Add test case

examples/scale-manager/resolution.bat

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+set main=./examples/scale-manager/resolution.js
+cd ..
+cd ..
+npm run watch

examples/scale-manager/resolution.js

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+import phaser from 'phaser/src/phaser.js';
+
+class Demo extends Phaser.Scene {
+    constructor() {
+        super({
+            key: 'examples'
+        })
+    }
+
+    preload() {
+    }
+
+    create() {
+        var print = this.add.text(0, 0, '');
+
+        var displaySize = this.scale.displaySize;
+        var baseSize = this.scale.baseSize;
+        var resolution = Math.max(displaySize.width / baseSize.width, 1);
+        print.text = resolution
+
+        var txt0 = this.add.text(130, 150, 'Hello xy world');
+        var txt1 = this.add.text(130, 170, 'Hello xy world').setResolution(resolution);
+
+        this.scale.on('resize', function (gameSize, baseSize, displaySize, previousWidth, previousHeight) {
+            var resolution = Math.max(displaySize.width / baseSize.width, 1);
+            txt1.setResolution(resolution);
+            print.text = resolution
+        }, this);
+    }
+
+    update() { }
+}
+
+var config = {
+    type: Phaser.AUTO,
+    parent: 'phaser-example',
+    width: 400,
+    height: 300,
+    scale: {
+        mode: Phaser.Scale.FIT,
+        autoCenter: Phaser.Scale.CENTER_BOTH,
+    },
+    scene: Demo
+};
+
+var game = new Phaser.Game(config);