Add makeInterfaceId.ERC165.

README.md

@@ -128,7 +128,8 @@ Same as `inLogs`, but for events emitted in an arbitrary transaction (of hash `t
 
 
 ### makeInterfaceId (interfaces = [])
-Calculates the [EIP 165](https://eips.ethereum.org/EIPS/eip-165) interface ID of a contract, given a series of function signatures.
+#### ERC165
+Calculates the [ERC165](https://eips.ethereum.org/EIPS/eip-165) interface ID of a contract, given a series of function signatures.
 
 ---
 

src/makeInterfaceId.js

@@ -1,6 +1,6 @@
-const INTERFACE_ID_LENGTH = 4;
+function ERC165 (interfaces = []) {
+  const INTERFACE_ID_LENGTH = 4;
 
-function makeInterfaceId (interfaces = []) {
   const interfaceIdBuffer = interfaces
     .map(methodSignature => web3.utils.soliditySha3(methodSignature)) // keccak256
     .map(h =>
@@ -18,4 +18,11 @@ function makeInterfaceId (interfaces = []) {
   return `0x${interfaceIdBuffer.toString('hex')}`;
 }
 
-module.exports = makeInterfaceId;
+function ERC1820 (inteface) {
+
+}
+
+module.exports = {
+  ERC165,
+  ERC1820,
+};

test/src/makeInterfaceId.test.js

@@ -5,15 +5,17 @@ const makeInterfaceId = require('../../src/makeInterfaceId');
 const OwnableInterfaceId = artifacts.require('OwnableInterfaceId');
 
 describe('makeInterfaceId', function () {
-  it('calculates the EIP165 interface id from function signatures', async function () {
-    const calculator = await OwnableInterfaceId.new();
-    const ownableId = await calculator.getInterfaceId();
+  describe('ERC165', function () {
+    it('calculates the interface id from function signatures', async function () {
+      const calculator = await OwnableInterfaceId.new();
+      const ownableId = await calculator.getInterfaceId();
 
-    expect(makeInterfaceId([
-      'owner()',
-      'isOwner()',
-      'renounceOwnership()',
-      'transferOwnership(address)',
-    ])).to.equal(ownableId);
+      expect(makeInterfaceId.ERC165([
+        'owner()',
+        'isOwner()',
+        'renounceOwnership()',
+        'transferOwnership(address)',
+      ])).to.equal(ownableId);
+    });
   });
 });