test: interop testing and bug fixing

Author: daviddias

src/util.js

@@ -13,12 +13,19 @@ const resolver = require('./resolver')
 const CID_CBOR_TAG = 42
 
 function tagCID (cid) {
-  return new cbor.Tagged(CID_CBOR_TAG, cid)
+  return new cbor.Tagged(CID_CBOR_TAG, Buffer.concat([
+    new Buffer('00', 'hex'), // thanks jdag
+    cid
+  ]))
 }
 
 const decoder = new cbor.Decoder({
   tags: {
-    [CID_CBOR_TAG]: (val) => ({'/': val})
+    [CID_CBOR_TAG]: (val) => {
+      // remove that 0
+      val = val.slice(1)
+      return {'/': val}
+    }
   }
 })
 

test/fixtures/README.md

@@ -0,0 +1 @@
+Extracted from: https://github.com/ipfs/go-ipld-cbor/tree/master/test_objects

test/fixtures/array-link.cbor

@@ -0,0 +1 @@
+[{"/":"QmRgutAxd8t7oGkSm4wmeuByG6M51wcTso6cubDdQtuEfL"}]

test/fixtures/array-link.json

@@ -0,0 +1 @@
+�

test/fixtures/empty-array.cbor

@@ -0,0 +1 @@
+[]

test/fixtures/empty-array.json

@@ -0,0 +1 @@
+�

test/fixtures/empty-obj.cbor

@@ -0,0 +1 @@
+{}

test/fixtures/empty-obj.json

@@ -0,0 +1,8 @@
+{
+	"array-link": {"/":"zdpuAsZ8roJvCazJFXUnSULspbXfxrLkUkNxy6SToaiDpEiap"},
+	"empty-array": {"/":"zdpuAtQy7GSHNcZxdBfmtowdL1d2WAFjJBwb6WAEfFJ6T4Gbi"},
+	"empty-obj": {"/":"zdpuAyTBnYSugBZhqJuLsNpzjmAjSmxDqBbtAqXMtsvxiN2v3"},
+	"foo": {"/":"zdpuAtu6ZgHLyiGZAX743EurWhSr9ixbVbrtFaxbr8Z8Q16gW"},
+	"obj-with-link": {"/":"zdpuAp1WRqfq8w953Dep9pz7nNYUbQPKX9duW71G5C4doiPFK"},
+	"obj-no-link": {"/":"zdpuAtHFXfzgXBSoq5GSn3NTrK2ToYwj4tRZiMTfe2mVApYLa"}
+}

test/fixtures/expected.json

@@ -0,0 +1,15 @@
+{
+	"foo": "bar",
+	"cats": [
+		{"/": "QmRgutAxd8t7oGkSm4wmeuByG6M51wcTso6cubDdQtuEfL"},
+		{
+			"something": "interesting"
+		},
+		[
+			"fish",
+			{"/": "QmRgutAxd8t7oGkSm4wmeuByG6M51wcTso6cubDdQtuEfL"},
+			9
+		]
+	],
+	"other": {"/": "QmRgutAxd8t7oGkSm4wmeuByG6M51wcTso6cubDdQtuEfL"}
+}

test/fixtures/foo.cbor

@@ -0,0 +1 @@
+�isassafrashand cats

test/fixtures/foo.json

@@ -0,0 +1,3 @@
+{
+	"sassafras": "and cats"
+}

test/fixtures/obj-no-link.cbor

@@ -0,0 +1,3 @@
+{
+	"foo": {"/":"QmRgutAxd8t7oGkSm4wmeuByG6M51wcTso6cubDdQtuEfL"}
+}

test/fixtures/obj-no-link.json

@@ -0,0 +1,170 @@
+/* eslint-env mocha */
+/* eslint max-nested-callbacks: ["error", 8] */
+
+'use strict'
+
+const expect = require('chai').expect
+const dagCBOR = require('../src')
+const loadFixture = require('aegir/fixtures')
+const bs58 = require('bs58')
+const isNode = require('detect-node')
+
+const arrayLinkCBOR = loadFixture(__dirname, '/fixtures/array-link.cbor')
+const arrayLinkJSON = require('./fixtures/array-link.json')
+
+const emptyArrayCBOR = loadFixture(__dirname, '/fixtures/empty-array.cbor')
+const emptyArrayJSON = require('./fixtures/empty-array.json')
+
+const emptyObjCBOR = loadFixture(__dirname, '/fixtures/empty-obj.cbor')
+const emptyObjJSON = require('./fixtures/empty-obj.json')
+
+const fooCBOR = loadFixture(__dirname, '/fixtures/foo.cbor')
+const fooJSON = require('./fixtures/foo.json')
+
+const objNoLinkCBOR = loadFixture(__dirname, '/fixtures/obj-no-link.cbor')
+const objNoLinkJSON = require('./fixtures/obj-no-link.json')
+
+const objWithLinkCBOR = loadFixture(__dirname, '/fixtures/obj-with-link.cbor')
+// const objWithLinkJSON = require('./fixtures/obj-with-link.json')
+
+const expectedCIDs = require('./fixtures/expected.json')
+
+describe.only('dag-cbor interop tests', () => {
+  // the fixtures feature needs to be fixed
+  if (!isNode) { return }
+
+  describe('deserialize and compare', () => {
+    it('array-link', (done) => {
+      dagCBOR.util.deserialize(arrayLinkCBOR, (err, node) => {
+        expect(err).to.not.exist
+        // the JSON version that gets out of go-ipfs stringifies the CID
+        const bs58Str = bs58.encode(node[0]['/'])
+
+        node[0]['/'] = bs58Str
+        expect(node).to.eql(arrayLinkJSON)
+
+        // put it back to bytes
+        node[0]['/'] = bs58.decode(arrayLinkJSON[0]['/'])
+
+        dagCBOR.util.cid(node, (err, cid) => {
+          expect(err).to.not.exist
+          const cidStr = cid.toBaseEncodedString()
+          expect(cidStr).to.eql(expectedCIDs['array-link']['/'])
+          done()
+        })
+      })
+    })
+
+    it('empty-array', (done) => {
+      dagCBOR.util.deserialize(emptyArrayCBOR, (err, node) => {
+        expect(err).to.not.exist
+        expect(node).to.eql(emptyArrayJSON)
+
+        dagCBOR.util.cid(node, (err, cid) => {
+          expect(err).to.not.exist
+          const cidStr = cid.toBaseEncodedString()
+          expect(cidStr).to.eql(expectedCIDs['empty-array']['/'])
+          done()
+        })
+      })
+    })
+
+    it('empty-obj', (done) => {
+      dagCBOR.util.deserialize(emptyObjCBOR, (err, node) => {
+        expect(err).to.not.exist
+        expect(node).to.eql(emptyObjJSON)
+
+        dagCBOR.util.cid(node, (err, cid) => {
+          expect(err).to.not.exist
+          const cidStr = cid.toBaseEncodedString()
+          expect(cidStr).to.eql(expectedCIDs['empty-obj']['/'])
+          done()
+        })
+      })
+    })
+
+    it.skip('foo', (done) => {
+      dagCBOR.util.deserialize(fooCBOR, (err, node) => {
+        expect(err).to.not.exist
+        expect(node).to.eql(fooJSON)
+
+        dagCBOR.util.cid(node, (err, cid) => {
+          expect(err).to.not.exist
+          const cidStr = cid.toBaseEncodedString()
+          expect(cidStr).to.eql(expectedCIDs['foo']['/'])
+          done()
+        })
+      })
+    })
+
+    it('obj-no-link', (done) => {
+      dagCBOR.util.deserialize(objNoLinkCBOR, (err, node) => {
+        expect(err).to.not.exist
+        expect(node).to.eql(objNoLinkJSON)
+
+        dagCBOR.util.cid(node, (err, cid) => {
+          expect(err).to.not.exist
+          const cidStr = cid.toBaseEncodedString()
+          expect(cidStr).to.eql(expectedCIDs['obj-no-link']['/'])
+          done()
+        })
+      })
+    })
+
+    it('obj-with-link', (done) => {
+      if (!isNode) { done() }
+
+      dagCBOR.util.deserialize(objWithLinkCBOR, (err, node) => {
+        expect(err).to.not.exist
+
+        dagCBOR.util.cid(node, (err, cid) => {
+          expect(err).to.not.exist
+          const cidStr = cid.toBaseEncodedString()
+          expect(cidStr).to.eql(expectedCIDs['obj-with-link']['/'])
+          done()
+        })
+      })
+    })
+  })
+
+  describe('serialise and compare', () => {
+    it('array-link', (done) => {
+      arrayLinkJSON[0]['/'] = bs58.decode(arrayLinkJSON[0]['/'])
+
+      dagCBOR.util.serialize(arrayLinkJSON, (err, serialized) => {
+        expect(err).to.not.exist
+
+        expect(serialized).to.eql(arrayLinkCBOR)
+        done()
+      })
+    })
+
+    it('empty-array', (done) => {
+      dagCBOR.util.serialize(emptyArrayJSON, (err, serialized) => {
+        expect(err).to.not.exist
+        expect(serialized).to.eql(emptyArrayCBOR)
+        done()
+      })
+    })
+
+    it('empty-obj', (done) => {
+      dagCBOR.util.serialize(emptyObjJSON, (err, serialized) => {
+        expect(err).to.not.exist
+        expect(serialized).to.eql(emptyObjCBOR)
+        done()
+      })
+    })
+
+    it.skip('foo', (done) => {})
+
+    it('obj-no-link', (done) => {
+      dagCBOR.util.serialize(objNoLinkJSON, (err, serialized) => {
+        expect(err).to.not.exist
+        expect(serialized).to.eql(objNoLinkCBOR)
+        done()
+      })
+    })
+
+    it.skip('obj-with-link', (done) => {})
+  })
+})