chore: adds tests for reading slices of mfs files

License: MIT
Signed-off-by: achingbrain <[email protected]>

Author: achingbrain

test/read.spec.js

@@ -6,6 +6,7 @@ chai.use(require('dirty-chai'))
 const expect = chai.expect
 const path = require('path')
 const loadFixture = require('aegir/fixtures')
+const bufferStream = require('./fixtures/buffer-stream')
 
 const {
   createMfs
@@ -40,15 +41,59 @@ describe('read', function () {
       })
   })
 
-  it.skip('reads a file with an offset', () => {
+  it('reads a file with an offset', () => {
+    const path = `/some-file-${Math.random()}.txt`
+    let data = Buffer.alloc(0)
+    const offset = 10
 
+    return mfs.write(path, bufferStream(100, {
+      collector: (bytes) => {
+        data = Buffer.concat([data, bytes])
+      }
+    }), {
+      create: true
+    })
+      .then(() => mfs.read(path, {
+        offset
+      }))
+      .then((buffer) => expect(buffer).to.deep.equal(data.slice(offset)))
   })
 
-  it.skip('reads a file with a length', () => {
+  it('reads a file with a length', () => {
+    const path = `/some-file-${Math.random()}.txt`
+    let data = Buffer.alloc(0)
+    const length = 10
 
+    return mfs.write(path, bufferStream(100, {
+      collector: (bytes) => {
+        data = Buffer.concat([data, bytes])
+      }
+    }), {
+      create: true
+    })
+      .then(() => mfs.read(path, {
+        length
+      }))
+      .then((buffer) => expect(buffer).to.deep.equal(data.slice(0, length)))
   })
 
-  it.skip('reads a file with an offset and a length', () => {
+  it('reads a file with an offset and a length', () => {
+    const path = `/some-file-${Math.random()}.txt`
+    let data = Buffer.alloc(0)
+    const offset = 10
+    const length = 10
 
+    return mfs.write(path, bufferStream(100, {
+      collector: (bytes) => {
+        data = Buffer.concat([data, bytes])
+      }
+    }), {
+      create: true
+    })
+      .then(() => mfs.read(path, {
+        offset,
+        length
+      }))
+      .then((buffer) => expect(buffer).to.deep.equal(data.slice(offset, offset + length)))
   })
 })