Testing past events

src/tests/e2e/loom-provider-web3-pastevents.ts

@@ -0,0 +1,124 @@
+import test from 'tape'
+
+import { LocalAddress, CryptoUtils } from '../../index'
+import { createTestClient, waitForMillisecondsAsync } from '../helpers'
+
+import { LoomProvider } from '../../loom-provider'
+import { deployContract } from '../evm-helpers'
+
+// import Web3 from 'web3'
+const Web3 = require('web3')
+
+/**
+ * Requires the SimpleStore solidity contract deployed on a loomchain.
+ * go-loom/examples/plugins/evmexample/contract/SimpleStore.sol
+ *
+ * pragma solidity ^0.4.22;
+ *
+ * contract SimpleStore {
+ *   uint value;
+ *   constructor() public {
+ *       value = 10;
+ *   }
+ *
+ *   event NewValueSet(uint indexed _value);
+ *
+ *   function set(uint _value) public {
+ *     value = _value;
+ *     emit NewValueSet(value);
+ *   }
+ *
+ *   function get() public view returns (uint) {
+ *     return value;
+ *   }
+ * }
+ *
+ *
+ */
+
+const newContractAndClient = async () => {
+  const privKey = CryptoUtils.generatePrivateKey()
+  const client = createTestClient()
+  const from = LocalAddress.fromPublicKey(CryptoUtils.publicKeyFromPrivateKey(privKey)).toString()
+  const loomProvider = new LoomProvider(client, privKey)
+  const web3 = new Web3(loomProvider)
+
+  const contractData =
+    '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'
+
+  const ABI = [
+    {
+      constant: false,
+      inputs: [{ name: '_value', type: 'uint256' }],
+      name: 'set',
+      outputs: [],
+      payable: false,
+      stateMutability: 'nonpayable',
+      type: 'function'
+    },
+    {
+      constant: true,
+      inputs: [],
+      name: 'get',
+      outputs: [{ name: '', type: 'uint256' }],
+      payable: false,
+      stateMutability: 'view',
+      type: 'function'
+    },
+    { inputs: [], payable: false, stateMutability: 'nonpayable', type: 'constructor' },
+    {
+      anonymous: false,
+      inputs: [{ indexed: true, name: '_value', type: 'uint256' }],
+      name: 'NewValueSet',
+      type: 'event'
+    }
+  ]
+
+  const result = await deployContract(loomProvider, contractData)
+
+  const contract = new web3.eth.Contract(ABI, result.contractAddress, { from })
+
+  return {
+    contract,
+    client
+  }
+}
+
+test('LoomProvider + Web3 past events', async t => {
+  try {
+    const { contract, client } = await newContractAndClient()
+    const numEvents = 5
+
+    for (let v = 1; v <= numEvents; v++) {
+      const tx = await contract.methods.set(v).send()
+      t.equal(tx.status, true, `SimpleStore.set should return correct status for ${v}`)
+
+      const resultOfGet = await contract.methods.get().call()
+      t.equal(+resultOfGet, v, `SimpleStore.get should return correct value for ${v}`)
+    }
+
+    await waitForMillisecondsAsync(2000)
+
+    contract.getPastEvents(
+      {
+        fromBlock: 0,
+        toBlock: 'latest'
+      },
+      (_err: Error, events: any) => {
+        t.assert(
+          events.every((event: any) => event.event === 'NewValueSet'),
+          `NewValueSet in ${numEvents} events`
+        )
+        t.equal(events.length, numEvents, `Should have ${numEvents} events registered`)
+      }
+    )
+
+    await waitForMillisecondsAsync(2000)
+
+    client.disconnect()
+  } catch (err) {
+    console.log(err)
+  }
+
+  t.end()
+})

src/tests/e2e_tests.ts

@@ -14,4 +14,5 @@ import './e2e/loom-provider-eth-filters'
 import './e2e/loom-provider-eth-filters-2'
 import './e2e/loom-provider-subscribe'
 import './e2e/coin-tests'
-import './e2e/dpos-tests'
+import './e2e/dpos-tests'
+import './e2e/loom-provider-web3-pastevents'