Merge pull request #184 from 0xs34n/feature/checksum-addresses

Author: janek26

.gitignore

@@ -5,3 +5,4 @@ npm-debug.log
 .DS_Store
 .eslintcache
 coverage
+yarn.lock

__tests__/utils/address.test.ts

@@ -1,4 +1,9 @@
-import { addAddressPadding, validateAndParseAddress } from '../../src/utils/address';
+import {
+  addAddressPadding,
+  getChecksumAddress,
+  validateAndParseAddress,
+  validateChecksumAddress,
+} from '../../src/utils/address';
 // import { addHexPrefix, removeHexPrefix } from '../../src/utils/encode';
 
 describe('validateAndParseAddress', () => {
@@ -14,3 +19,27 @@ describe('validateAndParseAddress', () => {
     return expect(validateAndParseAddress(addr)).toEqual(`${addAddressPadding(addr)}`);
   });
 });
+
+describe('address checksums', () => {
+  test('should be able to calculate checksum address', () => {
+    const checksumAddress = getChecksumAddress(
+      '0x2fd23d9182193775423497fc0c472e156c57c69e4089a1967fb288a2d84e914'
+    );
+    expect(checksumAddress).toEqual(
+      '0x02FD23D9182193775423497Fc0c472E156C57C69E4089a1967fb288a2D84e914'
+    );
+  });
+  test('should be able to verify checksum address', () => {
+    const isValid = validateChecksumAddress(
+      '0x02FD23D9182193775423497Fc0c472E156C57C69E4089a1967fb288a2D84e914'
+    );
+    expect(isValid).toEqual(true);
+  });
+  test('calculated checksum address should validate', () => {
+    const checksumAddress = getChecksumAddress(
+      '0x26cb0b500d175111341fabb53bf7fa4f5a0b8c5cbb31896cec1e8383a5edda8'
+    );
+    const isValid = validateChecksumAddress(checksumAddress);
+    expect(isValid).toEqual(true);
+  });
+});