How to use the interface-ipfs-core.dag function in interface-ipfs-core

{
        name: 'replace',
        reason: 'FIXME Waiting for fix on go-ipfs https://github.com/ipfs/js-ipfs-http-client/pull/307#discussion_r69281789 and https://github.com/ipfs/go-ipfs/issues/2927'
      },
      {
        name: 'should list config profiles',
        reason: 'TODO: Not implemented in go-ipfs'
      },
      {
        name: 'should strip private key from diff output',
        reason: 'TODO: Not implemented in go-ipfs'
      }
    ]
  })

  tests.dag(commonFactory, {
    skip: [
      // dag.tree
      {
        name: 'tree',
        reason: 'TODO vmx 2018-02-22: Currently the tree API is not exposed in go-ipfs'
      },
      // dag.get:
      {
        name: 'should get a dag-pb node local value',
        reason: 'FIXME vmx 2018-02-22: Currently not supported in go-ipfs, it might be possible once https://github.com/ipfs/go-ipfs/issues/4728 is done'
      },
      {
        name: 'should get dag-pb value via dag-cbor node',
        reason: 'FIXME vmx 2018-02-22: Currently not supported in go-ipfs, it might be possible once https://github.com/ipfs/go-ipfs/issues/4728 is done'
      },
      {

})

  tests.bootstrap(defaultCommon, { skip: { reason: 'LITE: not implemented yet' } })

  tests.config(defaultCommon, {
    // skip: [
    //   // config.replace
    //   {
    //     name: 'replace',
    //     reason: 'FIXME Waiting for fix on go-ipfs https://github.com/ipfs/js-ipfs-http-client/pull/307#discussion_r69281789 and https://github.com/ipfs/go-ipfs/issues/2927'
    //   }
    // ]
    skip: { reason: 'LITE: not implemented yet' }
  })

  tests.dag(defaultCommon, {
    // skip: [
    //   // dag.tree
    //   {
    //     name: 'tree',
    //     reason: 'TODO vmx 2018-02-22: Currently the tree API is not exposed in go-ipfs'
    //   },
    //   // dag.get:
    //   {
    //     name: 'should get a dag-pb node local value',
    //     reason: 'FIXME vmx 2018-02-22: Currently not supported in go-ipfs, it might be possible once https://github.com/ipfs/go-ipfs/issues/4728 is done'
    //   },
    //   {
    //     name: 'should get dag-pb value via dag-cbor node',
    //     reason: 'FIXME vmx 2018-02-22: Currently not supported in go-ipfs, it might be possible once https://github.com/ipfs/go-ipfs/issues/4728 is done'
    //   },
    //   {

const overrides = {
    js: {
      ipfsBin: './src/cli/bin.js'
    }
  }
  const commonFactory = createFactory(commonOptions, overrides)

  tests.bitswap(commonFactory)

  tests.block(commonFactory)

  tests.bootstrap(commonFactory)

  tests.config(commonFactory)

  tests.dag(commonFactory, {
    skip: [{
      name: 'should get only a CID, due to resolving locally only',
      reason: 'Local resolve option is not implemented yet'
    }, {
      name: 'tree',
      reason: 'dag.tree is not implemented yet'
    }]
  })

  tests.dht(commonFactory, {
    skip: {
      reason: 'TODO: unskip when DHT is enabled: https://github.com/ipfs/js-ipfs/pull/1994'
    }
  })

  tests.filesRegular(commonFactory, {

const overrides = {
    js: {
      ipfsBin: './src/cli/bin.js'
    }
  }
  const commonFactory = createFactory(commonOptions, overrides)

  tests.bitswap(commonFactory)

  tests.block(commonFactory)

  tests.bootstrap(commonFactory)

  tests.config(commonFactory)

  tests.dag(commonFactory)

  tests.dht(commonFactory, {
    skip: {
      reason: 'TODO: unskip when DHT is enabled: https://github.com/ipfs/js-ipfs/pull/1994'
    }
  })

  tests.filesRegular(commonFactory, {
    skip: isNode ? null : [{
      name: 'addFromStream',
      reason: 'Not designed to run in the browser'
    }, {
      name: 'addFromFs',
      reason: 'Not designed to run in the browser'
    }]
  })

},
    teardown (cb) {
      factory.dismantle(cb)
    }
  }
}

tests.bitswap(defaultCommonFactory, { skip: true })

tests.block(defaultCommonFactory)

tests.bootstrap(defaultCommonFactory)

tests.config(defaultCommonFactory)

tests.dag(defaultCommonFactory)

tests.dht(defaultCommonFactory, {
  skip: { reason: 'TODO: DHT is not implemented in js-ipfs yet!' }
})

tests.files(defaultCommonFactory, {
  skip: [
    {
      name: 'should add pull stream (promised)',
      reason: 'https://github.com/ipfs/js-ipfs/issues/1574'
    },
    {
      name: 'should stat file',
      reason: 'https://github.com/ipfs/interface-ipfs-core/pull/365'
    },
    {

if (err) {
            return cb(err)
          }

          nodes.push(_ipfsd)
          cb(null, _ipfsd.api)
        })
      }
    })
  },
  teardown: function (callback) {
    parallel(nodes.map((node) => (cb) => node.stop(cb)), callback)
  }
}

test.dag(common)

: { type: 'proc', exec: require('ipfs') }

const common = {
  setup (cb) {
    factory = new IpfsFactory(factoryOpts)
    cb(null, factory)
  },
  teardown (cb) {
    factory.dismantle(cb)
  }
}

test.block(common)
test.bootstrap(common)
test.config(common)
test.dag(common)
test.dht(common)
test.files(common)
test.filesMFS(common)
test.key(common)
test.miscellaneous(common)
test.object(common)
test.pin(common)
test.ping(common)
test.pubsub(common)
test.repo(common)
test.stats(common)
test.swarm(common)