diff --git a/contracts/0.8.9/test_helpers/oracle/HashConsensusTimeTravellable.sol b/contracts/0.8.9/test_helpers/oracle/HashConsensusTimeTravellable.sol
index cb7cda2f5..238cc9506 100644
--- a/contracts/0.8.9/test_helpers/oracle/HashConsensusTimeTravellable.sol
+++ b/contracts/0.8.9/test_helpers/oracle/HashConsensusTimeTravellable.sol
@@ -72,4 +72,12 @@ contract HashConsensusTimeTravellable is HashConsensus {
     function advanceTimeByEpochs(uint256 numEpochs) external {
         _time += SECONDS_PER_SLOT * SLOTS_PER_EPOCH * numEpochs;
     }
+
+    function getReportProcessor() external view returns (address) {
+        return _reportProcessor;
+    }
+
+    function getConsensusVersion() external view returns (uint256) {
+        return _getConsensusVersion();
+    }
 }
diff --git a/test/0.8.9/oracle/hash-consensus-deploy.test.js b/test/0.8.9/oracle/hash-consensus-deploy.test.js
index a9c66f89b..5aa0b7a97 100644
--- a/test/0.8.9/oracle/hash-consensus-deploy.test.js
+++ b/test/0.8.9/oracle/hash-consensus-deploy.test.js
@@ -34,6 +34,7 @@ const CONSENSUS_VERSION = 1
 
 async function deployHashConsensus(admin, {
   reportProcessor = null,
+  reportProcessorAddress = null,
   slotsPerEpoch = SLOTS_PER_EPOCH,
   secondsPerSlot = SECONDS_PER_SLOT,
   genesisTime = GENESIS_TIME,
@@ -41,7 +42,7 @@ async function deployHashConsensus(admin, {
   fastLaneLengthSlots = 0,
   initialEpoch = 1
 } = {}) {
-  if (!reportProcessor) {
+  if (!reportProcessor && !reportProcessorAddress) {
     reportProcessor = await MockReportProcessor.new(CONSENSUS_VERSION, { from: admin })
   }
 
@@ -53,7 +54,7 @@ async function deployHashConsensus(admin, {
     initialEpoch,
     fastLaneLengthSlots,
     admin,
-    reportProcessor.address,
+    reportProcessorAddress || reportProcessor.address,
     { from: admin }
   )
 
diff --git a/test/0.8.9/oracle/hash-consensus-report-processor.test.js b/test/0.8.9/oracle/hash-consensus-report-processor.test.js
new file mode 100644
index 000000000..25790e55b
--- /dev/null
+++ b/test/0.8.9/oracle/hash-consensus-report-processor.test.js
@@ -0,0 +1,120 @@
+const { assert, getAccessControlMessage } = require('../../helpers/assert')
+const { toNum } = require('../../helpers/utils')
+const { assertBn, assertEvent, assertAmountOfEvents } = require('@aragon/contract-helpers-test/src/asserts')
+const { assertRevert } = require('../../helpers/assertThrow')
+const { ZERO_ADDRESS, bn } = require('@aragon/contract-helpers-test')
+
+const {
+  SLOTS_PER_EPOCH, SECONDS_PER_SLOT, GENESIS_TIME, EPOCHS_PER_FRAME,
+  SECONDS_PER_EPOCH, SECONDS_PER_FRAME, SLOTS_PER_FRAME,
+  computeSlotAt, computeEpochAt, computeEpochFirstSlot, computeEpochFirstSlotAt,
+  computeTimestampAtSlot, computeTimestampAtEpoch,
+  ZERO_HASH, HASH_1, HASH_2, HASH_3, HASH_4, HASH_5,
+  CONSENSUS_VERSION, deployHashConsensus} = require('./hash-consensus-deploy.test')
+
+const CONSENSUS_VERSION_2 = 2
+
+const HashConsensus = artifacts.require('HashConsensusTimeTravellable')
+const MockReportProcessor = artifacts.require('MockReportProcessor')
+
+contract('HashConsensus', ([admin, member1, member2, member3, member4, member5, stranger]) => {
+  let consensus
+  let reportProcessor
+
+  context('Report Processor', () => {
+    let consensus
+    let reportProcessor1
+    let reportProcessor2
+
+    const deploy = async (options = undefined) => {
+      const deployed = await deployHashConsensus(admin, options)
+      consensus = deployed.consensus
+      reportProcessor1 = deployed.reportProcessor
+      reportProcessor2 = await MockReportProcessor.new(CONSENSUS_VERSION_2, { from: admin })
+    }
+
+    const deployProcessorZero = async () => {
+      await deploy({ reportProcessorAddress: ZERO_ADDRESS })
+    }
+
+    context('without initial processor', () => {
+      before(deployProcessorZero)
+
+      it('has no initial processor', async () => {
+        assert.addressEqual(
+          await consensus.getReportProcessor(),
+          ZERO_ADDRESS,
+          'there should be zero address for processor',
+        )
+      })
+
+      it('consensus version equals zero', async () => {
+        assert.equal(
+          await consensus.getConsensusVersion(),
+          0,
+        )
+      })
+    })
+
+    context('with initial processor', () => {
+      before(deploy)
+
+      it('properly set initial report processor', async () => {
+        assert.addressEqual(
+          await consensus.getReportProcessor(),
+          reportProcessor1.address,
+          'processor address differs',
+        )
+      })
+
+      context('method setReportProcessor', () => {
+        before(deploy)
+
+        it('checks next processor is not zero', async () => {
+          await assertRevert(
+            consensus.setReportProcessor(ZERO_ADDRESS),
+            'AddressCannotBeZero()',
+          )
+        })
+
+        it('checks next processor is not the same as previous', async () => {
+          await assertRevert(
+            consensus.setReportProcessor(reportProcessor1.address),
+            'NewProcessorCannotBeTheSame()',
+          )
+        })
+
+        it('checks tx sender for MANAGE_REPORT_PROCESSOR_ROLE', async () => {
+          await assertRevert(
+            consensus.setReportProcessor(reportProcessor2.address, {from: stranger}),
+            getAccessControlMessage(stranger.toLowerCase(), await consensus.MANAGE_REPORT_PROCESSOR_ROLE())
+          )
+        })
+
+        it('emits ReportProcessorSet event', async () => {
+          const tx = await consensus.setReportProcessor(reportProcessor2.address)
+          assertEvent(tx, 'ReportProcessorSet', {expectedArgs: {processor: reportProcessor2.address, prevProcessor: reportProcessor1.address}})
+        })
+      })
+
+      context('consensus version', () => {
+        beforeEach(deploy)
+
+        it('equals to version of initial processor', async () => {
+          assert.equal(
+            await consensus.getConsensusVersion(),
+            CONSENSUS_VERSION,
+          )
+        })
+
+        it('equals to new processor version after it was changed', async () => {
+          await consensus.setReportProcessor(reportProcessor2.address)
+          assert.equal(
+            await consensus.getConsensusVersion(),
+            CONSENSUS_VERSION_2,
+          )
+        })
+      })
+    })
+  })
+})
diff --git a/test/helpers/assert.js b/test/helpers/assert.js
index 3c312a3aa..6976856a9 100644
--- a/test/helpers/assert.js
+++ b/test/helpers/assert.js
@@ -55,6 +55,10 @@ chai.util.addMethod(chai.assert, 'notEquals', function (actual, expected, errorM
   this.notEqual(actual.toString(), expected.toString(), `${errorMsg || ""} expected ${expected.toString()} to not equal ${actual.toString()}`)
 })
 
+chai.util.addMethod(chai.assert, 'addressEqual', function (actual, expected, errorMsg) {
+  assert.equal(toChecksumAddress(actual), toChecksumAddress(expected), errorMsg)
+})
+
 chai.util.addMethod(chai.assert, 'revertsWithCustomError', async function (receipt, reason) {
   try {
     await receipt
@@ -104,4 +108,8 @@ function normalizeArg(arg) {
   return arg
 }
 
-module.exports = { assert: chai.assert }
+function getAccessControlMessage(address, role) {
+  return `AccessControl: account ${address} is missing role ${role}`
+}
+
+module.exports = { assert: chai.assert, getAccessControlMessage }