diff --git a/testing/web-platform/tests/css/css-box/parsing/margin-computed.html b/testing/web-platform/tests/css/css-box/parsing/margin-computed.html
new file mode 100644
index 000000000000..f22f6cdc0f50
--- /dev/null
+++ b/testing/web-platform/tests/css/css-box/parsing/margin-computed.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS basic box model: getComputedStyle().margin</title>
+<link rel="help" href="https://drafts.csswg.org/css-box-3/#propdef-margin">
+<meta name="assert" content="margin computed value has absolute lengths.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<style>
+  #parent {
+    width: 200px;
+  }
+  #target {
+    width: 0px;
+    font-size: 40px;
+  }
+</style>
+</head>
+<body>
+<div id="parent">
+  <div id="target"></div>
+</div>
+<script>
+test_computed_value("margin", "10px");
+test_computed_value("margin", "10px 20px 30px 40px");
+test_computed_value("margin", "calc(0.5em + 10px)", "30px");
+test_computed_value("margin", "30%", "60px");
+
+test_computed_value("margin-top", "10px");
+test_computed_value("margin-right", "20px");
+test_computed_value("margin-bottom", "30px");
+test_computed_value("margin-left", "40px");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-logical/parsing/block-size-computed.html b/testing/web-platform/tests/css/css-logical/parsing/block-size-computed.html
new file mode 100644
index 000000000000..de3a3c2a0c5c
--- /dev/null
+++ b/testing/web-platform/tests/css/css-logical/parsing/block-size-computed.html
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Logical Properties and Values: getComputedStyle().blockSize</title>
+<link rel="help" href="https://drafts.csswg.org/css-logical-1/#dimension-properties">
+<meta name="assert" content="block-size computed value is an absolute length.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<style>
+  #parent {
+    height: 300px;
+  }
+  #target {
+    width: 0px;
+    height: 0px;
+    font-size: 40px;
+  }
+  #child {
+    height: 80px;
+  }
+</style>
+</head>
+<body>
+<div id="parent">
+  <div id="target">
+    <div id="child">
+    </div>
+  </div>
+</div>
+<script>
+test_computed_value("block-size", "auto", "80px"); // child height
+
+test_computed_value("block-size", "10px");
+test_computed_value("block-size", "20%", "60px");
+test_computed_value("block-size", "calc(0.5em + 10px)", "30px");
+test_computed_value("block-size", "calc(-0.5em + 10px)", "0px");
+
+test_computed_value("block-size", "min-content", "80px"); // child height
+test_computed_value("block-size", "max-content", "80px");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-logical/parsing/inline-size-computed.html b/testing/web-platform/tests/css/css-logical/parsing/inline-size-computed.html
new file mode 100644
index 000000000000..0f60165a347e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-logical/parsing/inline-size-computed.html
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Logical Properties and Values: getComputedStyle().inlineSize</title>
+<link rel="help" href="https://drafts.csswg.org/css-logical-1/#dimension-properties">
+<meta name="assert" content="inline-size computed value is an absolute length.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<style>
+  #parent {
+    width: 200px;
+  }
+  #target {
+    width: 0px;
+    height: 0px;
+    font-size: 40px;
+  }
+  #child {
+    width: 60px;
+  }
+</style>
+</head>
+<body>
+<div id="parent">
+  <div id="target">
+    <div id="child">
+    </div>
+  </div>
+</div>
+<script>
+test_computed_value("inline-size", "auto", "200px"); // parent width
+
+test_computed_value("inline-size", "10px");
+test_computed_value("inline-size", "20%", "40px");
+test_computed_value("inline-size", "calc(0.5em + 10px)", "30px");
+test_computed_value("inline-size", "calc(-0.5em + 10px)", "0px");
+
+test_computed_value("inline-size", "min-content", "60px"); // child width
+test_computed_value("inline-size", "max-content", "60px");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transforms/parsing/perspective-origin-computed.html b/testing/web-platform/tests/css/css-transforms/parsing/perspective-origin-computed.html
new file mode 100644
index 000000000000..effeb2974e13
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transforms/parsing/perspective-origin-computed.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transform Module Level 2: getComputedStyle().perspectiveOrigin</title>
+<link rel="help" href="https://drafts.csswg.org/css-transforms-2/#perspective-origin-property">
+<meta name="assert" content="perspective-origin computed value is a pair of absolute lengths">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<style>
+  #target {
+    width: 200px;
+    height: 300px;
+    font-size: 40px;
+  }
+</style>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("perspective-origin", "10%", "20px 150px");
+test_computed_value("perspective-origin", "10% center", "20px 150px");
+test_computed_value("perspective-origin", "20% 30px", "40px 30px");
+test_computed_value("perspective-origin", "30px center", "30px 150px");
+test_computed_value("perspective-origin", "40px top", "40px 0px");
+test_computed_value("perspective-origin", "bottom 10% right 20%", "160px 270px");
+test_computed_value("perspective-origin", "bottom right", "200px 300px");
+test_computed_value("perspective-origin", "center", "100px 150px");
+test_computed_value("perspective-origin", "center 50px", "100px 50px");
+test_computed_value("perspective-origin", "center bottom", "100px 300px");
+test_computed_value("perspective-origin", "center center", "100px 150px");
+test_computed_value("perspective-origin", "center left", "0px 150px");
+test_computed_value("perspective-origin", "left", "0px 150px");
+test_computed_value("perspective-origin", "left 10px", "0px 10px");
+test_computed_value("perspective-origin", "left bottom", "0px 300px");
+test_computed_value("perspective-origin", "left center", "0px 150px");
+test_computed_value("perspective-origin", "right 40%", "200px 120px");
+test_computed_value("perspective-origin", "right 30% top -60px", "140px -60px");
+test_computed_value("perspective-origin", "top", "100px 0px");
+test_computed_value("perspective-origin", "right 20px bottom 30px", "180px 270px");
+
+test_computed_value("perspective-origin", "right calc(10px - 0.5em) top calc(10px - 0.5em)", "210px -10px");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transforms/parsing/perspective-origin-parsing-invalid.html b/testing/web-platform/tests/css/css-transforms/parsing/perspective-origin-invalid.html
similarity index 100%
rename from testing/web-platform/tests/css/css-transforms/parsing/perspective-origin-parsing-invalid.html
rename to testing/web-platform/tests/css/css-transforms/parsing/perspective-origin-invalid.html
diff --git a/testing/web-platform/tests/css/css-transforms/parsing/perspective-origin-parsing-valid.html b/testing/web-platform/tests/css/css-transforms/parsing/perspective-origin-valid.html
similarity index 100%
rename from testing/web-platform/tests/css/css-transforms/parsing/perspective-origin-parsing-valid.html
rename to testing/web-platform/tests/css/css-transforms/parsing/perspective-origin-valid.html
diff --git a/testing/web-platform/tests/css/css-transforms/parsing/transform-origin-computed.html b/testing/web-platform/tests/css/css-transforms/parsing/transform-origin-computed.html
new file mode 100644
index 000000000000..696d89db67fc
--- /dev/null
+++ b/testing/web-platform/tests/css/css-transforms/parsing/transform-origin-computed.html
@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transform Module Level 2: getComputedStyle().transformOrigin</title>
+<link rel="help" href="https://drafts.csswg.org/css-transforms-2/#transform-origin-property">
+<meta name="assert" content="transform-origin computed value is two or three absolute lengths">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<style>
+  #target {
+    width: 200px;
+    height: 300px;
+    font-size: 40px;
+  }
+</style>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("transform-origin", "10%", "20px 150px");
+test_computed_value("transform-origin", "10% center", "20px 150px");
+test_computed_value("transform-origin", "20% 30px", "40px 30px");
+test_computed_value("transform-origin", "30px center", "30px 150px");
+test_computed_value("transform-origin", "40px top", "40px 0px");
+test_computed_value("transform-origin", "bottom right", "200px 300px");
+test_computed_value("transform-origin", "center", "100px 150px");
+test_computed_value("transform-origin", "center 50px", "100px 50px");
+test_computed_value("transform-origin", "center bottom", "100px 300px");
+test_computed_value("transform-origin", "center center", "100px 150px");
+test_computed_value("transform-origin", "center left", "0px 150px");
+test_computed_value("transform-origin", "left", "0px 150px");
+test_computed_value("transform-origin", "left 10px", "0px 10px");
+test_computed_value("transform-origin", "left bottom", "0px 300px");
+test_computed_value("transform-origin", "left center", "0px 150px");
+test_computed_value("transform-origin", "right 40%", "200px 120px");
+test_computed_value("transform-origin", "top", "100px 0px");
+
+test_computed_value("transform-origin", "-1px bottom 5px", "-1px 300px 5px");
+test_computed_value("transform-origin", "left center 6px", "0px 150px 6px");
+test_computed_value("transform-origin", "center top", "100px 0px");
+test_computed_value("transform-origin", "right bottom 7px", "200px 300px 7px");
+test_computed_value("transform-origin", "-1px -2px -3px");
+
+test_computed_value("transform-origin", "calc(-100% + 10px - 0.5em) calc(10px - 0.5em) calc(10px - 0.5em)", "-210px -10px -10px");
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/css/css-transforms/parsing/transform-origin-invalid.html b/testing/web-platform/tests/css/css-transforms/parsing/transform-origin-invalid.html
index 19a7c963a708..0dd1eeaf592b 100644
--- a/testing/web-platform/tests/css/css-transforms/parsing/transform-origin-invalid.html
+++ b/testing/web-platform/tests/css/css-transforms/parsing/transform-origin-invalid.html
@@ -19,6 +19,10 @@ test_invalid_value("transform-origin", "1px left");
 test_invalid_value("transform-origin", "top 1px"); // Blink fails.
 test_invalid_value("transform-origin", "right left");
 test_invalid_value("transform-origin", "top bottom");
+
+test_invalid_value("transform-origin", "bottom 10% right 20%");
+test_invalid_value("transform-origin", "right 30% top -60px");
+test_invalid_value("transform-origin", "right 20px bottom 30px");
 </script>
 </body>
 </html>
