dlls/xmllite/tests/writer.c

/*
 * XMLLite IXmlWriter tests
 *
 * Copyright 2011 (C) Alistair Leslie-Hughes
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */
#define COBJMACROS

#include <stdarg.h>
#include <stdio.h>

#include "windef.h"
#include "winbase.h"
#include "ole2.h"
#include "xmllite.h"
#include "wine/test.h"

#include "initguid.h"
DEFINE_GUID(IID_IXmlWriterOutput, 0xc1131708, 0x0f59, 0x477f, 0x93, 0x59, 0x7d, 0x33, 0x24, 0x51, 0xbc, 0x1a);

static HRESULT (WINAPI *pCreateXmlWriter)(REFIID riid, void **ppvObject, IMalloc *pMalloc);
static HRESULT (WINAPI *pCreateXmlWriterOutputWithEncodingName)(IUnknown *stream,
                                                                IMalloc *imalloc,
                                                                LPCWSTR encoding_name,
                                                                IXmlWriterOutput **output);
static HRESULT (WINAPI *pCreateXmlWriterOutputWithEncodingCodePage)(IUnknown *stream,
                                                                    IMalloc *imalloc,
                                                                    UINT codepage,
                                                                    IXmlWriterOutput **output);

static HRESULT WINAPI testoutput_QueryInterface(IUnknown *iface, REFIID riid, void **obj)
{
    if (IsEqualGUID(riid, &IID_IUnknown)) {
        *obj = iface;
        return S_OK;
    }
    else {
        ok(0, "unknown riid=%s\n", wine_dbgstr_guid(riid));
        return E_NOINTERFACE;
    }
}

static ULONG WINAPI testoutput_AddRef(IUnknown *iface)
{
    return 2;
}

static ULONG WINAPI testoutput_Release(IUnknown *iface)
{
    return 1;
}

static const IUnknownVtbl testoutputvtbl = {
    testoutput_QueryInterface,
    testoutput_AddRef,
    testoutput_Release
};

static IUnknown testoutput = { &testoutputvtbl };

static HRESULT WINAPI teststream_QueryInterface(ISequentialStream *iface, REFIID riid, void **obj)
{
    if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_ISequentialStream))
    {
        *obj = iface;
        return S_OK;
    }

    *obj = NULL;
    return E_NOINTERFACE;
}

static ULONG WINAPI teststream_AddRef(ISequentialStream *iface)
{
    return 2;
}

static ULONG WINAPI teststream_Release(ISequentialStream *iface)
{
    return 1;
}

static HRESULT WINAPI teststream_Read(ISequentialStream *iface, void *pv, ULONG cb, ULONG *pread)
{
    ok(0, "unexpected call\n");
    return E_NOTIMPL;
}

static ULONG g_write_len;
static HRESULT WINAPI teststream_Write(ISequentialStream *iface, const void *pv, ULONG cb, ULONG *written)
{
    g_write_len = cb;
    *written = cb;
    return S_OK;
}

static const ISequentialStreamVtbl teststreamvtbl =
{
    teststream_QueryInterface,
    teststream_AddRef,
    teststream_Release,
    teststream_Read,
    teststream_Write
};

static ISequentialStream teststream = { &teststreamvtbl };

static void test_writer_create(void)
{
    HRESULT hr;
    IXmlWriter *writer;
    LONG_PTR value;

    /* crashes native */
    if (0)
    {
        pCreateXmlWriter(&IID_IXmlWriter, NULL, NULL);
        pCreateXmlWriter(NULL, (void**)&writer, NULL);
    }

    hr = pCreateXmlWriter(&IID_IXmlWriter, (void**)&writer, NULL);
    ok(hr == S_OK, "Expected S_OK, got %08x\n", hr);

    /* check default properties values */
    value = 0;
    hr = IXmlWriter_GetProperty(writer, XmlWriterProperty_ByteOrderMark, &value);
    ok(hr == S_OK, "Expected S_OK, got %08x\n", hr);
    ok(value == TRUE, "got %ld\n", value);

    value = TRUE;
    hr = IXmlWriter_GetProperty(writer, XmlWriterProperty_Indent, &value);
    ok(hr == S_OK, "Expected S_OK, got %08x\n", hr);
    ok(value == FALSE, "got %ld\n", value);

    value = TRUE;
    hr = IXmlWriter_GetProperty(writer, XmlWriterProperty_OmitXmlDeclaration, &value);
    ok(hr == S_OK, "Expected S_OK, got %08x\n", hr);
    ok(value == FALSE, "got %ld\n", value);

    value = XmlConformanceLevel_Auto;
    hr = IXmlWriter_GetProperty(writer, XmlWriterProperty_ConformanceLevel, &value);
    ok(hr == S_OK, "Expected S_OK, got %08x\n", hr);
    ok(value == XmlConformanceLevel_Document, "got %ld\n", value);

    IXmlWriter_Release(writer);
}

static BOOL init_pointers(void)
{
    /* don't free module here, it's to be unloaded on exit */
    HMODULE mod = LoadLibraryA("xmllite.dll");

    if (!mod)
    {
        win_skip("xmllite library not available\n");
        return FALSE;
    }

#define MAKEFUNC(f) if (!(p##f = (void*)GetProcAddress(mod, #f))) return FALSE;
    MAKEFUNC(CreateXmlWriter);
    MAKEFUNC(CreateXmlWriterOutputWithEncodingName);
    MAKEFUNC(CreateXmlWriterOutputWithEncodingCodePage);
#undef MAKEFUNC

    return TRUE;
}

static void test_writeroutput(void)
{
    static const WCHAR utf16W[] = {'u','t','f','-','1','6',0};
    IXmlWriterOutput *output;
    IUnknown *unk;
    HRESULT hr;

    output = NULL;
    hr = pCreateXmlWriterOutputWithEncodingName(&testoutput, NULL, NULL, &output);
    ok(hr == S_OK, "got %08x\n", hr);
    IUnknown_Release(output);

    hr = pCreateXmlWriterOutputWithEncodingName(&testoutput, NULL, utf16W, &output);
    ok(hr == S_OK, "got %08x\n", hr);
    unk = NULL;
    hr = IUnknown_QueryInterface(output, &IID_IXmlWriterOutput, (void**)&unk);
    ok(hr == S_OK, "got %08x\n", hr);
    ok(unk != NULL, "got %p\n", unk);
    /* releasing 'unk' crashes on native */
    IUnknown_Release(output);

    output = NULL;
    hr = pCreateXmlWriterOutputWithEncodingCodePage(&testoutput, NULL, ~0u, &output);
    ok(hr == S_OK, "got %08x\n", hr);
    IUnknown_Release(output);

    hr = pCreateXmlWriterOutputWithEncodingCodePage(&testoutput, NULL, CP_UTF8, &output);
    ok(hr == S_OK, "got %08x\n", hr);
    unk = NULL;
    hr = IUnknown_QueryInterface(output, &IID_IXmlWriterOutput, (void**)&unk);
    ok(hr == S_OK, "got %08x\n", hr);
    ok(unk != NULL, "got %p\n", unk);
    /* releasing 'unk' crashes on native */
    IUnknown_Release(output);
}

static void test_writestartdocument(void)
{
    static const char fullprolog[] = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>";
    static const char prologversion[] = "<?xml version=\"1.0\"?>";
    static const WCHAR versionW[] = {'v','e','r','s','i','o','n','=','"','1','.','0','"',0};
    static const WCHAR xmlW[] = {'x','m','l',0};
    IXmlWriter *writer;
    HGLOBAL hglobal;
    IStream *stream;
    HRESULT hr;
    char *ptr;

    hr = pCreateXmlWriter(&IID_IXmlWriter, (void**)&writer, NULL);
    ok(hr == S_OK, "Expected S_OK, got %08x\n", hr);

    /* output not set */
    hr = IXmlWriter_WriteStartDocument(writer, XmlStandalone_Yes);
    ok(hr == E_UNEXPECTED, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteProcessingInstruction(writer, xmlW, versionW);
    ok(hr == E_UNEXPECTED, "got 0x%08x\n", hr);

    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = CreateStreamOnHGlobal(NULL, TRUE, &stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_SetOutput(writer, (IUnknown*)stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    /* nothing written yet */
    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartDocument(writer, XmlStandalone_Yes);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = GetHGlobalFromStream(stream, &hglobal);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    ptr = GlobalLock(hglobal);
    ok(!strncmp(ptr, fullprolog, strlen(fullprolog)), "got %s, expected %s\n", ptr, fullprolog);
    GlobalUnlock(hglobal);

    /* one more time */
    hr = IXmlWriter_WriteStartDocument(writer, XmlStandalone_Yes);
    ok(hr == WR_E_INVALIDACTION, "got 0x%08x\n", hr);
    IStream_Release(stream);

    /* now add PI manually, and try to start a document */
    hr = CreateStreamOnHGlobal(NULL, TRUE, &stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_SetOutput(writer, (IUnknown*)stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteProcessingInstruction(writer, xmlW, versionW);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartDocument(writer, XmlStandalone_Yes);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartDocument(writer, XmlStandalone_Yes);
    ok(hr == WR_E_INVALIDACTION, "got 0x%08x\n", hr);

    /* another attempt to add 'xml' PI */
    hr = IXmlWriter_WriteProcessingInstruction(writer, xmlW, versionW);
    ok(hr == WR_E_INVALIDACTION, "got 0x%08x\n", hr);

    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = GetHGlobalFromStream(stream, &hglobal);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    ptr = GlobalLock(hglobal);
    ok(!strncmp(ptr, prologversion, strlen(prologversion)), "got %s\n", ptr);
    GlobalUnlock(hglobal);

    IStream_Release(stream);
    IXmlWriter_Release(writer);
}

static void test_flush(void)
{
    IXmlWriter *writer;
    HRESULT hr;

    hr = pCreateXmlWriter(&IID_IXmlWriter, (void**)&writer, NULL);
    ok(hr == S_OK, "Expected S_OK, got %08x\n", hr);

    hr = IXmlWriter_SetOutput(writer, (IUnknown*)&teststream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartDocument(writer, XmlStandalone_Yes);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    g_write_len = 0;
    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);
    ok(g_write_len > 0, "got %d\n", g_write_len);

    g_write_len = 1;
    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);
    ok(g_write_len == 0, "got %d\n", g_write_len);

    /* Release() flushes too */
    g_write_len = 1;
    IXmlWriter_Release(writer);
    ok(g_write_len == 0, "got %d\n", g_write_len);
}

static void test_omitxmldeclaration(void)
{
    static const char prologversion[] = "<?xml version=\"1.0\"?>";
    static const WCHAR versionW[] = {'v','e','r','s','i','o','n','=','"','1','.','0','"',0};
    static const WCHAR xmlW[] = {'x','m','l',0};
    IXmlWriter *writer;
    HGLOBAL hglobal;
    IStream *stream;
    HRESULT hr;
    char *ptr;

    hr = pCreateXmlWriter(&IID_IXmlWriter, (void**)&writer, NULL);
    ok(hr == S_OK, "Expected S_OK, got %08x\n", hr);

    hr = CreateStreamOnHGlobal(NULL, TRUE, &stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_SetOutput(writer, (IUnknown*)stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_SetProperty(writer, XmlWriterProperty_OmitXmlDeclaration, TRUE);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartDocument(writer, XmlStandalone_Yes);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = GetHGlobalFromStream(stream, &hglobal);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    ptr = GlobalLock(hglobal);
    ok(!ptr, "got %p\n", ptr);
    GlobalUnlock(hglobal);

    /* one more time */
    hr = IXmlWriter_WriteStartDocument(writer, XmlStandalone_Yes);
    ok(hr == WR_E_INVALIDACTION, "got 0x%08x\n", hr);

    IStream_Release(stream);

    /* now add PI manually, and try to start a document */
    hr = CreateStreamOnHGlobal(NULL, TRUE, &stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_SetOutput(writer, (IUnknown*)stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteProcessingInstruction(writer, xmlW, versionW);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = GetHGlobalFromStream(stream, &hglobal);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    ptr = GlobalLock(hglobal);
    ok(!strncmp(ptr, prologversion, strlen(prologversion)), "got %s\n", ptr);
    GlobalUnlock(hglobal);

    hr = IXmlWriter_WriteStartDocument(writer, XmlStandalone_Yes);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    ptr = GlobalLock(hglobal);
    ok(!strncmp(ptr, prologversion, strlen(prologversion)), "got %s\n", ptr);
    GlobalUnlock(hglobal);

    hr = IXmlWriter_WriteStartDocument(writer, XmlStandalone_Yes);
    ok(hr == WR_E_INVALIDACTION, "got 0x%08x\n", hr);

    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    ptr = GlobalLock(hglobal);
    ok(!strncmp(ptr, prologversion, strlen(prologversion)), "got %s\n", ptr);
    GlobalUnlock(hglobal);

    /* another attempt to add 'xml' PI */
    hr = IXmlWriter_WriteProcessingInstruction(writer, xmlW, versionW);
    ok(hr == WR_E_INVALIDACTION, "got 0x%08x\n", hr);

    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    IStream_Release(stream);
    IXmlWriter_Release(writer);
}

static void test_bom(void)
{
    static const WCHAR versionW[] = {'v','e','r','s','i','o','n','=','"','1','.','0','"',0};
    static const WCHAR utf16W[] = {'u','t','f','-','1','6',0};
    static const WCHAR xmlW[] = {'x','m','l',0};
    static const WCHAR aW[] = {'a',0};
    IXmlWriterOutput *output;
    unsigned char *ptr;
    IXmlWriter *writer;
    IStream *stream;
    HGLOBAL hglobal;
    HRESULT hr;

    hr = CreateStreamOnHGlobal(NULL, TRUE, &stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = pCreateXmlWriterOutputWithEncodingName((IUnknown*)stream, NULL, utf16W, &output);
    ok(hr == S_OK, "got %08x\n", hr);

    hr = pCreateXmlWriter(&IID_IXmlWriter, (void**)&writer, NULL);
    ok(hr == S_OK, "Expected S_OK, got %08x\n", hr);

    hr = IXmlWriter_SetProperty(writer, XmlWriterProperty_OmitXmlDeclaration, TRUE);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_SetOutput(writer, output);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    /* BOM is on by default */
    hr = IXmlWriter_WriteStartDocument(writer, XmlStandalone_Yes);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = GetHGlobalFromStream(stream, &hglobal);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    ptr = GlobalLock(hglobal);
    ok(ptr[0] == 0xff && ptr[1] == 0xfe, "got %x,%x\n", ptr[0], ptr[1]);
    GlobalUnlock(hglobal);

    IStream_Release(stream);
    IUnknown_Release(output);

    /* start with PI */
    hr = CreateStreamOnHGlobal(NULL, TRUE, &stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = pCreateXmlWriterOutputWithEncodingName((IUnknown*)stream, NULL, utf16W, &output);
    ok(hr == S_OK, "got %08x\n", hr);

    hr = IXmlWriter_SetOutput(writer, output);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteProcessingInstruction(writer, xmlW, versionW);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = GetHGlobalFromStream(stream, &hglobal);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    ptr = GlobalLock(hglobal);
    ok(ptr[0] == 0xff && ptr[1] == 0xfe, "got %x,%x\n", ptr[0], ptr[1]);
    GlobalUnlock(hglobal);

    IUnknown_Release(output);
    IStream_Release(stream);

    /* start with element */
    hr = CreateStreamOnHGlobal(NULL, TRUE, &stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = pCreateXmlWriterOutputWithEncodingName((IUnknown*)stream, NULL, utf16W, &output);
    ok(hr == S_OK, "got %08x\n", hr);

    hr = IXmlWriter_SetOutput(writer, output);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartElement(writer, NULL, aW, NULL);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = GetHGlobalFromStream(stream, &hglobal);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    ptr = GlobalLock(hglobal);
    ok(ptr[0] == 0xff && ptr[1] == 0xfe, "got %x,%x\n", ptr[0], ptr[1]);
    GlobalUnlock(hglobal);

    IUnknown_Release(output);
    IStream_Release(stream);

    /* WriteElementString */
    hr = CreateStreamOnHGlobal(NULL, TRUE, &stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = pCreateXmlWriterOutputWithEncodingName((IUnknown*)stream, NULL, utf16W, &output);
    ok(hr == S_OK, "got %08x\n", hr);

    hr = IXmlWriter_SetOutput(writer, output);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteElementString(writer, NULL, aW, NULL, NULL);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = GetHGlobalFromStream(stream, &hglobal);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    ptr = GlobalLock(hglobal);
    ok(ptr[0] == 0xff && ptr[1] == 0xfe, "got %x,%x\n", ptr[0], ptr[1]);
    GlobalUnlock(hglobal);

    IUnknown_Release(output);
    IStream_Release(stream);

    IXmlWriter_Release(writer);
}

static void test_writestartelement(void)
{
    static const WCHAR valueW[] = {'v','a','l','u','e',0};
    static const char *str = "<a><b>value</b>";
    static const WCHAR aW[] = {'a',0};
    static const WCHAR bW[] = {'b',0};
    char *ptr;
    IXmlWriter *writer;
    IStream *stream;
    HGLOBAL hglobal;
    HRESULT hr;

    hr = CreateStreamOnHGlobal(NULL, TRUE, &stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = pCreateXmlWriter(&IID_IXmlWriter, (void**)&writer, NULL);
    ok(hr == S_OK, "Expected S_OK, got %08x\n", hr);

    hr = IXmlWriter_WriteStartElement(writer, NULL, aW, NULL);
    ok(hr == E_UNEXPECTED, "got 0x%08x\n", hr);

    hr = IXmlWriter_SetOutput(writer, (IUnknown*)stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartElement(writer, aW, NULL, NULL);
    ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartElement(writer, NULL, NULL, NULL);
    ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartElement(writer, NULL, NULL, aW);
    ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartElement(writer, NULL, aW, NULL);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = GetHGlobalFromStream(stream, &hglobal);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartDocument(writer, XmlStandalone_Yes);
    ok(hr == WR_E_INVALIDACTION, "got 0x%08x\n", hr);

    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    ptr = GlobalLock(hglobal);
    ok(!strncmp(ptr, "<a", 2), "got %s\n", ptr);
    GlobalUnlock(hglobal);

    hr = IXmlWriter_WriteStartDocument(writer, XmlStandalone_Yes);
    ok(hr == WR_E_INVALIDACTION, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartElement(writer, NULL, NULL, NULL);
    ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteProcessingInstruction(writer, aW, aW);
    ok(hr == WR_E_INVALIDACTION, "got 0x%08x\n", hr);

    IStream_Release(stream);
    IXmlWriter_Release(writer);

    /* WriteElementString */
    hr = pCreateXmlWriter(&IID_IXmlWriter, (void**)&writer, NULL);
    ok(hr == S_OK, "Expected S_OK, got %08x\n", hr);

    hr = CreateStreamOnHGlobal(NULL, TRUE, &stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteElementString(writer, NULL, bW, NULL, valueW);
    ok(hr == E_UNEXPECTED, "got 0x%08x\n", hr);

    hr = IXmlWriter_SetOutput(writer, (IUnknown*)stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartElement(writer, NULL, aW, NULL);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteElementString(writer, NULL, bW, NULL, valueW);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = GetHGlobalFromStream(stream, &hglobal);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    ptr = GlobalLock(hglobal);
    ok(!strncmp(ptr, str, strlen(str)), "got %s\n", ptr);
    GlobalUnlock(hglobal);

    IStream_Release(stream);
    IXmlWriter_Release(writer);
}

static void test_writeendelement(void)
{
    static const WCHAR aW[] = {'a',0};
    static const WCHAR bW[] = {'b',0};
    char *ptr;
    IXmlWriter *writer;
    IStream *stream;
    HGLOBAL hglobal;
    HRESULT hr;

    hr = CreateStreamOnHGlobal(NULL, TRUE, &stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = pCreateXmlWriter(&IID_IXmlWriter, (void**)&writer, NULL);
    ok(hr == S_OK, "Expected S_OK, got %08x\n", hr);

    hr = IXmlWriter_SetOutput(writer, (IUnknown*)stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartElement(writer, NULL, aW, NULL);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartElement(writer, NULL, bW, NULL);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteEndElement(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteEndElement(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = GetHGlobalFromStream(stream, &hglobal);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    ptr = GlobalLock(hglobal);
    ok(!strncmp(ptr, "<a><b /></a>", 12), "got %s\n", ptr);
    GlobalUnlock(hglobal);

    IXmlWriter_Release(writer);
    IStream_Release(stream);
}

static void test_writeenddocument(void)
{
    static const WCHAR aW[] = {'a',0};
    static const WCHAR bW[] = {'b',0};
    IXmlWriter *writer;
    IStream *stream;
    HGLOBAL hglobal;
    HRESULT hr;
    char *ptr;

    hr = CreateStreamOnHGlobal(NULL, TRUE, &stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = pCreateXmlWriter(&IID_IXmlWriter, (void**)&writer, NULL);
    ok(hr == S_OK, "Expected S_OK, got %08x\n", hr);

    hr = IXmlWriter_WriteEndDocument(writer);
    ok(hr == E_UNEXPECTED, "got 0x%08x\n", hr);

    hr = IXmlWriter_SetOutput(writer, (IUnknown*)stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    /* WriteEndDocument resets it to initial state */
    hr = IXmlWriter_WriteEndDocument(writer);
    ok(hr == WR_E_INVALIDACTION, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteEndDocument(writer);
    ok(hr == WR_E_INVALIDACTION, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartDocument(writer, XmlStandalone_Omit);
    ok(hr == WR_E_INVALIDACTION, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartElement(writer, NULL, aW, NULL);
    ok(hr == WR_E_INVALIDACTION, "got 0x%08x\n", hr);

    hr = IXmlWriter_SetOutput(writer, (IUnknown*)stream);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartElement(writer, NULL, aW, NULL);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteStartElement(writer, NULL, bW, NULL);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = IXmlWriter_WriteEndDocument(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    hr = GetHGlobalFromStream(stream, &hglobal);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    ptr = GlobalLock(hglobal);
    ok(ptr == NULL, "got %p\n", ptr);

    /* we still need to flush manually, WriteEndDocument doesn't do that */
    hr = IXmlWriter_Flush(writer);
    ok(hr == S_OK, "got 0x%08x\n", hr);

    ptr = GlobalLock(hglobal);
    ok(ptr != NULL, "got %p\n", ptr);
    ok(!strncmp(ptr, "<a><b /></a>", 12), "got %s\n", ptr);
    GlobalUnlock(hglobal);

    IXmlWriter_Release(writer);
    IStream_Release(stream);
}

START_TEST(writer)
{
    if (!init_pointers())
       return;

    test_writer_create();
    test_writeroutput();
    test_writestartdocument();
    test_writestartelement();
    test_writeendelement();
    test_flush();
    test_omitxmldeclaration();
    test_bom();
    test_writeenddocument();
}