[anchor-position] Add block fragmentation tests

The block fragmentation support should be covered by the inline fragmentation support in r1028600 crrev.com/c/3787752, though it was not tested. This patch adds tests for block fragmentation using multicol. The tests pass without further code changes. This patch has no behavior changes. Bug: 1309178 Change-Id: I6cc1ff722fdccddcc494da10705f4a4112e4167b Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3787518 Reviewed-by: Kent Tamura <tkent@chromium.org> Auto-Submit: Koji Ishii <kojii@chromium.org> Commit-Queue: Kent Tamura <tkent@chromium.org> Cr-Commit-Position: refs/heads/main@{#1028608}
chromium · Jul 27, 2022 · cd10df2 · cd10df2
1 parent fde46b2
commit cd10df2
Showing 1 changed file with 42 additions and 0 deletions.
diff --git a/...ink/web_tests/wpt_internal/css/css-anchor-position/anchor-position-fragmentation-001.html b/...ink/web_tests/wpt_internal/css/css-anchor-position/anchor-position-fragmentation-001.html
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+<!DOCTYPE html>
+<link rel="help" href="https://tabatkins.github.io/specs/css-anchor-position/#propdef-anchor-name">
+<link rel="author" href="mailto:kojii@chromium.org">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+<style>
+#container {
+  position: relative;
+  font-family: Ahem;
+  font-size: 10px;
+  line-height: 1;
+  width: 10em;
+}
+.columns {
+  column-width: 100px;
+  column-count: 3;
+  column-gap: 10px;
+  height: 100px;
+}
+#anchor1 {
+  anchor-name: --a1;
+  background: blue;
+}
+.target {
+  position: absolute;
+}
+</style>
+<body onload="checkLayout('.target')">
+  <div id="container">
+    <div>spacer</div>
+    <div class="columns">
+      <div style="height: 150px"></div>
+      <div id="anchor1" style="height: 100px"></div>
+    </div>
+
+    <div class="target" style="left: anchor(--a1 left)" data-offset-x=110></div>
+    <div class="target" style="right: anchor(--a1 right)" data-offset-x=320></div>
+    <div class="target" style="top: anchor(--a1 top)" data-offset-y=10></div>
+    <div class="target" style="bottom: anchor(--a1 bottom)" data-offset-y=110></div>
+  </div>
+</body>