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-rw-r--r--xpcom/tests/gtest/TestCOMArray.cpp286
1 files changed, 286 insertions, 0 deletions
diff --git a/xpcom/tests/gtest/TestCOMArray.cpp b/xpcom/tests/gtest/TestCOMArray.cpp
new file mode 100644
index 000000000..6703bf9d1
--- /dev/null
+++ b/xpcom/tests/gtest/TestCOMArray.cpp
@@ -0,0 +1,286 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+// vim:cindent:ts=4:et:sw=4:
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsCOMArray.h"
+#include "gtest/gtest.h"
+
+// {9e70a320-be02-11d1-8031-006008159b5a}
+#define NS_IFOO_IID \
+ {0x9e70a320, 0xbe02, 0x11d1, \
+ {0x80, 0x31, 0x00, 0x60, 0x08, 0x15, 0x9b, 0x5a}}
+
+class IFoo : public nsISupports {
+public:
+
+ NS_DECLARE_STATIC_IID_ACCESSOR(NS_IFOO_IID)
+
+ NS_IMETHOD_(MozExternalRefCountType) RefCnt() = 0;
+ NS_IMETHOD_(int32_t) ID() = 0;
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(IFoo, NS_IFOO_IID)
+
+class Foo final : public IFoo {
+ ~Foo();
+
+public:
+
+ explicit Foo(int32_t aID);
+
+ // nsISupports implementation
+ NS_DECL_ISUPPORTS
+
+ // IFoo implementation
+ NS_IMETHOD_(MozExternalRefCountType) RefCnt() override { return mRefCnt; }
+ NS_IMETHOD_(int32_t) ID() override { return mID; }
+
+ static int32_t gCount;
+
+ int32_t mID;
+};
+
+int32_t Foo::gCount = 0;
+
+Foo::Foo(int32_t aID)
+{
+ mID = aID;
+ ++gCount;
+}
+
+Foo::~Foo()
+{
+ --gCount;
+}
+
+NS_IMPL_ISUPPORTS(Foo, IFoo)
+
+
+// {0e70a320-be02-11d1-8031-006008159b5a}
+#define NS_IBAR_IID \
+ {0x0e70a320, 0xbe02, 0x11d1, \
+ {0x80, 0x31, 0x00, 0x60, 0x08, 0x15, 0x9b, 0x5a}}
+
+class IBar : public nsISupports {
+public:
+
+ NS_DECLARE_STATIC_IID_ACCESSOR(NS_IBAR_IID)
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(IBar, NS_IBAR_IID)
+
+class Bar final : public IBar {
+public:
+
+ explicit Bar(nsCOMArray<IBar>& aArray);
+
+ // nsISupports implementation
+ NS_DECL_ISUPPORTS
+
+ static int32_t sReleaseCalled;
+
+private:
+ ~Bar();
+
+ nsCOMArray<IBar>& mArray;
+};
+
+int32_t Bar::sReleaseCalled = 0;
+
+typedef nsCOMArray<IBar> Array2;
+
+Bar::Bar(Array2& aArray)
+ : mArray(aArray)
+{
+}
+
+Bar::~Bar()
+{
+ EXPECT_FALSE(mArray.RemoveObject(this));
+}
+
+NS_IMPL_ADDREF(Bar)
+NS_IMPL_QUERY_INTERFACE(Bar, IBar)
+
+NS_IMETHODIMP_(MozExternalRefCountType)
+Bar::Release(void)
+{
+ ++Bar::sReleaseCalled;
+ EXPECT_GT(int(mRefCnt), 0);
+ NS_ASSERT_OWNINGTHREAD(_class);
+ --mRefCnt;
+ NS_LOG_RELEASE(this, mRefCnt, "Bar");
+ if (mRefCnt == 0) {
+ mRefCnt = 1; /* stabilize */
+ delete this;
+ return 0;
+ }
+ return mRefCnt;
+}
+
+TEST(COMArray, Sizing)
+{
+ nsCOMArray<IFoo> arr;
+
+ for (int32_t i = 0; i < 20; ++i) {
+ nsCOMPtr<IFoo> foo = new Foo(i);
+ arr.AppendObject(foo);
+ }
+
+ ASSERT_EQ(arr.Count(), int32_t(20));
+ ASSERT_EQ(Foo::gCount, int32_t(20));
+
+ arr.TruncateLength(10);
+
+ ASSERT_EQ(arr.Count(), int32_t(10));
+ ASSERT_EQ(Foo::gCount, int32_t(10));
+
+ arr.SetCount(30);
+
+ ASSERT_EQ(arr.Count(), int32_t(30));
+ ASSERT_EQ(Foo::gCount, int32_t(10));
+
+ for (int32_t i = 0; i < 10; ++i) {
+ ASSERT_NE(arr[i], nullptr);
+ }
+
+ for (int32_t i = 10; i < 30; ++i) {
+ ASSERT_EQ(arr[i], nullptr);
+ }
+}
+
+TEST(COMArray, ObjectFunctions)
+{
+ int32_t base;
+ {
+ nsCOMArray<IBar> arr2;
+
+ IBar *thirdObject = nullptr,
+ *fourthObject = nullptr,
+ *fifthObject = nullptr,
+ *ninthObject = nullptr;
+ for (int32_t i = 0; i < 20; ++i) {
+ nsCOMPtr<IBar> bar = new Bar(arr2);
+ switch (i) {
+ case 2:
+ thirdObject = bar; break;
+ case 3:
+ fourthObject = bar; break;
+ case 4:
+ fifthObject = bar; break;
+ case 8:
+ ninthObject = bar; break;
+ }
+ arr2.AppendObject(bar);
+ }
+
+ base = Bar::sReleaseCalled;
+
+ arr2.SetCount(10);
+ ASSERT_EQ(Bar::sReleaseCalled, base + 10);
+ ASSERT_EQ(arr2.Count(), int32_t(10));
+
+ arr2.RemoveObjectAt(9);
+ ASSERT_EQ(Bar::sReleaseCalled, base + 11);
+ ASSERT_EQ(arr2.Count(), int32_t(9));
+
+ arr2.RemoveObject(ninthObject);
+ ASSERT_EQ(Bar::sReleaseCalled, base + 12);
+ ASSERT_EQ(arr2.Count(), int32_t(8));
+
+ arr2.RemoveObjectsAt(2, 3);
+ ASSERT_EQ(Bar::sReleaseCalled, base + 15);
+ ASSERT_EQ(arr2.Count(), int32_t(5));
+ for (int32_t j = 0; j < arr2.Count(); ++j) {
+ ASSERT_NE(arr2.ObjectAt(j), thirdObject);
+ ASSERT_NE(arr2.ObjectAt(j), fourthObject);
+ ASSERT_NE(arr2.ObjectAt(j), fifthObject);
+ }
+
+ arr2.RemoveObjectsAt(4, 1);
+ ASSERT_EQ(Bar::sReleaseCalled, base + 16);
+ ASSERT_EQ(arr2.Count(), int32_t(4));
+
+ arr2.Clear();
+ ASSERT_EQ(Bar::sReleaseCalled, base + 20);
+ }
+}
+
+TEST(COMArray, ElementFunctions)
+{
+ int32_t base;
+ {
+ nsCOMArray<IBar> arr2;
+
+ IBar *thirdElement = nullptr,
+ *fourthElement = nullptr,
+ *fifthElement = nullptr,
+ *ninthElement = nullptr;
+ for (int32_t i = 0; i < 20; ++i) {
+ nsCOMPtr<IBar> bar = new Bar(arr2);
+ switch (i) {
+ case 2:
+ thirdElement = bar; break;
+ case 3:
+ fourthElement = bar; break;
+ case 4:
+ fifthElement = bar; break;
+ case 8:
+ ninthElement = bar; break;
+ }
+ arr2.AppendElement(bar);
+ }
+
+ base = Bar::sReleaseCalled;
+
+ arr2.TruncateLength(10);
+ ASSERT_EQ(Bar::sReleaseCalled, base + 10);
+ ASSERT_EQ(arr2.Length(), uint32_t(10));
+
+ arr2.RemoveElementAt(9);
+ ASSERT_EQ(Bar::sReleaseCalled, base + 11);
+ ASSERT_EQ(arr2.Length(), uint32_t(9));
+
+ arr2.RemoveElement(ninthElement);
+ ASSERT_EQ(Bar::sReleaseCalled, base + 12);
+ ASSERT_EQ(arr2.Length(), uint32_t(8));
+
+ arr2.RemoveElementsAt(2, 3);
+ ASSERT_EQ(Bar::sReleaseCalled, base + 15);
+ ASSERT_EQ(arr2.Length(), uint32_t(5));
+ for (uint32_t j = 0; j < arr2.Length(); ++j) {
+ ASSERT_NE(arr2.ElementAt(j), thirdElement);
+ ASSERT_NE(arr2.ElementAt(j), fourthElement);
+ ASSERT_NE(arr2.ElementAt(j), fifthElement);
+ }
+
+ arr2.RemoveElementsAt(4, 1);
+ ASSERT_EQ(Bar::sReleaseCalled, base + 16);
+ ASSERT_EQ(arr2.Length(), uint32_t(4));
+
+ arr2.Clear();
+ ASSERT_EQ(Bar::sReleaseCalled, base + 20);
+ }
+}
+
+TEST(COMArray, Destructor)
+{
+ int32_t base;
+ Bar::sReleaseCalled = 0;
+
+ {
+ nsCOMArray<IBar> arr2;
+
+ for (int32_t i = 0; i < 20; ++i) {
+ nsCOMPtr<IBar> bar = new Bar(arr2);
+ arr2.AppendObject(bar);
+ }
+
+ base = Bar::sReleaseCalled;
+
+ // Let arr2 be destroyed
+ }
+ ASSERT_EQ(Bar::sReleaseCalled, base + 20);
+}