chushihua

node_modules/bfj-node4/test/unit/write.js

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+'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')
+      })
+  })
+})