X-Git-Url: https://scripts.mit.edu/gitweb/autoinstallsdev/mediawiki.git/blobdiff_plain/19e297c21b10b1b8a3acad5e73fc71dcb35db44a..6932310fd58ebef145fa01eb76edf7150284d8ea:/tests/qunit/suites/resources/jquery/jquery.hidpi.test.js

diff --git a/tests/qunit/suites/resources/jquery/jquery.hidpi.test.js b/tests/qunit/suites/resources/jquery/jquery.hidpi.test.js
new file mode 100644
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+++ b/tests/qunit/suites/resources/jquery/jquery.hidpi.test.js
@@ -0,0 +1,38 @@
+( function ( $ ) {
+	QUnit.module( 'jquery.hidpi', QUnit.newMwEnvironment() );
+
+	QUnit.test( 'devicePixelRatio', function ( assert ) {
+		var devicePixelRatio = $.devicePixelRatio();
+		assert.equal( typeof devicePixelRatio, 'number', '$.devicePixelRatio() returns a number' );
+	} );
+
+	QUnit.test( 'bracketedDevicePixelRatio', function ( assert ) {
+		var ratio = $.bracketedDevicePixelRatio();
+		assert.equal( typeof ratio, 'number', '$.bracketedDevicePixelRatio() returns a number' );
+	} );
+
+	QUnit.test( 'bracketDevicePixelRatio', function ( assert ) {
+		assert.equal( $.bracketDevicePixelRatio( 0.75 ), 1, '0.75 gives 1' );
+		assert.equal( $.bracketDevicePixelRatio( 1 ), 1, '1 gives 1' );
+		assert.equal( $.bracketDevicePixelRatio( 1.25 ), 1.5, '1.25 gives 1.5' );
+		assert.equal( $.bracketDevicePixelRatio( 1.5 ), 1.5, '1.5 gives 1.5' );
+		assert.equal( $.bracketDevicePixelRatio( 1.75 ), 2, '1.75 gives 2' );
+		assert.equal( $.bracketDevicePixelRatio( 2 ), 2, '2 gives 2' );
+		assert.equal( $.bracketDevicePixelRatio( 2.5 ), 2, '2.5 gives 2' );
+		assert.equal( $.bracketDevicePixelRatio( 3 ), 2, '3 gives 2' );
+	} );
+
+	QUnit.test( 'matchSrcSet', function ( assert ) {
+		var srcset = 'onefive.png 1.5x, two.png 2x';
+
+		// Nice exact matches
+		assert.equal( $.matchSrcSet( 1, srcset ), null, '1.0 gives no match' );
+		assert.equal( $.matchSrcSet( 1.5, srcset ), 'onefive.png', '1.5 gives match' );
+		assert.equal( $.matchSrcSet( 2, srcset ), 'two.png', '2 gives match' );
+
+		// Non-exact matches; should return the next-biggest specified
+		assert.equal( $.matchSrcSet( 1.25, srcset ), null, '1.25 gives no match' );
+		assert.equal( $.matchSrcSet( 1.75, srcset ), 'onefive.png', '1.75 gives match to 1.5' );
+		assert.equal( $.matchSrcSet( 2.25, srcset ), 'two.png', '2.25 gives match to 2' );
+	} );
+}( jQuery ) );