Copy line dashes when copying/assigning CanvasRenderingContext2DState

Source/core/html/canvas/CanvasRenderingContext2DAPITest.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/html/canvas/CanvasRenderingContext2D.h"
 
 #include "core/frame/FrameView.h"
 #include "core/html/HTMLDocument.h"
 #include "core/html/ImageData.h"
@@ skipping 156 matching lines @@
     {
         StringOrCanvasGradientOrCanvasPattern value;
         context2d()->fillStyle(value);
         EXPECT_TRUE(value.isString());
         EXPECT_EQ(String("#000000"), value.getAsString());
     }
 
     EXPECT_EQ(String("rgba(0, 0, 0, 0)"), context2d()->shadowColor());
 }
 
+TEST_F(CanvasRenderingContext2DAPITest, LineDashStateSave)
+{
+    createContext(NonOpaque);
+
+    Vector<float> simpleDash;
+    simpleDash.append(4);
+    simpleDash.append(2);
+
+    context2d()->setLineDash(simpleDash);
+    EXPECT_EQ(simpleDash, context2d()->getLineDash());
+    context2d()->save();
+    // Realize the save.
+    context2d()->scale(2, 2);
+    EXPECT_EQ(simpleDash, context2d()->getLineDash());
+    context2d()->restore();
+    EXPECT_EQ(simpleDash, context2d()->getLineDash());
+}
+
 TEST_F(CanvasRenderingContext2DAPITest, CreateImageData)
 {
     createContext(NonOpaque);
 
     NonThrowableExceptionState exceptionState;
 
     // create a 100x50 imagedata and fill it with white pixels
     ImageData* imageData = context2d()->createImageData(100, 50, exceptionState);
     EXPECT_FALSE(exceptionState.hadException());
     EXPECT_EQ(100, imageData->width());
@@ skipping 23 matching lines @@
     ImageData* imgdata4 = context2d()->createImageData(-10, -20, exceptionState);
     EXPECT_FALSE(exceptionState.hadException());
 
     EXPECT_EQ((unsigned)800, imgdata1->data()->length());
     EXPECT_EQ((unsigned)800, imgdata2->data()->length());
     EXPECT_EQ((unsigned)800, imgdata3->data()->length());
     EXPECT_EQ((unsigned)800, imgdata4->data()->length());
 }
 
 } // namespace blink