diff --git a/css/selectors/focus-visible-script-focus-001.html b/css/selectors/focus-visible-script-focus-001.html
new file mode 100644
index 00000000000000..71cd42168d01f4
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-001.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus without any previous user interaction matches :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick green;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: red;
+  }
+</style>
+
+<p>This test checks that a script focus when the user hasn't interacted with the page yet, always matches <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>If the element that says "Focused" has a red background then the test result is FAILURE, if it has a green outline then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  async_test(function(t) {
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).outlineColor, "rgb(0, 128, 0)", `outlineColor for ${target.tagName}#${target.id} should be green`);
+      assert_not_equals(getComputedStyle(target).backgroundColor, "rgb(255, 0, 0)", `backgroundColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+  }, "Script focus without any previous user interaction matches :focus-visible");
+
+  target.focus();
+</script>
diff --git a/css/selectors/focus-visible-script-focus-002.tentative.html b/css/selectors/focus-visible-script-focus-002.tentative.html
new file mode 100644
index 00000000000000..45a9d71516259b
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-002.tentative.html
@@ -0,0 +1,64 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after mouse click does match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick green;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: red;
+  }
+</style>
+
+<p>This test checks that a script focus after a mouse click does match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Click in some part of the page other than the element that says "Focused".</li>
+  <li>If the element that says "Focused" has a red background then the test result is FAILURE, if it has a green outline then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  setup({ explicit_done: true });
+
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  document.addEventListener("click", () => {
+    target.focus();
+  });
+
+  async_test(function(t) {
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).outlineColor, "rgb(0, 128, 0)", `outlineColor for ${target.tagName}#${target.id} should be green`);
+      assert_not_equals(getComputedStyle(target).backgroundColor, "rgb(255, 0, 0)", `backgroundColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    test_driver.click(document.body).then(() => done());
+  }, "Script focus after mouse click does match :focus-visible");
+</script>
+
diff --git a/css/selectors/focus-visible-script-focus-003.tentative.html b/css/selectors/focus-visible-script-focus-003.tentative.html
new file mode 100644
index 00000000000000..49c80c2d96fb57
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-003.tentative.html
@@ -0,0 +1,64 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after blur after mouse click does match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick green;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: red;
+  }
+</style>
+
+<p>This test checks that a script focus after blur after a mouse click does match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Click in some part of the page other than the element that says "Focused".</li>
+  <li>If the element that says "Focused" has a red background then the test result is FAILURE, if it has a green outline then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  setup({ explicit_done: true });
+
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  document.addEventListener("click", () => {
+    document.activeElement.blur();
+    target.focus();
+  });
+
+  async_test(function(t) {
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).outlineColor, "rgb(0, 128, 0)", `outlineColor for ${target.tagName}#${target.id} should be green`);
+      assert_not_equals(getComputedStyle(target).backgroundColor, "rgb(255, 0, 0)", `backgroundColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    test_driver.click(document.body).then(() => done());
+  }, "Script focus after blur after mouse click does match :focus-visible");
+</script>
diff --git a/css/selectors/focus-visible-script-focus-004.html b/css/selectors/focus-visible-script-focus-004.html
new file mode 100644
index 00000000000000..917204f1b0ac98
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-004.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after keyboard input does match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick green;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: red;
+  }
+</style>
+
+<p>This test checks that a script focus after a keyboard input does match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Type some letter with the keyboard without having done anything before.</li>
+  <li>If the element that says "Focused" has a red background then the test result is FAILURE, if it has a green outline then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  document.addEventListener("keypress", () => {
+    target.focus();
+  });
+
+  async_test(function(t) {
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).outlineColor, "rgb(0, 128, 0)", `outlineColor for ${target.tagName}#${target.id} should be green`);
+      assert_not_equals(getComputedStyle(target).backgroundColor, "rgb(255, 0, 0)", `backgroundColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    test_driver.send_keys(document.body, "a");
+  }, "Script focus after keyboard event does match :focus-visible");
+</script>
+
diff --git a/css/selectors/focus-visible-script-focus-005.html b/css/selectors/focus-visible-script-focus-005.html
new file mode 100644
index 00000000000000..5a343780dd8178
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-005.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after blur after keyboard input does match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick green;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: red;
+  }
+</style>
+
+<p>This test checks that a script focus after blur after a keyboard input does match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Type some letter with the keyboard without having done anything before.</li>
+  <li>If the element that says "Focused" has a red background then the test result is FAILURE, if it has a green outline then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  document.addEventListener("keypress", () => {
+    document.activeElement.blur();
+    target.focus();
+  });
+
+  async_test(function(t) {
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).outlineColor, "rgb(0, 128, 0)", `outlineColor for ${target.tagName}#${target.id} should be green`);
+      assert_not_equals(getComputedStyle(target).backgroundColor, "rgb(255, 0, 0)", `backgroundColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    test_driver.send_keys(document.body, "a");
+  }, "Script focus after blur after keyboard event does match :focus-visible");
+</script>
+
diff --git a/css/selectors/focus-visible-script-focus-006.tentative.html b/css/selectors/focus-visible-script-focus-006.tentative.html
new file mode 100644
index 00000000000000..11a102d6feee70
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-006.tentative.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after mouse click on a NOT focusable element does match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick green;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: red;
+  }
+</style>
+
+<p>This test checks that a script focus after a mouse click on a NOT focusable element does match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Click on the element that says "Click me".</li>
+  <li>If the element that says "Focused" has a red background then the test result is FAILURE, if it has a green outline then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<div id="initial">Click me</div>
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  setup({ explicit_done: true });
+
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  initial.addEventListener("click", () => {
+    target.focus();
+  });
+
+  async_test(function(t) {
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).outlineColor, "rgb(0, 128, 0)", `outlineColor for ${target.tagName}#${target.id} should be green`);
+      assert_not_equals(getComputedStyle(target).backgroundColor, "rgb(255, 0, 0)", `backgroundColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    test_driver.click(initial).then(() => done());
+  }, "Script focus after mouse click on a NOT focusable element does match :focus-visible");
+</script>
+
diff --git a/css/selectors/focus-visible-script-focus-007.tentative.html b/css/selectors/focus-visible-script-focus-007.tentative.html
new file mode 100644
index 00000000000000..f5a8b9912c91d0
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-007.tentative.html
@@ -0,0 +1,66 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after blur after mouse click on a NOT focusable element does match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick green;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: red;
+  }
+</style>
+
+<p>This test checks that a script focus after blur after a mouse click on a NOT focusable element does match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Click on the element that says "Click me".</li>
+  <li>If the element that says "Focused" has a red background then the test result is FAILURE, if it has a green outline then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<div id="initial">Click me</div>
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  setup({ explicit_done: true });
+
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  initial.addEventListener("click", () => {
+    document.activeElement.blur();
+    target.focus();
+  });
+
+  async_test(function(t) {
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).outlineColor, "rgb(0, 128, 0)", `outlineColor for ${target.tagName}#${target.id} should be green`);
+      assert_not_equals(getComputedStyle(target).backgroundColor, "rgb(255, 0, 0)", `backgroundColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    test_driver.click(initial).then(() => done());
+  }, "Script focus after blur after mouse click on a NOT focusable element does match :focus-visible");
+</script>
+
diff --git a/css/selectors/focus-visible-script-focus-008.html b/css/selectors/focus-visible-script-focus-008.html
new file mode 100644
index 00000000000000..ce73aa94102588
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-008.html
@@ -0,0 +1,64 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after mouse click on a focusable element that does not match :focus-visible, does NOT match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick red;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: lime;
+  }
+</style>
+
+<p>This test checks that a script focus after a mouse click on a focusable element that does not match <code>:focus visible</code>, does NOT match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Click on the element that says "Click me".</li>
+  <li>If the element that says "Focused" has a red outline then the test result is FAILURE, if it has a green background then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<div id="initial" tabindex="0">Click me</div>
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  setup({ explicit_done: true });
+
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  initial.addEventListener("click", () => {
+    target.focus();
+  });
+
+  async_test(function(t) {
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).backgroundColor, "rgb(0, 255, 0)", `backgroundColor for ${target.tagName}#${target.id} should be lime`);
+      assert_not_equals(getComputedStyle(target).outlineColor, "rgb(255, 0, 0)", `outlineColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    test_driver.click(initial).then(() => done());
+  }, "Script focus after mouse click on a focusable element that does not match :focus-visible, does NOT match :focus-visible");
+</script>
diff --git a/css/selectors/focus-visible-script-focus-009.html b/css/selectors/focus-visible-script-focus-009.html
new file mode 100644
index 00000000000000..e29928b841bd86
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-009.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after blur after mouse click on a focusable element that does not match :focus-visible, does NOT match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick red;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: lime;
+  }
+</style>
+
+<p>This test checks that a script focus after blur after a mouse click on a focusable element that does not match <code>:focus visible</code>, does NOT match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Click on the element that says "Click me".</li>
+  <li>If the element that says "Focused" has a red outline then the test result is FAILURE, if it has a green background then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<div id="initial" tabindex="0">Click me</div>
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  setup({ explicit_done: true });
+
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  initial.addEventListener("click", () => {
+    document.activeElement.blur();
+    target.focus();
+  });
+
+  async_test(function(t) {
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).backgroundColor, "rgb(0, 255, 0)", `backgroundColor for ${target.tagName}#${target.id} should be lime`);
+      assert_not_equals(getComputedStyle(target).outlineColor, "rgb(255, 0, 0)", `outlineColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    test_driver.click(initial).then(() => done());
+  }, "Script focus after blur after mouse click on a focusable element that does not match :focus-visible, does NOT match :focus-visible");
+</script>
diff --git a/css/selectors/focus-visible-script-focus-010.html b/css/selectors/focus-visible-script-focus-010.html
new file mode 100644
index 00000000000000..2c8671bbddf73c
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-010.html
@@ -0,0 +1,64 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after mouse click on a focusable element that matches :focus-visible, does NOT match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick red;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: lime;
+  }
+</style>
+
+<p>This test checks that a script focus after a mouse click on a focusable element that matches <code>:focus visible</code>, does NOT match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Click on the element that says "Click me".</li>
+  <li>If the element that says "Focused" has a red outline then the test result is FAILURE, if it has a green background then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<input id="initial" value="Click me">
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  setup({ explicit_done: true });
+
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  initial.addEventListener("click", () => {
+    target.focus();
+  });
+
+  async_test(function(t) {
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).backgroundColor, "rgb(0, 255, 0)", `backgroundColor for ${target.tagName}#${target.id} should be lime`);
+      assert_not_equals(getComputedStyle(target).outlineColor, "rgb(255, 0, 0)", `outlineColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    test_driver.click(initial).then(() => done());
+  }, "Script focus after mouse click on a focusable element that matches :focus-visible, does NOT match :focus-visible");
+</script>
diff --git a/css/selectors/focus-visible-script-focus-011.html b/css/selectors/focus-visible-script-focus-011.html
new file mode 100644
index 00000000000000..8767cd5cfd876d
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-011.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after blur after mouse click on a focusable element that matches :focus-visible, does NOT match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick red;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: lime;
+  }
+</style>
+
+<p>This test checks that a script focus after blur after a mouse click on a focusable element that matches <code>:focus visible</code>, does NOT match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Click on the element that says "Click me".</li>
+  <li>If the element that says "Focused" has a red outline then the test result is FAILURE, if it has a green background then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<input id="initial" value="Click me">
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  setup({ explicit_done: true });
+
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  initial.addEventListener("click", () => {
+    document.activeElement.blur();
+    target.focus();
+  });
+
+  async_test(function(t) {
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).backgroundColor, "rgb(0, 255, 0)", `backgroundColor for ${target.tagName}#${target.id} should be lime`);
+      assert_not_equals(getComputedStyle(target).outlineColor, "rgb(255, 0, 0)", `outlineColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    test_driver.click(initial).then(() => done());
+  }, "Script focus after blur after mouse click on a focusable element that matches :focus-visible, does NOT match :focus-visible");
+</script>
diff --git a/css/selectors/focus-visible-script-focus-012.html b/css/selectors/focus-visible-script-focus-012.html
new file mode 100644
index 00000000000000..a9bcbe3544eaab
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-012.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after keyboard focus does match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick green;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: red;
+  }
+</style>
+
+<p>This test checks that a script focus after a keyboard focus does match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Type TAB key.</li>
+  <li>If the element that says "Focused" has a red background then the test result is FAILURE, if it has a green outline then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<div id="initial" tabindex="0">Focus me</div>
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  initial.addEventListener("focus", () => {
+    target.focus();
+  });
+
+  async_test(function(t) {
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).outlineColor, "rgb(0, 128, 0)", `outlineColor for ${target.tagName}#${target.id} should be green`);
+      assert_not_equals(getComputedStyle(target).backgroundColor, "rgb(255, 0, 0)", `backgroundColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    const tab_key = "\ue004";
+    test_driver.send_keys(document.body, tab_key);
+  }, "Script focus after keyboard focus does match :focus-visible");
+</script>
diff --git a/css/selectors/focus-visible-script-focus-013.html b/css/selectors/focus-visible-script-focus-013.html
new file mode 100644
index 00000000000000..369c7fc41e5a82
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-013.html
@@ -0,0 +1,64 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after blur after keyboard focus does match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick green;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: red;
+  }
+</style>
+
+<p>This test checks that a script focus after blur after a keyboard focus does match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Type TAB key.</li>
+  <li>If the element that says "Focused" has a red background then the test result is FAILURE, if it has a green outline then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<div id="initial" tabindex="0">Focus me</div>
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  initial.addEventListener("focus", () => {
+    document.activeElement.blur();
+    target.focus();
+  });
+
+  async_test(function(t) {
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).outlineColor, "rgb(0, 128, 0)", `outlineColor for ${target.tagName}#${target.id} should be green`);
+      assert_not_equals(getComputedStyle(target).backgroundColor, "rgb(255, 0, 0)", `backgroundColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    const tab_key = "\ue004";
+    test_driver.send_keys(document.body, tab_key);
+  }, "Script focus after blur after keyboard focus does match :focus-visible");
+</script>
diff --git a/css/selectors/focus-visible-script-focus-014.html b/css/selectors/focus-visible-script-focus-014.html
new file mode 100644
index 00000000000000..2621c0493fe39a
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-014.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after keyboard input does match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick green;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: red;
+  }
+</style>
+
+<p>This test checks that a script focus after a keyboard input does match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Click on the input below and type some letter.</li>
+  <li>If the element that says "Focused" has a red background then the test result is FAILURE, if it has a green outline then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<input id="initial">
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  initial.addEventListener("keypress", () => {
+    target.focus();
+  });
+
+  async_test(function(t) {
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).outlineColor, "rgb(0, 128, 0)", `outlineColor for ${target.tagName}#${target.id} should be green`);
+      assert_not_equals(getComputedStyle(target).backgroundColor, "rgb(255, 0, 0)", `backgroundColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    initial.focus();
+    test_driver.send_keys(initial, "a");
+  }, "Script focus after keyboard input does match :focus-visible");
+</script>
diff --git a/css/selectors/focus-visible-script-focus-015.html b/css/selectors/focus-visible-script-focus-015.html
new file mode 100644
index 00000000000000..ed91ff1e5c36af
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-015.html
@@ -0,0 +1,64 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after blur after keyboard input does match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick green;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: red;
+  }
+</style>
+
+<p>This test checks that a script focus after blur after a keyboard input does match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Click on the input below and type some letter.</li>
+  <li>If the element that says "Focused" has a red background then the test result is FAILURE, if it has a green outline then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<input id="initial">
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  initial.addEventListener("keypress", () => {
+    document.activeElement.blur();
+    target.focus();
+  });
+
+  async_test(function(t) {
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).outlineColor, "rgb(0, 128, 0)", `outlineColor for ${target.tagName}#${target.id} should be green`);
+      assert_not_equals(getComputedStyle(target).backgroundColor, "rgb(255, 0, 0)", `backgroundColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    initial.focus();
+    test_driver.send_keys(initial, "a");
+  }, "Script focus after blur after keyboard input does match :focus-visible");
+</script>
diff --git a/css/selectors/focus-visible-script-focus-016.tentative.html b/css/selectors/focus-visible-script-focus-016.tentative.html
new file mode 100644
index 00000000000000..8f88c6ce703be0
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-016.tentative.html
@@ -0,0 +1,72 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after mouse click on a NOT focusable element after editing an input does match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick green;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: red;
+  }
+</style>
+
+<p>This test checks that a script focus after a mouse click on a NOT focusable element after editing an input does match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Click on the input below and type some letter.</li>
+  <li>Then click on the element that says "Click me".</li>
+  <li>If the element that says "Focused" has a red background then the test result is FAILURE, if it has a green outline then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<input id="initial">
+<div id="trigger">Click me</div>
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  setup({ explicit_done: true });
+
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  trigger.addEventListener("click", () => {
+    target.focus();
+  });
+
+  async_test(function(t) {
+    initial.addEventListener("keypress", () => {
+      test_driver.click(trigger).then(() => done());
+    });
+
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).outlineColor, "rgb(0, 128, 0)", `outlineColor for ${target.tagName}#${target.id} should be green`);
+      assert_not_equals(getComputedStyle(target).backgroundColor, "rgb(255, 0, 0)", `backgroundColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    initial.focus();
+    test_driver.send_keys(initial, "a");
+  }, "Script focus after mouse click on a NOT focusable element after editing an input does match :focus-visible");
+</script>
+
diff --git a/css/selectors/focus-visible-script-focus-017.tentative.html b/css/selectors/focus-visible-script-focus-017.tentative.html
new file mode 100644
index 00000000000000..216f43f8086142
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-017.tentative.html
@@ -0,0 +1,74 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after blur after mouse click on a NOT focusable element after editing an input does match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick green;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: red;
+  }
+</style>
+
+<p>This test checks that a script focus after blur after a mouse click on a NOT focusable element after editing an input does match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Click on the input below and type some letter.</li>
+  <li>Then click on the element that says "Click me".</li>
+  <li>If the element that says "Focused" has a red background then the test result is FAILURE, if it has a green outline then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<input id="initial">
+<div id="trigger">Click me</div>
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  setup({ explicit_done: true });
+
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  trigger.addEventListener("click", () => {
+    document.activeElement.blur();
+    target.focus();
+  });
+
+  async_test(function(t) {
+    initial.addEventListener("keypress", () => {
+      test_driver.click(trigger).then(() => done());
+    });
+
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).outlineColor, "rgb(0, 128, 0)", `outlineColor for ${target.tagName}#${target.id} should be green`);
+      assert_not_equals(getComputedStyle(target).backgroundColor, "rgb(255, 0, 0)", `backgroundColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    initial.focus();
+    test_driver.send_keys(initial, "a");
+  }, "Script focus after blur after mouse click on a NOT focusable element after editing an input does match :focus-visible");
+</script>
+
+
diff --git a/css/selectors/focus-visible-script-focus-018.html b/css/selectors/focus-visible-script-focus-018.html
new file mode 100644
index 00000000000000..dc4f5c7047e493
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-018.html
@@ -0,0 +1,71 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after mouse click on a focusable element after editing an input does NOT match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick red;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: lime;
+  }
+</style>
+
+<p>This test checks that a script focus after a mouse click on a focusable element after editing an input does NOT match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Click on the input below and type some letter.</li>
+  <li>Then click on the element that says "Click me".</li>
+  <li>If the element that says "Focused" has a red outline then the test result is FAILURE, if it has a green background then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<input id="initial">
+<div id="trigger" tabindex="0">Click me</div>
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  setup({ explicit_done: true });
+
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  trigger.addEventListener("click", () => {
+    target.focus();
+  });
+
+  async_test(function(t) {
+    initial.addEventListener("keypress", () => {
+      test_driver.click(trigger).then(() => done());
+    });
+
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).backgroundColor, "rgb(0, 255, 0)", `backgroundColor for ${target.tagName}#${target.id} should be lime`);
+      assert_not_equals(getComputedStyle(target).outlineColor, "rgb(255, 0, 0)", `outlineColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    initial.focus();
+    test_driver.send_keys(initial, "a");
+  }, "Script focus after mouse click on a focusable element after editing an input does NOT match :focus-visible");
+</script>
diff --git a/css/selectors/focus-visible-script-focus-019.html b/css/selectors/focus-visible-script-focus-019.html
new file mode 100644
index 00000000000000..c427de2bf9af15
--- /dev/null
+++ b/css/selectors/focus-visible-script-focus-019.html
@@ -0,0 +1,72 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test (Selectors): Script focus after blur after mouse click on a focusable element after editing an input does NOT match :focus-visible</title>
+<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
+<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="/css/support/parsing-testcommon.js"></script>
+<style>
+  #warning {
+    display: none;
+    background: red;
+  }
+
+  @supports not (selector(:focus-visible)) {
+    #instructions {
+      display: none;
+    }
+
+    #warning {
+      display: block;
+    }
+  }
+
+  :focus-visible {
+    outline: solid thick red;
+  }
+
+  :focus:not(:focus-visible) {
+    background-color: lime;
+  }
+</style>
+
+<p>This test checks that a script focus after blur after a mouse click on a focusable element after editing an input does NOT match <code>:focus-visible</code>.</p>
+<ol id="instructions">
+  <li>Click on the input below and type some letter.</li>
+  <li>Then click on the element that says "Click me".</li>
+  <li>If the element that says "Focused" has a red outline then the test result is FAILURE, if it has a green background then the test result is SUCCESS.</li>
+</ol>
+<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
+
+<input id="initial">
+<div id="trigger" tabindex="0">Click me</div>
+<div id="target" tabindex="0">Focused</div>
+
+<script>
+  setup({ explicit_done: true });
+
+  // Check that :focus-visible is supported.
+  test_valid_selector(':focus-visible');
+
+  trigger.addEventListener("click", () => {
+    document.activeElement.blur();
+    target.focus();
+  });
+
+  async_test(function(t) {
+    initial.addEventListener("keypress", () => {
+      test_driver.click(trigger).then(() => done());
+    });
+
+    target.addEventListener("focus", t.step_func_done(function() {
+      assert_equals(getComputedStyle(target).backgroundColor, "rgb(0, 255, 0)", `backgroundColor for ${target.tagName}#${target.id} should be lime`);
+      assert_not_equals(getComputedStyle(target).outlineColor, "rgb(255, 0, 0)", `outlineColor for ${target.tagName}#${target.id} should NOT be red`);
+    }));
+
+    initial.focus();
+    test_driver.send_keys(initial, "a");
+  }, "Script focus after blur after mouse click on a focusable element after editing an input does NOT match :focus-visible");
+</script>
