Fix Blob constructor create from Blob bug #44

src/polyfill/Blob.js

@@ -55,17 +55,31 @@ export default class Blob {
     let p = null
     if(data instanceof Blob) {
       log.verbose('create Blob cache file from Blob object')
-      this._ref = data.getRNFetchBlobRef()
-      p = fs.stat(String(this._ref).replace('RNFetchBlob-file://'))
-            .then((stat) =>  Promise.resolve(stat.size))
+      let size = 0
+      this._ref = String(data.getRNFetchBlobRef())
+      let orgPath = this._ref
+      p = fs.exists(orgPath)
+            .then((exist) =>  {
+              if(exist)
+                return fs.writeFile(orgPath, data, 'uri')
+                         .then((size) => Promise.resolve(size))
+                         .catch((err) => {
+                           throw `RNFetchBlob Blob file creation error, ${err}`
+                         })
+              else
+                throw `could not create Blob from path ${orgPath}, file not exists`
+            })
     }
     // if the data is a string starts with `RNFetchBlob-file://`, append the
     // Blob data from file path
     else if(typeof data === 'string' && data.startsWith('RNFetchBlob-file://')) {
-      log.verbose('create Blob cache file from file path')
-      this._ref = data
-      p = fs.stat(String(this._ref).replace('RNFetchBlob-file://'))
-            .then((stat) =>  Promise.resolve(stat.size))
+      log.verbose('create Blob cache file from file path', data)
+      this._ref = String(data).replace('RNFetchBlob-file://', '')
+      let orgPath = this._ref
+      p = fs.stat(orgPath)
+            .then((stat) =>  {
+                return Promise.resolve(stat.size)
+            })
     }
     // content from variable need create file
     else if(typeof data === 'string') {
@@ -197,6 +211,7 @@ function createMixedBlobData(ref, dataArray) {
   }
   return p.then(() => {
     let promises = args.map((p) => {
+      log.verbose('mixed blob write', ...p)
       return fs.appendFile.call(this, ...p)
     })
     return Promise.all(promises).then((sizes) => {

test/test-firebase.js

@@ -98,3 +98,38 @@ describe('download firebase storage item', (report, done) => {
     done()
   })
 })
+
+let tier2FileName = `firebase-test-${Platform.OS}-github2.jpg`
+
+describe('upload using file path', (report, done) => {
+  RNFetchBlob
+    .config({ fileCache : true, appendExt : 'jpg' })
+    .fetch('GET', `${TEST_SERVER_URL}/public/github2.jpg`)
+    .then((resp) => {
+      report(<Info key="test image">
+        <Image style={styles.image} source={{uri : prefix + resp.path()}}/>
+      </Info>)
+      let blob = new Blob(RNFetchBlob.wrap(resp.path()), { type : 'image/jpg' })
+      blob.onCreated(() => {
+        firebase.storage().ref('rnfbtest')
+          .child(tier2FileName)
+          .put(blob, { contentType : 'image/jpg' })
+          .then(() => {
+            report(<Assert key="upload finished" />)
+            done()
+          })
+      })
+    })
+})
+
+describe('verify uploaded file', (report, done) => {
+  firebase.storage().ref('rnfbtest/' + tier2FileName)
+    .getDownloadURL()
+    .then((url) => {
+      console.log(url)
+      report(<Info key="image viewer">
+        <Image style={styles.image} source={{uri : url}}/>
+      </Info>)
+      done()
+    })
+})

test/test-init.js

@@ -58,14 +58,14 @@ describe('GET image from server', (report, done) => {
 })
 
 
-require('./test-0.1.x-0.4.x')
-require('./test-0.5.1')
-require('./test-0.5.2')
-require('./test-0.6.0')
-require('./test-0.6.2')
-require('./test-0.6.3')
-require('./test-0.7.0')
-require('./test-0.8.0')
-require('./test-fs')
+// require('./test-0.1.x-0.4.x')
+// require('./test-0.5.1')
+// require('./test-0.5.2')
+// require('./test-0.6.0')
+// require('./test-0.6.2')
+// require('./test-0.6.3')
+// require('./test-0.7.0')
+// require('./test-0.8.0')
+// require('./test-fs')
 require('./test-firebase')
-require('./test-android')
+// require('./test-android')