From c3b101301877fd95072b61a2fe11d9e6ef5f86dd Mon Sep 17 00:00:00 2001
From: Callum Law <callumlaw1709@outlook.com>
Date: Thu, 31 Jul 2025 00:14:04 +1200
Subject: [PATCH] LibWeb: Skip inverted non-canonical values when simplifying
 product node

This matches the logic with the non-inverted children.

Gains us 2 WPT tests.
---
 .../CSS/StyleValues/CalculatedStyleValue.cpp  | 76 ++++++---------
 ...calc-in-media-queries-with-mixed-units.txt | 18 ++++
 .../getComputedStyle-calc-mixed-units-003.txt | 13 +++
 ...alc-in-media-queries-with-mixed-units.html | 35 +++++++
 ...getComputedStyle-calc-mixed-units-003.html | 97 +++++++++++++++++++
 .../css-values/support/mixed-units-01.html    | 16 +++
 .../css-values/support/mixed-units-02.html    | 16 +++
 .../css-values/support/mixed-units-03.html    | 16 +++
 .../css-values/support/mixed-units-04.html    | 16 +++
 .../css-values/support/mixed-units-05.html    | 16 +++
 .../css-values/support/mixed-units-06.html    | 16 +++
 .../css-values/support/mixed-units-07.html    | 16 +++
 .../css-values/support/mixed-units-08.html    | 16 +++
 .../css-values/support/mixed-units-09.html    | 16 +++
 .../css-values/support/mixed-units-10.html    | 16 +++
 .../css-values/support/mixed-units-11.html    | 16 +++
 .../css-values/support/mixed-units-12.html    | 16 +++
 17 files changed, 387 insertions(+), 44 deletions(-)
 create mode 100644 Tests/LibWeb/Text/expected/wpt-import/css/css-values/calc-in-media-queries-with-mixed-units.txt
 create mode 100644 Tests/LibWeb/Text/expected/wpt-import/css/css-values/getComputedStyle-calc-mixed-units-003.txt
 create mode 100644 Tests/LibWeb/Text/input/wpt-import/css/css-values/calc-in-media-queries-with-mixed-units.html
 create mode 100644 Tests/LibWeb/Text/input/wpt-import/css/css-values/getComputedStyle-calc-mixed-units-003.html
 create mode 100644 Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-01.html
 create mode 100644 Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-02.html
 create mode 100644 Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-03.html
 create mode 100644 Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-04.html
 create mode 100644 Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-05.html
 create mode 100644 Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-06.html
 create mode 100644 Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-07.html
 create mode 100644 Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-08.html
 create mode 100644 Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-09.html
 create mode 100644 Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-10.html
 create mode 100644 Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-11.html
 create mode 100644 Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-12.html

diff --git a/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.cpp b/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.cpp
index 758cd2c9b8c..cd8b834e02e 100644
--- a/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.cpp
+++ b/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.cpp
@@ -3304,32 +3304,39 @@ NonnullRefPtr<CalculationNode const> simplify_a_calculation_tree(CalculationNode
         //    its child’s value), expressed in the result’s canonical unit.
         Optional<CalculatedStyleValue::CalculationResult> accumulated_result;
         bool is_valid = true;
+
+        auto accumulate = [&accumulated_result, &resolution_context, &context](NumericCalculationNode const& numeric_child, bool invert) {
+            auto child_type = numeric_child.numeric_type();
+
+            if (!child_type.has_value())
+                return false;
+
+            // FIXME: The spec doesn't handle unresolved percentages here, but if we don't exit when we see one,
+            //        we'll get a wrongly-typed value after multiplying the types.
+            //        Same goes for other numerics with non-canonical units.
+            //        Spec bug: https://github.com/w3c/csswg-drafts/issues/11588
+            if ((numeric_child.value().has<Percentage>() && context.percentages_resolve_as.has_value()) || !numeric_child.is_in_canonical_unit())
+                return false;
+
+            auto child_value = CalculatedStyleValue::CalculationResult::from_value(numeric_child.value(), resolution_context, child_type);
+
+            if (invert)
+                child_value.invert();
+
+            if (accumulated_result.has_value())
+                accumulated_result->multiply_by(child_value);
+            else
+                accumulated_result = child_value;
+
+            if (!accumulated_result->type().has_value())
+                return false;
+
+            return true;
+        };
+
         for (auto const& child : children) {
             if (child->type() == CalculationNode::Type::Numeric) {
-                auto const& numeric_child = as<NumericCalculationNode>(*child);
-                auto child_type = numeric_child.numeric_type();
-                if (!child_type.has_value()) {
-                    is_valid = false;
-                    break;
-                }
-
-                // FIXME: The spec doesn't handle unresolved percentages here, but if we don't exit when we see one,
-                //        we'll get a wrongly-typed value after multiplying the types.
-                //        Same goes for other numerics with non-canonical units.
-                //        Spec bug: https://github.com/w3c/csswg-drafts/issues/11588
-                if ((numeric_child.value().has<Percentage>() && context.percentages_resolve_as.has_value())
-                    || !numeric_child.is_in_canonical_unit()) {
-                    is_valid = false;
-                    break;
-                }
-
-                auto child_value = CalculatedStyleValue::CalculationResult::from_value(numeric_child.value(), resolution_context, child_type);
-                if (accumulated_result.has_value()) {
-                    accumulated_result->multiply_by(child_value);
-                } else {
-                    accumulated_result = move(child_value);
-                }
-                if (!accumulated_result->type().has_value()) {
+                if (!accumulate(as<NumericCalculationNode>(*child), false)) {
                     is_valid = false;
                     break;
                 }
@@ -3337,26 +3344,7 @@ NonnullRefPtr<CalculationNode const> simplify_a_calculation_tree(CalculationNode
             }
             if (child->type() == CalculationNode::Type::Invert) {
                 auto const& invert_child = as<InvertCalculationNode>(*child);
-                if (invert_child.child().type() != CalculationNode::Type::Numeric) {
-                    is_valid = false;
-                    break;
-                }
-                auto const& grandchild = as<NumericCalculationNode>(invert_child.child());
-
-                auto child_type = child->numeric_type();
-                if (!child_type.has_value()) {
-                    is_valid = false;
-                    break;
-                }
-
-                auto child_value = CalculatedStyleValue::CalculationResult::from_value(grandchild.value(), resolution_context, grandchild.numeric_type());
-                child_value.invert();
-                if (accumulated_result.has_value()) {
-                    accumulated_result->multiply_by(child_value);
-                } else {
-                    accumulated_result = move(child_value);
-                }
-                if (!accumulated_result->type().has_value()) {
+                if (invert_child.child().type() != CalculationNode::Type::Numeric || !accumulate(as<NumericCalculationNode>(invert_child.child()), true)) {
                     is_valid = false;
                     break;
                 }
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/css-values/calc-in-media-queries-with-mixed-units.txt b/Tests/LibWeb/Text/expected/wpt-import/css/css-values/calc-in-media-queries-with-mixed-units.txt
new file mode 100644
index 00000000000..c269714dd6f
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/css-values/calc-in-media-queries-with-mixed-units.txt
@@ -0,0 +1,18 @@
+Harness status: OK
+
+Found 12 tests
+
+2 Pass
+10 Fail
+Pass	box should be orange if the calc between px-em in @media was correct
+Fail	box should be orange if the calc between vh+em in @media was correct
+Fail	box should be orange if the calc between vw-em in @media was correct
+Fail	box should be orange if the calc between vw+vh in @media was correct
+Fail	box should be orange if the calc between vh+px in @media was correct
+Fail	box should be orange if the calc between vw+px in @media was correct
+Pass	box should be orange if the calc between px/em*em in @media was correct
+Fail	box should be orange if the calc between vh*em in @media was correct
+Fail	box should be orange if the calc between vh*vw/em*px/vh in @media was correct
+Fail	box should be orange if the calc between vw/px*vh in @media was correct
+Fail	box should be orange if the calc between vh*vw/em*px in @media was correct
+Fail	box should be orange if the calc between vw*vh*px*em/px/px/px in @media was correct
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/css-values/getComputedStyle-calc-mixed-units-003.txt b/Tests/LibWeb/Text/expected/wpt-import/css/css-values/getComputedStyle-calc-mixed-units-003.txt
new file mode 100644
index 00000000000..ceb155c433b
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/css-values/getComputedStyle-calc-mixed-units-003.txt
@@ -0,0 +1,13 @@
+Harness status: OK
+
+Found 7 tests
+
+5 Pass
+2 Fail
+Fail	testing width: calc(5px * 10lh / 1px)
+Pass	testing width: calc(20% * 0.5em / 1px)
+Pass	testing width: calc(4px * 4em / 1px)
+Fail	testing width: calc(400px / 4lh * 1px)
+Pass	testing width: calc(20% / 0.5em * 1px)
+Pass	testing width: calc(52px * 1px / 10%)
+Pass	testing width: calc(100px * 1px / 1px / 1)
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/css-values/calc-in-media-queries-with-mixed-units.html b/Tests/LibWeb/Text/input/wpt-import/css/css-values/calc-in-media-queries-with-mixed-units.html
new file mode 100644
index 00000000000..9e09cf30a65
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/css-values/calc-in-media-queries-with-mixed-units.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <title>test calc with mixed units in media queries</title>
+    <script src="../../resources/testharness.js"></script>
+    <script src="../../resources/testharnessreport.js"></script>
+    <link rel="help" href="https://www.w3.org/TR/css3-values/#calc-computed-value">
+  </head>
+  <body>
+    <iframe src="./support/mixed-units-01.html" title="px-em" frameborder="0" height="10" width="100"></iframe>
+    <iframe src="./support/mixed-units-02.html" title="vh+em" frameborder="0" height="10" width="100"></iframe>
+    <iframe src="./support/mixed-units-03.html" title="vw-em" frameborder="0" height="10" width="100"></iframe>
+    <iframe src="./support/mixed-units-04.html" title="vw+vh" frameborder="0" height="10" width="100"></iframe>
+    <iframe src="./support/mixed-units-05.html" title="vh+px" frameborder="0" height="10" width="100"></iframe>
+    <iframe src="./support/mixed-units-06.html" title="vw+px" frameborder="0" height="10" width="100"></iframe>
+    <iframe src="./support/mixed-units-07.html" title="px/em*em" frameborder="0" height="10" width="100"></iframe>
+    <iframe src="./support/mixed-units-08.html" title="vh*em" frameborder="0" height="10" width="100"></iframe>
+    <iframe src="./support/mixed-units-09.html" title="vh*vw/em*px/vh" frameborder="0" height="10" width="100"></iframe>
+    <iframe src="./support/mixed-units-10.html" title="vw/px*vh" frameborder="0" height="10" width="100"></iframe>
+    <iframe src="./support/mixed-units-11.html" title="vh*vw/em*px" frameborder="0" height="10" width="100"></iframe>
+    <iframe src="./support/mixed-units-12.html" title="vw*vh*px*em/px/px/px" frameborder="0" height="10" width="100"></iframe>
+    <script>
+      for (const frame of document.querySelectorAll("iframe")) {
+        async_test((t) => {
+          frame.addEventListener("load", t.step_func(() => {
+            const body = frame.contentWindow.document.body;
+            const actual = frame.contentWindow.getComputedStyle(body).getPropertyValue("background-color");
+            assert_equals(actual, "rgb(255, 165, 0)");
+            t.done();
+          }));
+        }, `box should be orange if the calc between ${frame.title} in @media was correct`);
+      }
+    </script>
+  </body>
+</html>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/css-values/getComputedStyle-calc-mixed-units-003.html b/Tests/LibWeb/Text/input/wpt-import/css/css-values/getComputedStyle-calc-mixed-units-003.html
new file mode 100644
index 00000000000..a44fca7380a
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/css-values/getComputedStyle-calc-mixed-units-003.html
@@ -0,0 +1,97 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Values Test: computed value of calc() values using multiplication/division with mixed units</title>
+
+  <link rel="help" href="https://www.w3.org/TR/css-values-4/#calc-computed-value">
+
+  <meta name="flags" content="">
+  <meta content="This meta-test checks for the resolution and absolutization of computed values with mixed units to 'px' when multiplication/division is used." name="assert">
+
+  <script src="../../resources/testharness.js"></script>
+  <script src="../../resources/testharnessreport.js"></script>
+
+  <style>
+  html {
+      font-size: 30px;
+  }
+
+  body {
+      font-size: 16px;
+      line-height: 1.25; /* computed value: 20px */
+      width: 520px;
+      height: 500px;
+      margin: 20px;
+  }
+
+  div#target {
+      height: 100px;
+      width: 100px;
+  }
+  </style>
+
+  <div id="target"></div>
+
+  <script>
+  function startTesting() {
+    var targetElement = document.getElementById("target");
+
+    function verifyComputedStyle(property_name, specified_value, expected_value) {
+      test(function() {
+        targetElement.style.setProperty(property_name, "initial");
+        targetElement.style.setProperty(property_name, specified_value);
+        assert_equals(getComputedStyle(targetElement)[property_name], expected_value);
+      }, `testing ${property_name}: ${specified_value}`);
+    }
+
+    verifyComputedStyle("width", "calc(5px * 10lh / 1px)", "1000px");
+    /*
+      10lh = 200px
+      5px * 200px / 1px = 1000px^2 / 1px = 1000px
+      Total = 1000px
+    */
+
+    verifyComputedStyle("width", "calc(20% * 0.5em / 1px)", "832px");
+    /*
+      20% of 520px = 104px
+      0.5em = 8px
+      104px * 8px / 1px = 832px^2 / 1px = 832px
+      Total = 832px
+    */
+
+    verifyComputedStyle("width", "calc(4px * 4em / 1px)", "256px");
+    /*
+      4em = 64px
+      4px * 64px / 1px = 256px^2 / 1px = 256px
+      Total = 256px
+    */
+
+    verifyComputedStyle("width", "calc(400px / 4lh * 1px)", "5px");
+    /*
+      4lh = 80px
+      400px / 80px * 1px = 5 * 1px = 5px
+      Total = 5px
+    */
+
+    verifyComputedStyle("width", "calc(20% / 0.5em * 1px)", "13px");
+    /*
+      20% of 520px = 104px
+      0.5em = 8px
+      104px / 8px * 1px = 13 * 1px = 13px
+      Total = 13px
+    */
+
+    verifyComputedStyle("width", "calc(52px * 1px / 10%)", "1px");
+    /*
+      10% of 520px = 52px
+      52px * 1px / 52px = 1px
+      Total = 1px
+    */
+
+    verifyComputedStyle("width", "calc(100px * 1px / 1px / 1)", "100px");
+  }
+
+  startTesting();
+
+  </script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-01.html b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-01.html
new file mode 100644
index 00000000000..1969d10b46c
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-01.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <style>
+      body {
+        background: rgb(0, 0, 255);
+      }
+      @media (width: calc(116px - 1em)) {
+        body {
+          background: rgb(255, 165, 0);
+        }
+      }
+    </style>
+  </head>
+  <body></body>
+</html>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-02.html b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-02.html
new file mode 100644
index 00000000000..cbef4633981
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-02.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <style>
+      body {
+        background: rgb(0, 0, 255);
+      }
+      @media (width: calc(200vh + 5em)) {
+        body {
+          background: rgb(255, 165, 0);
+        }
+      }
+    </style>
+  </head>
+  <body></body>
+</html>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-03.html b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-03.html
new file mode 100644
index 00000000000..0a22fcb5e71
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-03.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <style>
+      body {
+        background: rgb(0, 0, 255);
+      }
+      @media (height: calc(100vw - 5.625em)) {
+        body {
+          background: rgb(255, 165, 0);
+        }
+      }
+    </style>
+  </head>
+  <body></body>
+</html>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-04.html b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-04.html
new file mode 100644
index 00000000000..5c3560aaf94
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-04.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <style>
+      body {
+        background: rgb(0, 0, 255);
+      }
+      @media (width: calc(10vw + 900vh)) {
+        body {
+          background: rgb(255, 165, 0);
+        }
+      }
+    </style>
+  </head>
+  <body></body>
+</html>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-05.html b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-05.html
new file mode 100644
index 00000000000..d1a71b73e4e
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-05.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <style>
+      body {
+        background: rgb(0, 0, 255);
+      }
+      @media (width: calc(900vh + 10px)) {
+        body {
+          background: rgb(255, 165, 0);
+        }
+      }
+    </style>
+  </head>
+  <body></body>
+</html>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-06.html b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-06.html
new file mode 100644
index 00000000000..787de9746b9
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-06.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <style>
+      body {
+        background: rgb(0, 0, 255);
+      }
+      @media (width: calc(90vw + 10px)) {
+        body {
+          background: rgb(255, 165, 0);
+        }
+      }
+    </style>
+  </head>
+  <body></body>
+</html>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-07.html b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-07.html
new file mode 100644
index 00000000000..bd4bd4aecf4
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-07.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <style>
+      body {
+        background: rgb(0, 0, 255);
+      }
+      @media (width: calc(100px / 1em * 1em)) {
+        body {
+          background: rgb(255, 165, 0);
+        }
+      }
+    </style>
+  </head>
+  <body></body>
+</html>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-08.html b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-08.html
new file mode 100644
index 00000000000..1ae1d0c30c6
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-08.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <style>
+      body {
+        background: rgb(0, 0, 255);
+      }
+      @media (width: calc((50vh * 5em) / 4px)) {
+        body {
+          background: rgb(255, 165, 0);
+        }
+      }
+    </style>
+  </head>
+  <body></body>
+</html>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-09.html b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-09.html
new file mode 100644
index 00000000000..ee078c95dfe
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-09.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <style>
+      body {
+        background: rgb(0, 0, 255);
+      }
+      @media (height: calc(50vw / 0.3125em * 10px)) {
+        body {
+          background: rgb(255, 165, 0);
+        }
+      }
+    </style>
+  </head>
+  <body></body>
+</html>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-10.html b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-10.html
new file mode 100644
index 00000000000..43a4fd02f4b
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-10.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <style>
+      body {
+        background: rgb(0, 0, 255);
+      }
+      @media (width: calc(10vw / 10px * 1000vh)) {
+        body {
+          background: rgb(255, 165, 0);
+        }
+      }
+    </style>
+  </head>
+  <body></body>
+</html>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-11.html b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-11.html
new file mode 100644
index 00000000000..1d63c899d84
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-11.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <style>
+      body {
+        background: rgb(0, 0, 255);
+      }
+      @media (width: calc(8000vh * 1vw / 1em * 8px / 40vh)) {
+        body {
+          background: rgb(255, 165, 0);
+        }
+      }
+    </style>
+  </head>
+  <body></body>
+</html>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-12.html b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-12.html
new file mode 100644
index 00000000000..bb623ff3ec5
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/css-values/support/mixed-units-12.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <style>
+      body {
+        background: rgb(0, 0, 255);
+      }
+      @media (width: calc(100vw * 10vh * 1px * 0.0625em / 1px / 1px / 1px)) {
+        body {
+          background: rgb(255, 165, 0);
+        }
+      }
+    </style>
+  </head>
+  <body></body>
+</html>