[WINDOWSCODECS_WINETEST] Sync with Wine Staging 1.7.55. CORE-10536

[reactos.git] / rostests / winetests / windowscodecs / pngformat.c

diff --git a/rostests/winetests/windowscodecs/pngformat.c b/rostests/winetests/windowscodecs/pngformat.c
index 7b1ccd5..6a9427b 100644 (file)
--- a/rostests/winetests/windowscodecs/pngformat.c
+++ b/rostests/winetests/windowscodecs/pngformat.c
@@ -289,6 +289,7 @@ static IWICBitmapDecoder *create_decoder(const void *image_data, UINT image_size
     IWICBitmapDecoder *decoder = NULL;
     IStream *stream;
     GUID format;
+    LONG refcount;
 
     hmem = GlobalAlloc(0, image_size);
     data = GlobalLock(hmem);
@@ -300,13 +301,15 @@ static IWICBitmapDecoder *create_decoder(const void *image_data, UINT image_size
 
     hr = IWICImagingFactory_CreateDecoderFromStream(factory, stream, NULL, 0, &decoder);
     ok(hr == S_OK, "CreateDecoderFromStream error %#x\n", hr);
+    if (FAILED(hr)) return NULL;
 
     hr = IWICBitmapDecoder_GetContainerFormat(decoder, &format);
     ok(hr == S_OK, "GetContainerFormat error %#x\n", hr);
     ok(IsEqualGUID(&format, &GUID_ContainerFormatPng),
        "wrong container format %s\n", wine_dbgstr_guid(&format));
 
-    IStream_Release(stream);
+    refcount = IStream_Release(stream);
+    ok(refcount > 0, "expected stream refcount > 0\n");
 
     return decoder;
 }
@@ -346,6 +349,7 @@ static void test_color_contexts(void)
 
     decoder = create_decoder(png_no_color_profile, sizeof(png_no_color_profile));
     ok(decoder != 0, "Failed to load PNG image data\n");
+    if (!decoder) return;
 
     /* global color context */
     hr = IWICBitmapDecoder_GetColorContexts(decoder, 0, NULL, NULL);
@@ -373,6 +377,7 @@ static void test_color_contexts(void)
 
     decoder = create_decoder(png_color_profile, sizeof(png_color_profile));
     ok(decoder != 0, "Failed to load PNG image data\n");
+    if (!decoder) return;
 
     /* global color context */
     count = 0xdeadbeef;
@@ -550,6 +555,7 @@ static void test_png_palette(void)
 
     decoder = create_decoder(png_PLTE_tRNS, sizeof(png_PLTE_tRNS));
     ok(decoder != 0, "Failed to load PNG image data\n");
+    if (!decoder) return;
 
     hr = IWICBitmapDecoder_GetFrame(decoder, 0, &frame);
     ok(hr == S_OK, "GetFrame error %#x\n", hr);