Issue #258 : Move resize method to utils + add unit test

test/js/service/pensize/PenSizeServiceTest.js

@@ -0,0 +1,73 @@
+describe("PenSize test suite", function() {
+  var penSizeService;
+  var userSettingsBackup;
+  var userSettingsPenSize;
+
+  beforeEach(function() {
+    userSettingsBackup = pskl.UserSettings;
+
+    pskl.UserSettings = {
+      PEN_SIZE : 'PEN_SIZE_TEST_KEY',
+      get : function () {
+        return userSettingsPenSize;
+      },
+
+      set : function (size) {
+        userSettingsPenSize = size;
+      }
+    };
+
+    spyOn(pskl.UserSettings, 'get').and.callThrough();
+    spyOn(pskl.UserSettings, 'set').and.callThrough();
+    spyOn($, 'publish').and.callThrough();
+
+
+    penSizeService = new pskl.service.pensize.PenSizeService();
+  });
+
+  afterEach(function () {
+    pskl.UserSettings = userSettingsBackup;
+  });
+
+  it("gets initial value from user settings", function() {
+    console.log('[PenSizeService] gets initial value from user settings');
+    userSettingsPenSize = 2;
+
+    penSizeService.init();
+    expect(penSizeService.getPenSize()).toBe(2);
+    expect(pskl.UserSettings.get).toHaveBeenCalledWith('PEN_SIZE_TEST_KEY');
+  });
+
+  it("saves valid value to user settings", function() {
+    console.log('[PenSizeService] saves valid value to user settings');
+    userSettingsPenSize = 1;
+
+    penSizeService.init();
+    penSizeService.setPenSize(3);
+    expect(penSizeService.getPenSize()).toBe(3);
+
+    expect(pskl.UserSettings.set).toHaveBeenCalledWith('PEN_SIZE_TEST_KEY', 3);
+    expect($.publish).toHaveBeenCalledWith(Events.PEN_SIZE_CHANGED);
+  });
+
+  it("skips invalid value (outside of [1, 4])", function() {
+    console.log('[PenSizeService] skips invalid value (outside of [1, 4])');
+    userSettingsPenSize = 1;
+
+    penSizeService.init();
+    // MAX_VALUE is 4
+    penSizeService.setPenSize(5);
+    expect(penSizeService.getPenSize()).toBe(1);
+    // MIN_VALUE is 1
+    penSizeService.setPenSize(0);
+    expect(penSizeService.getPenSize()).toBe(1);
+    // value should be a number
+    penSizeService.setPenSize("test");
+    expect(penSizeService.getPenSize()).toBe(1);
+
+    // nothing set in usersettings
+    expect(pskl.UserSettings.set.calls.any()).toBe(false);
+    // no event fired
+    expect($.publish.calls.any()).toBe(false);
+  });
+});