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Merge pull request #234 from gaearon/nested-suspense-test
Add test coverage for nested Suspense
This commit is contained in:
Brian Vaughn
@@ -138,6 +138,180 @@ exports[`Store collapseNodesByDefault:false should support mount and update oper
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exports[`Store collapseNodesByDefault:false should support mount and update operations: 3: unmount 1`] = ``;
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exports[`Store collapseNodesByDefault:false should support nested Suspense nodes: 1: third child is suspended 1`] = `
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[root]
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▾ <Wrapper>
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<Component key="Outside">
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▾ <Suspense>
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<Component key="Unrelated at Start">
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▾ <Suspense>
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<Component key="Suspense 1 Content">
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▾ <Suspense>
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<Component key="Suspense 2 Content">
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▾ <Suspense>
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<Loading key="Suspense 3 Fallback">
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<Component key="Unrelated at End">
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`;
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exports[`Store collapseNodesByDefault:false should support nested Suspense nodes: 2: first and third child are suspended 1`] = `
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[root]
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▾ <Wrapper>
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<Component key="Outside">
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▾ <Suspense>
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<Component key="Unrelated at Start">
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▾ <Suspense>
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<Loading key="Suspense 1 Fallback">
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▾ <Suspense>
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<Component key="Suspense 2 Content">
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▾ <Suspense>
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<Loading key="Suspense 3 Fallback">
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<Component key="Unrelated at End">
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`;
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exports[`Store collapseNodesByDefault:false should support nested Suspense nodes: 3: second and third child are suspended 1`] = `
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[root]
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▾ <Wrapper>
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<Component key="Outside">
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▾ <Suspense>
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<Component key="Unrelated at Start">
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▾ <Suspense>
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<Component key="Suspense 1 Content">
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▾ <Suspense>
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<Loading key="Suspense 2 Fallback">
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▾ <Suspense>
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<Loading key="Suspense 3 Fallback">
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<Component key="Unrelated at End">
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`;
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exports[`Store collapseNodesByDefault:false should support nested Suspense nodes: 4: first and third child are suspended 1`] = `
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[root]
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▾ <Wrapper>
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<Component key="Outside">
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▾ <Suspense>
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<Component key="Unrelated at Start">
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▾ <Suspense>
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<Loading key="Suspense 1 Fallback">
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▾ <Suspense>
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<Component key="Suspense 2 Content">
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▾ <Suspense>
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<Loading key="Suspense 3 Fallback">
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<Component key="Unrelated at End">
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`;
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exports[`Store collapseNodesByDefault:false should support nested Suspense nodes: 5: parent is suspended 1`] = `
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[root]
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▾ <Wrapper>
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<Component key="Outside">
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▾ <Suspense>
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<Loading key="Parent Fallback">
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`;
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exports[`Store collapseNodesByDefault:false should support nested Suspense nodes: 6: all children are suspended 1`] = `
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[root]
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▾ <Wrapper>
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<Component key="Outside">
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▾ <Suspense>
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<Component key="Unrelated at Start">
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▾ <Suspense>
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<Loading key="Suspense 1 Fallback">
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▾ <Suspense>
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<Loading key="Suspense 2 Fallback">
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▾ <Suspense>
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<Loading key="Suspense 3 Fallback">
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<Component key="Unrelated at End">
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`;
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exports[`Store collapseNodesByDefault:false should support nested Suspense nodes: 7: only third child is suspended 1`] = `
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[root]
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▾ <Wrapper>
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<Component key="Outside">
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▾ <Suspense>
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<Component key="Unrelated at Start">
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▾ <Suspense>
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<Component key="Suspense 1 Content">
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▾ <Suspense>
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<Component key="Suspense 2 Content">
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▾ <Suspense>
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<Loading key="Suspense 3 Fallback">
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<Component key="Unrelated at End">
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`;
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exports[`Store collapseNodesByDefault:false should support nested Suspense nodes: 8: first and third child are suspended 1`] = `
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[root]
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▾ <Wrapper>
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<Component key="Outside">
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▾ <Suspense>
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<Component key="Unrelated at Start">
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▾ <Suspense>
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<Loading key="Suspense 1 Fallback">
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▾ <Suspense>
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<Component key="Suspense 2 Content">
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▾ <Suspense>
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<Loading key="Suspense 3 Fallback">
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<Component key="Unrelated at End">
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`;
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exports[`Store collapseNodesByDefault:false should support nested Suspense nodes: 9: parent is suspended 1`] = `
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[root]
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▾ <Wrapper>
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<Component key="Outside">
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▾ <Suspense>
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<Loading key="Parent Fallback">
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`;
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exports[`Store collapseNodesByDefault:false should support nested Suspense nodes: 10: parent is suspended 1`] = `
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[root]
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▾ <Wrapper>
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<Component key="Outside">
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▾ <Suspense>
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<Loading key="Parent Fallback">
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`;
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exports[`Store collapseNodesByDefault:false should support nested Suspense nodes: 11: all children are suspended 1`] = `
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[root]
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▾ <Wrapper>
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<Component key="Outside">
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▾ <Suspense>
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<Component key="Unrelated at Start">
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▾ <Suspense>
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<Loading key="Suspense 1 Fallback">
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▾ <Suspense>
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<Loading key="Suspense 2 Fallback">
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▾ <Suspense>
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<Loading key="Suspense 3 Fallback">
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<Component key="Unrelated at End">
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`;
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exports[`Store collapseNodesByDefault:false should support nested Suspense nodes: 12: all children are suspended 1`] = `
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[root]
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▾ <Wrapper>
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<Component key="Outside">
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▾ <Suspense>
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<Component key="Unrelated at Start">
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▾ <Suspense>
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<Loading key="Suspense 1 Fallback">
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▾ <Suspense>
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<Loading key="Suspense 2 Fallback">
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▾ <Suspense>
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<Loading key="Suspense 3 Fallback">
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<Component key="Unrelated at End">
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`;
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exports[`Store collapseNodesByDefault:false should support nested Suspense nodes: 13: third child is suspended 1`] = `
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[root]
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▾ <Wrapper>
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<Component key="Outside">
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▾ <Suspense>
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<Component key="Unrelated at Start">
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▾ <Suspense>
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<Component key="Suspense 1 Content">
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▾ <Suspense>
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<Component key="Suspense 2 Content">
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▾ <Suspense>
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<Loading key="Suspense 3 Fallback">
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<Component key="Unrelated at End">
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`;
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exports[`Store collapseNodesByDefault:false should support reordering of children: 1: mount 1`] = `
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[root]
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▾ <Root>
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@@ -163,6 +163,182 @@ describe('Store', () => {
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expect(store).toMatchSnapshot('2: resolved');
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});
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it('should support nested Suspense nodes', () => {
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const Component = () => null;
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const Loading = () => <div>Loading...</div>;
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const Never = () => {
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throw new Promise(() => {});
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};
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const Wrapper = ({
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suspendFirst = false,
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suspendSecond = false,
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suspendParent = false,
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}) => (
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<React.Fragment>
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<Component key="Outside" />
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<React.Suspense fallback={<Loading key="Parent Fallback" />}>
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<Component key="Unrelated at Start" />
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<React.Suspense fallback={<Loading key="Suspense 1 Fallback" />}>
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{suspendFirst ? (
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<Never />
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) : (
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<Component key="Suspense 1 Content" />
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)}
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</React.Suspense>
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<React.Suspense fallback={<Loading key="Suspense 2 Fallback" />}>
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{suspendSecond ? (
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<Never />
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) : (
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<Component key="Suspense 2 Content" />
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)}
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</React.Suspense>
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<React.Suspense fallback={<Loading key="Suspense 3 Fallback" />}>
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<Never />
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</React.Suspense>
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{suspendParent && <Never />}
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<Component key="Unrelated at End" />
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</React.Suspense>
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</React.Fragment>
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);
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const container = document.createElement('div');
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act(() =>
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ReactDOM.render(
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<Wrapper
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suspendParent={false}
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suspendFirst={false}
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suspendSecond={false}
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/>,
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container
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)
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);
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expect(store).toMatchSnapshot('1: third child is suspended');
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act(() =>
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ReactDOM.render(
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<Wrapper
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suspendParent={false}
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suspendFirst={true}
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suspendSecond={false}
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/>,
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container
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)
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);
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expect(store).toMatchSnapshot('2: first and third child are suspended');
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act(() =>
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ReactDOM.render(
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<Wrapper
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suspendParent={false}
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suspendFirst={false}
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suspendSecond={true}
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/>,
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container
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)
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);
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expect(store).toMatchSnapshot('3: second and third child are suspended');
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act(() =>
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ReactDOM.render(
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<Wrapper
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suspendParent={false}
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suspendFirst={true}
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suspendSecond={false}
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/>,
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container
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)
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);
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expect(store).toMatchSnapshot('4: first and third child are suspended');
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act(() =>
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ReactDOM.render(
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<Wrapper
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suspendParent={true}
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suspendFirst={true}
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suspendSecond={false}
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/>,
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container
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)
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);
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expect(store).toMatchSnapshot('5: parent is suspended');
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act(() =>
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ReactDOM.render(
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<Wrapper
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suspendParent={false}
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suspendFirst={true}
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suspendSecond={true}
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/>,
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container
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)
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);
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expect(store).toMatchSnapshot('6: all children are suspended');
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act(() =>
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ReactDOM.render(
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<Wrapper
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suspendParent={false}
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suspendFirst={false}
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suspendSecond={false}
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/>,
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container
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)
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);
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expect(store).toMatchSnapshot('7: only third child is suspended');
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// HACK There's only one renderer for this test
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const rendererID = Object.keys(agent._rendererInterfaces)[0];
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act(() =>
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agent.overrideSuspense({
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id: store.getElementIDAtIndex(4),
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rendererID,
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forceFallback: true,
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})
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);
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expect(store).toMatchSnapshot('8: first and third child are suspended');
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act(() =>
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agent.overrideSuspense({
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id: store.getElementIDAtIndex(2),
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rendererID,
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forceFallback: true,
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})
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);
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expect(store).toMatchSnapshot('9: parent is suspended');
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act(() =>
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ReactDOM.render(
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<Wrapper
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suspendParent={false}
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suspendFirst={true}
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suspendSecond={true}
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/>,
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container
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)
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);
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expect(store).toMatchSnapshot('10: parent is suspended');
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act(() =>
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agent.overrideSuspense({
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id: store.getElementIDAtIndex(2),
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rendererID,
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forceFallback: false,
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})
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);
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expect(store).toMatchSnapshot('11: all children are suspended');
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act(() =>
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agent.overrideSuspense({
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id: store.getElementIDAtIndex(4),
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rendererID,
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forceFallback: false,
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})
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);
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expect(store).toMatchSnapshot('12: all children are suspended');
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act(() =>
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ReactDOM.render(
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<Wrapper
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suspendParent={false}
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suspendFirst={false}
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suspendSecond={false}
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/>,
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container
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)
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);
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expect(store).toMatchSnapshot('13: third child is suspended');
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});
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it('should support collapsing parts of the tree', () => {
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const Grandparent = ({ count }) => (
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<React.Fragment>
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