initial commit

server/node_modules/lru-memoizer/test/lru-memoizer.sync.events.test.js

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+const memoizer = require('./..');
+const sinon = require('sinon');
+
+describe('lru-memoizer sync (events)', function () {
+  let memoized;
+  let onMiss, onHit, onQueue;
+
+  beforeEach(function () {
+    loadTimes = 0;
+    onMiss = sinon.stub();
+    onHit = sinon.stub();
+    onQueue = sinon.stub();
+    memoized = memoizer.sync({
+      load: function (a, b, bypass) {
+        return a + b;
+      },
+      hash: function (a, b, bypass) {
+        return a + '-' + b;
+      },
+      bypass: function(a, b, bypass) {
+        return bypass;
+      },
+      max: 10
+    });
+    memoized.on('hit', onHit);
+    memoized.on('miss', onMiss);
+    memoized.on('queue', onQueue);
+  });
+
+  describe('when the result is not in the cache', () => {
+    beforeEach(() => {
+      memoized(1, 2, false);
+    });
+
+    it('should not call onHit', () => {
+      sinon.assert.notCalled(onHit);
+    });
+
+    it('should not call onQueue', () => {
+      sinon.assert.notCalled(onQueue);
+    });
+
+    it('should call onMiss with the load arguments', () => {
+      sinon.assert.calledOnce(onMiss);
+      sinon.assert.calledWith(onMiss, 1, 2, false);
+    });
+  });
+
+  describe('when the result is in the cache', () => {
+    beforeEach(() => {
+      memoized(1,2, false);
+      onHit.reset();
+      onMiss.reset();
+      onQueue.reset();
+      memoized(1, 2, false);
+    });
+
+    it('should call onHit with the load arguments', () => {
+      sinon.assert.calledOnce(onHit);
+      sinon.assert.calledWith(onHit, 1, 2, false);
+    });
+
+    it('should not call onQueue', () => {
+      sinon.assert.notCalled(onQueue);
+    });
+
+    it('should not call onMiss', () => {
+      sinon.assert.notCalled(onQueue);
+    });
+  });
+
+  describe('when the cache is by passed', () => {
+    beforeEach(() => {
+      memoized(1,2, false);
+      onHit.reset();
+      onMiss.reset();
+      onQueue.reset();
+      memoized(1, 2, true);
+    });
+
+    it('should not call onHit', () => {
+      sinon.assert.notCalled(onHit);
+    });
+
+    it('should not call onQueue', () => {
+      sinon.assert.notCalled(onQueue);
+    });
+
+    it('should call onMiss with the load arguments', () => {
+      sinon.assert.calledOnce(onMiss);
+      sinon.assert.calledWith(onMiss, 1, 2, true);
+    });
+  });
+});
+