Tests: Make some number comparisons less strict

Some of the APIs return fractional values in newer jQueries, making comparisons sometimes not being 100% accurate. Allow some delta. This is similar to what was already done in 98b5391 but a few cases affecting IE and/or Edge Legacy were missed. Closes gh-1947

Author: mgol

tests/unit/draggable/options.js

@@ -1469,7 +1469,7 @@ QUnit.test( "zIndex, default, switching after initialization", function( assert
 } );
 
 QUnit.test( "iframeFix", function( assert ) {
-assert.expect( 5 );
+assert.expect( 6 );
 
 var element = $( "<div>" ).appendTo( "#qunit-fixture" ).draggable( { iframeFix: true } ),
 element2 = $( "<div>" ).appendTo( "#qunit-fixture" ).draggable( { iframeFix: ".iframe" } ),
@@ -1485,14 +1485,22 @@ QUnit.test( "iframeFix", function( assert ) {
 } );
 
 element.one( "drag", function() {
-var div = $( this ).children().not( "iframe" );
+var divOffset, iframeOffset,
+div = $( this ).children().not( "iframe" );
 
 // http://bugs.jqueryui.com/ticket/9671
 // iframeFix doesn't handle iframes that move
 assert.equal( div.length, 1, "blocking div added as sibling" );
 assert.equal( div.outerWidth(), iframe.outerWidth(), "blocking div is wide enough" );
 assert.equal( div.outerHeight(), iframe.outerHeight(), "blocking div is tall enough" );
-assert.deepEqual( div.offset(), iframe.offset(), "blocking div is tall enough" );
+
+divOffset = div.offset();
+iframeOffset = iframe.offset();
+
+// Support: Edge <79 only
+// In Edge Legacy these values differ a little.
+assert.ok( Math.abs( divOffset.top - iframeOffset.top ) < 0.25, "Check top within 0.25 of expected" );
+assert.ok( Math.abs( divOffset.left - iframeOffset.left ) < 0.25, "Check left within 0.25 of expected" );
 } );
 
 element.simulate( "drag", {

tests/unit/sortable/options.js

@@ -286,14 +286,24 @@ QUnit.test( "{ forcePlaceholderSize: true } table rows", function( assert ) {
 assert.expect( 2 );
 
 // Table should have the placeholder's height set the same as the row we're dragging
-var element = $( "#sortable-table2 tbody" );
+var element = $( "#sortable-table2 tbody" ),
+jqMinor = $.fn.jquery.substring( 0, 4 );
 
 element.sortable( {
 placeholder: "test",
 forcePlaceholderSize: true,
 start: function( event, ui ) {
-assert.equal( ui.placeholder.height(), ui.item.height(),
-"placeholder is same height as item" );
+
+// Support: IE 11+, Edge <79 only
+// In IE & Edge Legacy these values may differ a little
+// when jQuery >=3.0 <3.2 is used.
+if ( jqMinor === "3.0." || jqMinor === "3.1." ) {
+assert.ok( Math.abs( ui.placeholder.height() - ui.item.height() ) < 0.25,
+"placeholder height is within 0.25 px of item's" );
+} else {
+assert.equal( ui.placeholder.height(), ui.item.height(),
+"placeholder is same height as item" );
+}
 }
 } );