Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 652 insertions, 0 deletions

diff --git a/src/rapidjson/test/unittest/documenttest.cpp b/src/rapidjson/test/unittest/documenttest.cpp
new file mode 100644
index 00000000..ecd4b79b
--- /dev/null
+++ b/src/rapidjson/test/unittest/documenttest.cpp
@@ -0,0 +1,652 @@
+// Tencent is pleased to support the open source community by making RapidJSON available.
+// 
+// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved.
+//
+// Licensed under the MIT License (the "License"); you may not use this file except
+// in compliance with the License. You may obtain a copy of the License at
+//
+// http://opensource.org/licenses/MIT
+//
+// Unless required by applicable law or agreed to in writing, software distributed 
+// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR 
+// CONDITIONS OF ANY KIND, either express or implied. See the License for the 
+// specific language governing permissions and limitations under the License.
+
+#include "unittest.h"
+#include "rapidjson/document.h"
+#include "rapidjson/writer.h"
+#include "rapidjson/filereadstream.h"
+#include "rapidjson/encodedstream.h"
+#include "rapidjson/stringbuffer.h"
+#include <sstream>
+#include <algorithm>
+
+#ifdef __clang__
+RAPIDJSON_DIAG_PUSH
+RAPIDJSON_DIAG_OFF(c++98-compat)
+RAPIDJSON_DIAG_OFF(missing-variable-declarations)
+#endif
+
+using namespace rapidjson;
+
+template <typename DocumentType>
+void ParseCheck(DocumentType& doc) {
+    typedef typename DocumentType::ValueType ValueType;
+
+    EXPECT_FALSE(doc.HasParseError());
+    if (doc.HasParseError())
+        printf("Error: %d at %zu\n", static_cast<int>(doc.GetParseError()), doc.GetErrorOffset());
+    EXPECT_TRUE(static_cast<ParseResult>(doc));
+
+    EXPECT_TRUE(doc.IsObject());
+
+    EXPECT_TRUE(doc.HasMember("hello"));
+    const ValueType& hello = doc["hello"];
+    EXPECT_TRUE(hello.IsString());
+    EXPECT_STREQ("world", hello.GetString());
+
+    EXPECT_TRUE(doc.HasMember("t"));
+    const ValueType& t = doc["t"];
+    EXPECT_TRUE(t.IsTrue());
+
+    EXPECT_TRUE(doc.HasMember("f"));
+    const ValueType& f = doc["f"];
+    EXPECT_TRUE(f.IsFalse());
+
+    EXPECT_TRUE(doc.HasMember("n"));
+    const ValueType& n = doc["n"];
+    EXPECT_TRUE(n.IsNull());
+
+    EXPECT_TRUE(doc.HasMember("i"));
+    const ValueType& i = doc["i"];
+    EXPECT_TRUE(i.IsNumber());
+    EXPECT_EQ(123, i.GetInt());
+
+    EXPECT_TRUE(doc.HasMember("pi"));
+    const ValueType& pi = doc["pi"];
+    EXPECT_TRUE(pi.IsNumber());
+    EXPECT_DOUBLE_EQ(3.1416, pi.GetDouble());
+
+    EXPECT_TRUE(doc.HasMember("a"));
+    const ValueType& a = doc["a"];
+    EXPECT_TRUE(a.IsArray());
+    EXPECT_EQ(4u, a.Size());
+    for (SizeType j = 0; j < 4; j++)
+        EXPECT_EQ(j + 1, a[j].GetUint());
+}
+
+template <typename Allocator, typename StackAllocator>
+void ParseTest() {
+    typedef GenericDocument<UTF8<>, Allocator, StackAllocator> DocumentType;
+    DocumentType doc;
+
+    const char* json = " { \"hello\" : \"world\", \"t\" : true , \"f\" : false, \"n\": null, \"i\":123, \"pi\": 3.1416, \"a\":[1, 2, 3, 4] } ";
+
+    doc.Parse(json);
+    ParseCheck(doc);
+
+    doc.SetNull();
+    StringStream s(json);
+    doc.template ParseStream<0>(s);
+    ParseCheck(doc);
+
+    doc.SetNull();
+    char *buffer = strdup(json);
+    doc.ParseInsitu(buffer);
+    ParseCheck(doc);
+    free(buffer);
+
+    // Parse(const Ch*, size_t)
+    size_t length = strlen(json);
+    buffer = reinterpret_cast<char*>(malloc(length * 2));
+    memcpy(buffer, json, length);
+    memset(buffer + length, 'X', length);
+#if RAPIDJSON_HAS_STDSTRING
+    std::string s2(buffer, length); // backup buffer
+#endif
+    doc.SetNull();
+    doc.Parse(buffer, length);
+    free(buffer);
+    ParseCheck(doc);
+
+#if RAPIDJSON_HAS_STDSTRING
+    // Parse(std::string)
+    doc.SetNull();
+    doc.Parse(s2);
+    ParseCheck(doc);
+#endif
+}
+
+TEST(Document, Parse) {
+    ParseTest<MemoryPoolAllocator<>, CrtAllocator>();
+    ParseTest<MemoryPoolAllocator<>, MemoryPoolAllocator<> >();
+    ParseTest<CrtAllocator, MemoryPoolAllocator<> >();
+    ParseTest<CrtAllocator, CrtAllocator>();
+}
+
+TEST(Document, UnchangedOnParseError) {
+    Document doc;
+    doc.SetArray().PushBack(0, doc.GetAllocator());
+
+    ParseResult err = doc.Parse("{]");
+    EXPECT_TRUE(doc.HasParseError());
+    EXPECT_EQ(err.Code(), doc.GetParseError());
+    EXPECT_EQ(err.Offset(), doc.GetErrorOffset());
+    EXPECT_TRUE(doc.IsArray());
+    EXPECT_EQ(doc.Size(), 1u);
+
+    err = doc.Parse("{}");
+    EXPECT_FALSE(doc.HasParseError());
+    EXPECT_FALSE(err.IsError());
+    EXPECT_EQ(err.Code(), doc.GetParseError());
+    EXPECT_EQ(err.Offset(), doc.GetErrorOffset());
+    EXPECT_TRUE(doc.IsObject());
+    EXPECT_EQ(doc.MemberCount(), 0u);
+}
+
+static FILE* OpenEncodedFile(const char* filename) {
+    const char *paths[] = {
+        "encodings",
+        "bin/encodings",
+        "../bin/encodings",
+        "../../bin/encodings",
+        "../../../bin/encodings"
+    };
+    char buffer[1024];
+    for (size_t i = 0; i < sizeof(paths) / sizeof(paths[0]); i++) {
+        sprintf(buffer, "%s/%s", paths[i], filename);
+        FILE *fp = fopen(buffer, "rb");
+        if (fp)
+            return fp;
+    }
+    return 0;
+}
+
+TEST(Document, Parse_Encoding) {
+    const char* json = " { \"hello\" : \"world\", \"t\" : true , \"f\" : false, \"n\": null, \"i\":123, \"pi\": 3.1416, \"a\":[1, 2, 3, 4] } ";
+
+    typedef GenericDocument<UTF16<> > DocumentType;
+    DocumentType doc;
+    
+    // Parse<unsigned, SourceEncoding>(const SourceEncoding::Ch*)
+    // doc.Parse<kParseDefaultFlags, UTF8<> >(json);
+    // EXPECT_FALSE(doc.HasParseError());
+    // EXPECT_EQ(0, StrCmp(doc[L"hello"].GetString(), L"world"));
+
+    // Parse<unsigned, SourceEncoding>(const SourceEncoding::Ch*, size_t)
+    size_t length = strlen(json);
+    char* buffer = reinterpret_cast<char*>(malloc(length * 2));
+    memcpy(buffer, json, length);
+    memset(buffer + length, 'X', length);
+#if RAPIDJSON_HAS_STDSTRING
+    std::string s2(buffer, length); // backup buffer
+#endif
+    doc.SetNull();
+    doc.Parse<kParseDefaultFlags, UTF8<> >(buffer, length);
+    free(buffer);
+    EXPECT_FALSE(doc.HasParseError());
+    if (doc.HasParseError())
+        printf("Error: %d at %zu\n", static_cast<int>(doc.GetParseError()), doc.GetErrorOffset());
+    EXPECT_EQ(0, StrCmp(doc[L"hello"].GetString(), L"world"));
+
+#if RAPIDJSON_HAS_STDSTRING
+    // Parse<unsigned, SourceEncoding>(std::string)
+    doc.SetNull();
+
+#if defined(_MSC_VER) && _MSC_VER < 1800
+    doc.Parse<kParseDefaultFlags, UTF8<> >(s2.c_str()); // VS2010 or below cannot handle templated function overloading. Use const char* instead.
+#else
+    doc.Parse<kParseDefaultFlags, UTF8<> >(s2);
+#endif
+    EXPECT_FALSE(doc.HasParseError());
+    EXPECT_EQ(0, StrCmp(doc[L"hello"].GetString(), L"world"));
+#endif
+}
+
+TEST(Document, ParseStream_EncodedInputStream) {
+    // UTF8 -> UTF16
+    FILE* fp = OpenEncodedFile("utf8.json");
+    char buffer[256];
+    FileReadStream bis(fp, buffer, sizeof(buffer));
+    EncodedInputStream<UTF8<>, FileReadStream> eis(bis);
+
+    GenericDocument<UTF16<> > d;
+    d.ParseStream<0, UTF8<> >(eis);
+    EXPECT_FALSE(d.HasParseError());
+
+    fclose(fp);
+
+    wchar_t expected[] = L"I can eat glass and it doesn't hurt me.";
+    GenericValue<UTF16<> >& v = d[L"en"];
+    EXPECT_TRUE(v.IsString());
+    EXPECT_EQ(sizeof(expected) / sizeof(wchar_t) - 1, v.GetStringLength());
+    EXPECT_EQ(0, StrCmp(expected, v.GetString()));
+
+    // UTF16 -> UTF8 in memory
+    StringBuffer bos;
+    typedef EncodedOutputStream<UTF8<>, StringBuffer> OutputStream;
+    OutputStream eos(bos, false);   // Not writing BOM
+    {
+        Writer<OutputStream, UTF16<>, UTF8<> > writer(eos);
+        d.Accept(writer);
+    }
+
+    // Condense the original file and compare.
+    fp = OpenEncodedFile("utf8.json");
+    FileReadStream is(fp, buffer, sizeof(buffer));
+    Reader reader;
+    StringBuffer bos2;
+    Writer<StringBuffer> writer2(bos2);
+    reader.Parse(is, writer2);
+    fclose(fp);
+
+    EXPECT_EQ(bos.GetSize(), bos2.GetSize());
+    EXPECT_EQ(0, memcmp(bos.GetString(), bos2.GetString(), bos2.GetSize()));
+}
+
+TEST(Document, ParseStream_AutoUTFInputStream) {
+    // Any -> UTF8
+    FILE* fp = OpenEncodedFile("utf32be.json");
+    char buffer[256];
+    FileReadStream bis(fp, buffer, sizeof(buffer));
+    AutoUTFInputStream<unsigned, FileReadStream> eis(bis);
+
+    Document d;
+    d.ParseStream<0, AutoUTF<unsigned> >(eis);
+    EXPECT_FALSE(d.HasParseError());
+
+    fclose(fp);
+
+    char expected[] = "I can eat glass and it doesn't hurt me.";
+    Value& v = d["en"];
+    EXPECT_TRUE(v.IsString());
+    EXPECT_EQ(sizeof(expected) - 1, v.GetStringLength());
+    EXPECT_EQ(0, StrCmp(expected, v.GetString()));
+
+    // UTF8 -> UTF8 in memory
+    StringBuffer bos;
+    Writer<StringBuffer> writer(bos);
+    d.Accept(writer);
+
+    // Condense the original file and compare.
+    fp = OpenEncodedFile("utf8.json");
+    FileReadStream is(fp, buffer, sizeof(buffer));
+    Reader reader;
+    StringBuffer bos2;
+    Writer<StringBuffer> writer2(bos2);
+    reader.Parse(is, writer2);
+    fclose(fp);
+
+    EXPECT_EQ(bos.GetSize(), bos2.GetSize());
+    EXPECT_EQ(0, memcmp(bos.GetString(), bos2.GetString(), bos2.GetSize()));
+}
+
+TEST(Document, Swap) {
+    Document d1;
+    Document::AllocatorType& a = d1.GetAllocator();
+
+    d1.SetArray().PushBack(1, a).PushBack(2, a);
+
+    Value o;
+    o.SetObject().AddMember("a", 1, a);
+
+    // Swap between Document and Value
+    // d1.Swap(o); // doesn't compile
+    o.Swap(d1);
+    EXPECT_TRUE(d1.IsObject());
+    EXPECT_TRUE(o.IsArray());
+
+    // Swap between Document and Document
+    Document d2;
+    d2.SetArray().PushBack(3, a);
+    d1.Swap(d2);
+    EXPECT_TRUE(d1.IsArray());
+    EXPECT_TRUE(d2.IsObject());
+    EXPECT_EQ(&d2.GetAllocator(), &a);
+
+    // reset value
+    Value().Swap(d1);
+    EXPECT_TRUE(d1.IsNull());
+
+    // reset document, including allocator
+    Document().Swap(d2);
+    EXPECT_TRUE(d2.IsNull());
+    EXPECT_NE(&d2.GetAllocator(), &a);
+
+    // testing std::swap compatibility
+    d1.SetBool(true);
+    using std::swap;
+    swap(d1, d2);
+    EXPECT_TRUE(d1.IsNull());
+    EXPECT_TRUE(d2.IsTrue());
+
+    swap(o, d2);
+    EXPECT_TRUE(o.IsTrue());
+    EXPECT_TRUE(d2.IsArray());
+}
+
+
+// This should be slow due to assignment in inner-loop.
+struct OutputStringStream : public std::ostringstream {
+    typedef char Ch;
+
+    virtual ~OutputStringStream();
+
+    void Put(char c) {
+        put(c);
+    }
+    void Flush() {}
+};
+
+OutputStringStream::~OutputStringStream() {}
+
+TEST(Document, AcceptWriter) {
+    Document doc;
+    doc.Parse(" { \"hello\" : \"world\", \"t\" : true , \"f\" : false, \"n\": null, \"i\":123, \"pi\": 3.1416, \"a\":[1, 2, 3, 4] } ");
+
+    OutputStringStream os;
+    Writer<OutputStringStream> writer(os);
+    doc.Accept(writer);
+
+    EXPECT_EQ("{\"hello\":\"world\",\"t\":true,\"f\":false,\"n\":null,\"i\":123,\"pi\":3.1416,\"a\":[1,2,3,4]}", os.str());
+}
+
+TEST(Document, UserBuffer) {
+    typedef GenericDocument<UTF8<>, MemoryPoolAllocator<>, MemoryPoolAllocator<> > DocumentType;
+    char valueBuffer[4096];
+    char parseBuffer[1024];
+    MemoryPoolAllocator<> valueAllocator(valueBuffer, sizeof(valueBuffer));
+    MemoryPoolAllocator<> parseAllocator(parseBuffer, sizeof(parseBuffer));
+    DocumentType doc(&valueAllocator, sizeof(parseBuffer) / 2, &parseAllocator);
+    doc.Parse(" { \"hello\" : \"world\", \"t\" : true , \"f\" : false, \"n\": null, \"i\":123, \"pi\": 3.1416, \"a\":[1, 2, 3, 4] } ");
+    EXPECT_FALSE(doc.HasParseError());
+    EXPECT_LE(valueAllocator.Size(), sizeof(valueBuffer));
+    EXPECT_LE(parseAllocator.Size(), sizeof(parseBuffer));
+
+    // Cover MemoryPoolAllocator::Capacity()
+    EXPECT_LE(valueAllocator.Size(), valueAllocator.Capacity());
+    EXPECT_LE(parseAllocator.Size(), parseAllocator.Capacity());
+}
+
+// Issue 226: Value of string type should not point to NULL
+TEST(Document, AssertAcceptInvalidNameType) {
+    Document doc;
+    doc.SetObject();
+    doc.AddMember("a", 0, doc.GetAllocator());
+    doc.FindMember("a")->name.SetNull(); // Change name to non-string type.
+
+    OutputStringStream os;
+    Writer<OutputStringStream> writer(os);
+    ASSERT_THROW(doc.Accept(writer), AssertException);
+}
+
+// Issue 44:    SetStringRaw doesn't work with wchar_t
+TEST(Document, UTF16_Document) {
+    GenericDocument< UTF16<> > json;
+    json.Parse<kParseValidateEncodingFlag>(L"[{\"created_at\":\"Wed Oct 30 17:13:20 +0000 2012\"}]");
+
+    ASSERT_TRUE(json.IsArray());
+    GenericValue< UTF16<> >& v = json[0];
+    ASSERT_TRUE(v.IsObject());
+
+    GenericValue< UTF16<> >& s = v[L"created_at"];
+    ASSERT_TRUE(s.IsString());
+
+    EXPECT_EQ(0, memcmp(L"Wed Oct 30 17:13:20 +0000 2012", s.GetString(), (s.GetStringLength() + 1) * sizeof(wchar_t)));
+}
+
+#if RAPIDJSON_HAS_CXX11_RVALUE_REFS
+
+#if 0 // Many old compiler does not support these. Turn it off temporaily.
+
+#include <type_traits>
+
+TEST(Document, Traits) {
+    static_assert(std::is_constructible<Document>::value, "");
+    static_assert(std::is_default_constructible<Document>::value, "");
+#ifndef _MSC_VER
+    static_assert(!std::is_copy_constructible<Document>::value, "");
+#endif
+    static_assert(std::is_move_constructible<Document>::value, "");
+
+    static_assert(!std::is_nothrow_constructible<Document>::value, "");
+    static_assert(!std::is_nothrow_default_constructible<Document>::value, "");
+#ifndef _MSC_VER
+    static_assert(!std::is_nothrow_copy_constructible<Document>::value, "");
+    static_assert(std::is_nothrow_move_constructible<Document>::value, "");
+#endif
+
+    static_assert(std::is_assignable<Document,Document>::value, "");
+#ifndef _MSC_VER
+  static_assert(!std::is_copy_assignable<Document>::value, "");
+#endif
+    static_assert(std::is_move_assignable<Document>::value, "");
+
+#ifndef _MSC_VER
+    static_assert(std::is_nothrow_assignable<Document, Document>::value, "");
+#endif
+    static_assert(!std::is_nothrow_copy_assignable<Document>::value, "");
+#ifndef _MSC_VER
+    static_assert(std::is_nothrow_move_assignable<Document>::value, "");
+#endif
+
+    static_assert( std::is_destructible<Document>::value, "");
+#ifndef _MSC_VER
+    static_assert(std::is_nothrow_destructible<Document>::value, "");
+#endif
+}
+
+#endif
+
+template <typename Allocator>
+struct DocumentMove: public ::testing::Test {
+};
+
+typedef ::testing::Types< CrtAllocator, MemoryPoolAllocator<> > MoveAllocatorTypes;
+TYPED_TEST_CASE(DocumentMove, MoveAllocatorTypes);
+
+TYPED_TEST(DocumentMove, MoveConstructor) {
+    typedef TypeParam Allocator;
+    typedef GenericDocument<UTF8<>, Allocator> D;
+    Allocator allocator;
+
+    D a(&allocator);
+    a.Parse("[\"one\", \"two\", \"three\"]");
+    EXPECT_FALSE(a.HasParseError());
+    EXPECT_TRUE(a.IsArray());
+    EXPECT_EQ(3u, a.Size());
+    EXPECT_EQ(&a.GetAllocator(), &allocator);
+
+    // Document b(a); // does not compile (!is_copy_constructible)
+    D b(std::move(a));
+    EXPECT_TRUE(a.IsNull());
+    EXPECT_TRUE(b.IsArray());
+    EXPECT_EQ(3u, b.Size());
+    EXPECT_THROW(a.GetAllocator(), AssertException);
+    EXPECT_EQ(&b.GetAllocator(), &allocator);
+
+    b.Parse("{\"Foo\": \"Bar\", \"Baz\": 42}");
+    EXPECT_FALSE(b.HasParseError());
+    EXPECT_TRUE(b.IsObject());
+    EXPECT_EQ(2u, b.MemberCount());
+
+    // Document c = a; // does not compile (!is_copy_constructible)
+    D c = std::move(b);
+    EXPECT_TRUE(b.IsNull());
+    EXPECT_TRUE(c.IsObject());
+    EXPECT_EQ(2u, c.MemberCount());
+    EXPECT_THROW(b.GetAllocator(), AssertException);
+    EXPECT_EQ(&c.GetAllocator(), &allocator);
+}
+
+TYPED_TEST(DocumentMove, MoveConstructorParseError) {
+    typedef TypeParam Allocator;
+    typedef GenericDocument<UTF8<>, Allocator> D;
+
+    ParseResult noError;
+    D a;
+    a.Parse("{ 4 = 4]");
+    ParseResult error(a.GetParseError(), a.GetErrorOffset());
+    EXPECT_TRUE(a.HasParseError());
+    EXPECT_NE(error.Code(), noError.Code());
+    EXPECT_NE(error.Offset(), noError.Offset());
+
+    D b(std::move(a));
+    EXPECT_FALSE(a.HasParseError());
+    EXPECT_TRUE(b.HasParseError());
+    EXPECT_EQ(a.GetParseError(), noError.Code());
+    EXPECT_EQ(b.GetParseError(), error.Code());
+    EXPECT_EQ(a.GetErrorOffset(), noError.Offset());
+    EXPECT_EQ(b.GetErrorOffset(), error.Offset());
+
+    D c(std::move(b));
+    EXPECT_FALSE(b.HasParseError());
+    EXPECT_TRUE(c.HasParseError());
+    EXPECT_EQ(b.GetParseError(), noError.Code());
+    EXPECT_EQ(c.GetParseError(), error.Code());
+    EXPECT_EQ(b.GetErrorOffset(), noError.Offset());
+    EXPECT_EQ(c.GetErrorOffset(), error.Offset());
+}
+
+// This test does not properly use parsing, just for testing.
+// It must call ClearStack() explicitly to prevent memory leak.
+// But here we cannot as ClearStack() is private.
+#if 0
+TYPED_TEST(DocumentMove, MoveConstructorStack) {
+    typedef TypeParam Allocator;
+    typedef UTF8<> Encoding;
+    typedef GenericDocument<Encoding, Allocator> Document;
+
+    Document a;
+    size_t defaultCapacity = a.GetStackCapacity();
+
+    // Trick Document into getting GetStackCapacity() to return non-zero
+    typedef GenericReader<Encoding, Encoding, Allocator> Reader;
+    Reader reader(&a.GetAllocator());
+    GenericStringStream<Encoding> is("[\"one\", \"two\", \"three\"]");
+    reader.template Parse<kParseDefaultFlags>(is, a);
+    size_t capacity = a.GetStackCapacity();
+    EXPECT_GT(capacity, 0u);
+
+    Document b(std::move(a));
+    EXPECT_EQ(a.GetStackCapacity(), defaultCapacity);
+    EXPECT_EQ(b.GetStackCapacity(), capacity);
+
+    Document c = std::move(b);
+    EXPECT_EQ(b.GetStackCapacity(), defaultCapacity);
+    EXPECT_EQ(c.GetStackCapacity(), capacity);
+}
+#endif
+
+TYPED_TEST(DocumentMove, MoveAssignment) {
+    typedef TypeParam Allocator;
+    typedef GenericDocument<UTF8<>, Allocator> D;
+    Allocator allocator;
+
+    D a(&allocator);
+    a.Parse("[\"one\", \"two\", \"three\"]");
+    EXPECT_FALSE(a.HasParseError());
+    EXPECT_TRUE(a.IsArray());
+    EXPECT_EQ(3u, a.Size());
+    EXPECT_EQ(&a.GetAllocator(), &allocator);
+
+    // Document b; b = a; // does not compile (!is_copy_assignable)
+    D b;
+    b = std::move(a);
+    EXPECT_TRUE(a.IsNull());
+    EXPECT_TRUE(b.IsArray());
+    EXPECT_EQ(3u, b.Size());
+    EXPECT_THROW(a.GetAllocator(), AssertException);
+    EXPECT_EQ(&b.GetAllocator(), &allocator);
+
+    b.Parse("{\"Foo\": \"Bar\", \"Baz\": 42}");
+    EXPECT_FALSE(b.HasParseError());
+    EXPECT_TRUE(b.IsObject());
+    EXPECT_EQ(2u, b.MemberCount());
+
+    // Document c; c = a; // does not compile (see static_assert)
+    D c;
+    c = std::move(b);
+    EXPECT_TRUE(b.IsNull());
+    EXPECT_TRUE(c.IsObject());
+    EXPECT_EQ(2u, c.MemberCount());
+    EXPECT_THROW(b.GetAllocator(), AssertException);
+    EXPECT_EQ(&c.GetAllocator(), &allocator);
+}
+
+TYPED_TEST(DocumentMove, MoveAssignmentParseError) {
+    typedef TypeParam Allocator;
+    typedef GenericDocument<UTF8<>, Allocator> D;
+
+    ParseResult noError;
+    D a;
+    a.Parse("{ 4 = 4]");
+    ParseResult error(a.GetParseError(), a.GetErrorOffset());
+    EXPECT_TRUE(a.HasParseError());
+    EXPECT_NE(error.Code(), noError.Code());
+    EXPECT_NE(error.Offset(), noError.Offset());
+
+    D b;
+    b = std::move(a);
+    EXPECT_FALSE(a.HasParseError());
+    EXPECT_TRUE(b.HasParseError());
+    EXPECT_EQ(a.GetParseError(), noError.Code());
+    EXPECT_EQ(b.GetParseError(), error.Code());
+    EXPECT_EQ(a.GetErrorOffset(), noError.Offset());
+    EXPECT_EQ(b.GetErrorOffset(), error.Offset());
+
+    D c;
+    c = std::move(b);
+    EXPECT_FALSE(b.HasParseError());
+    EXPECT_TRUE(c.HasParseError());
+    EXPECT_EQ(b.GetParseError(), noError.Code());
+    EXPECT_EQ(c.GetParseError(), error.Code());
+    EXPECT_EQ(b.GetErrorOffset(), noError.Offset());
+    EXPECT_EQ(c.GetErrorOffset(), error.Offset());
+}
+
+// This test does not properly use parsing, just for testing.
+// It must call ClearStack() explicitly to prevent memory leak.
+// But here we cannot as ClearStack() is private.
+#if 0
+TYPED_TEST(DocumentMove, MoveAssignmentStack) {
+    typedef TypeParam Allocator;
+    typedef UTF8<> Encoding;
+    typedef GenericDocument<Encoding, Allocator> D;
+
+    D a;
+    size_t defaultCapacity = a.GetStackCapacity();
+
+    // Trick Document into getting GetStackCapacity() to return non-zero
+    typedef GenericReader<Encoding, Encoding, Allocator> Reader;
+    Reader reader(&a.GetAllocator());
+    GenericStringStream<Encoding> is("[\"one\", \"two\", \"three\"]");
+    reader.template Parse<kParseDefaultFlags>(is, a);
+    size_t capacity = a.GetStackCapacity();
+    EXPECT_GT(capacity, 0u);
+
+    D b;
+    b = std::move(a);
+    EXPECT_EQ(a.GetStackCapacity(), defaultCapacity);
+    EXPECT_EQ(b.GetStackCapacity(), capacity);
+
+    D c;
+    c = std::move(b);
+    EXPECT_EQ(b.GetStackCapacity(), defaultCapacity);
+    EXPECT_EQ(c.GetStackCapacity(), capacity);
+}
+#endif
+
+#endif // RAPIDJSON_HAS_CXX11_RVALUE_REFS
+
+// Issue 22: Memory corruption via operator=
+// Fixed by making unimplemented assignment operator private.
+//TEST(Document, Assignment) {
+//  Document d1;
+//  Document d2;
+//  d1 = d2;
+//}
+
+#ifdef __clang__
+RAPIDJSON_DIAG_POP
+#endif