GeometryInterface: Add DOMMatrixInit and fromMatrix().

third_party/WebKit/LayoutTests/fast/dom/geometry-interfaces-dom-matrix-readonly.html

Index: third_party/WebKit/LayoutTests/fast/dom/geometry-interfaces-dom-matrix-readonly.html
diff --git a/third_party/WebKit/LayoutTests/fast/dom/geometry-interfaces-dom-matrix-readonly.html b/third_party/WebKit/LayoutTests/fast/dom/geometry-interfaces-dom-matrix-readonly.html
index b6b3cb71b677610702b49966819255e64586eb6f..cf0dbc498601b4ffdfccd3ca2476ecd61ca005a9 100644
--- a/third_party/WebKit/LayoutTests/fast/dom/geometry-interfaces-dom-matrix-readonly.html
+++ b/third_party/WebKit/LayoutTests/fast/dom/geometry-interfaces-dom-matrix-readonly.html
@@ -59,6 +59,84 @@ test(function() {
     assert_throws(new TypeError(), function() { new DOMMatrixReadOnly([1, 2, 3]); },
             "DOMMatrixReadOnly constructor only accepts 1 number sequence with 6 or 16 elements.");
 }, "DOMMatrixReadOnly constructor - invalid arguments");
+
+test(function() {
+  var matrix = DOMMatrixReadOnly.fromMatrix();
+  assert_array_equals(matrix.toFloat64Array(), [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]);
+  assert_true(matrix.is2D);
+  assert_true(matrix.isIdentity);
+}, "DOMMatrixReadOnly.fromMatrix() with no parameter.");
+
+test(function() {
+  var matrix = DOMMatrixReadOnly.fromMatrix(null);
+  assert_array_equals(matrix.toFloat64Array(), [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]);
+  assert_true(matrix.is2D);
+  assert_true(matrix.isIdentity);
+}, "DOMMatrixReadOnly.fromMatrix() with null.");
+
+test(function() {
+  var matrix = DOMMatrixReadOnly.fromMatrix(undefined);
+  assert_array_equals(matrix.toFloat64Array(), [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]);
+  assert_true(matrix.is2D);
+  assert_true(matrix.isIdentity);
+}, "DOMMatrixReadOnly.fromMatrix() with undefined.");
+
+test(function() {
+  var matrix = DOMMatrixReadOnly.fromMatrix({});
+  assert_array_equals(matrix.toFloat64Array(), [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]);
+  assert_true(matrix.is2D);
+  assert_true(matrix.isIdentity);
+}, "DOMMatrixReadOnly.fromMatrix() with empty object.");
+
+test(function() {
+  var matrix = DOMMatrixReadOnly.fromMatrix({a: 1, b: 2, c: 3, d: 4, e: 5, f: 6});
+  assert_array_equals(matrix.toFloat64Array(), [1, 2, 0, 0, 3, 4, 0, 0, 0, 0, 1, 0, 5, 6, 0, 1]);
+  assert_true(matrix.is2D);
+  assert_false(matrix.isIdentity);
+}, "DOMMatrixReadOnly.fromMatrix({a: 1, b: 2, c: 3, d: 4, e: 5, f: 6}) should create a 2D DOMMatrixReadOnly.");
+
+test(function() {
+  var matrix = DOMMatrixReadOnly.fromMatrix({m11: 1, m22: 2, m33: 3, m44: 4, m23: 5, m43: 6});
+  assert_array_equals(matrix.toFloat64Array(), [1, 0, 0, 0, 0, 2, 5, 0, 0, 0, 3, 0, 0, 0, 6, 4]);
+  assert_false(matrix.is2D);
+  assert_false(matrix.isIdentity);
+}, "DOMMatrixReadOnly.fromMatrix({m11: 1, m22: 2, m33: 3, m44: 4, m23: 5, m43: 6}) should create a 2D DOMMatrixReadOnly.");
+
+test(function() {
+  var matrix = DOMMatrixReadOnly.fromMatrix({a: 1, m12: 2, m21: 3, d: 4, m41: 5, f: 6});
+  assert_equals(matrix.m11, 1);
+  assert_equals(matrix.b, 2);
+  assert_equals(matrix.c, 3);
+  assert_equals(matrix.m22, 4);
+  assert_equals(matrix.e, 5);
+  assert_equals(matrix.m42, 6);
+}, "[a, b, c, d, e, f] members should equals [m11, m12, m21, m22, m41, m42].");
+
+test(function() {
+  var matrix = DOMMatrixReadOnly.fromMatrix({a: 7, c: 9});
+  assert_equals(matrix.a, 7);
+  assert_equals(matrix.b, 0);
+  assert_equals(matrix.c, 9);
+  assert_equals(matrix.d, 1);
+  assert_equals(matrix.e, 0);
+  assert_equals(matrix.f, 0);
+  assert_equals(matrix.m11, 7);
+  assert_equals(matrix.m12, 0);
+  assert_equals(matrix.m21, 9);
+  assert_equals(matrix.m22, 1);
+  assert_equals(matrix.m41, 0);
+  assert_equals(matrix.m42, 0);
+}, "If 2d related members don't be set, should set to fallback.");
+
+test(function() {
+  assert_throws(new TypeError(), function() {

[dominicc (has gone to gerrit), 2016/08/30 02:13:42]

Consider using arrow functions. They're slightly more succinct and readable.

http://es6-features.org/#StatementBodies

[zino, 2016/09/10 10:18:15]

Done.

+        var matrix = DOMMatrixReadOnly.fromMatrix({a: 1, b: 2, m33: 3, m44: 4, is2D: true});

[dominicc (has gone to gerrit), 2016/08/30 02:13:43]

Why do you need this variable?

[zino, 2016/09/10 10:18:15]

Done.

+      }, "The is2D member is set to true but the input matrix is 3d matrix.");
+  assert_throws(new TypeError(), function() {
+        var matrix = DOMMatrixReadOnly.fromMatrix({a: 1, b: 2, m11: 3});
+      }, "The a member should equal the m11 member.");
+}, "DOMMatrixReadOnly.fromMatrix(): Exception tests.");
+
 </script>
 </body>
 </html>