Release

client/islets/core/y-debounce/y-debounce.test.js

@@ -0,0 +1,59 @@
+modules.define('test', ['y-debounce'], function (provide, debounce) {
+
+    describe('debounce', function () {
+        it('should debounce given function', function (done) {
+            var counter = 0;
+            var incr = function () {
+                counter++;
+            };
+            var debouncedIncr = debounce(incr, 32);
+            debouncedIncr();
+            debouncedIncr();
+            setTimeout(debouncedIncr, 16);
+            setTimeout(function () {
+                counter.should.eq(1, 'incr was debounced');
+                done();
+            }, 96);
+        });
+
+        it('should call given function immediately if "immediate" param is true', function (done) {
+            var a;
+            var b;
+            var counter = 0;
+            var incr = function () {
+                return ++counter;
+            };
+            var debouncedIncr = debounce(incr, 64, true);
+            a = debouncedIncr();
+            b = debouncedIncr();
+            a.should.eq(1);
+            b.should.eq(1);
+            counter.should.eq(1, 'incr was called immediately');
+            setTimeout(debouncedIncr, 16);
+            setTimeout(debouncedIncr, 32);
+            setTimeout(debouncedIncr, 48);
+            setTimeout(function () {
+                counter.should.eq(1, 'incr was debounced');
+                done();
+            }, 128);
+        });
+
+        it('should work properly when debounced function called recursively', function (done) {
+            var counter = 0;
+            var debouncedIncr = debounce(function () {
+                counter++;
+                if (counter < 10) {
+                    debouncedIncr();
+                }
+            }, 32, true);
+            debouncedIncr();
+            counter.should.eq(1, 'incr was called immediately');
+            setTimeout(function () {
+                counter.should.eq(1, 'incr was debounced');
+                done();
+            }, 96);
+        });
+    });
+
+    provide();
+});