| Index: third_party/WebKit/LayoutTests/intersection-observer/zero-area-element-hidden.html
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| diff --git a/third_party/WebKit/LayoutTests/intersection-observer/zero-area-element-hidden.html b/third_party/WebKit/LayoutTests/intersection-observer/zero-area-element-hidden.html
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| new file mode 100644
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| index 0000000000000000000000000000000000000000..bf1d2f4c191b7ab79d97ec5cca95c7a7b2161826
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| --- /dev/null
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| +++ b/third_party/WebKit/LayoutTests/intersection-observer/zero-area-element-hidden.html
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| @@ -0,0 +1,24 @@
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| +<!DOCTYPE html>
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| +<script src="../resources/intersection-observer-helper-functions.js"></script>
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| +<script src="../resources/testharness.js"></script>
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| +<script src="../resources/testharnessreport.js"></script>
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| +
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| +<title>Ensure that a hidden zero-area element is treated correctly</title>
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| +
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| +<div id='target' style='width: 0px; height: 0px; position: fixed; top: -1000px'</div>"
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| +
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| +<script>
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| +'use strict';
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| +
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| +async_test(t => {
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| +  let target = document.getElementById('target');
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| +  let entries = [];
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| +  new IntersectionObserver(changes => {
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| +    entries.push(...changes);
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| +  }).observe(target);
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| +  waitForNotification(t.step_func_done(() => {
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| +    // Since the element is initially assumed to be hidden, there are no entries.
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| +    assert_equals(entries.length, 0);
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| +  }));
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| +});
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| +</script>
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| 
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