Added coveralls support and initial FileSystem test.

Author: billmalarky

.eslintignore

@@ -0,0 +1 @@
+/coverage

.eslintrc.js

@@ -38,6 +38,7 @@ module.exports = {
     "semi": [
       "error",
       "always"
-    ]
+    ],
+    "no-var": "error"
   }
 };

.gitignore

@@ -1 +1,2 @@
-/node_modules
+/node_modules
+/coverage

lib/FileSystem.js

@@ -192,9 +192,10 @@ export class FileSystem {
     }
 
     // Hit network and download file to local disk.
+    let result = null;
     try {
 
-      var result = await RNFetchBlob
+      result = await RNFetchBlob
         .config({
           path: path
         })

package.json

@@ -4,7 +4,7 @@
   "description": "React Native Higher Order Component that adds advanced caching functionality to the react native Image component.",
   "main": "index.js",
   "scripts": {
-    "test": "jest",
+    "test": "./node_modules/.bin/jest --coverage && cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js",
     "lint": "eslint ."
   },
   "repository": {
@@ -33,6 +33,7 @@
   "homepage": "https://github.com/billmalarky/react-native-image-cache-hoc#readme",
   "devDependencies": {
     "babel-eslint": "^8.0.1",
+    "coveralls": "^3.0.0",
     "eslint": "^4.9.0",
     "eslint-plugin-react": "^7.4.0",
     "eslint-plugin-react-native": "^3.1.0",
@@ -41,7 +42,10 @@
     "should": "^13.1.2"
   },
   "jest": {
-    "preset": "react-native"
+    "preset": "react-native",
+    "setupFiles": [
+      "./tests/config.js"
+    ]
   },
   "dependencies": {
     "buffer": "^5.0.8",

tests/FileSystem.test.js

@@ -0,0 +1,29 @@
+
+// Define globals for eslint.
+/* global describe it */
+
+// Load dependencies
+import should from 'should'; // eslint-disable-line no-unused-vars
+import FileSystemFactory from '../lib/FileSystem';
+
+describe('lib/FileSystem', function() {
+
+  const fileSystem = FileSystemFactory();
+
+  it('#getFileNameFromUrl should create a sha1 filename from a PNG/JPG/GIF url.', () => {
+
+    let pngFilename = fileSystem.getFileNameFromUrl('https://img.wennermedia.com/5333a62d-07db-432a-92e2-198cafa38a14-326adb1a-d8ed-4a5d-b37e-5c88883e1989.png');
+
+    pngFilename.should.equal('cd7d2199cd8e088cdfd9c99fc6359666adc36289.png');
+
+    let gifFilename = fileSystem.getFileNameFromUrl('https://upload.wikimedia.org/wikipedia/commons/2/2c/Rotating_earth_%28large%29.gif');
+
+    gifFilename.should.equal('c048132247cd28c7879ab36d78a8f45194640006.gif');
+
+    let jpgFilename = fileSystem.getFileNameFromUrl('https://cdn2.hubspot.net/hub/42284/file-14233687-jpg/images/test_in_red.jpg');
+
+    jpgFilename.should.equal('6adf4569ecc3bf8c378bb4d47b1995cd85c5a13c.jpg');
+
+  });
+
+});

tests/config.js

@@ -0,0 +1,19 @@
+/**
+ *
+ * Mocked objects for testing.
+ *
+ */
+
+/* global jest */
+
+jest.mock('react-native-fetch-blob', () => {
+  return {
+    fs: {
+      dirs: {
+        CacheDir: 'test'
+      }
+    },
+    DocumentDir: () => {},
+    polyfill: () => {},
+  };
+});

yarn.lock

@@ -1272,6 +1272,16 @@ [email protected], core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
 
+coveralls@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/coveralls/-/coveralls-3.0.0.tgz#22ef730330538080d29b8c151dc9146afde88a99"
+  dependencies:
+    js-yaml "^3.6.1"
+    lcov-parse "^0.0.10"
+    log-driver "^1.2.5"
+    minimist "^1.2.0"
+    request "^2.79.0"
+
 [email protected]:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/crc/-/crc-3.3.0.tgz#fa622e1bc388bf257309082d6b65200ce67090ba"
@@ -2740,7 +2750,7 @@ js-tokens@^3.0.0, js-tokens@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
 
-js-yaml@^3.7.0, js-yaml@^3.9.1:
+js-yaml@^3.6.1, js-yaml@^3.7.0, js-yaml@^3.9.1:
   version "3.10.0"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.10.0.tgz#2e78441646bd4682e963f22b6e92823c309c62dc"
   dependencies:
@@ -2866,6 +2876,10 @@ lcid@^1.0.0:
   dependencies:
     invert-kv "^1.0.0"
 
+lcov-parse@^0.0.10:
+  version "0.0.10"
+  resolved "https://registry.yarnpkg.com/lcov-parse/-/lcov-parse-0.0.10.tgz#1b0b8ff9ac9c7889250582b70b71315d9da6d9a3"
+
 left-pad@^1.1.3:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/left-pad/-/left-pad-1.1.3.tgz#612f61c033f3a9e08e939f1caebeea41b6f3199a"
@@ -3010,6 +3024,10 @@ lodash@^4.14.0, lodash@^4.16.6, lodash@^4.17.4, lodash@^4.2.0, lodash@^4.3.0, lo
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
 
+log-driver@^1.2.5:
+  version "1.2.5"
+  resolved "https://registry.yarnpkg.com/log-driver/-/log-driver-1.2.5.tgz#7ae4ec257302fd790d557cb10c97100d857b0056"
+
 longest@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"
@@ -3711,7 +3729,7 @@ react-devtools-core@^2.5.0:
     shell-quote "^1.6.1"
     ws "^2.0.3"
 
-react-native-fetch-blob@^0.10.8:
+[email protected]:
   version "0.10.8"
   resolved "https://registry.yarnpkg.com/react-native-fetch-blob/-/react-native-fetch-blob-0.10.8.tgz#4fc256abae0cb5f10e7c41f28c11b3ff330d72a9"
   dependencies: