Merge pull request #75 from kafeikui/add-get-next-initialized-tick-test

add `getNextInitializedTick` test in TickManager

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@bella-defintech/uniswap-v3-simulator",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "description": "the 'Tuner', a Uniswap V3 Simulator",
   "keywords": [
     "uniswap",

test/TestSubgraph.test.ts

@@ -6,7 +6,7 @@ chai.use(chaiAsPromised);
 describe("Test Uniswap v3 Subgraph", function () {
   const APIURL = "https://api.thegraph.com/subgraphs/name/uniswap/uniswap-v3";
 
-  it.only("can download events", async function () {
+  it("can download events", async function () {
     const query = gql`
       query {
         pool(id: "0x8ad599c3a0ff1de082011efddc58f1908eb6e6d8") {

test/TickManager.test.ts

@@ -0,0 +1,104 @@
+import { Tick } from "../src/model/Tick";
+import { TickMath } from "../src/util/TickMath";
+import { expect } from "./shared/expect";
+import { TickManager } from "../src/manager/TickManager";
+
+describe("TickManager", () => {
+  describe("#getNextInitializedTick", () => {
+    let highTick: Tick;
+    let lowTick: Tick;
+    let midTick: Tick;
+    let ticks: Tick[];
+    let tickManager: TickManager = new TickManager();
+
+    beforeEach(() => {
+      lowTick = new Tick(TickMath.MIN_TICK + 1);
+      midTick = new Tick(0);
+      highTick = new Tick(TickMath.MAX_TICK - 1);
+
+      ticks = [lowTick, midTick, highTick];
+
+      for (let tick of ticks) {
+        tickManager.set(tick);
+      }
+    });
+
+    it("lte = true", () => {
+      expect(tickManager.getNextInitializedTick(-257, 1, true)).to.eql({
+        nextTick: -512,
+        initialized: false,
+      });
+      expect(tickManager.getNextInitializedTick(-256, 1, true)).to.eql({
+        nextTick: -256,
+        initialized: false,
+      });
+      expect(tickManager.getNextInitializedTick(-1, 1, true)).to.eql({
+        nextTick: -256,
+        initialized: false,
+      });
+      expect(tickManager.getNextInitializedTick(0, 1, true)).to.eql({
+        nextTick: 0,
+        initialized: true,
+      });
+      expect(tickManager.getNextInitializedTick(1, 1, true)).to.eql({
+        nextTick: 0,
+        initialized: true,
+      });
+      expect(tickManager.getNextInitializedTick(255, 1, true)).to.eql({
+        nextTick: 0,
+        initialized: true,
+      });
+      expect(tickManager.getNextInitializedTick(256, 1, true)).to.eql({
+        nextTick: 256,
+        initialized: false,
+      });
+      expect(tickManager.getNextInitializedTick(257, 1, true)).to.eql({
+        nextTick: 256,
+        initialized: false,
+      });
+    });
+
+    it("lte = false", () => {
+      expect(tickManager.getNextInitializedTick(-215041, 60, false)).to.eql({
+        nextTick: -199740,
+        initialized: false,
+      });
+      expect(tickManager.getNextInitializedTick(-257, 1, false)).to.eql({
+        nextTick: -1,
+        initialized: false,
+      });
+      expect(tickManager.getNextInitializedTick(-256, 1, false)).to.eql({
+        nextTick: -1,
+        initialized: false,
+      });
+      expect(tickManager.getNextInitializedTick(-2, 1, false)).to.eql({
+        nextTick: -1,
+        initialized: false,
+      });
+      expect(tickManager.getNextInitializedTick(-1, 1, false)).to.eql({
+        nextTick: 0,
+        initialized: true,
+      });
+      expect(tickManager.getNextInitializedTick(0, 1, false)).to.eql({
+        nextTick: 255,
+        initialized: false,
+      });
+      expect(tickManager.getNextInitializedTick(1, 1, false)).to.eql({
+        nextTick: 255,
+        initialized: false,
+      });
+      expect(tickManager.getNextInitializedTick(254, 1, false)).to.eql({
+        nextTick: 255,
+        initialized: false,
+      });
+      expect(tickManager.getNextInitializedTick(255, 1, false)).to.eql({
+        nextTick: 511,
+        initialized: false,
+      });
+      expect(tickManager.getNextInitializedTick(256, 1, false)).to.eql({
+        nextTick: 511,
+        initialized: false,
+      });
+    });
+  });
+});