Fix #605: add migration tests for Filer 0.43

package.json

@@ -22,6 +22,7 @@
     "lint": "eslint src tests",
     "lint:fix": "eslint --fix src tests",
     "test:manual": "parcel tests/index.html --out-dir tests/dist",
+    "test:migrations": "mocha tests/filesystems/migrations",
     "pretest": "npm run lint",
     "test": "npm run karma-mocha",
     "prebuild": "parcel build --global Filer src/index.js --no-minify --out-file filer.js",

tests/filesystems/images/README.md

@@ -0,0 +1,7 @@
+The following images are JSON filesystem images created with
+`tools/fs-image.js`, and named with the filesystem dir used
+as the source of the image, and the version of Filer used to
+generate them:
+
+1. `tiny-fs.0.43.json` was created from `tests/filesystem/tiny-fs/` with https://github.com/filerjs/filer/blob/d66114e20c7f0235698d9933dbd90217ba86fa4e/dist/filer.min.js
+

tests/filesystems/images/tiny-fs.0.43.json

@@ -0,0 +1 @@
+{"00000000-0000-0000-0000-000000000000":{"id":"00000000-0000-0000-0000-000000000000","mode":"META","atime":1545098425757,"ctime":1545098425757,"mtime":1545098425757,"rnode":"A63180BA-9BCE-4245-86E8-8613726587CA"},"A63180BA-9BCE-4245-86E8-8613726587CA":{"id":"A63180BA-9BCE-4245-86E8-8613726587CA","mode":"DIRECTORY","size":0,"atime":1545098425770,"ctime":1545098425770,"mtime":1545098425770,"flags":[],"xattrs":{},"nlinks":1,"version":0,"nblocks":1,"data":"3A41160B-1F39-4162-85BD-473F16ABF35F"},"3A41160B-1F39-4162-85BD-473F16ABF35F":{"dir":{"id":"E1634C88-337D-4D1E-9155-81B099BC7E7C","type":"DIRECTORY"},"file.txt":{"id":"DD338D5C-34FF-4AF7-AFBB-C01E8214125F","type":"FILE"}},"E1634C88-337D-4D1E-9155-81B099BC7E7C":{"id":"E1634C88-337D-4D1E-9155-81B099BC7E7C","mode":"DIRECTORY","size":0,"atime":1545098425778,"ctime":1545098425778,"mtime":1545098425778,"flags":[],"xattrs":{},"nlinks":1,"version":0,"nblocks":1,"data":"C8BB5894-9B0C-4CDC-B014-3944FB40DA77"},"C8BB5894-9B0C-4CDC-B014-3944FB40DA77":{"file2.txt":{"id":"EEB56FEC-DABE-48BF-88A5-B9F37723A0BC","type":"FILE"}},"DD338D5C-34FF-4AF7-AFBB-C01E8214125F":{"id":"DD338D5C-34FF-4AF7-AFBB-C01E8214125F","mode":"FILE","size":16,"atime":1545098327877.7542,"ctime":1545098313562.6824,"mtime":1545098313562.6824,"flags":[],"xattrs":{},"nlinks":1,"version":1,"nblocks":1,"data":"BDEE2339-6992-4D8F-AFAA-81813C30592C"},"BDEE2339-6992-4D8F-AFAA-81813C30592C":{"type":"Buffer","data":[84,104,105,115,32,105,115,32,97,32,102,105,108,101,46,10]},"EEB56FEC-DABE-48BF-88A5-B9F37723A0BC":{"id":"EEB56FEC-DABE-48BF-88A5-B9F37723A0BC","mode":"FILE","size":23,"atime":1545098327877.7542,"ctime":1545098313562.6824,"mtime":1545098313562.6824,"flags":[],"xattrs":{},"nlinks":1,"version":1,"nblocks":1,"data":"62262B53-32BC-43F6-983B-4127302C2483"},"62262B53-32BC-43F6-983B-4127302C2483":{"type":"Buffer","data":[84,104,105,115,32,105,115,32,97,32,115,101,99,111,110,100,32,102,105,108,101,46,10]}}

tests/filesystems/migrations/from-0.43.test.js

@@ -0,0 +1,92 @@
+const expect = require('chai').expect;
+const Filer = require('../../../src');
+const SerializableMemoryProvider = require('../../lib/serializable-memory-provider');
+const nodeFs = require('fs');
+const nodePath = require('path');
+
+describe('Migration tests from Filer 0.43 to current', () => {
+
+  let filerFs;
+
+  before(done => {
+    // Let the provider parse the JSON
+    const imagePath = nodePath.resolve(__dirname, '../images/tiny-fs.0.43.json');
+    nodeFs.readFile(imagePath, 'utf8', (err, data) => {
+      if(err) throw err;
+
+      new Filer.FileSystem({
+        provider: new SerializableMemoryProvider('0.43', data)
+      }, (err, fs) => {
+        if(err) throw err;
+
+        filerFs = fs;
+        done();
+      });
+    });
+  });
+
+  it('should have a root directory', done => {
+    filerFs.stat('/', (err, stats) => {
+      if(err) throw err;
+
+      expect(stats).to.be.an('object');
+      expect(stats.isDirectory()).to.be.true;
+      done();
+    });
+  });
+
+  it('should have expected entries in root dir', done => {
+    filerFs.readdir('/', (err, entries) => {
+      if(err) throw err;
+
+      expect(entries).to.be.an('array');
+      expect(entries.length).to.equal(3);
+      expect(entries).to.contain('README.md');
+      expect(entries).to.contain('file.txt');
+      expect(entries).to.contain('dir');
+      done();
+    });
+  });
+
+  it('should have correct contents for /file.txt (read as String)', done => {
+    const fileTxtPath = nodePath.resolve(__dirname, '../tiny-fs/file.txt');
+
+    nodeFs.readFile(fileTxtPath, 'utf8', (err, nodeData) => {
+      if(err) throw err;
+
+      filerFs.readFile('/file.txt', 'utf8', (err, filerData) => {
+        if(err) throw err;
+  
+        expect(nodeData).to.equal(filerData);
+        done();
+      });  
+    });
+  });
+
+  it('should have expected entries in /dir', done => {
+    filerFs.readdir('/dir', (err, entries) => {
+      if(err) throw err;
+
+      expect(entries).to.be.an('array');
+      expect(entries.length).to.equal(1);
+      expect(entries).to.contain('file2.txt');
+      done();
+    });
+  });
+
+  it('should have correct contents for /dir/file2.txt (read as Buffer)', done => {
+    const file2TxtPath = nodePath.resolve(__dirname, '../tiny-fs/dir/file2.txt');
+
+    nodeFs.readFile(file2TxtPath, null, (err, nodeData) => {
+      if(err) throw err;
+
+      filerFs.readFile('/dir/file.txt', null, (err, filerData) => {
+        if(err) throw err;
+  
+        expect(nodeData).to.equal(filerData);
+        done();
+      });  
+    });
+  });
+
+});

tests/filesystems/tiny-fs/dir/file2.txt

@@ -0,0 +1 @@
+This is a second file.

tests/filesystems/tiny-fs/file.txt

@@ -0,0 +1 @@
+This is a file.