tests update

test/js/service/HistoryServiceTest.js

@@ -1,22 +1,86 @@
-describe("History Service suite", function() {
-  it("starts at -1", function() {
-    var mockPiskelController = {};
-    var mockShortcutService = {};
-    var historyService = new pskl.service.HistoryService(mockPiskelController, mockShortcutService);
-    expect(historyService.currentIndex).toBe(-1);
-  });
+var callFactory = function (method) {
+  return {
+    times : function (times) {
+      var results = [];
+      for (var i = 0 ; i < times ; i++) {
+        results.push(method());
+      }
+      return results;
+    },
+    once : function () {
+      return method();
+    }
+  };
+};
 
-  it("is at 0 after init", function() {
+describe("History Service suite", function() {
+  var SERIALIZED_PISKEL = 'serialized-piskel';
+  var historyService = null;
+
+  var getLastState = function () {
+    return historyService.stateQueue[historyService.currentIndex];
+  };
+
+  var createMockHistoryService = function () {
     var mockPiskelController = {
       serialize : function () {
-        return 'serialized-piskel';
+        return SERIALIZED_PISKEL;
       }
     };
     var mockShortcutService = {
       addShortcut : function () {}
     };
-    var historyService = new pskl.service.HistoryService(mockPiskelController, mockShortcutService);
+    return new pskl.service.HistoryService(mockPiskelController, mockShortcutService);
+  };
+
+  it("starts at -1", function() {
+    historyService = createMockHistoryService();
+    expect(historyService.currentIndex).toBe(-1);
+  });
+
+  it("is at 0 after init", function() {
+    historyService = createMockHistoryService();
     historyService.init();
     expect(historyService.currentIndex).toBe(0);
   });
+
+  var sendSaveEvents = function (type) {
+    return callFactory (function () {
+      $.publish(Events.PISKEL_SAVE_STATE, {
+        type : type,
+        scope : {},
+        replay : {}
+      });
+    });
+  };
+
+  it("stores a piskel snapshot after 5 SAVE", function () {
+    // BEFORE
+    var SNAPSHOT_PERIOD_BACKUP = pskl.service.HistoryService.SNAPSHOT_PERIOD;
+    pskl.service.HistoryService.SNAPSHOT_PERIOD = 5;
+
+    historyService = createMockHistoryService();
+    historyService.init();
+
+    sendSaveEvents(pskl.service.HistoryService.REPLAY).times(5);
+
+    expect(historyService.currentIndex).toBe(5);
+
+    expect(getLastState().piskel).toBe(SERIALIZED_PISKEL);
+
+    sendSaveEvents(pskl.service.HistoryService.REPLAY).times(4);
+
+    sendSaveEvents(pskl.service.HistoryService.REPLAY_NO_SNAPSHOT).once();
+    expect(getLastState().piskel).toBeUndefined();
+
+    sendSaveEvents(pskl.service.HistoryService.REPLAY_NO_SNAPSHOT).once();
+    expect(getLastState().piskel).toBeUndefined();
+
+    sendSaveEvents(pskl.service.HistoryService.REPLAY).once();
+    expect(getLastState().piskel).toBe(SERIALIZED_PISKEL);
+
+    // AFTER
+    pskl.service.HistoryService.SNAPSHOT_PERIOD = SNAPSHOT_PERIOD_BACKUP;
+
+  })
 });