From a9bdb74c0309fca470abdaabbddea84798cbaa83 Mon Sep 17 00:00:00 2001
From: Luboš Luňák <l.lunak@collabora.com>
Date: Tue, 9 Mar 2021 12:54:40 +0100
Subject: test gif-in-png Microsoft extension
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Based on document from tdf#92643.

Change-Id: I0837562da121e805d011f88ffe4a678e75ca441c
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/112202
Tested-by: Jenkins
Reviewed-by: Luboš Luňák <l.lunak@collabora.com>
---
 vcl/qa/cppunit/png/PngFilterTest.cxx |  17 +++++++++++++++++
 vcl/qa/cppunit/png/data/ms-gif.png   | Bin 0 -> 15901 bytes
 2 files changed, 17 insertions(+)
 create mode 100644 vcl/qa/cppunit/png/data/ms-gif.png

(limited to 'vcl/qa/cppunit')

diff --git a/vcl/qa/cppunit/png/PngFilterTest.cxx b/vcl/qa/cppunit/png/PngFilterTest.cxx
index 28e6c719f6fd..3b02e1135504 100644
--- a/vcl/qa/cppunit/png/PngFilterTest.cxx
+++ b/vcl/qa/cppunit/png/PngFilterTest.cxx
@@ -26,6 +26,7 @@
 #include <vcl/filter/PngImageReader.hxx>
 #include <vcl/BitmapReadAccess.hxx>
 #include <vcl/alpha.hxx>
+#include <vcl/graphicfilter.hxx>
 
 using namespace css;
 
@@ -46,9 +47,11 @@ public:
     }
 
     void testPng();
+    void testMsGifInPng();
 
     CPPUNIT_TEST_SUITE(PngFilterTest);
     CPPUNIT_TEST(testPng);
+    CPPUNIT_TEST(testMsGifInPng);
     CPPUNIT_TEST_SUITE_END();
 };
 
@@ -222,6 +225,20 @@ void PngFilterTest::testPng()
     }
 }
 
+void PngFilterTest::testMsGifInPng()
+{
+    Graphic aGraphic;
+    const OUString aURL(getFullUrl(u"ms-gif.png"));
+    SvFileStream aFileStream(aURL, StreamMode::READ);
+    GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
+    ErrCode aResult = rFilter.ImportGraphic(aGraphic, aURL, aFileStream);
+    CPPUNIT_ASSERT_EQUAL(ERRCODE_NONE, aResult);
+    CPPUNIT_ASSERT(aGraphic.IsGfxLink());
+    // The image is technically a PNG, but it has an animated Gif as a chunk (Microsoft extension).
+    CPPUNIT_ASSERT_EQUAL(GfxLinkType::NativeGif, aGraphic.GetSharedGfxLink()->GetType());
+    CPPUNIT_ASSERT(aGraphic.IsAnimated());
+}
+
 CPPUNIT_TEST_SUITE_REGISTRATION(PngFilterTest);
 
 CPPUNIT_PLUGIN_IMPLEMENT();
diff --git a/vcl/qa/cppunit/png/data/ms-gif.png b/vcl/qa/cppunit/png/data/ms-gif.png
new file mode 100644
index 000000000000..1f683241f53f
Binary files /dev/null and b/vcl/qa/cppunit/png/data/ms-gif.png differ
-- 
cgit