DOMMatrix-invert-non-invertible.html (1653B)
1 <!DOCTYPE html> 2 <link rel="help" href="https://drafts.fxtf.org/geometry-1/#DOMMatrix"> 3 <script src="/resources/testharness.js"></script> 4 <script src="/resources/testharnessreport.js"></script> 5 <p>Test DOMMatrix.inverse()/invertSelf() for non-invertible matrix</p> 6 <script> 7 function checkResult(m) { 8 assert_false(m.is2D, 'is2D'); 9 assert_false(m.isIdentity, 'isIdentity'); 10 assert_true(isNaN(m.m11), 'm11 isNaN'); 11 assert_true(isNaN(m.m12), 'm12 isNaN'); 12 assert_true(isNaN(m.m13), 'm13 isNaN'); 13 assert_true(isNaN(m.m14), 'm14 isNaN'); 14 assert_true(isNaN(m.m21), 'm21 isNaN'); 15 assert_true(isNaN(m.m22), 'm22 isNaN'); 16 assert_true(isNaN(m.m23), 'm23 isNaN'); 17 assert_true(isNaN(m.m24), 'm24 isNaN'); 18 assert_true(isNaN(m.m31), 'm31 isNaN'); 19 assert_true(isNaN(m.m32), 'm32 isNaN'); 20 assert_true(isNaN(m.m33), 'm33 isNaN'); 21 assert_true(isNaN(m.m34), 'm34 isNaN'); 22 assert_true(isNaN(m.m41), 'm41 isNaN'); 23 assert_true(isNaN(m.m42), 'm42 isNaN'); 24 assert_true(isNaN(m.m43), 'm43 isNaN'); 25 assert_true(isNaN(m.m44), 'm44 isNaN'); 26 27 var f32 = m.toFloat32Array(); 28 assert_equals(f32.length, 16, 'toFloat32Array().length'); 29 for (var i = 0; i < 16; i++) 30 assert_true(isNaN(f32[i]), 'toFloat32Array()[' + i + '] isNaN'); 31 32 var f64 = m.toFloat64Array(); 33 assert_equals(f64.length, 16, 'toFloat64Array().length'); 34 for (var i = 0; i < 16; i++) 35 assert_true(isNaN(f64[i]), 'toFloat64()[' + i + '] isNaN'); 36 } 37 38 test(function() { 39 var m = new DOMMatrix(); 40 m.a = 0; 41 m.invertSelf(); 42 checkResult(m); 43 },"invertSelf()"); 44 45 test(function() { 46 var m = new DOMMatrix(); 47 m.a = 0; 48 checkResult(m.inverse()); 49 },"inverse()"); 50 </script>