mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Samuel Susla
291b45b686
Summary: Adds a bare minimum test that verifies correct behaviour of `getRelativeLayoutMetrics`. Changelog: [internal] Reviewed By: shergin Differential Revision: D19449128 fbshipit-source-id: afde997a770921d580575eb0cdd04fce6252cb5a
90 lines
3.1 KiB
C++
90 lines
3.1 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include <gtest/gtest.h>
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#include "TestComponent.h"
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using namespace facebook::react;
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class LayoutableShadowNodeTest : public ::testing::Test {
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protected:
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LayoutableShadowNodeTest()
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: eventDispatcher_(std::shared_ptr<EventDispatcher const>()),
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componentDescriptor_(TestComponentDescriptor({eventDispatcher_})) {
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auto familyA = std::make_shared<ShadowNodeFamily>(
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ShadowNodeFamilyFragment{
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/* .tag = */ 9,
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/* .surfaceId = */ 1,
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/* .eventEmitter = */ nullptr,
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},
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componentDescriptor_);
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nodeA_ = std::make_shared<TestShadowNode>(
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ShadowNodeFragment{
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/* .props = */ std::make_shared<const TestProps>(),
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/* .children = */ ShadowNode::emptySharedShadowNodeSharedList(),
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},
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familyA,
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ShadowNodeTraits{});
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auto familyB = std::make_shared<ShadowNodeFamily>(
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ShadowNodeFamilyFragment{
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/* .tag = */ 10,
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/* .surfaceId = */ 1,
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/* .eventEmitter = */ nullptr,
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},
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componentDescriptor_);
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nodeB_ = std::make_shared<TestShadowNode>(
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ShadowNodeFragment{
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/* .props = */ std::make_shared<const TestProps>(),
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/* .children = */ ShadowNode::emptySharedShadowNodeSharedList(),
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},
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familyB,
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ShadowNodeTraits{});
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nodeA_->appendChild(nodeB_);
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}
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std::shared_ptr<EventDispatcher const> eventDispatcher_;
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std::shared_ptr<TestShadowNode> nodeA_;
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std::shared_ptr<TestShadowNode> nodeB_;
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TestComponentDescriptor componentDescriptor_;
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};
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TEST_F(LayoutableShadowNodeTest, relativeLayourMetrics) {
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auto layoutMetrics = EmptyLayoutMetrics;
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layoutMetrics.frame.origin = {10, 20};
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layoutMetrics.frame.size = {100, 200};
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nodeA_->setLayoutMetrics(layoutMetrics);
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nodeB_->setLayoutMetrics(layoutMetrics);
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auto relativeLayoutMetrics = nodeB_->getRelativeLayoutMetrics(*nodeA_, {});
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// A is a parent to B, A has origin {10, 10}, B has origin {10, 10}.
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// B's relative origin to A should be {10, 10}.
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// D19447900 has more about the issue.
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EXPECT_EQ(relativeLayoutMetrics.frame.origin.x, 10);
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EXPECT_EQ(relativeLayoutMetrics.frame.origin.y, 20);
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}
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TEST_F(LayoutableShadowNodeTest, relativeLayourMetricsOnClonedNode) {
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// B is cloned and mutated.
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auto nodeBRevision2 = std::static_pointer_cast<TestShadowNode>(
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componentDescriptor_.cloneShadowNode(*nodeB_, ShadowNodeFragment{}));
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auto layoutMetrics = EmptyLayoutMetrics;
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layoutMetrics.frame.size = {500, 600};
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nodeBRevision2->setLayoutMetrics(layoutMetrics);
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nodeA_->replaceChild(*nodeB_, nodeBRevision2);
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// Even if we ask old ShadowNode for its relative layoutMetrics, it needs to
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// return correct, new layoutMetrics. D19433873 has more about the issue.
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auto newRelativeLayoutMetrics = nodeB_->getRelativeLayoutMetrics(*nodeA_, {});
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EXPECT_EQ(newRelativeLayoutMetrics.frame.size.width, 500);
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EXPECT_EQ(newRelativeLayoutMetrics.frame.size.height, 600);
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}
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