chromium/third_party/blink/renderer/modules/delegated_ink/delegated_ink_trail_presenter_unittest.cc

// Copyright 2020 The Chromium Authors
// 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/modules/delegated_ink/delegated_ink_trail_presenter.h"

#include "third_party/blink/renderer/bindings/core/v8/v8_binding_for_core.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_pointer_event_init.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_ink_trail_style.h"
#include "third_party/blink/renderer/core/dom/element.h"
#include "third_party/blink/renderer/core/events/pointer_event.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/html/html_iframe_element.h"
#include "third_party/blink/renderer/core/paint/paint_layer_scrollable_area.h"
#include "third_party/blink/renderer/core/testing/sim/sim_request.h"
#include "third_party/blink/renderer/core/testing/sim/sim_test.h"
#include "ui/gfx/delegated_ink_metadata.h"

namespace blink {
namespace {

class TestDelegatedInkMetadata { … };

DelegatedInkTrailPresenter* CreatePresenter(Element* element,
                                            LocalFrame* frame) { … }

}  // namespace

class DelegatedInkTrailPresenterUnitTest : public SimTest { … };

// Test scenarios with the presentation area extending beyond the edges of the
// window to confirm it gets clipped correctly.
class DelegatedInkTrailPresenterCanvasBeyondViewport
    : public DelegatedInkTrailPresenterUnitTest,
      public testing::WithParamInterface<bool> { … };

// Confirm that all the information is collected and transformed correctly, if
// necessary. Numbers and color used were chosen arbitrarily.
TEST_P(DelegatedInkTrailPresenterCanvasBeyondViewport,
       CollectAndPropagateMetadata) { … }

// Confirm that everything is still calculated correctly when the
// DevicePixelRatio is not 1. Numbers and color used were chosen arbitrarily.
TEST_P(DelegatedInkTrailPresenterCanvasBeyondViewport,
       NotDefaultDevicePixelRatio) { … }

// Confirm that everything is still calculated correctly when the
// PageScaleFactor is not 1. Numbers and color used were chosen arbitrarily.
TEST_P(DelegatedInkTrailPresenterCanvasBeyondViewport,
       NotDefaultPageScaleFactor) { … }

// Confirm that everything is still calculated correctly when the
// PageScaleFactor is not 1 and a scroll offset is applied.
TEST_P(DelegatedInkTrailPresenterCanvasBeyondViewport,
       NotDefaultPageScaleFactorNonZeroOffset) { … }

// Confirm that the offset is correct. Numbers and color used were chosen
// arbitrarily.
TEST_P(DelegatedInkTrailPresenterCanvasBeyondViewport, CanvasNotAtOrigin) { … }

// Confirm that values, specifically offsets, are transformed correctly when
// the canvas is in an iframe. Numbers and color used were chosen arbitrarily.
TEST_P(DelegatedInkTrailPresenterCanvasBeyondViewport, CanvasInIFrame) { … }

// Confirm that values, specifically offsets, are transformed correctly when
// the canvas is in a nested iframe. Numbers and color used were chosen
// arbitrarily.
TEST_P(DelegatedInkTrailPresenterCanvasBeyondViewport, NestedIframe) { … }

// Confirm that values are correct when an iframe is used and presentation area
// isn't provided. Numbers and color used were chosen arbitrarily.
TEST_P(DelegatedInkTrailPresenterCanvasBeyondViewport,
       IFrameNoPresentationArea) { … }

INSTANTIATE_TEST_SUITE_P(…);

// Confirm that presentation area defaults to the size of the viewport.
// Numbers and color used were chosen arbitrarily.
TEST_F(DelegatedInkTrailPresenterUnitTest, PresentationAreaNotProvided) { … }

// Test that the presentation area is clipped correctly by the dimensions of
// the iframe, even when the iframe and canvas each fit entirely within the
// visual viewport.
TEST_F(DelegatedInkTrailPresenterUnitTest, CanvasExtendsOutsideOfIframe) { … }

// Test that the presentation area is clipped correctly when it is offset left
// and above the iframe boundaries.
TEST_F(DelegatedInkTrailPresenterUnitTest, CanvasLeftAndAboveIframeBoundaries) { … }

// Confirm that values, specifically presentation area, are transformed
// correctly when the iframe that the canvas is in is clipped by its parent
// iframe. Numbers and color used were chosen arbitrarily.
TEST_F(DelegatedInkTrailPresenterUnitTest, OuterIframeClipsInnerIframe) { … }

}  // namespace blink