Add telemetry for TRAP caching

node_modules/get-folder-size/test.js

@@ -0,0 +1,102 @@
+'use strict';
+
+const proxyquire = require('proxyquire');
+const path = require('path');
+require('should');
+
+let files = [
+  '/root',
+  '/root/folder',
+  '/root/folder/subfolder',
+  '/root/folder/subfolder/file4',
+  '/root/folder/file3',
+  '/root/file1',
+  '/root/file2'
+];
+
+const sizes = {
+  '/root/folder/subfolder/file4': 4,
+  '/root/folder/file3': 3,
+  '/root/file1': 1,
+  '/root/file2': 2
+};
+
+let inos = {};
+
+Object.keys(sizes).forEach(file => {
+  const file2 = file.replace(/\//g, path.sep);
+
+  sizes[file2] = sizes[file];
+});
+
+files = files.map(file => file.replace(/\//g, path.sep));
+
+let inoCounter = 0;
+
+const fs = {
+  lstat: (item, cb) => {
+    const stats = {
+      size: sizes[item],
+      isDirectory: () => {
+        return ((item === files[0]) || /folder$/.test(item));
+      },
+      ino: inos[item] || ++inoCounter
+    };
+
+    setImmediate(() => cb(null, stats));
+  },
+  readdir: (item, cb) => {
+    setImmediate(() => {
+      const list = files.filter(file => {
+        return ((file !== item) && (file.indexOf(item) !== -1));
+      }).map(file => {
+        return file.replace(item, '');
+      }).filter(it => {
+        return (it.lastIndexOf(path.sep) <= 0);
+      });
+
+      cb(null, list);
+    });
+  }
+};
+
+describe('getSize', () => {
+  let getSize;
+
+  before(() => {
+    getSize = proxyquire.load('./index', {
+      fs: fs
+    });
+  });
+
+  it('should get the size of the folder', (done) => {
+    getSize(files[0], (err, total) => {
+      total.should.eql(10);
+
+      done();
+    });
+  });
+
+  it('should ignore files', (done) => {
+    getSize(files[0], /(file1|file2)/, (err, total) => {
+      total.should.eql(7);
+
+      done();
+    });
+  });
+
+  it('should not count hardlinks twice', (done) => {
+    inos['/root/file1'] = 222;
+    inos['/root/file2'] = inos['/root/file1'];
+
+    getSize(files[0], (err, total) => {
+      total.should.eql(8);
+
+      delete inos['/root/file1'];
+      delete inos['/root/file2'];
+
+      done();
+    });
+
+  });
+});