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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="variant" content="?method=backspace&block=div">
<meta name="variant" content="?method=backspace&block=p">
<meta name="variant" content="?method=backspace&block=blockquote">
<meta name="variant" content="?method=forwarddelete&block=div">
<meta name="variant" content="?method=forwarddelete&block=p">
<meta name="variant" content="?method=forwarddelete&block=blockquote">
<meta name="variant" content="?method=select-boundary&block=div">
<meta name="variant" content="?method=select-boundary&block=p">
<meta name="variant" content="?method=select-boundary&block=blockquote">
<title>Tests for joining pre and other block element</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="../include/editor-test-utils.js"></script>
</head>
<body>
<div contenteditable></div>
<script>
"use strict";

const searchParams = new URLSearchParams(document.location.search);
const testingBackspace = searchParams.get("method") == "backspace";
const testingSelectBoundary = searchParams.get("method") == "select-boundary";
const commandName =
  testingBackspace || testingSelectBoundary ? "delete" : "forwarddelete";
const editingHost = document.querySelector("div[contenteditable]");
const caretInLeft = (() => {
  if (testingSelectBoundary) {
    return "[";
  }
  return testingBackspace ? "" : "[]";
})();
const caretInRight = (() => {
  if (testingSelectBoundary) {
    return "]";
  }
  return testingBackspace ? "[]" : "";
})();
const tag = searchParams.get("block");

// These expectations are odd because they don't preserve white-space style
// coming from another element.  However, this is traditional behavior so that
// browsers should not change the behavior.
const tests = [
  {
    initialHTML:
      `<pre>abc${caretInLeft}</pre>` +
        `<${tag}>${caretInRight}def</${tag}>`,
    expectedHTML: [
      "<pre>abcdef</pre>",
    ],
  },
  {
    initialHTML:
      `<${tag}>abc${caretInLeft}</${tag}>` +
        `<pre>${caretInRight}def</pre>`,
    expectedHTML: [
      `<${tag}>abcdef</${tag}>`,
    ],
    expectedHTMLWithStyledPre: [
      `<${tag}>abc<span style="white-space:pre">def</span></${tag}>`,
    ],
  },
  {
    initialHTML:
      `<pre>abc${caretInLeft}</pre>` +
        `<${tag}>${caretInRight}def<br>ghi</${tag}>`,
    expectedHTML: [
      `<pre>abcdef</pre>` +
        `<${tag}>ghi</${tag}>`,
    ],
  },
  {
    initialHTML:
      `<pre>abc${caretInLeft}</pre>` +
        `<${tag}>${caretInRight}def<div>ghi</div></${tag}>`,
    expectedHTML: [
      "<pre>abcdef</pre>" +
        `<${tag}><div>ghi</div></${tag}>`,
    ],
    skip: tag == "p",
  },
  {
    initialHTML:
      `<${tag}>abc${caretInLeft}</${tag}>` +
        `<pre>${caretInRight}def\nghi</pre>`,
    expectedHTML: [
      `<${tag}>abcdef</${tag}>` +
        "<pre>ghi</pre>",
    ],
    expectedHTMLWithStyledPre: [
      `<${tag}>abc<span style="white-space:pre">def</span></${tag}>` +
        "<pre>ghi</pre>",
    ],
  },
  {
    initialHTML:
      `<${tag}>abc${caretInLeft}</${tag}>` +
        `<pre>${caretInRight}def<br>ghi</pre>`,
    expectedHTML: [
      `<${tag}>abcdef</${tag}>` +
        "<pre>ghi</pre>",
    ],
    expectedHTMLWithStyledPre: [
      `<${tag}>abc<span style="white-space:pre">def</span></${tag}>` +
        "<pre>ghi</pre>",
    ],
  },
  {
    initialHTML:
      `<pre>abc${caretInLeft}</pre>` +
        `<${tag}><b>${caretInRight}def</b></${tag}>`,
    expectedHTML: [
      "<pre>abc<b>def</b></pre>",
    ],
  },
  {
    initialHTML:
      `<pre>abc${caretInLeft}</pre>` +
         `<${tag}><b>${caretInRight}def<br>ghi</b></${tag}>`,
    expectedHTML: [
      "<pre>abc<b>def</b></pre>" +
        `<${tag}><b>ghi</b></${tag}>`,
    ],
  },
  {
    initialHTML:
      `<${tag}>abc${caretInLeft}</${tag}>` +
        `<pre><b>${caretInRight}def\nghi</b></pre>`,
    expectedHTML: [
      `<${tag}>abc<b>def</b></${tag}>` +
        "<pre><b>ghi</b></pre>",
    ],
    expectedHTMLWithStyledPre: [
      `<${tag}>abc<b style="white-space:pre">def</b></${tag}>` +
        "<pre><b>ghi</b></pre>",
      `<${tag}>abc<span style="white-space:pre"><b>def</b></span></${tag}>` +
        "<pre><b>ghi</b></pre>",
    ],
  },
  {
    initialHTML:
      `<${tag}>abc${caretInLeft}</${tag}>` +
        `<pre><b>${caretInRight}def<br>ghi</b></pre>`,
    expectedHTML: [
      `<${tag}>abc<b>def</b></${tag}>` +
        "<pre><b>ghi</b></pre>",
    ],
    expectedHTMLWithStyledPre: [
      `<${tag}>abc<b style="white-space:pre">def</b></${tag}>` +
        "<pre><b>ghi</b></pre>",
      `<${tag}>abc<span style="white-space:pre"><b>def</b></span></${tag}>` +
        "<pre><b>ghi</b></pre>",
    ],
  },
  {
    initialHTML:
      `<${tag}>abc${caretInLeft}</${tag}>` +
        `<pre><b>${caretInRight}def</b>\nghi</pre>`,
    expectedHTML: [
      `<${tag}>abc<b>def</b></${tag}>` +
        "<pre>ghi</pre>",
    ],
    expectedHTMLWithStyledPre: [
      `<${tag}>abc<b style="white-space:pre">def</b></${tag}>` +
        "<pre>ghi</pre>",
      `<${tag}>abc<span style="white-space:pre"><b>def</b></span></${tag}>` +
        "<pre>ghi</pre>",
    ],
  },
  {
    initialHTML:
      `<${tag}>abc${caretInLeft}</${tag}>` +
        `<pre><b>${caretInRight}def</b><br>ghi</pre>`,
    expectedHTML: [
      `<${tag}>abc<b>def</b></${tag}>` +
        "<pre>ghi</pre>",
    ],
    expectedHTMLWithStyledPre: [
      `<${tag}>abc<b style="white-space:pre">def</b></${tag}>` +
        "<pre>ghi</pre>",
      `<${tag}>abc<span style="white-space:pre"><b>def</b></span></${tag}>` +
        "<pre>ghi</pre>",
    ],
  },
  {
    initialHTML:
      `<${tag}>abc${caretInLeft}</${tag}>` +
        `<pre><b>${caretInRight}def\n</b>ghi</pre>`,
    expectedHTML: [
      `<${tag}>abc<b>def</b></${tag}>` +
        "<pre>ghi</pre>",
    ],
    expectedHTMLWithStyledPre: [
      `<${tag}>abc<b style="white-space:pre">def</b></${tag}>` +
        `<pre>ghi</pre>`,
      `<${tag}>abc<span style="white-space:pre"><b>def</b></span></${tag}>` +
        "<pre>ghi</pre>",
    ],
  },
  {
    initialHTML:
      `<${tag}>abc${caretInLeft}</${tag}>` +
        `<pre><b>${caretInRight}def<br></b>ghi</pre>`,
    expectedHTML: [
      `<${tag}>abc<b>def</b></${tag}>` +
        "<pre>ghi</pre>",
    ],
    expectedHTMLWithStyledPre: [
      `<${tag}>abc<b style="white-space:pre">def</b></${tag}>` +
        "<pre>ghi</pre>",
      `<${tag}>abc<span style="white-space:pre"><b>def</b></span></${tag}>` +
        "<pre>ghi</pre>",
    ],
  },
  // One linefeed at start of <pre> should be ignored.
  // Note that if setupEditingHost() does not touch the text node in <pre>,
  // the leading line break is ignored, but if it touches the text node,
  // the value is set to as-is.  Therefore, the following tests can work
  // with empty caretInRight value.
  {
    initialHTML:
      `<${tag}>abc${caretInLeft}</${tag}>` +
        `<pre>\ndef\nghi</pre>`,
    expectedHTML: [
      `<${tag}>abcdef</${tag}>` +
        `<pre>ghi</pre>`,
    ],
    expectedHTMLWithStyledPre: [
      `<${tag}>abc<span style="white-space:pre">def</span></${tag}>` +
        "<pre>ghi</pre>",
    ],
    skip: caretInRight !== "",
  },
  // When there are two line breaks at start of <pre>, the first one should be
  // ignored by the parser but the second one should make empty first line.
  // Therefore, the first empty line should be removed.
  {
    initialHTML:
      `<${tag}>abc${caretInLeft}</${tag}>` +
        `<pre>\n\ndef\nghi</pre>`,
    expectedHTML: [
      `<${tag}>abc</${tag}>` +
        "<pre>def\nghi</pre>",
    ],
    skip: caretInRight !== "",
  },
];
const utils = new EditorTestUtils(editingHost);

const betweenBlockAndPre = new RegExp(`</${tag}><pre>`);
const betweenPreAndBlock = new RegExp(`</pre><${tag}>`);
function putStyleElement() {
  const styleElement = document.createElement("style");
  styleElement.textContent = "pre { white-space: pre; }";
  document.head.appendChild(styleElement);
}

for (const specifyPreStyle of [false, true]) {
  for (const t of tests) {
    if (t.skip) {
      continue;
    }
    if (specifyPreStyle && !t.expectedHTMLWithStyledPre) {
      continue;
    }
    promise_test(async () => {
      if (specifyPreStyle) {
        putStyleElement();
      }
      try {
        utils.setupEditingHost(t.initialHTML);
        await (testingBackspace ? utils.sendBackspaceKey() : utils.sendDeleteKey());
        utils.normalizeStyleAttributeValues();
        assert_in_array(
          editingHost.innerHTML,
          specifyPreStyle ? t.expectedHTMLWithStyledPre : t.expectedHTML,
          `white-space should${
            !specifyPreStyle ? " not" : ""
          } be preserved by <span> elements`
        );
      } finally {
        if (specifyPreStyle) {
          document.querySelector("style")?.remove();
        }
      }
    }, `${commandName} at ${t.initialHTML.replace(/\n/g, "\\n")}${
      specifyPreStyle ? " (with <style>pre { white-space: pre; }</style>)" : ""
    }`);

    // Repeat same tests with inserting a line break between the paragraphs.
    const initialHTMLWithLineBreak =
      t.initialHTML
        .replace(betweenBlockAndPre, `</${tag}>\n<pre>`)
        .replace(betweenPreAndBlock, `</pre>\n<${tag}>`);
    promise_test(async () => {
      if (specifyPreStyle) {
        putStyleElement();
      }
      try {
        utils.setupEditingHost(initialHTMLWithLineBreak);
        await (testingBackspace ? utils.sendBackspaceKey() : utils.sendDeleteKey());
        utils.normalizeStyleAttributeValues();
        assert_in_array(
          editingHost.innerHTML,
          specifyPreStyle ? t.expectedHTMLWithStyledPre : t.expectedHTML,
          `white-space should${
            !specifyPreStyle ? " not" : ""
          } be preserved by <span> elements (testing with a line break between paragraphs)`
        );
      } finally {
        if (specifyPreStyle) {
          document.querySelector("style")?.remove();
        }
      }
    }, `${commandName} at ${initialHTMLWithLineBreak.replace(/\n/g, "\\n")}${
      specifyPreStyle ? " (with <style>pre { white-space: pre; }</style>)" : ""
    }`);
  }
}
</script>
</body>
</html>