From 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 03:47:29 +0200
Subject: Adding upstream version 115.8.0esr.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 layout/svg/tests/chrome.ini                        |  8 ++
 layout/svg/tests/file_black_yellow.svg             |  9 ++
 .../svg/tests/file_context_fill_fallback_red.html  | 17 ++++
 .../svg/tests/file_context_fill_fallback_red.svg   |  8 ++
 layout/svg/tests/file_disabled_iframe.html         | 81 ++++++++++++++++++
 layout/svg/tests/file_embed_sizing_both.svg        |  1 +
 layout/svg/tests/file_embed_sizing_none.svg        |  1 +
 layout/svg/tests/file_embed_sizing_ratio.svg       |  1 +
 layout/svg/tests/file_embed_sizing_size.svg        |  1 +
 layout/svg/tests/file_filter_crossorigin.svg       | 25 ++++++
 layout/svg/tests/file_yellow_black.svg             |  9 ++
 layout/svg/tests/filters.svg                       | 28 +++++++
 layout/svg/tests/mochitest.ini                     | 30 +++++++
 layout/svg/tests/svg_example_script.svg            |  7 ++
 layout/svg/tests/svg_example_test.html             |  7 ++
 layout/svg/tests/test_bug1544209.html              | 19 +++++
 .../test_context_properties_allowed_domains.html   | 95 ++++++++++++++++++++++
 layout/svg/tests/test_disabled.html                | 14 ++++
 layout/svg/tests/test_disabled_chrome.html         | 54 ++++++++++++
 layout/svg/tests/test_embed_sizing.html            | 65 +++++++++++++++
 layout/svg/tests/test_filter_crossorigin.html      | 60 ++++++++++++++
 layout/svg/tests/test_hover_near_text.html         | 29 +++++++
 layout/svg/tests/test_multiple_font_size.html      | 25 ++++++
 layout/svg/tests/test_use_tree_cycle.html          | 37 +++++++++
 24 files changed, 631 insertions(+)
 create mode 100644 layout/svg/tests/chrome.ini
 create mode 100644 layout/svg/tests/file_black_yellow.svg
 create mode 100644 layout/svg/tests/file_context_fill_fallback_red.html
 create mode 100644 layout/svg/tests/file_context_fill_fallback_red.svg
 create mode 100644 layout/svg/tests/file_disabled_iframe.html
 create mode 100644 layout/svg/tests/file_embed_sizing_both.svg
 create mode 100644 layout/svg/tests/file_embed_sizing_none.svg
 create mode 100644 layout/svg/tests/file_embed_sizing_ratio.svg
 create mode 100644 layout/svg/tests/file_embed_sizing_size.svg
 create mode 100644 layout/svg/tests/file_filter_crossorigin.svg
 create mode 100644 layout/svg/tests/file_yellow_black.svg
 create mode 100644 layout/svg/tests/filters.svg
 create mode 100644 layout/svg/tests/mochitest.ini
 create mode 100644 layout/svg/tests/svg_example_script.svg
 create mode 100644 layout/svg/tests/svg_example_test.html
 create mode 100644 layout/svg/tests/test_bug1544209.html
 create mode 100644 layout/svg/tests/test_context_properties_allowed_domains.html
 create mode 100644 layout/svg/tests/test_disabled.html
 create mode 100644 layout/svg/tests/test_disabled_chrome.html
 create mode 100644 layout/svg/tests/test_embed_sizing.html
 create mode 100644 layout/svg/tests/test_filter_crossorigin.html
 create mode 100644 layout/svg/tests/test_hover_near_text.html
 create mode 100644 layout/svg/tests/test_multiple_font_size.html
 create mode 100644 layout/svg/tests/test_use_tree_cycle.html

(limited to 'layout/svg/tests')

diff --git a/layout/svg/tests/chrome.ini b/layout/svg/tests/chrome.ini
new file mode 100644
index 0000000000..cc1b542a66
--- /dev/null
+++ b/layout/svg/tests/chrome.ini
@@ -0,0 +1,8 @@
+[test_disabled_chrome.html]
+support-files =
+  svg_example_test.html
+  svg_example_script.svg
+
+[test_context_properties_allowed_domains.html]
+support-files =
+  file_context_fill_fallback_red.html
diff --git a/layout/svg/tests/file_black_yellow.svg b/layout/svg/tests/file_black_yellow.svg
new file mode 100644
index 0000000000..58c5689838
--- /dev/null
+++ b/layout/svg/tests/file_black_yellow.svg
@@ -0,0 +1,9 @@
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1"
+     xmlns:xlink="http://www.w3.org/1999/xlink">
+  <rect height="100%" width="100%" fill="yellow" />
+  <rect height="50px" width="100px" fill="black" />
+</svg>
diff --git a/layout/svg/tests/file_context_fill_fallback_red.html b/layout/svg/tests/file_context_fill_fallback_red.html
new file mode 100644
index 0000000000..ac8b5b4203
--- /dev/null
+++ b/layout/svg/tests/file_context_fill_fallback_red.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<!--
+  Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<style>
+  img {
+    -moz-context-properties: fill;
+    fill: green;
+  }
+</style>
+<img style="width: 100px; height: 100px;">
+<script>
+  let domain = location.search.substring(1);
+  let img = document.querySelector("img");
+  img.src = img.alt = `http://${domain}/tests/layout/svg/tests/file_context_fill_fallback_red.svg`;
+</script>
diff --git a/layout/svg/tests/file_context_fill_fallback_red.svg b/layout/svg/tests/file_context_fill_fallback_red.svg
new file mode 100644
index 0000000000..9088555b53
--- /dev/null
+++ b/layout/svg/tests/file_context_fill_fallback_red.svg
@@ -0,0 +1,8 @@
+<!--
+  Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1"
+     xmlns:xlink="http://www.w3.org/1999/xlink">
+  <rect height="100%" width="100%" fill="context-fill red" />
+</svg>
diff --git a/layout/svg/tests/file_disabled_iframe.html b/layout/svg/tests/file_disabled_iframe.html
new file mode 100644
index 0000000000..55eda75fde
--- /dev/null
+++ b/layout/svg/tests/file_disabled_iframe.html
@@ -0,0 +1,81 @@
+<!doctype html>
+<script>
+  window.is = window.parent.is;
+  window.SimpleTest = window.parent.SimpleTest;
+</script>
+<div id="testnodes"><span>hi</span> there <!-- mon ami --></div>
+<script>
+  let t = document.getElementById('testnodes');
+  t.innerHTML = null;
+  t.appendChild(document.createElementNS("http://www.w3.org/2000/svg", "svg:svg"));
+  t.firstChild.textContent = "<foo>";
+  is(t.innerHTML, "<svg:svg>&lt;foo&gt;</svg:svg>");
+
+  // This test crashes if the style tags are not handled correctly
+  t.innerHTML = `<svg version="1.1">
+    <style>
+        circle {
+            fill: currentColor;
+        }
+    </style>
+    <g><circle cx="25.8" cy="9.3" r="1.5"/></g>
+  </svg>
+  `;
+  is(t.firstChild.tagName.toLowerCase(), 'svg');
+
+  // This test crashes if the script tags are not handled correctly
+  t.innerHTML = `<svg version="1.1">
+    <scri` + `pt>
+      throw "badment, should never fire.";
+    </scri` + `pt>
+    <g><circle cx="25.8" cy="9.3" r="1.5"/></g>
+  </svg>`;
+  is(t.firstChild.tagName.toLowerCase(), 'svg');
+
+  t.innerHTML = null;
+  t.appendChild(document.createElementNS("http://www.w3.org/2000/svg", "svg"));
+  is(t.firstChild.namespaceURI, "http://www.w3.org/2000/svg");
+  t.firstChild.appendChild(document.createElementNS("http://www.w3.org/2000/svg", "script"));
+  is(t.firstChild.firstChild.namespaceURI, "http://www.w3.org/2000/svg");
+  t.firstChild.firstChild.textContent = "1&2<3>4\xA0";
+  is(t.innerHTML, '<svg><script>1&amp;2&lt;3&gt;4&nbsp;\u003C/script></svg>');
+
+  t.innerHTML = null;
+  t.appendChild(document.createElementNS("http://www.w3.org/2000/svg", "svg"));
+  is(t.firstChild.namespaceURI, "http://www.w3.org/2000/svg");
+  t.firstChild.appendChild(document.createElementNS("http://www.w3.org/2000/svg", "style"));
+  is(t.firstChild.firstChild.namespaceURI, "http://www.w3.org/2000/svg");
+  t.firstChild.firstChild.textContent = "1&2<3>4\xA0";
+  is(t.innerHTML, '<svg><style>1&amp;2&lt;3&gt;4&nbsp;\u003C/style></svg>');
+
+  //
+  // Tests for Bug 1673237
+  //
+
+  // This test fails if about:blank renders SVGs
+  t.innerHTML = null;
+  var iframe = document.createElement("iframe");
+  iframe.setAttribute("src", "about:blank")
+  t.appendChild(iframe);
+  iframe.appendChild(document.createElementNS("http://www.w3.org/2000/svg", "svg:svg"));
+  iframe.firstChild.textContent = "<foo>";
+  is(iframe.innerHTML, "<svg:svg>&lt;foo&gt;</svg:svg>");
+
+  // This test fails if about:blank renders SVGs
+  var win = window.open("about:blank");
+  win.document.body.appendChild(document.createElementNS("http://www.w3.org/2000/svg", "svg:svg"))
+  win.document.body.firstChild.textContent = "<foo>";
+  is(win.document.body.innerHTML, "<svg:svg>&lt;foo&gt;</svg:svg>");
+  win.close();
+
+  // This test fails if about:srcdoc renders SVGs
+  t.innerHTML = null;
+  iframe = document.createElement("iframe");
+  iframe.srcdoc = "<svg:svg></svg:svg>";
+  iframe.onload = function() {
+    iframe.contentDocument.body.firstChild.textContent = "<foo>";
+    is(iframe.contentDocument.body.innerHTML, "<svg:svg>&lt;foo&gt;</svg:svg>");
+    SimpleTest.finish();
+  }
+  t.appendChild(iframe);
+</script>
diff --git a/layout/svg/tests/file_embed_sizing_both.svg b/layout/svg/tests/file_embed_sizing_both.svg
new file mode 100644
index 0000000000..8bc39b7d02
--- /dev/null
+++ b/layout/svg/tests/file_embed_sizing_both.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="200" height="400" viewBox="0 0 1 5"></svg>
diff --git a/layout/svg/tests/file_embed_sizing_none.svg b/layout/svg/tests/file_embed_sizing_none.svg
new file mode 100644
index 0000000000..714efc7ef0
--- /dev/null
+++ b/layout/svg/tests/file_embed_sizing_none.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg"></svg>
diff --git a/layout/svg/tests/file_embed_sizing_ratio.svg b/layout/svg/tests/file_embed_sizing_ratio.svg
new file mode 100644
index 0000000000..b590bb7da6
--- /dev/null
+++ b/layout/svg/tests/file_embed_sizing_ratio.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1 5"></svg>
diff --git a/layout/svg/tests/file_embed_sizing_size.svg b/layout/svg/tests/file_embed_sizing_size.svg
new file mode 100644
index 0000000000..76f50b5f08
--- /dev/null
+++ b/layout/svg/tests/file_embed_sizing_size.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="200" height="900"></svg>
diff --git a/layout/svg/tests/file_filter_crossorigin.svg b/layout/svg/tests/file_filter_crossorigin.svg
new file mode 100644
index 0000000000..a1b9ad0cab
--- /dev/null
+++ b/layout/svg/tests/file_filter_crossorigin.svg
@@ -0,0 +1,25 @@
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1"
+     xmlns:xlink="http://www.w3.org/1999/xlink">
+
+  <!-- We include these <use> elements simply to be sure the SVG resource URLs
+       get a chance to block 'onload', if they can be loaded. -->
+  <use xlink:href="http://mochi.test:8888/tests/layout/svg/tests/filters.svg#empty" />
+  <use xlink:href="http://example.org/tests/layout/svg/tests/filters.svg#empty" />
+
+  <!-- giant yellow rect in the background, just so you can visually tell
+       that this SVG file has loaded/rendered. -->
+  <rect height="100%" width="100%" fill="yellow" />
+
+  <!-- For both rects below: if it's black, its filter resolved successfully.
+       If it's yellow, it means we failed to load the resource
+       (e.g. because it was blocked as a cross-origin resource). -->
+  <rect height="50px" width="100px" fill="yellow"
+        filter="url(http://mochi.test:8888/tests/layout/svg/tests/filters.svg#NonWhiteToBlack)"/>
+  <rect y="50px"
+        height="50px" width="100px" fill="yellow"
+        filter="url(http://example.org/tests/layout/svg/tests/filters.svg#NonWhiteToBlack)"/>
+</svg>
diff --git a/layout/svg/tests/file_yellow_black.svg b/layout/svg/tests/file_yellow_black.svg
new file mode 100644
index 0000000000..77c14c9af8
--- /dev/null
+++ b/layout/svg/tests/file_yellow_black.svg
@@ -0,0 +1,9 @@
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1"
+     xmlns:xlink="http://www.w3.org/1999/xlink">
+  <rect height="100%" width="100%" fill="yellow" />
+  <rect y="50px" height="50px" width="100px" fill="black" />
+</svg>
diff --git a/layout/svg/tests/filters.svg b/layout/svg/tests/filters.svg
new file mode 100644
index 0000000000..213df7fc93
--- /dev/null
+++ b/layout/svg/tests/filters.svg
@@ -0,0 +1,28 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
+  <defs>
+
+    <!-- so that other documents can svg:use this one and force it to
+         load before onload -->
+    <g id="empty" />
+
+    <!-- Keep all white pixels white, and change any others to black. -->
+    <!-- NOTE: alpha is preserved, so it will not adjust alpha edges -->
+    <filter id="NonWhiteToBlack" x="0%" y="0%" width="100%" height="100%">
+      <feComponentTransfer>
+        <feFuncR type="linear" slope="-1" intercept="1" />
+        <feFuncG type="linear" slope="-1" intercept="1" />
+        <feFuncB type="linear" slope="-1" intercept="1" />
+      </feComponentTransfer>
+      <feColorMatrix type="matrix" values="255 255 255 0 0
+                                           255 255 255 0 0
+                                           255 255 255 0 0
+                                           0 0 0 1 0" />
+      <feComponentTransfer>
+        <feFuncR type="linear" slope="-1" intercept="1" />
+        <feFuncG type="linear" slope="-1" intercept="1" />
+        <feFuncB type="linear" slope="-1" intercept="1" />
+      </feComponentTransfer>
+    </filter>
+  </defs>
+</svg>
diff --git a/layout/svg/tests/mochitest.ini b/layout/svg/tests/mochitest.ini
new file mode 100644
index 0000000000..3397e849b5
--- /dev/null
+++ b/layout/svg/tests/mochitest.ini
@@ -0,0 +1,30 @@
+[DEFAULT]
+support-files =
+  file_disabled_iframe.html
+  file_context_fill_fallback_red.svg
+
+[test_disabled.html]
+[test_embed_sizing.html]
+support-files =
+  file_embed_sizing_none.svg
+  file_embed_sizing_size.svg
+  file_embed_sizing_ratio.svg
+  file_embed_sizing_both.svg
+skip-if =
+  http3
+
+[test_filter_crossorigin.html]
+support-files =
+  filters.svg
+  file_filter_crossorigin.svg
+  file_black_yellow.svg
+  file_yellow_black.svg
+# Bug 1617611: Fix all the tests broken by "cookies SameSite=lax by default"
+skip-if =
+  xorigin
+  os == "linux" && bits == 64 #Bug 1642198
+  win10_2004 && !debug # Bug 1642198
+[test_hover_near_text.html]
+[test_multiple_font_size.html]
+[test_use_tree_cycle.html]
+[test_bug1544209.html]
diff --git a/layout/svg/tests/svg_example_script.svg b/layout/svg/tests/svg_example_script.svg
new file mode 100644
index 0000000000..5eab758f92
--- /dev/null
+++ b/layout/svg/tests/svg_example_script.svg
@@ -0,0 +1,7 @@
+<svg version="1.1">
+  <script>
+    document.documentElement.style.backgroundColor = 'rebeccapurple';
+    throw "badment, should never fire.";
+  </script>
+  <g><circle cx="25.8" cy="9.3" r="1.5"/></g>
+</svg>
diff --git a/layout/svg/tests/svg_example_test.html b/layout/svg/tests/svg_example_test.html
new file mode 100644
index 0000000000..45c31c98b4
--- /dev/null
+++ b/layout/svg/tests/svg_example_test.html
@@ -0,0 +1,7 @@
+<svg id="layout" viewBox="0 0 120 120" version="1.1"
+  xmlns="http://www.w3.org/2000/svg">
+  <circle cx="60" cy="60" r="50"/>
+</svg>
+
+<svg id="svgel">
+</svg>
diff --git a/layout/svg/tests/test_bug1544209.html b/layout/svg/tests/test_bug1544209.html
new file mode 100644
index 0000000000..b2226b3ea9
--- /dev/null
+++ b/layout/svg/tests/test_bug1544209.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<link rel="stylesheet" href="/tests/SimpleTest/test.css">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1544209">Mozilla Bug 1544209</a>
+
+<svg height="800px" width="800px">
+    <text transform="scale(3,3)" id="a" x="20px" y="20px">ABC<tspan id="b">ABC</tspan></text>
+</svg>
+
+<script type="application/javascript">
+  let a = document.getElementById("a"),
+      b = document.getElementById("b");
+
+  let wtext = a.getBoundingClientRect().width,
+      wtspan = b.getBoundingClientRect().width;
+
+  ok(wtext >= wtspan, "<tspan> should not be wider than <text>");
+  isfuzzy((wtext - wtspan) / wtext, 0.5, 0.1, "<tspan> should be approximately half of the <text> width");
+</script>
diff --git a/layout/svg/tests/test_context_properties_allowed_domains.html b/layout/svg/tests/test_context_properties_allowed_domains.html
new file mode 100644
index 0000000000..26f38a8770
--- /dev/null
+++ b/layout/svg/tests/test_context_properties_allowed_domains.html
@@ -0,0 +1,95 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>Bug 1699892 - SVG context properties for allowed domains</title>
+<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+<script src="chrome://mochikit/content/tests/SimpleTest/WindowSnapshot.js"></script>
+<script>
+  /**
+   * Returns a Promise that resolves when target fires a load event.
+   */
+  function waitForLoad(target) {
+    return new Promise(resolve => {
+      target.addEventListener("load", () => {
+        if (event.target == target) {
+          resolve();
+        }}, { once: true });
+    });
+  }
+
+  function makeContextFillFrame(source) {
+    return `
+      <style>
+        img {
+          -moz-context-properties: fill;
+          fill: green;
+        }
+      </style>
+      <img src="${source}" style="width: 100px; height: 100px;">
+    `;
+  }
+
+  /**
+   * Creates an iframe, loads src in it, and waits for the load event
+   * for the iframe to fire. Then it snapshots the iframe and returns
+   * the snapshot (and removes the iframe from the document, to clean up).
+   *
+   * src can be a URL starting with http, or is otherwise assumed to be
+   * a srcdoc string.
+   */
+  async function loadSrcImageAndSnapshot({ src, srcdoc }) {
+    let frame = document.createElement("iframe");
+    document.body.appendChild(frame);
+
+    if (src) {
+      frame.src = src;
+    } else {
+      frame.srcdoc = srcdoc;
+    }
+
+    await waitForLoad(frame);
+
+    let snapshot = await snapshotWindow(frame, false);
+    document.body.removeChild(frame);
+    return snapshot;
+  }
+
+  add_task(async () => {
+    const ALLOWED_DOMAIN = "example.org";
+    const DISALLOWED_DOMAIN = "example.com";
+
+    await SpecialPowers.pushPrefEnv({
+      set: [["svg.context-properties.content.allowed-domains", ALLOWED_DOMAIN]]
+    });
+
+    // When the context properties are allowed, we expect a green
+    // square. When they are not allowed, we expected a red square.
+
+    let redReference = await loadSrcImageAndSnapshot({
+      srcdoc: `<div style="width: 100px; height: 100px; background: red"></div>`,
+    });
+
+    let greenReference = await loadSrcImageAndSnapshot({
+      srcdoc: `<div style="width: 100px; height: 100px; background: green"></div>`,
+    });
+
+    let allowedSnapshot = await loadSrcImageAndSnapshot({
+      src: `file_context_fill_fallback_red.html?${ALLOWED_DOMAIN}`
+    });
+
+    let disallowedSnapshot = await loadSrcImageAndSnapshot({
+      src: `file_context_fill_fallback_red.html?${DISALLOWED_DOMAIN}`
+    });
+
+    const kNoFuzz = null;
+    info("Reference snapshots should look different from each other");
+    assertSnapshots(redReference, greenReference, false, kNoFuzz, "red", "green");
+
+    info("Allowed domain should be green");
+    assertSnapshots(allowedSnapshot, greenReference, true, kNoFuzz, ALLOWED_DOMAIN, "green");
+
+    info("Disallowed domain should be red");
+    assertSnapshots(disallowedSnapshot, redReference, true, kNoFuzz, DISALLOWED_DOMAIN, "red");
+  });
+</script>
+<body>
+</body>
diff --git a/layout/svg/tests/test_disabled.html b/layout/svg/tests/test_disabled.html
new file mode 100644
index 0000000000..acf52e73a2
--- /dev/null
+++ b/layout/svg/tests/test_disabled.html
@@ -0,0 +1,14 @@
+<!DOCTYPE HTML>
+<!--
+Copied from https://bugzilla.mozilla.org/show_bug.cgi?id=744830
+-->
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<link rel="stylesheet" href="/tests/SimpleTest/test.css">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=166235">Mozilla Bug 166235</a>
+<iframe></iframe>
+<script type="application/javascript">
+  SimpleTest.waitForExplicitFinish();
+  SpecialPowers.pushPrefEnv({"set": [["svg.disabled", true]]}, function() {
+    document.querySelector('iframe').src = "file_disabled_iframe.html";
+  });
+</script>
diff --git a/layout/svg/tests/test_disabled_chrome.html b/layout/svg/tests/test_disabled_chrome.html
new file mode 100644
index 0000000000..e7564f17f2
--- /dev/null
+++ b/layout/svg/tests/test_disabled_chrome.html
@@ -0,0 +1,54 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=744830
+-->
+<head>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=166235">Mozilla Bug 166235</a>
+<div id="testnodes"><span>hi</span> there <!-- mon ami --></div>
+<pre id="test">
+<script type="application/javascript">
+  add_task(async function() {
+    const initialPrefValue = SpecialPowers.getBoolPref("svg.disabled");
+    SpecialPowers.setBoolPref("svg.disabled", true);
+    const Cu = SpecialPowers.Components.utils;
+    const { ContentTaskUtils } = ChromeUtils.import("resource://testing-common/ContentTaskUtils.jsm");
+    let t = document.getElementById('testnodes');
+
+    let url = 'chrome://mochitests/content/chrome/layout/svg/tests/svg_example_test.html'
+    const chromeIframeEl = document.createElement('iframe');
+    let chromeLoadPromise = ContentTaskUtils.waitForEvent(chromeIframeEl, 'load', false);
+    chromeIframeEl.src = url;
+    t.appendChild(chromeIframeEl);
+
+    await chromeLoadPromise;
+    const chromeBR = chromeIframeEl.contentDocument.body.getBoundingClientRect();
+
+    url = "http://mochi.test:8888/chrome/layout/svg/tests/svg_example_test.html";
+    const iframeEl = document.createElement('iframe');
+    iframeEl.src = url;
+    let loadPromise = ContentTaskUtils.waitForEvent(iframeEl, 'load', false);
+    t.appendChild(iframeEl);
+    await loadPromise;
+
+    const contentBR = iframeEl.contentDocument.body.getBoundingClientRect();
+    ok(chromeBR.height > contentBR.height, "Chrome content height should be bigger than content due to layout");
+
+    url = "http://mochi.test:8888/chrome/layout/svg/tests/svg_example_script.svg";
+    const iframeElScript = document.createElement("iframe");
+    let loadPromiseScript = ContentTaskUtils.waitForEvent(iframeElScript, "load", false);
+    iframeElScript.src = url;
+    t.appendChild(iframeElScript);
+    await loadPromiseScript;
+    ok(!iframeElScript.contentDocument.documentElement.style, "Content should not be styled");
+
+    SpecialPowers.setBoolPref("svg.disabled", initialPrefValue);
+  });
+</script>
+</pre>
+</body>
+</html>
diff --git a/layout/svg/tests/test_embed_sizing.html b/layout/svg/tests/test_embed_sizing.html
new file mode 100644
index 0000000000..9afbc7ca7d
--- /dev/null
+++ b/layout/svg/tests/test_embed_sizing.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<link rel="stylesheet" href="/tests/SimpleTest/test.css">
+
+<p>Test intrinsic sizing of embed elements referencing SVG documents, both same
+origin and cross origin.</p>
+
+<div id="container" style="width: 500px;"></div>
+
+<script>
+const TESTS = [
+  { outer: "none", inner: "none", expected: "300x150" },
+  { outer: "none", inner: "size", expected: "200x900" },
+  { outer: "none", inner: "ratio", expected: "500x2500" },
+  { outer: "none", inner: "both", expected: "200x400" },
+  { outer: "size", inner: "none", expected: "100x150" },
+  { outer: "size", inner: "size", expected: "100x450" },
+  { outer: "size", inner: "ratio", expected: "100x500" },
+  { outer: "size", inner: "both", expected: "100x200" },
+  { outer: "ratio", inner: "none", expected: "500x1500" },
+  { outer: "ratio", inner: "size", expected: "200x900" },
+  { outer: "ratio", inner: "ratio", expected: "500x1500" },
+  { outer: "ratio", inner: "both", expected: "200x400" },
+  { outer: "both", inner: "none", expected: "100x300" },
+  { outer: "both", inner: "size", expected: "100x300" },
+  { outer: "both", inner: "ratio", expected: "100x300" },
+  { outer: "both", inner: "both", expected: "100x300" },
+];
+
+add_task(async function() {
+  for (let test of TESTS) {
+    for (let crossorigin of [false, true]) {
+      let host = crossorigin ? "http://example.org" : "http://mochi.test:8888";
+      let e = document.createElement("embed");
+
+      switch (test.outer) {
+        case "none":
+          break;
+        case "size":
+          e.style.width = "100px";
+          break;
+        case "ratio":
+          e.style.aspectRatio = "1 / 3";
+          break;
+        case "both":
+          e.style.width = "100px";
+          e.style.aspectRatio = "1 / 3";
+          break;
+        default:
+          throw new Error("unexpected subtest");
+      }
+
+      await new Promise(function(resolve) {
+        e.src = host + location.pathname.replace("test_embed_sizing.html", `file_embed_sizing_${test.inner}.svg`);
+        e.onload = resolve;
+        container.append(e);
+      });
+
+      let desc = `Subtest (${test.outer}/${test.inner}/${crossorigin ? 'cross' : 'same'} origin)`;
+      is(`${e.offsetWidth}x${e.offsetHeight}`, test.expected, desc);
+      e.remove();
+    }
+  }
+});
+</script>
diff --git a/layout/svg/tests/test_filter_crossorigin.html b/layout/svg/tests/test_filter_crossorigin.html
new file mode 100644
index 0000000000..e31c13bee1
--- /dev/null
+++ b/layout/svg/tests/test_filter_crossorigin.html
@@ -0,0 +1,60 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=695385
+-->
+<head>
+  <meta charset="utf-8">
+  <title>Test for Bug 695385</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="/tests/SimpleTest/WindowSnapshot.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body onload="run()">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=695385">Mozilla Bug 695385</a>
+<br>
+<!-- These iframes' renderings are expected to match: -->
+<iframe src="http://mochi.test:8888/tests/layout/svg/tests/file_filter_crossorigin.svg"></iframe>
+<iframe src="file_black_yellow.svg"></iframe>
+<br>
+<!-- These iframes' renderings are expected to match: -->
+<iframe src="http://example.org/tests/layout/svg/tests/file_filter_crossorigin.svg"></iframe>
+<iframe src="file_yellow_black.svg"></iframe>
+
+<pre id="test">
+<script type="application/javascript">
+
+function promiseExecuteSoon() {
+  return new Promise(SimpleTest.executeSoon);
+}
+
+// Main Function
+async function run() {
+  SimpleTest.waitForExplicitFinish();
+
+  // XXXdholbert Wait a few ticks, to give the iframes a little more
+  // opportunity to load their external resources before we call
+  // snapshotWindow. This is an attempt at a workaround/diagnostic for
+  // https://bugzilla.mozilla.org/show_bug.cgi?id=1706542
+  for (let i = 0; i < 60; i++) {
+    await promiseExecuteSoon();
+  }
+
+  let snapshots = new Array(4);
+  for (let i = 0; i < snapshots.length; i++) {
+    snapshots[i] = await snapshotWindow(frames[i], false);
+  }
+
+  // Compare mochi.test iframe against its reference:
+  assertSnapshots(snapshots[0], snapshots[1], true, null,
+                  "Testcase loaded from mochi.test", "Reference: black/yellow");
+
+  // Compare example.org iframe against its reference:
+  assertSnapshots(snapshots[2], snapshots[3], true, null,
+                  "Testcase loaded from example.org", "Reference: yellow/black");
+  SimpleTest.finish();
+}
+</script>
+</pre>
+</body>
+</html>
diff --git a/layout/svg/tests/test_hover_near_text.html b/layout/svg/tests/test_hover_near_text.html
new file mode 100644
index 0000000000..2bf808e61a
--- /dev/null
+++ b/layout/svg/tests/test_hover_near_text.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8"/>
+        <title>Test mouse hover near text element inside svg element with viewBox attribute</title>
+        <script src="/tests/SimpleTest/SimpleTest.js"></script>
+    </head>
+    <body style="margin:0">
+        <div>
+            <svg viewBox="-1 -1 2 2" width="300" height="300">
+                <text style="font-size:0.1px" onmouseover="this.setAttribute('fill', 'red')">Hi</text>
+            </svg>
+        </div>
+        <p>
+            <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1519144">Mozilla Bug 1519144</a>
+        </p>
+        <script type="application/javascript">
+            let utils = SpecialPowers.getDOMWindowUtils(window);
+            utils.sendMouseEvent('mousemove', 155, 125, 0, 0, 0); //hover above the text
+            utils.sendMouseEvent('mousemove', 125, 155, 0, 0, 0); //hover to the left of the text
+            requestIdleCallback(() => {
+                ok(!document.getElementsByTagName('text')[0].hasAttribute('fill'),
+                   'Text element should not receive an event');
+                SimpleTest.finish();
+            });
+            SimpleTest.waitForExplicitFinish()
+        </script>
+    </body>
+</html>
diff --git a/layout/svg/tests/test_multiple_font_size.html b/layout/svg/tests/test_multiple_font_size.html
new file mode 100644
index 0000000000..aca32eac03
--- /dev/null
+++ b/layout/svg/tests/test_multiple_font_size.html
@@ -0,0 +1,25 @@
+<!DOCTYPE HTML>
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<link rel="stylesheet" href="/tests/SimpleTest/test.css">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1370646">Mozilla Bug 1370646</a>
+
+<svg xmlns="http://www.w3.org/2000/svg" width="440" height="100" viewBox="0 0 440 100">
+  <text>
+    <tspan id="a" style="font-size:100px">3</tspan>
+  </text>
+  <text>
+    <tspan id="b" style="font-size:100px">3</tspan>
+    <tspan style="font-size:0.1px">0</tspan>
+  </text>
+</svg>
+
+<script type="application/javascript">
+  SimpleTest.waitForExplicitFinish();
+
+  let alen = document.getElementById("a").getComputedTextLength(),
+      blen = document.getElementById("b").getComputedTextLength();
+
+  SimpleTest.isfuzzy(alen, blen, 5, "lengths should be close");
+
+  SimpleTest.finish();
+</script>
diff --git a/layout/svg/tests/test_use_tree_cycle.html b/layout/svg/tests/test_use_tree_cycle.html
new file mode 100644
index 0000000000..e820f0f2a2
--- /dev/null
+++ b/layout/svg/tests/test_use_tree_cycle.html
@@ -0,0 +1,37 @@
+<!doctype html>
+<title>Test for bug 1531333</title>
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<link rel="stylesheet" href="/tests/SimpleTest/test.css">
+<style>
+  symbol { display: block }
+</style>
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="10" height="10">
+  <symbol id="svg-sprite" viewBox="0 0 133 230866">
+    <title>svg-sprite</title>
+    <symbol id="svg-sprite" viewBox="0 0 133 230866">
+        <title>svg-sprite</title>
+        <use xlink:href="#svg-sprite" width="500" height="500" />
+    </symbol>
+    <use xlink:href="#svg-sprite" y="1601" width="133" height="228958" />
+  </symbol>
+  <use xlink:href="#svg-sprite" y="1601" width="133" height="230866" />
+</svg>
+<script>
+function countUseElements(subtreeRoot) {
+  if (!subtreeRoot)
+    return 0;
+
+  let i = 0;
+  for (const use of subtreeRoot.querySelectorAll("use"))
+    i += 1 + countUseElements(SpecialPowers.wrap(use).openOrClosedShadowRoot);
+  return i;
+}
+SimpleTest.waitForExplicitFinish();
+onload = function() {
+  document.body.offsetTop;
+  // The three in the document, plus the two created from the element that's
+  // not in the <symbol> subtree.
+  is(countUseElements(document), 5, "Shouldn't create more than 5 use elements");
+  SimpleTest.finish();
+}
+</script>
-- 
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