Reland of Add test for previously unflattenables (patchset #1 id:1 of https://codereview.chromium.org/1532753002/ )

Reason for revert:
The test should now be blacklisted.

Original issue's description:
> Revert of Add test for previously unflattenables (patchset #1 id:1 of https://codereview.chromium.org/1514373003/ )
>
> Reason for revert:
> Speculative fix for skbug.com/4709
>
> Original issue's description:
> > Add test for previously unflattenables
> >
> > BUG=skia:4613
> >
> > Committed: https://skia.googlesource.com/skia/+/061aaa79f7d8a2e93962e8296abaae13f0a7a715
>
> TBR=halcanary@google.com
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=skia:4613
>
> Committed: https://skia.googlesource.com/skia/+/c8f969309cafebeb16ad057f766b61bdc406a8b8

TBR=halcanary@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:4613

Review URL: https://codereview.chromium.org/1535143002

1 files changed, 42 insertions, 0 deletions

diff --git a/tests/FlattenableFactoryToName.cpp b/tests/FlattenableFactoryToName.cpp
new file mode 100644
index 0000000000..f8cb4fa2f9
--- /dev/null
+++ b/tests/FlattenableFactoryToName.cpp
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkAlphaThresholdFilter.h"
+#include "SkImage.h"
+#include "Test.h"
+
+static void test_flattenable(skiatest::Reporter* r,
+                             const SkFlattenable* f,
+                             const char* desc) {
+    if (f) {
+        SkFlattenable::Factory factory = f->getFactory();
+        REPORTER_ASSERT(r, factory);
+        if (factory) {
+            if (!SkFlattenable::FactoryToName(factory)) {
+                ERRORF(r, "SkFlattenable::FactoryToName() fails with %s.", desc);
+            }
+        }
+    }
+}
+
+DEF_TEST(FlattenableFactoryToName, r) {
+    SkIRect rects[2];
+    rects[0] = SkIRect::MakeXYWH(0, 150, 500, 200);
+    rects[1] = SkIRect::MakeXYWH(150, 0, 200, 500);
+    SkRegion region;
+    region.setRects(rects, 2);
+    SkAutoTUnref<SkImageFilter> filter( SkAlphaThresholdFilter::Create(region, 0.2f, 0.7f));
+    test_flattenable(r, filter, "SkAlphaThresholdFilter()");
+
+    SkBitmap bm;
+    bm.allocN32Pixels(8, 8);
+    bm.eraseColor(SK_ColorCYAN);
+    SkAutoTUnref<SkImage> image(SkImage::NewFromBitmap(bm));
+    SkAutoTUnref<SkShader> shader(image->newShader(SkShader::kClamp_TileMode,
+                                                   SkShader::kClamp_TileMode));
+    test_flattenable(r, shader, "SkImage::newShader()");
+}