[Plugins] Bring over timeline, clock plugins

WTD-1239

platform/features/timeline/test/capabilities/ResourceGraphSpec.js

@@ -0,0 +1,56 @@
+/*global define,describe,it,expect,beforeEach,waitsFor,jasmine,window,afterEach*/
+
+define(
+    ['../../src/capabilities/ResourceGraph'],
+    function (ResourceGraph) {
+        'use strict';
+
+        describe("A resource graph capability", function () {
+
+            // Placeholder; WTD-918 will implement
+            it("has zero points for zero utilization changes", function () {
+                var graph = new ResourceGraph([]);
+                expect(graph.getPointCount()).toEqual(0);
+            });
+
+            it("creates steps based on resource utilizations", function () {
+                var graph = new ResourceGraph([
+                    { start: 5, end: 100, value: 42 },
+                    { start: 50, end: 120, value: -22 },
+                    { start: 15, end: 40, value: 30 },
+                    { start: 150, end: 180, value: -10 }
+                ]);
+
+                expect(graph.getPointCount()).toEqual(16);
+
+                // Should get two values at every time stamp, for step-like appearance
+                [ 5, 15, 40, 50, 100, 120, 150, 180].forEach(function (v, i) {
+                    expect(graph.getDomainValue(i * 2)).toEqual(v);
+                    expect(graph.getDomainValue(i * 2 + 1)).toEqual(v);
+                });
+
+                // Should also repeat values at subsequent indexes, but offset differently,
+                // for horizontal spans between steps
+                [ 0, 42, 72, 42, 20, -22, 0, -10].forEach(function (v, i) {
+                    expect(graph.getRangeValue(i * 2)).toEqual(v);
+                    // Offset backwards; wrap around end of the series
+                    expect(graph.getRangeValue((16 + i * 2 - 1) % 16)).toEqual(v);
+                });
+            });
+
+            it("filters out zero-duration spikes", function () {
+                var graph = new ResourceGraph([
+                    { start: 5, end: 100, value: 42 },
+                    { start: 100, end: 120, value: -22 },
+                    { start: 100, end: 180, value: 30 },
+                    { start: 130, end: 180, value: -10 }
+                ]);
+
+                // There are only 5 unique timestamps there, so there should
+                // be 5 steps, for 10 total points
+                expect(graph.getPointCount()).toEqual(10);
+            });
+
+        });
+    }
+);