Add a test for FPDFImageObj_GetBitmap() with a JBIG image.

The test expectations are for the current failure state.

BUG=pdfium:945

Change-Id: I1be503860b2ad5cbb0466793c9fa1438b3fc43d7
Reviewed-on: https://pdfium-review.googlesource.com/27770
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
diff --git a/fpdfsdk/fpdfedit_embeddertest.cpp b/fpdfsdk/fpdfedit_embeddertest.cpp
index 8c97d42..8754a66 100644
--- a/fpdfsdk/fpdfedit_embeddertest.cpp
+++ b/fpdfsdk/fpdfedit_embeddertest.cpp
@@ -1122,6 +1122,26 @@
   UnloadPage(page);
 }
 
+TEST_F(FPDFEditEmbeddertest, ExtractJBigImageBitmap) {
+  ASSERT_TRUE(OpenDocument("bug_631912.pdf"));
+  FPDF_PAGE page = LoadPage(0);
+  ASSERT_TRUE(page);
+  ASSERT_EQ(1, FPDFPage_CountObjects(page));
+
+  FPDF_PAGEOBJECT obj = FPDFPage_GetObject(page, 0);
+  ASSERT_EQ(FPDF_PAGEOBJ_IMAGE, FPDFPageObj_GetType(obj));
+  {
+    // TODO(bug_945): This should return a valid bitmap. This test should be
+    // able to successfully check |bitmap| using FPDFBitmap_GetFormat() and
+    // CompareBitmap().
+    std::unique_ptr<void, FPDFBitmapDeleter> bitmap(
+        FPDFImageObj_GetBitmap(obj));
+    ASSERT_FALSE(bitmap);
+  }
+
+  UnloadPage(page);
+}
+
 TEST_F(FPDFEditEmbeddertest, GetImageData) {
   EXPECT_TRUE(OpenDocument("embedded_images.pdf"));
   FPDF_PAGE page = LoadPage(0);