text: // Copyright 2016 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 "third_party/blink/renderer/core/layout/layout_progress.h"
  
  #include "testing/gtest/include/gtest/gtest.h"
  #include "third_party/blink/renderer/core/html/html_element.h"
  #include "third_party/blink/renderer/core/html_names.h"
  #include "third_party/blink/renderer/core/testing/core_unit_test_helper.h"
  
  namespace blink {
  
  class LayoutProgressTest : public RenderingTest {
   public:
    static bool IsAnimationTimerActive(const LayoutProgress* o) {
      return o->IsAnimationTimerActive();
    }
    static bool IsAnimatiing(const LayoutProgress* o) { return o->IsAnimating(); }
  };
  
  TEST_F(LayoutProgressTest, AnimationScheduling) {
    RenderingTest::SetBodyInnerHTML(
        "<progress id=\"progressElement\" value=0.3 max=1.0></progress>");
    UpdateAllLifecyclePhasesForTest();
    Element* progress_element =
        GetDocument().getElementById(AtomicString("progressElement"));
    LayoutProgress* layout_progress =
        ToLayoutProgress(progress_element->GetLayoutObject());
  
    // Verify that we do not schedule a timer for a determinant progress element
    EXPECT_FALSE(LayoutProgressTest::IsAnimationTimerActive(layout_progress));
    EXPECT_FALSE(LayoutProgressTest::IsAnimatiing(layout_progress));
  
    progress_element->removeAttribute("value");
    UpdateAllLifecyclePhasesForTest();
  
    // Verify that we schedule a timer for an indeterminant progress element
    EXPECT_TRUE(LayoutProgressTest::IsAnimationTimerActive(layout_progress));
    EXPECT_TRUE(LayoutProgressTest::IsAnimatiing(layout_progress));
  
    progress_element->setAttribute(html_names::kValueAttr, "0.7");
    UpdateAllLifecyclePhasesForTest();
  
    // Verify that we cancel the timer for a determinant progress element
    EXPECT_FALSE(LayoutProgressTest::IsAnimationTimerActive(layout_progress));
    EXPECT_FALSE(LayoutProgressTest::IsAnimatiing(layout_progress));
  }
  
  }  // namespace blink
  