1 files changed, 401 insertions, 0 deletions
diff --git a/test/fetch/formdata.js b/test/fetch/formdata.js
new file mode 100644
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--- /dev/null
+++ b/test/fetch/formdata.js
@@ -0,0 +1,401 @@
+'use strict'
+
+const { test } = require('tap')
+const { FormData, File, Response } = require('../../')
+const { Blob: ThirdPartyBlob } = require('formdata-node')
+const { Blob } = require('buffer')
+const { isFormDataLike } = require('../../lib/core/util')
+const ThirdPartyFormDataInvalid = require('form-data')
+
+test('arg validation', (t) => {
+  const form = new FormData()
+
+  // constructor
+  t.throws(() => {
+    // eslint-disable-next-line
+    new FormData('asd')
+  }, TypeError)
+
+  // append
+  t.throws(() => {
+    FormData.prototype.append.call(null)
+  }, TypeError)
+  t.throws(() => {
+    form.append()
+  }, TypeError)
+  t.throws(() => {
+    form.append('k', 'not usv', '')
+  }, TypeError)
+
+  // delete
+  t.throws(() => {
+    FormData.prototype.delete.call(null)
+  }, TypeError)
+  t.throws(() => {
+    form.delete()
+  }, TypeError)
+
+  // get
+  t.throws(() => {
+    FormData.prototype.get.call(null)
+  }, TypeError)
+  t.throws(() => {
+    form.get()
+  }, TypeError)
+
+  // getAll
+  t.throws(() => {
+    FormData.prototype.getAll.call(null)
+  }, TypeError)
+  t.throws(() => {
+    form.getAll()
+  }, TypeError)
+
+  // has
+  t.throws(() => {
+    FormData.prototype.has.call(null)
+  }, TypeError)
+  t.throws(() => {
+    form.has()
+  }, TypeError)
+
+  // set
+  t.throws(() => {
+    FormData.prototype.set.call(null)
+  }, TypeError)
+  t.throws(() => {
+    form.set('k')
+  }, TypeError)
+  t.throws(() => {
+    form.set('k', 'not usv', '')
+  }, TypeError)
+
+  // iterator
+  t.throws(() => {
+    Reflect.apply(FormData.prototype[Symbol.iterator], null)
+  }, TypeError)
+
+  // toStringTag
+  t.doesNotThrow(() => {
+    FormData.prototype[Symbol.toStringTag].charAt(0)
+  })
+
+  t.end()
+})
+
+test('append file', (t) => {
+  const form = new FormData()
+  form.set('asd', new File([], 'asd1', { type: 'text/plain' }), 'asd2')
+  form.append('asd2', new File([], 'asd1'), 'asd2')
+
+  t.equal(form.has('asd'), true)
+  t.equal(form.has('asd2'), true)
+  t.equal(form.get('asd').name, 'asd2')
+  t.equal(form.get('asd2').name, 'asd2')
+  t.equal(form.get('asd').type, 'text/plain')
+  form.delete('asd')
+  t.equal(form.get('asd'), null)
+  t.equal(form.has('asd2'), true)
+  t.equal(form.has('asd'), false)
+
+  t.end()
+})
+
+test('append blob', async (t) => {
+  const form = new FormData()
+  form.set('asd', new Blob(['asd1'], { type: 'text/plain' }))
+
+  t.equal(form.has('asd'), true)
+  t.equal(form.get('asd').type, 'text/plain')
+  t.equal(await form.get('asd').text(), 'asd1')
+  form.delete('asd')
+  t.equal(form.get('asd'), null)
+
+  t.end()
+})
+
+test('append third-party blob', async (t) => {
+  const form = new FormData()
+  form.set('asd', new ThirdPartyBlob(['asd1'], { type: 'text/plain' }))
+
+  t.equal(form.has('asd'), true)
+  t.equal(form.get('asd').type, 'text/plain')
+  t.equal(await form.get('asd').text(), 'asd1')
+  form.delete('asd')
+  t.equal(form.get('asd'), null)
+
+  t.end()
+})
+
+test('append string', (t) => {
+  const form = new FormData()
+  form.set('k1', 'v1')
+  form.set('k2', 'v2')
+  t.same([...form], [['k1', 'v1'], ['k2', 'v2']])
+  t.equal(form.has('k1'), true)
+  t.equal(form.get('k1'), 'v1')
+  form.append('k1', 'v1+')
+  t.same(form.getAll('k1'), ['v1', 'v1+'])
+  form.set('k2', 'v1++')
+  t.equal(form.get('k2'), 'v1++')
+  form.delete('asd')
+  t.equal(form.get('asd'), null)
+  t.end()
+})
+
+test('formData.entries', (t) => {
+  t.plan(2)
+  const form = new FormData()
+
+  t.test('with 0 entries', (t) => {
+    t.plan(1)
+
+    const entries = [...form.entries()]
+    t.same(entries, [])
+  })
+
+  t.test('with 1+ entries', (t) => {
+    t.plan(2)
+
+    form.set('k1', 'v1')
+    form.set('k2', 'v2')
+
+    const entries = [...form.entries()]
+    const entries2 = [...form.entries()]
+    t.same(entries, [['k1', 'v1'], ['k2', 'v2']])
+    t.same(entries, entries2)
+  })
+})
+
+test('formData.keys', (t) => {
+  t.plan(2)
+  const form = new FormData()
+
+  t.test('with 0 keys', (t) => {
+    t.plan(1)
+
+    const keys = [...form.entries()]
+    t.same(keys, [])
+  })
+
+  t.test('with 1+ keys', (t) => {
+    t.plan(2)
+
+    form.set('k1', 'v1')
+    form.set('k2', 'v2')
+
+    const keys = [...form.keys()]
+    const keys2 = [...form.keys()]
+    t.same(keys, ['k1', 'k2'])
+    t.same(keys, keys2)
+  })
+})
+
+test('formData.values', (t) => {
+  t.plan(2)
+  const form = new FormData()
+
+  t.test('with 0 values', (t) => {
+    t.plan(1)
+
+    const values = [...form.values()]
+    t.same(values, [])
+  })
+
+  t.test('with 1+ values', (t) => {
+    t.plan(2)
+
+    form.set('k1', 'v1')
+    form.set('k2', 'v2')
+
+    const values = [...form.values()]
+    const values2 = [...form.values()]
+    t.same(values, ['v1', 'v2'])
+    t.same(values, values2)
+  })
+})
+
+test('formData forEach', (t) => {
+  t.test('invalid arguments', (t) => {
+    t.throws(() => {
+      FormData.prototype.forEach.call({})
+    }, TypeError('Illegal invocation'))
+
+    t.throws(() => {
+      const fd = new FormData()
+
+      fd.forEach({})
+    }, TypeError)
+
+    t.end()
+  })
+
+  t.test('with a callback', (t) => {
+    const fd = new FormData()
+
+    fd.set('a', 'b')
+    fd.set('c', 'd')
+
+    let i = 0
+    fd.forEach((value, key, self) => {
+      if (i++ === 0) {
+        t.equal(value, 'b')
+        t.equal(key, 'a')
+      } else {
+        t.equal(value, 'd')
+        t.equal(key, 'c')
+      }
+
+      t.equal(fd, self)
+    })
+
+    t.end()
+  })
+
+  t.test('with a thisArg', (t) => {
+    const fd = new FormData()
+    fd.set('b', 'a')
+
+    fd.forEach(function (value, key, self) {
+      t.equal(this, globalThis)
+      t.equal(fd, self)
+      t.equal(key, 'b')
+      t.equal(value, 'a')
+    })
+
+    const thisArg = Symbol('thisArg')
+    fd.forEach(function () {
+      t.equal(this, thisArg)
+    }, thisArg)
+
+    t.end()
+  })
+
+  t.end()
+})
+
+test('formData toStringTag', (t) => {
+  const form = new FormData()
+  t.equal(form[Symbol.toStringTag], 'FormData')
+  t.equal(FormData.prototype[Symbol.toStringTag], 'FormData')
+  t.end()
+})
+
+test('formData.constructor.name', (t) => {
+  const form = new FormData()
+  t.equal(form.constructor.name, 'FormData')
+  t.end()
+})
+
+test('formData should be an instance of FormData', (t) => {
+  t.plan(3)
+
+  t.test('Invalid class FormData', (t) => {
+    class FormData {
+      constructor () {
+        this.data = []
+      }
+
+      append (key, value) {
+        this.data.push([key, value])
+      }
+
+      get (key) {
+        return this.data.find(([k]) => k === key)
+      }
+    }
+
+    const form = new FormData()
+    t.equal(isFormDataLike(form), false)
+    t.end()
+  })
+
+  t.test('Invalid function FormData', (t) => {
+    function FormData () {
+      const data = []
+      return {
+        append (key, value) {
+          data.push([key, value])
+        },
+        get (key) {
+          return data.find(([k]) => k === key)
+        }
+      }
+    }
+
+    const form = new FormData()
+    t.equal(isFormDataLike(form), false)
+    t.end()
+  })
+
+  test('Invalid third-party FormData', (t) => {
+    const form = new ThirdPartyFormDataInvalid()
+    t.equal(isFormDataLike(form), false)
+    t.end()
+  })
+
+  t.test('Valid FormData', (t) => {
+    const form = new FormData()
+    t.equal(isFormDataLike(form), true)
+    t.end()
+  })
+})
+
+test('FormData should be compatible with third-party libraries', (t) => {
+  t.plan(1)
+
+  class FormData {
+    constructor () {
+      this.data = []
+    }
+
+    get [Symbol.toStringTag] () {
+      return 'FormData'
+    }
+
+    append () {}
+    delete () {}
+    get () {}
+    getAll () {}
+    has () {}
+    set () {}
+    entries () {}
+    keys () {}
+    values () {}
+    forEach () {}
+  }
+
+  const form = new FormData()
+  t.equal(isFormDataLike(form), true)
+})
+
+test('arguments', (t) => {
+  t.equal(FormData.constructor.length, 1)
+  t.equal(FormData.prototype.append.length, 2)
+  t.equal(FormData.prototype.delete.length, 1)
+  t.equal(FormData.prototype.get.length, 1)
+  t.equal(FormData.prototype.getAll.length, 1)
+  t.equal(FormData.prototype.has.length, 1)
+  t.equal(FormData.prototype.set.length, 2)
+
+  t.end()
+})
+
+// https://github.com/nodejs/undici/pull/1814
+test('FormData returned from bodyMixin.formData is not a clone', async (t) => {
+  const fd = new FormData()
+  fd.set('foo', 'bar')
+
+  const res = new Response(fd)
+  fd.set('foo', 'foo')
+
+  const fd2 = await res.formData()
+
+  t.equal(fd2.get('foo'), 'bar')
+  t.equal(fd.get('foo'), 'foo')
+
+  fd2.set('foo', 'baz')
+
+  t.equal(fd2.get('foo'), 'baz')
+  t.equal(fd.get('foo'), 'foo')
+})