Increase coverage by adding tests for eval, drop database, db stats, …

…create and drop users

test/test-db-stats.js

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+var insert = require('./insert')
+
+insert('db stats', [{
+  name: 'Squirtle', type: 'water'
+}, {
+  name: 'Starmie', type: 'water'
+}, {
+  name: 'Charmander', type: 'fire'
+}, {
+  name: 'Lapras', type: 'water'
+}], function (db, t) {
+  db.stats(function (err, stats) {
+    t.error(err, 'Should get stats without an error')
+    t.ok(stats.ok, 'OK flag should be set in result')
+    t.ok(stats.collections)
+    t.ok(stats.indexes)
+
+    t.end()
+  })
+})

test/test-drop-database.js

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+var test = require('./tape')
+var mongojs = require('../index')
+var db = mongojs('test', ['a'])
+
+test('dropDatabase', function (t) {
+  db.dropDatabase(function (err) {
+    t.error(err, 'Should drop a connected database without an error')
+
+    db.close(function (err) {
+      t.error(err, 'Should close a connection to a dropped database')
+      t.end()
+    })
+  })
+})

test/test-eval.js

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+var test = require('./tape')
+var mongojs = require('../index')
+var db = mongojs('test', ['a'])
+
+test('eval', function (t) {
+  var sum = function (x, y) {
+    return x + y
+  }
+
+  var failing = function () {
+    throw new Error('Does not work')
+  }
+
+  db.eval(sum, 1, 2, function (err, res) {
+    t.error(err, 'Should eval a function without an error')
+    t.equal(res, 3, 'Should eval sum function')
+
+    db.eval(failing, function (err) {
+      t.ok(err, 'Should error when eval a function with missing operand is called')
+      t.end()
+    })
+  })
+})

test/test-user-create.js

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+var test = require('./tape')
+var mongojs = require('../index')
+var db = mongojs('test', ['a'])
+
+test('create user', function (t) {
+  // Ignore errors when dropping the user
+  db.dropUser('mongojs', function () {
+    db.createUser({
+      user: 'mongojs',
+      pwd: 'topsecret',
+      customData: { department: 'area51' },
+      roles: ['readWrite']
+    }, function (err, res) {
+      t.error(err, 'Should create a user without an error')
+      t.ok(res.ok)
+
+      db.createUser({
+        user: 'mongojs',
+        pwd: 'topsecret',
+        customData: { department: 'area51' },
+        roles: ['readWrite']
+      }, function (err) {
+        t.ok(err, 'Should yield an error when creating a duplicate user')
+        t.equal(err.code, 11000, 'Should yield a duplicate user error')
+
+        t.end()
+      })
+    })
+  })
+})

test/test-user-drop.js

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+var test = require('./tape')
+var mongojs = require('../index')
+var db = mongojs('test', ['a'])
+
+test('drop user', function (t) {
+  // Ignore errors when dropping the user
+  db.dropUser('mongojs', function () {
+    db.createUser({
+      user: 'mongojs',
+      pwd: 'topsecret',
+      customData: { department: 'area51' },
+      roles: ['readWrite']
+    }, function (err, res) {
+      t.error(err, 'Should create a user without an error')
+      t.ok(res.ok)
+
+      db.dropUser('mongojs', function (err, res) {
+        t.error(err, 'Should drop an existing user without an error')
+        t.ok(res.ok)
+
+        t.end()
+      })
+    })
+  })
+})