1 files changed, 38 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/geometry/DOMMatrix-css-string.worker.js b/testing/web-platform/tests/css/geometry/DOMMatrix-css-string.worker.js
new file mode 100644
index 0000000000..d11638b26a
--- /dev/null
+++ b/testing/web-platform/tests/css/geometry/DOMMatrix-css-string.worker.js
@@ -0,0 +1,38 @@
+// https://drafts.fxtf.org/geometry/#DOMMatrix
+
+importScripts("/resources/testharness.js");
+
+['DOMMatrix', 'DOMMatrixReadOnly'].forEach(constr => {
+  test(() => {
+    assert_true(constr in self, `${constr} should exist`);
+    assert_throws_js(TypeError, () => new self[constr]('matrix(1,0,0,1,0,0)') );
+  }, `${constr} constructor with string argument in worker`);
+
+  test(() => {
+    assert_true(constr in self, `${constr} should exist`);
+    assert_throws_js(TypeError, () => new self[constr]('') );
+  }, `${constr} constructor with empty string argument in worker`);
+
+  test(() => {
+    const matrix = new self[constr]();
+    assert_equals(String(matrix), `[object ${constr}]`);
+  }, `${constr} stringifier in worker (2d identity)`);
+
+  test(() => {
+    const matrix = self[constr].fromMatrix({is2D: false});
+    assert_equals(String(matrix), `[object ${constr}]`);
+  }, `${constr} stringifier in worker (3d identity)`);
+
+  test(() => {
+    const matrix = new self[constr]([1, 0, 0, NaN, Infinity, -Infinity]);
+    assert_equals(String(matrix), `[object ${constr}]`);
+  }, `${constr} stringifier in worker (non-finite values)`);
+});
+
+test(() => {
+  assert_false('setMatrixValue' in DOMMatrix.prototype, 'on prototype');
+  const matrix = new DOMMatrix();
+  assert_false('setMatrixValue' in matrix, 'on instance');
+}, 'DOMMatrix setMatrixValue in worker');
+
+done();