Increase test coverage

Author: wojtekmaj

.nyc_output/213d30ee-6170-447d-bb7b-c0f942cb2720.json

@@ -0,0 +1 @@
+{}

.nyc_output/3b5133f3-96f2-4223-942c-eebe80144959.json

@@ -0,0 +1 @@
+{"parent":"3b5133f3-96f2-4223-942c-eebe80144959","pid":29290,"argv":["/usr/local/bin/node","/Users/wojciech.maj/Projekty/Open source projects/multer/node_modules/.bin/mocha","--reporter","spec","--exit","--check-leaks","test/"],"execArgv":[],"cwd":"/Users/wojciech.maj/Projekty/Open source projects/multer","time":1754858307522,"ppid":29270,"coverageFilename":"/Users/wojciech.maj/Projekty/Open source projects/multer/.nyc_output/213d30ee-6170-447d-bb7b-c0f942cb2720.json","externalId":"","uuid":"213d30ee-6170-447d-bb7b-c0f942cb2720","files":["/Users/wojciech.maj/Projekty/Open source projects/multer/index.js","/Users/wojciech.maj/Projekty/Open source projects/multer/lib/make-middleware.js","/Users/wojciech.maj/Projekty/Open source projects/multer/lib/counter.js","/Users/wojciech.maj/Projekty/Open source projects/multer/lib/multer-error.js","/Users/wojciech.maj/Projekty/Open source projects/multer/lib/file-appender.js","/Users/wojciech.maj/Projekty/Open source projects/multer/lib/remove-uploaded-files.js","/Users/wojciech.maj/Projekty/Open source projects/multer/storage/disk.js","/Users/wojciech.maj/Projekty/Open source projects/multer/storage/memory.js"]}

.nyc_output/processinfo/213d30ee-6170-447d-bb7b-c0f942cb2720.json

@@ -0,0 +1 @@
+{"parent":null,"pid":29270,"argv":["/usr/local/bin/node","/usr/local/bin/npm","test"],"execArgv":[],"cwd":"/Users/wojciech.maj/Projekty/Open source projects/multer","time":1754858307371,"ppid":29260,"coverageFilename":"/Users/wojciech.maj/Projekty/Open source projects/multer/.nyc_output/3b5133f3-96f2-4223-942c-eebe80144959.json","externalId":"","uuid":"3b5133f3-96f2-4223-942c-eebe80144959","files":[]}

.nyc_output/processinfo/3b5133f3-96f2-4223-942c-eebe80144959.json

@@ -5,6 +5,7 @@ var deepEqual = require('deep-equal')
 
 var fs = require('fs')
 var path = require('path')
+var os = require('os')
 var util = require('./_util')
 var multer = require('../')
 var temp = require('fs-temp')
@@ -185,4 +186,60 @@ describe('Disk Storage', function () {
       done()
     })
   })
+
+  it('should use default destination when none is provided', function (done) {
+    var storage = multer.diskStorage({})
+    var upload = multer({ storage: storage })
+    var parser = upload.single('file')
+    var form = new FormData()
+
+    form.append('file', util.file('small0.dat'))
+
+    util.submitForm(parser, form, (err, req) => {
+      assert.ifError(err)
+
+      // Verify that the file was stored in the system's temporary directory
+      assert.strictEqual(path.dirname(req.file.path), os.tmpdir())
+
+      done()
+    })
+  })
+
+  it('should handle error in getDestination', function (done) {
+    var storage = multer.diskStorage({
+      destination: function (req, file, cb) {
+        cb(new Error('Test getDestination error'))
+      }
+    })
+    var upload = multer({ storage: storage })
+    var parser = upload.single('file')
+    var form = new FormData()
+
+    form.append('file', util.file('small0.dat'))
+
+    util.submitForm(parser, form, function (err, req) {
+      assert(err)
+      assert.strictEqual(err.message, 'Test getDestination error')
+      done()
+    })
+  })
+
+  it('should handle error in getFilename', function (done) {
+    var storage = multer.diskStorage({
+      filename: function (req, file, cb) {
+        cb(new Error('Test getFilename error'))
+      }
+    })
+    var upload = multer({ storage: storage })
+    var parser = upload.single('file')
+    var form = new FormData()
+
+    form.append('file', util.file('small0.dat'))
+
+    util.submitForm(parser, form, function (err, req) {
+      assert(err)
+      assert.strictEqual(err.message, 'Test getFilename error')
+      done()
+    })
+  })
 })