1 files changed, 144 insertions, 0 deletions
diff --git a/testing/web-platform/meta/css/css-fonts/font-stretch-interpolation-math-functions.html.ini b/testing/web-platform/meta/css/css-fonts/font-stretch-interpolation-math-functions.html.ini
new file mode 100644
index 0000000000..f1553f9085
--- /dev/null
+++ b/testing/web-platform/meta/css/css-fonts/font-stretch-interpolation-math-functions.html.ini
@@ -0,0 +1,144 @@
+[font-stretch-interpolation-math-functions.html]
+  [CSS Transitions: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (-1) should be [20%\]]
+    expected: FAIL
+
+  [CSS Transitions: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (0) should be [100%\]]
+    expected: FAIL
+
+  [CSS Transitions: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (0.125) should be [110%\]]
+    expected: FAIL
+
+  [CSS Transitions: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (0.875) should be [170%\]]
+    expected: FAIL
+
+  [CSS Transitions: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (1) should be [180%\]]
+    expected: FAIL
+
+  [CSS Transitions: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (2) should be [260%\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (-1) should be [20%\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (0) should be [100%\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (0.125) should be [110%\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (0.875) should be [170%\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (1) should be [180%\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (2) should be [260%\]]
+    expected: FAIL
+
+  [CSS Animations: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (-1) should be [20%\]]
+    expected: FAIL
+
+  [CSS Animations: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (0) should be [100%\]]
+    expected: FAIL
+
+  [CSS Animations: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (0.125) should be [110%\]]
+    expected: FAIL
+
+  [CSS Animations: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (0.875) should be [170%\]]
+    expected: FAIL
+
+  [CSS Animations: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (1) should be [180%\]]
+    expected: FAIL
+
+  [CSS Animations: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (2) should be [260%\]]
+    expected: FAIL
+
+  [Web Animations: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (-1) should be [20%\]]
+    expected: FAIL
+
+  [Web Animations: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (0) should be [100%\]]
+    expected: FAIL
+
+  [Web Animations: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (0.125) should be [110%\]]
+    expected: FAIL
+
+  [Web Animations: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (0.875) should be [170%\]]
+    expected: FAIL
+
+  [Web Animations: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (1) should be [180%\]]
+    expected: FAIL
+
+  [Web Animations: property <font-stretch> from [100%\] to [calc(sign(20rem - 20px) * 180%)\] at (2) should be [260%\]]
+    expected: FAIL
+
+  [CSS Transitions: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (-1) should be [20%\]]
+    expected: FAIL
+
+  [CSS Transitions: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (0) should be [100%\]]
+    expected: FAIL
+
+  [CSS Transitions: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (0.125) should be [110%\]]
+    expected: FAIL
+
+  [CSS Transitions: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (0.875) should be [170%\]]
+    expected: FAIL
+
+  [CSS Transitions: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (1) should be [180%\]]
+    expected: FAIL
+
+  [CSS Transitions: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (2) should be [260%\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (-1) should be [20%\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (0) should be [100%\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (0.125) should be [110%\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (0.875) should be [170%\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (1) should be [180%\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (2) should be [260%\]]
+    expected: FAIL
+
+  [CSS Animations: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (-1) should be [20%\]]
+    expected: FAIL
+
+  [CSS Animations: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (0) should be [100%\]]
+    expected: FAIL
+
+  [CSS Animations: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (0.125) should be [110%\]]
+    expected: FAIL
+
+  [CSS Animations: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (0.875) should be [170%\]]
+    expected: FAIL
+
+  [CSS Animations: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (1) should be [180%\]]
+    expected: FAIL
+
+  [CSS Animations: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (2) should be [260%\]]
+    expected: FAIL
+
+  [Web Animations: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (-1) should be [20%\]]
+    expected: FAIL
+
+  [Web Animations: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (0) should be [100%\]]
+    expected: FAIL
+
+  [Web Animations: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (0.125) should be [110%\]]
+    expected: FAIL
+
+  [Web Animations: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (0.875) should be [170%\]]
+    expected: FAIL
+
+  [Web Animations: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (1) should be [180%\]]
+    expected: FAIL
+
+  [Web Animations: property <font-stretch> from [calc(sign(20rem - 20px) * 100%)\] to [calc(sign(20rem - 20px) * 180%)\] at (2) should be [260%\]]
+    expected: FAIL