Test returned addresses should be either same case as input addresses or checksum addresses (snapshot-labs#304)

Author: ChaituVR

test/index.spec.ts

@@ -1,4 +1,5 @@
 const { JsonRpcProvider } = require('@ethersproject/providers');
+const { getAddress } = require('@ethersproject/address');
 const snapshot = require('../');
 const networks = require('../src/networks.json');
 const addresses = require('./addresses.json');
@@ -82,6 +83,15 @@ describe(`\nTest strategy "${strategy}"`, () => {
     const blockNumber = await snapshot.utils.getBlockNumber(provider);
     expect(example.snapshot).toBeLessThanOrEqual(blockNumber);
   });
+
+  it('Returned addresses should be either same case as input addresses or checksum addresses', () => {
+    expect(
+      Object.keys(scores[0]).every(
+        (address) =>
+          example.addresses.includes(address) || getAddress(address) === address
+      )
+    ).toBe(true);
+  });
 });
 
 describe(`\nTest strategy "${strategy}" with latest snapshot`, () => {