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node_modules/lru-memoizer/test/lru-memoizer.nokey.test.js

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+var memoizer = require('./..');
+var assert = require('chai').assert;
+
+describe('lru-memoizer (no key)', function () {
+  var loadTimes = 0, memoized;
+
+  beforeEach(function () {
+    loadTimes = 0;
+
+    memoized = memoizer({
+      load: function (callback) {
+        loadTimes++;
+        return setTimeout(function () {
+          callback(null, loadTimes);
+        }, 10);
+      }
+    });
+  });
+
+  it('should cache the result of an async function', function (done) {
+    memoized(function (err, result) {
+      assert.isNull(err);
+      assert.equal(result, 1);
+      assert.equal(loadTimes, 1);
+      memoized(function (err, result) {
+        assert.isNull(err);
+        assert.equal(result, 1);
+        assert.equal(loadTimes, 1);
+        done();
+      });
+    });
+
+  });
+
+  it('should use the hash function for keys', function (done) {
+    memoized(function () {
+      memoized(function () {
+        assert.includeMembers(memoized.keys(), ['_']);
+        done();
+      });
+    });
+  });
+});