Adding unit tests for limited subset of DefaultPathRenderer

src/gpu/GrDefaultPathRenderer.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrDefaultPathRenderer.h"
 
 #include "GrBatch.h"
 #include "GrBatchTarget.h"
+#include "GrBatchTest.h"
 #include "GrBufferAllocPool.h"
 #include "GrContext.h"
 #include "GrDefaultGeoProcFactory.h"
 #include "GrPathUtils.h"
 #include "GrPipelineBuilder.h"
 #include "GrVertices.h"
 #include "SkGeometry.h"
 #include "SkString.h"
 #include "SkStrokeRec.h"
 #include "SkTLazy.h"
@@ skipping 719 matching lines @@
 
 void GrDefaultPathRenderer::onStencilPath(GrDrawTarget* target,
                                           GrPipelineBuilder* pipelineBuilder,
                                           const SkMatrix& viewMatrix,
                                           const SkPath& path,
                                           const GrStrokeInfo& stroke) {
     SkASSERT(SkPath::kInverseEvenOdd_FillType != path.getFillType());
     SkASSERT(SkPath::kInverseWinding_FillType != path.getFillType());
     this->internalDrawPath(target, pipelineBuilder, GrColor_WHITE, viewMatrix, path, stroke, true);
 }
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+#ifdef GR_TEST_UTILS
+
+BATCH_TEST_DEFINE(DefaultPathRenderer) {
+    GrColor color = GrRandomColor(random);
+    SkMatrix viewMatrix = GrTest::TestMatrix(random);
+
+    // For now just hairlines because the other types of draws require two batches.
+    // TODO we should figure out a way to combine the stencil and cover steps into one batch
+    GrStrokeInfo stroke(SkStrokeRec::kHairline_InitStyle);
+    SkPath path = GrTest::TestPath(random);
+
+    // Compute srcSpaceTol
+    SkRect bounds = path.getBounds();
+    SkScalar tol = GrPathUtils::kDefaultTolerance;
+    SkScalar srcSpaceTol = GrPathUtils::scaleToleranceToSrc(tol, viewMatrix, bounds);
+
+    DefaultPathBatch::Geometry geometry;
+    geometry.fColor = color;
+    geometry.fPath = path;
+    geometry.fTolerance = srcSpaceTol;
+

[robertphillips, 2015/05/07 14:51:51]

Do we need to randomize coverage too?

+    viewMatrix.mapRect(&bounds);
+    return DefaultPathBatch::Create(geometry, SK_Scalar1, viewMatrix, true, bounds);
+}
+
+#endif