0.2.0 - Mid migration

web/node_modules/bfj/test/unit/datastream.js

@@ -0,0 +1,95 @@
+'use strict'
+
+const assert = require('chai').assert
+const spooks = require('spooks')
+
+const modulePath = '../../src/datastream'
+
+suite('datastream:', () => {
+  let log
+
+  setup(() => {
+    log = {}
+  })
+
+  test('require does not throw', () => {
+    assert.doesNotThrow(() => {
+      require(modulePath)
+    })
+  })
+
+  test('require returns function', () => {
+    assert.isFunction(require(modulePath))
+  })
+
+  suite('require:', () => {
+    let Stream
+
+    setup(() => {
+      Stream = require(modulePath)
+    })
+
+    test('Stream expects two arguments', () => {
+      assert.lengthOf(Stream, 2)
+    })
+
+    test('calling Stream with function argument doesNotThrow', () => {
+      assert.doesNotThrow(() => {
+        Stream(() => {})
+      })
+    })
+
+    test('calling Stream with object argument throws', () => {
+      assert.throws(() => {
+        Stream({ read: () => {} })
+      })
+    })
+
+    test('calling Stream with new returns Stream instance', () => {
+      assert.instanceOf(new Stream(() => {}), Stream)
+    })
+
+    test('calling Stream with new returns Readable instance', () => {
+      assert.instanceOf(new Stream(() => {}), require('stream').Readable)
+    })
+
+    test('calling Stream without new returns Stream instance', () => {
+      assert.instanceOf(Stream(() => {}), Stream)
+    })
+
+    suite('instantiate:', () => {
+      let datastream
+
+      setup(() => {
+        datastream = new Stream(spooks.fn({ name: 'read', log: log }))
+      })
+
+      test('datastream has _read method', () => {
+        assert.isFunction(datastream._read)
+      })
+
+      test('_read expects no arguments', () => {
+        assert.lengthOf(datastream._read, 0)
+      })
+
+      test('read was not called', () => {
+        assert.strictEqual(log.counts.read, 0)
+      })
+
+      suite('datastream._read:', () => {
+        setup(() => {
+          datastream._read()
+        })
+
+        test('read was called once', () => {
+          assert.strictEqual(log.counts.read, 1)
+          assert.isUndefined(log.these.read[0])
+        })
+
+        test('read was called correctly', () => {
+          assert.lengthOf(log.args.read[0], 0)
+        })
+      })
+    })
+  })
+})

web/node_modules/bfj/test/unit/error.js

@@ -0,0 +1,80 @@
+'use strict'
+
+const assert = require('chai').assert
+const modulePath = '../../src/error'
+
+suite('error:', () => {
+  let log
+
+  setup(() => {
+    log = {}
+  })
+
+  test('require does not throw', () => {
+    assert.doesNotThrow(() => {
+      require(modulePath)
+    })
+  })
+
+  test('require returns object', () => {
+    assert.isObject(require(modulePath))
+  })
+
+  suite('require:', () => {
+    let error
+
+    setup(() => {
+      error = require(modulePath)
+    })
+
+    test('error has create method', () => {
+      assert.isFunction(error.create)
+    })
+
+    test('error has no other methods', () => {
+      assert.lengthOf(Object.keys(error), 1)
+    })
+
+    test('create expects four arguments', () => {
+      assert.lengthOf(error.create, 4)
+    })
+
+    test('create does not throw', () => {
+      assert.doesNotThrow(() => {
+        error.create()
+      })
+    })
+
+    test('create returns Error', () => {
+      assert.instanceOf(error.create(), Error)
+    })
+
+    suite('create:', () => {
+      let created
+
+      setup(() => {
+        created = error.create('foo', 'bar', 'baz', 'qux')
+      })
+
+      test('created has correct actual property', () => {
+        assert.strictEqual(created.actual, 'foo')
+      })
+
+      test('created has correct expected property', () => {
+        assert.strictEqual(created.expected, 'bar')
+      })
+
+      test('created has correct lineNumber property', () => {
+        assert.strictEqual(created.lineNumber, 'baz')
+      })
+
+      test('created has correct columnNumber property', () => {
+        assert.strictEqual(created.columnNumber, 'qux')
+      })
+
+      test('created has correct message property', () => {
+        assert.strictEqual(created.message, 'JSON error: encountered `foo` at line baz, column qux where `bar` was expected.')
+      })
+    })
+  })
+})

web/node_modules/bfj/test/unit/jsonstream.js

@@ -0,0 +1,95 @@
+'use strict'
+
+const assert = require('chai').assert
+const spooks = require('spooks')
+
+const modulePath = '../../src/jsonstream'
+
+suite('jsonstream:', () => {
+  let log
+
+  setup(() => {
+    log = {}
+  })
+
+  test('require does not throw', () => {
+    assert.doesNotThrow(() => {
+      require(modulePath)
+    })
+  })
+
+  test('require returns function', () => {
+    assert.isFunction(require(modulePath))
+  })
+
+  suite('require:', () => {
+    let Stream
+
+    setup(() => {
+      Stream = require(modulePath)
+    })
+
+    test('Stream expects two arguments', () => {
+      assert.lengthOf(Stream, 2)
+    })
+
+    test('calling Stream with function argument doesNotThrow', () => {
+      assert.doesNotThrow(() => {
+        Stream(() => {})
+      })
+    })
+
+    test('calling Stream with object argument throws', () => {
+      assert.throws(() => {
+        Stream({ read: () => {} })
+      })
+    })
+
+    test('calling Stream with new returns Stream instance', () => {
+      assert.instanceOf(new Stream(() => {}), Stream)
+    })
+
+    test('calling Stream with new returns Readable instance', () => {
+      assert.instanceOf(new Stream(() => {}), require('stream').Readable)
+    })
+
+    test('calling Stream without new returns Stream instance', () => {
+      assert.instanceOf(Stream(() => {}), Stream)
+    })
+
+    suite('instantiate:', () => {
+      let jsonstream
+
+      setup(() => {
+        jsonstream = new Stream(spooks.fn({ name: 'read', log: log }))
+      })
+
+      test('jsonstream has _read method', () => {
+        assert.isFunction(jsonstream._read)
+      })
+
+      test('_read expects no arguments', () => {
+        assert.lengthOf(jsonstream._read, 0)
+      })
+
+      test('read was not called', () => {
+        assert.strictEqual(log.counts.read, 0)
+      })
+
+      suite('jsonstream._read:', () => {
+        setup(() => {
+          jsonstream._read()
+        })
+
+        test('read was called once', () => {
+          assert.strictEqual(log.counts.read, 1)
+          assert.isUndefined(log.these.read[0])
+        })
+
+        test('read was called correctly', () => {
+          assert.lengthOf(log.args.read[0], 0)
+        })
+      })
+    })
+  })
+})

web/node_modules/bfj/test/unit/read.js

@@ -0,0 +1,102 @@
+'use strict'
+
+const assert = require('chai').assert
+const proxyquire = require('proxyquire')
+const spooks = require('spooks')
+
+const modulePath = '../../src/read'
+
+suite('read:', () => {
+  test('require does not throw', () => {
+    assert.doesNotThrow(() => {
+      require(modulePath)
+    })
+  })
+
+  test('require returns function', () => {
+    assert.isFunction(require(modulePath))
+  })
+
+  suite('require:', () => {
+    let log, results, read
+
+    setup(() => {
+      log = {}
+      results = {
+        parse: [ {} ],
+        createReadStream: [ {} ]
+      }
+      read = proxyquire(modulePath, {
+        fs: {
+          createReadStream: spooks.fn({
+            name: 'createReadStream',
+            log: log,
+            results: results.createReadStream
+          })
+        },
+        './parse': spooks.fn({
+          name: 'parse',
+          log: log,
+          results: results.parse
+        })
+      })
+    })
+
+    test('read expects two arguments', () => {
+      assert.lengthOf(read, 2)
+    })
+
+    test('read does not throw', () => {
+      assert.doesNotThrow(() => {
+        read()
+      })
+    })
+
+    test('parse was not called', () => {
+      assert.strictEqual(log.counts.parse, 0)
+    })
+
+    test('fs.createReadStream was not called', () => {
+      assert.strictEqual(log.counts.createReadStream, 0)
+    })
+
+    suite('read:', () => {
+      let path, options, result
+
+      setup(() => {
+        path = {}
+        options = { foo: 'bar', ndjson: true }
+        result = read(path, options)
+      })
+
+      test('fs.createReadStream was called once', () => {
+        assert.strictEqual(log.counts.createReadStream, 1)
+      })
+
+      test('fs.createReadStream was called correctly', () => {
+        assert.lengthOf(log.args.createReadStream[0], 2)
+        assert.strictEqual(log.args.createReadStream[0][0], path)
+        assert.lengthOf(Object.keys(log.args.createReadStream[0][0]), 0)
+        assert.strictEqual(log.args.createReadStream[0][1], options)
+        assert.lengthOf(Object.keys(log.args.createReadStream[0][1]), 2)
+      })
+
+      test('parse was called once', () => {
+        assert.strictEqual(log.counts.parse, 1)
+      })
+
+      test('parse was called correctly', () => {
+        assert.isUndefined(log.these.parse[0])
+        assert.lengthOf(log.args.parse[0], 2)
+        assert.strictEqual(log.args.parse[0][0], results.createReadStream[0])
+        assert.lengthOf(Object.keys(log.args.parse[0][0]), 0)
+        assert.notStrictEqual(log.args.parse[0][1], options)
+        assert.deepEqual(log.args.parse[0][1], { foo: 'bar', ndjson: false })
+      })
+
+      test('parse result was returned', () => {
+        assert.strictEqual(result, results.parse[0])
+      })
+    })
+  })
+})

web/node_modules/bfj/test/unit/stringify.js

@@ -0,0 +1,195 @@
+'use strict'
+
+const assert = require('chai').assert
+const proxyquire = require('proxyquire')
+const spooks = require('spooks')
+const Promise = require('bluebird')
+
+const modulePath = '../../src/stringify'
+
+suite('stringify:', () => {
+  test('require does not throw', () => {
+    assert.doesNotThrow(() => {
+      require(modulePath)
+    })
+  })
+
+  test('require returns function', () => {
+    assert.isFunction(require(modulePath))
+  })
+
+  suite('require:', () => {
+    let log, stringify
+
+    setup(() => {
+      log = {}
+
+      stringify = proxyquire(modulePath, {
+        './streamify': spooks.fn({
+          name: 'streamify',
+          log: log,
+          results: [
+            { on: spooks.fn({ name: 'on', log: log }) }
+          ]
+        })
+      })
+    })
+
+    test('stringify expects two arguments', () => {
+      assert.lengthOf(stringify, 2)
+    })
+
+    test('stringify does not throw', () => {
+      assert.doesNotThrow(() => {
+        stringify()
+      })
+    })
+
+    test('stringify returns promise', () => {
+      assert.instanceOf(stringify(), Promise)
+    })
+
+    test('streamify was not called', () => {
+      assert.strictEqual(log.counts.streamify, 0)
+    })
+
+    suite('stringify:', () => {
+      let data, options, resolved, rejected, result, done
+
+      setup(() => {
+        data = {}
+        options = {}
+        stringify(data, options)
+          .then(res => {
+            resolved = res
+            done()
+          })
+          .catch(rej => {
+            rejected = rej
+            done()
+          })
+      })
+
+      teardown(() => {
+        resolved = rejected = undefined
+      })
+
+      test('streamify was called once', () => {
+        assert.strictEqual(log.counts.streamify, 1)
+        assert.isUndefined(log.these.streamify[0])
+      })
+
+      test('streamify was called correctly', () => {
+        assert.lengthOf(log.args.streamify[0], 2)
+        assert.strictEqual(log.args.streamify[0][0], data)
+        assert.lengthOf(Object.keys(log.args.streamify[0][0]), 0)
+        assert.strictEqual(log.args.streamify[0][1], options)
+        assert.lengthOf(Object.keys(log.args.streamify[0][1]), 0)
+      })
+
+      test('stream.on was called four times', () => {
+        assert.strictEqual(log.counts.on, 4)
+      })
+
+      test('stream.on was called correctly first time', () => {
+        assert.lengthOf(log.args.on[0], 2)
+        assert.strictEqual(log.args.on[0][0], 'data')
+        assert.isFunction(log.args.on[0][1])
+      })
+
+      test('stream.on was called correctly second time', () => {
+        assert.strictEqual(log.args.on[1][0], 'end')
+        assert.isFunction(log.args.on[1][1])
+        assert.notStrictEqual(log.args.on[1][1], log.args.on[0][1])
+      })
+
+      test('stream.on was called correctly third time', () => {
+        assert.strictEqual(log.args.on[2][0], 'error')
+        assert.isFunction(log.args.on[2][1])
+        assert.notStrictEqual(log.args.on[2][1], log.args.on[0][1])
+        assert.notStrictEqual(log.args.on[2][1], log.args.on[1][1])
+      })
+
+      test('stream.on was called correctly fourth time', () => {
+        assert.strictEqual(log.args.on[3][0], 'dataError')
+        assert.isFunction(log.args.on[3][1])
+        assert.strictEqual(log.args.on[3][1], log.args.on[2][1])
+      })
+
+      test('promise is unfulfilled', () => {
+        assert.isUndefined(resolved)
+        assert.isUndefined(rejected)
+      })
+
+      suite('data event:', () => {
+        setup(() => {
+          log.args.on[0][1]('foo')
+        })
+
+        test('promise is unfulfilled', () => {
+          assert.isUndefined(resolved)
+          assert.isUndefined(rejected)
+        })
+
+        suite('end event:', () => {
+          setup(d => {
+            done = d
+            log.args.on[1][1]()
+          })
+
+          test('promise is resolved', () => {
+            assert.strictEqual(resolved, 'foo')
+          })
+
+          test('promise is not rejected', () => {
+            assert.isUndefined(rejected)
+          })
+        })
+
+        suite('data event:', () => {
+          setup(() => {
+            log.args.on[0][1]('bar')
+          })
+
+          test('promise is unfulfilled', () => {
+            assert.isUndefined(resolved)
+            assert.isUndefined(rejected)
+          })
+
+          suite('end event:', () => {
+            setup(d => {
+              done = d
+              log.args.on[1][1]()
+            })
+
+            test('promise is resolved', () => {
+              assert.strictEqual(resolved, 'foobar')
+            })
+          })
+
+          suite('error event:', () => {
+            setup(d => {
+              done = d
+              log.args.on[2][1]('wibble')
+            })
+
+            test('promise is rejected', () => {
+              assert.strictEqual(rejected, 'wibble')
+            })
+          })
+
+          suite('dataError event:', () => {
+            setup(d => {
+              done = d
+              log.args.on[3][1]('wibble')
+            })
+
+            test('promise is rejected', () => {
+              assert.strictEqual(rejected, 'wibble')
+            })
+          })
+        })
+      })
+    })
+  })
+})

web/node_modules/bfj/test/unit/unpipe.js

@@ -0,0 +1,125 @@
+'use strict'
+
+const assert = require('chai').assert
+const proxyquire = require('proxyquire')
+const spooks = require('spooks')
+const Promise = require('bluebird')
+
+const modulePath = '../../src/unpipe'
+
+suite('unpipe:', () => {
+  test('require does not throw', () => {
+    assert.doesNotThrow(() => {
+      require(modulePath)
+    })
+  })
+
+  test('require returns function', () => {
+    assert.isFunction(require(modulePath))
+  })
+
+  suite('require:', () => {
+    let log, results, unpipe
+
+    setup(() => {
+      log = {}
+      results = {
+        parse: [ Promise.resolve() ]
+      }
+      unpipe = proxyquire(modulePath, {
+        './parse': spooks.fn({
+          name: 'parse',
+          log: log,
+          results: results.parse
+        })
+      })
+    })
+
+    test('unpipe expects two arguments', () => {
+      assert.lengthOf(unpipe, 2)
+    })
+
+    test('unpipe does not throw', () => {
+      assert.doesNotThrow(() => {
+        unpipe(() => {})
+      })
+    })
+
+    test('unpipe throws if callback is not provided', () => {
+      assert.throws(() => {
+        unpipe()
+      })
+    })
+
+    test('parse was not called', () => {
+      assert.strictEqual(log.counts.parse, 0)
+    })
+
+    suite('unpipe success:', () => {
+      let result, error, options
+
+      setup(done => {
+        results.parse[0] = Promise.resolve('foo')
+        options = { foo: 'bar', ndjson: true }
+        unpipe((err, res) => {
+          error = err
+          result = res
+          done()
+        }, options)
+      })
+
+      test('parse was called once', () => {
+        assert.strictEqual(log.counts.parse, 1)
+      })
+
+      test('parse was called correctly', () => {
+        assert.isUndefined(log.these.parse[0])
+        assert.lengthOf(log.args.parse[0], 2)
+        assert.isObject(log.args.parse[0][0])
+        assert.isTrue(log.args.parse[0][0].readable)
+        assert.isTrue(log.args.parse[0][0].writable)
+        assert.isFunction(log.args.parse[0][0].pipe)
+        assert.isFunction(log.args.parse[0][0].read)
+        assert.isFunction(log.args.parse[0][0]._read)
+        assert.isFunction(log.args.parse[0][0].write)
+        assert.isFunction(log.args.parse[0][0]._write)
+        assert.notStrictEqual(log.args.parse[0][1], options)
+        assert.deepEqual(log.args.parse[0][1], { foo: 'bar', ndjson: false })
+      })
+
+      test('parse result was returned', () => {
+        assert.strictEqual(result, 'foo')
+      })
+
+      test('did not fail', () => {
+        assert.isNull(error)
+      })
+    })
+
+    suite('unpipe error:', () => {
+      let result, error, options
+
+      setup(done => {
+        results.parse[0] = Promise.reject('bar')
+        options = {}
+        unpipe((err, res) => {
+          error = err
+          result = res
+          done()
+        }, options)
+      })
+
+      test('parse was called once', () => {
+        assert.strictEqual(log.counts.parse, 1)
+      })
+
+      test('parse result was not returned', () => {
+        assert.isUndefined(result)
+      })
+
+      test('failed', () => {
+        assert.strictEqual(error, 'bar')
+      })
+    })
+  })
+})

web/node_modules/bfj/test/unit/write.js

@@ -0,0 +1,260 @@
+'use strict'
+
+const assert = require('chai').assert
+const proxyquire = require('proxyquire')
+const spooks = require('spooks')
+const Promise = require('bluebird')
+
+const modulePath = '../../src/write'
+
+suite('write:', () => {
+  test('require does not throw', () => {
+    assert.doesNotThrow(() => {
+      require(modulePath)
+    })
+  })
+
+  test('require returns function', () => {
+    assert.isFunction(require(modulePath))
+  })
+
+  suite('require:', () => {
+    let log, results, write
+
+    setup(() => {
+      log = {}
+      results = {
+        createWriteStream: [ {} ]
+      }
+
+      write = proxyquire(modulePath, {
+        'fs': {
+          createWriteStream: spooks.fn({
+            name: 'createWriteStream',
+            log: log,
+            results: results.createWriteStream
+          })
+        },
+        './streamify': spooks.fn({
+          name: 'streamify',
+          log: log,
+          results: [
+            {
+              pipe: spooks.fn({ name: 'pipe', log: log, chain: true }),
+              on: spooks.fn({ name: 'on', log: log, chain: true })
+            }
+          ]
+        })
+      })
+    })
+
+    test('write expects three arguments', () => {
+      assert.lengthOf(write, 3)
+    })
+
+    test('write does not throw', () => {
+      assert.doesNotThrow(() => {
+        write()
+      })
+    })
+
+    test('streamify was not called', () => {
+      assert.strictEqual(log.counts.streamify, 0)
+    })
+
+    test('fs.createWriteStream was not called', () => {
+      assert.strictEqual(log.counts.createWriteStream, 0)
+    })
+
+    test('stream.pipe was not called', () => {
+      assert.strictEqual(log.counts.pipe, 0)
+    })
+
+    test('stream.on was not called', () => {
+      assert.strictEqual(log.counts.on, 0)
+    })
+
+    suite('write:', () => {
+      let path, data, options, result
+
+      setup(() => {
+        path = {}
+        data = {}
+        options = {}
+        result = write(path, data, options)
+      })
+
+      test('streamify was called once', () => {
+        assert.strictEqual(log.counts.streamify, 1)
+        assert.isUndefined(log.these.streamify[0])
+      })
+
+      test('streamify was called correctly', () => {
+        assert.lengthOf(log.args.streamify[0], 2)
+        assert.strictEqual(log.args.streamify[0][0], data)
+        assert.lengthOf(Object.keys(log.args.streamify[0][0]), 0)
+        assert.strictEqual(log.args.streamify[0][1], options)
+        assert.lengthOf(Object.keys(log.args.streamify[0][1]), 0)
+      })
+
+      test('fs.createWriteStream was called once', () => {
+        assert.strictEqual(log.counts.createWriteStream, 1)
+      })
+
+      test('fs.createWriteStream was called correctly', () => {
+        assert.lengthOf(log.args.createWriteStream[0], 2)
+        assert.strictEqual(log.args.createWriteStream[0][0], path)
+        assert.lengthOf(Object.keys(log.args.createWriteStream[0][0]), 0)
+        assert.strictEqual(log.args.createWriteStream[0][1], options)
+        assert.lengthOf(Object.keys(log.args.createWriteStream[0][1]), 0)
+      })
+
+      test('stream.pipe was called once', () => {
+        assert.strictEqual(log.counts.pipe, 1)
+      })
+
+      test('stream.pipe was called correctly', () => {
+        assert.lengthOf(log.args.pipe[0], 1)
+        assert.strictEqual(log.args.pipe[0][0], results.createWriteStream[0])
+        assert.lengthOf(Object.keys(log.args.pipe[0][0]), 0)
+      })
+
+      test('stream.on was called three times', () => {
+        assert.strictEqual(log.counts.on, 3)
+      })
+
+      test('stream.on was called correctly first time', () => {
+        assert.lengthOf(log.args.on[0], 2)
+        assert.strictEqual(log.args.on[0][0], 'finish')
+        assert.isFunction(log.args.on[0][1])
+      })
+
+      test('stream.on was called correctly second time', () => {
+        assert.lengthOf(log.args.on[1], 2)
+        assert.strictEqual(log.args.on[1][0], 'error')
+        assert.isFunction(log.args.on[1][1])
+        assert.notStrictEqual(log.args.on[1][1], log.args.on[0][1])
+      })
+
+      test('stream.on was called correctly third time', () => {
+        assert.lengthOf(log.args.on[2], 2)
+        assert.strictEqual(log.args.on[2][0], 'dataError')
+        assert.isFunction(log.args.on[2][1])
+        assert.notStrictEqual(log.args.on[2][1], log.args.on[0][1])
+        assert.strictEqual(log.args.on[2][1], log.args.on[1][1])
+      })
+
+      test('promise was returned', () => {
+        assert.instanceOf(result, Promise)
+      })
+
+      suite('dispatch finish event:', () => {
+        let resolved, error, passed, failed
+
+        setup(done => {
+          passed = failed = false
+
+          result.then(res => {
+            resolved = res
+            passed = true
+            done()
+          }).catch(err => {
+            error = err
+            failed = true
+            done()
+          })
+          log.args.on[0][1]('foo')
+        })
+
+        test('promise was resolved', () => {
+          assert.isTrue(passed)
+          assert.isFalse(failed)
+          assert.isUndefined(resolved)
+        })
+      })
+
+      suite('dispatch error event:', () => {
+        let resolved, error, passed, failed
+
+        setup(done => {
+          passed = failed = false
+
+          result.then(r => {
+            resolved = r
+            passed = true
+            done()
+          }).catch(e => {
+            error = e
+            failed = true
+            done()
+          })
+          log.args.on[1][1]('foo')
+        })
+
+        test('promise was rejected', () => {
+          assert.isTrue(failed)
+          assert.isFalse(passed)
+          assert.strictEqual(error, 'foo')
+        })
+      })
+
+      suite('dispatch dataError event:', () => {
+        let resolved, error, passed, failed
+
+        setup(done => {
+          passed = failed = false
+
+          result.then(r => {
+            resolved = r
+            passed = true
+            done()
+          }).catch(e => {
+            error = e
+            failed = true
+            done()
+          })
+          log.args.on[2][1]('wibble')
+        })
+
+        test('promise was rejected', () => {
+          assert.isTrue(failed)
+          assert.isFalse(passed)
+          assert.strictEqual(error, 'wibble')
+        })
+      })
+    })
+  })
+})
+
+suite('write with error thrown by fs.createWriteStream:', () => {
+  let write
+
+  setup(() => {
+    write = proxyquire(modulePath, {
+      fs: {
+        createWriteStream () {
+          throw new Error('foo')
+        }
+      },
+      './streamify': () => ({
+        pipe: spooks.fn({ name: 'pipe', log: {}, chain: true }),
+        on: spooks.fn({ name: 'on', log: {}, chain: true })
+      })
+    })
+  })
+
+  test('write does not throw', () => {
+    assert.doesNotThrow(() => {
+      write().catch(() => {})
+    })
+  })
+
+  test('write rejects', () => {
+    write()
+      .then(() => assert.fail('write should reject'))
+      .catch(error => {
+        assert.instanceOf(error, Error)
+        assert.equal(error.message, 'foo')
+      })
+  })
+})