(no_ref_, VoidConstMethod0()).Times(2);
-
- WeakPtrFactory<NoRef> weak_factory(&no_ref_);
- WeakPtrFactory<const NoRef> const_weak_factory(const_no_ref_ptr_);
-
- Closure method_cb =
- Bind(&NoRef::VoidMethod0, weak_factory.GetWeakPtr());
- method_cb.Run();
-
- Closure const_method_cb =
- Bind(&NoRef::VoidConstMethod0, const_weak_factory.GetWeakPtr());
- const_method_cb.Run();
-
- Closure const_method_const_ptr_cb =
- Bind(&NoRef::VoidConstMethod0, const_weak_factory.GetWeakPtr());
- const_method_const_ptr_cb.Run();
-
- Callback<int(int)> normal_func_cb =
- Bind(&FunctionWithWeakFirstParam, weak_factory.GetWeakPtr());
- EXPECT_EQ(1, normal_func_cb.Run(1));
-
- weak_factory.InvalidateWeakPtrs();
- const_weak_factory.InvalidateWeakPtrs();
-
- method_cb.Run();
- const_method_cb.Run();
- const_method_const_ptr_cb.Run();
-
- // Still runs even after the pointers are invalidated.
- EXPECT_EQ(2, normal_func_cb.Run(2));
-}
-
-// ConstRef() wrapper support.
-// - Binding w/o ConstRef takes a copy.
-// - Binding a ConstRef takes a reference.
-// - Binding ConstRef to a function ConstRef does not copy on invoke.
-TEST_F(BindTest, ConstRef) {
- int n = 1;
-
- Callback<int(void)> copy_cb = Bind(&Identity, n);
- Callback<int(void)> const_ref_cb = Bind(&Identity, ConstRef(n));
- EXPECT_EQ(n, copy_cb.Run());
- EXPECT_EQ(n, const_ref_cb.Run());
- n++;
- EXPECT_EQ(n - 1, copy_cb.Run());
- EXPECT_EQ(n, const_ref_cb.Run());
-
- int copies = 0;
- int assigns = 0;
- CopyCounter counter(&copies, &assigns);
- Callback<int(void)> all_const_ref_cb =
- Bind(&GetCopies, ConstRef(counter));
- EXPECT_EQ(0, all_const_ref_cb.Run());
- EXPECT_EQ(0, copies);
- EXPECT_EQ(0, assigns);
-}
-
-TEST_F(BindTest, ScopedRefptr) {
- // BUG: The scoped_refptr should cause the only AddRef()/Release() pair. But
- // due to a bug in base::Bind(), there's an extra call when invoking the
- // callback.
- // https://code.google.com/p/chromium/issues/detail?id=251937
- EXPECT_CALL(has_ref_, AddRef()).Times(2);
- EXPECT_CALL(has_ref_, Release()).Times(2);
-
- const scoped_refptr<StrictMock<HasRef> > refptr(&has_ref_);
-
- Callback<int(void)> scoped_refptr_const_ref_cb =
- Bind(&FunctionWithScopedRefptrFirstParam, base::ConstRef(refptr), 1);
- EXPECT_EQ(1, scoped_refptr_const_ref_cb.Run());
-}
-
-// Test Owned() support.
-TEST_F(BindTest, Owned) {
- int deletes = 0;
- DeleteCounter* counter = new DeleteCounter(&deletes);
-
- // If we don't capture, delete happens on Callback destruction/reset.
- // return the same value.
- Callback<DeleteCounter*(void)> no_capture_cb =
- Bind(&PolymorphicIdentity<DeleteCounter*>, Owned(counter));
- ASSERT_EQ(counter, no_capture_cb.Run());
- ASSERT_EQ(counter, no_capture_cb.Run());
- EXPECT_EQ(0, deletes);
- no_capture_cb.Reset(); // This should trigger a delete.
- EXPECT_EQ(1, deletes);
-
- deletes = 0;
- counter = new DeleteCounter(&deletes);
- base::Closure own_object_cb =
- Bind(&DeleteCounter::VoidMethod0, Owned(counter));
- own_object_cb.Run();
- EXPECT_EQ(0, deletes);
- own_object_cb.Reset();
- EXPECT_EQ(1, deletes);
-}
-
-// Passed() wrapper support.
-// - Passed() can be constructed from a pointer to scoper.
-// - Passed() can be constructed from a scoper rvalue.
-// - Using Passed() gives Callback Ownership.
-// - Ownership is transferred from Callback to callee on the first Run().
-// - Callback supports unbound arguments.
-TEST_F(BindTest, ScopedPtr) {
- int deletes = 0;
-
- // Tests the Passed() function's support for pointers.
- scoped_ptr<DeleteCounter> ptr(new DeleteCounter(&deletes));
- Callback<scoped_ptr<DeleteCounter>(void)> unused_callback =
- Bind(&PassThru<scoped_ptr<DeleteCounter> >, Passed(&ptr));
- EXPECT_FALSE(ptr.get());
- EXPECT_EQ(0, deletes);
-
- // If we never invoke the Callback, it retains ownership and deletes.
- unused_callback.Reset();
- EXPECT_EQ(1, deletes);
-
- // Tests the Passed() function's support for rvalues.
- deletes = 0;
- DeleteCounter* counter = new DeleteCounter(&deletes);
- Callback<scoped_ptr<DeleteCounter>(void)> callback =
- Bind(&PassThru<scoped_ptr<DeleteCounter> >,
- Passed(scoped_ptr<DeleteCounter>(counter)));
- EXPECT_FALSE(ptr.get());
- EXPECT_EQ(0, deletes);
-
- // Check that ownership can be transferred back out.
- scoped_ptr<DeleteCounter> result = callback.Run();
- ASSERT_EQ(counter, result.get());
- EXPECT_EQ(0, deletes);
-
- // Resetting does not delete since ownership was transferred.
- callback.Reset();
- EXPECT_EQ(0, deletes);
-
- // Ensure that we actually did get ownership.
- result.reset();
- EXPECT_EQ(1, deletes);
-
- // Test unbound argument forwarding.
- Callback<scoped_ptr<DeleteCounter>(scoped_ptr<DeleteCounter>)> cb_unbound =
- Bind(&PassThru<scoped_ptr<DeleteCounter> >);
- ptr.reset(new DeleteCounter(&deletes));
- cb_unbound.Run(ptr.Pass());
-}
-
-// Argument Copy-constructor usage for non-reference parameters.
-// - Bound arguments are only copied once.
-// - Forwarded arguments are only copied once.
-// - Forwarded arguments with coercions are only copied twice (once for the
-// coercion, and one for the final dispatch).
-TEST_F(BindTest, ArgumentCopies) {
- int copies = 0;
- int assigns = 0;
-
- CopyCounter counter(&copies, &assigns);
-
- Callback<void(void)> copy_cb =
- Bind(&VoidPolymorphic1<CopyCounter>, counter);
- EXPECT_GE(1, copies);
- EXPECT_EQ(0, assigns);
-
- copies = 0;
- assigns = 0;
- Callback<void(CopyCounter)> forward_cb =
- Bind(&VoidPolymorphic1<CopyCounter>);
- forward_cb.Run(counter);
- EXPECT_GE(1, copies);
- EXPECT_EQ(0, assigns);
-
- copies = 0;
- assigns = 0;
- DerivedCopyCounter derived(&copies, &assigns);
- Callback<void(CopyCounter)> coerce_cb =
- Bind(&VoidPolymorphic1<CopyCounter>);
- coerce_cb.Run(CopyCounter(derived));
- EXPECT_GE(2, copies);
- EXPECT_EQ(0, assigns);
-}
-
-// Callback construction and assignment tests.
-// - Construction from an InvokerStorageHolder should not cause ref/deref.
-// - Assignment from other callback should only cause one ref
-//
-// TODO(ajwong): Is there actually a way to test this?
-
-#if defined(OS_WIN)
-int __fastcall FastCallFunc(int n) {
- return n;
-}
-
-int __stdcall StdCallFunc(int n) {
- return n;
-}
-
-// Windows specific calling convention support.
-// - Can bind a __fastcall function.
-// - Can bind a __stdcall function.
-TEST_F(BindTest, WindowsCallingConventions) {
- Callback<int(void)> fastcall_cb = Bind(&FastCallFunc, 1);
- EXPECT_EQ(1, fastcall_cb.Run());
-
- Callback<int(void)> stdcall_cb = Bind(&StdCallFunc, 2);
- EXPECT_EQ(2, stdcall_cb.Run());
-}
-#endif
-
-#if (!defined(NDEBUG) || defined(DCHECK_ALWAYS_ON)) && GTEST_HAS_DEATH_TEST
-
-// Test null callbacks cause a DCHECK.
-TEST(BindDeathTest, NullCallback) {
- base::Callback<void(int)> null_cb;
- ASSERT_TRUE(null_cb.is_null());
- EXPECT_DEATH(base::Bind(null_cb, 42), "");
-}
-
-#endif // (!defined(NDEBUG) || defined(DCHECK_ALWAYS_ON)) &&
- // GTEST_HAS_DEATH_TEST
-
-} // namespace
-} // namespace base
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