Add ERC1167 library (minimal proxy) (#2449)

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>

test/proxy/Clones.behaviour.js

@@ -0,0 +1,150 @@
+const { expectRevert } = require('@openzeppelin/test-helpers');
+
+const { expect } = require('chai');
+
+const DummyImplementation = artifacts.require('DummyImplementation');
+
+module.exports = function shouldBehaveLikeClone (createClone) {
+  before('deploy implementation', async function () {
+    this.implementation = web3.utils.toChecksumAddress((await DummyImplementation.new()).address);
+  });
+
+  const assertProxyInitialization = function ({ value, balance }) {
+    it('initializes the proxy', async function () {
+      const dummy = new DummyImplementation(this.proxy);
+      expect(await dummy.value()).to.be.bignumber.equal(value.toString());
+    });
+
+    it('has expected balance', async function () {
+      expect(await web3.eth.getBalance(this.proxy)).to.be.bignumber.equal(balance.toString());
+    });
+  };
+
+  describe('initialization without parameters', function () {
+    describe('non payable', function () {
+      const expectedInitializedValue = 10;
+      const initializeData = new DummyImplementation('').contract.methods['initializeNonPayable()']().encodeABI();
+
+      describe('when not sending balance', function () {
+        beforeEach('creating proxy', async function () {
+          this.proxy = (
+            await createClone(this.implementation, initializeData)
+          ).address;
+        });
+
+        assertProxyInitialization({
+          value: expectedInitializedValue,
+          balance: 0,
+        });
+      });
+
+      describe('when sending some balance', function () {
+        const value = 10e5;
+
+        it('reverts', async function () {
+          await expectRevert.unspecified(
+            createClone(this.implementation, initializeData, { value }),
+          );
+        });
+      });
+    });
+
+    describe('payable', function () {
+      const expectedInitializedValue = 100;
+      const initializeData = new DummyImplementation('').contract.methods['initializePayable()']().encodeABI();
+
+      describe('when not sending balance', function () {
+        beforeEach('creating proxy', async function () {
+          this.proxy = (
+            await createClone(this.implementation, initializeData)
+          ).address;
+        });
+
+        assertProxyInitialization({
+          value: expectedInitializedValue,
+          balance: 0,
+        });
+      });
+
+      describe('when sending some balance', function () {
+        const value = 10e5;
+
+        beforeEach('creating proxy', async function () {
+          this.proxy = (
+            await createClone(this.implementation, initializeData, { value })
+          ).address;
+        });
+
+        assertProxyInitialization({
+          value: expectedInitializedValue,
+          balance: value,
+        });
+      });
+    });
+  });
+
+  describe('initialization with parameters', function () {
+    describe('non payable', function () {
+      const expectedInitializedValue = 10;
+      const initializeData = new DummyImplementation('').contract
+        .methods.initializeNonPayableWithValue(expectedInitializedValue).encodeABI();
+
+      describe('when not sending balance', function () {
+        beforeEach('creating proxy', async function () {
+          this.proxy = (
+            await createClone(this.implementation, initializeData)
+          ).address;
+        });
+
+        assertProxyInitialization({
+          value: expectedInitializedValue,
+          balance: 0,
+        });
+      });
+
+      describe('when sending some balance', function () {
+        const value = 10e5;
+
+        it('reverts', async function () {
+          await expectRevert.unspecified(
+            createClone(this.implementation, initializeData, { value }),
+          );
+        });
+      });
+    });
+
+    describe('payable', function () {
+      const expectedInitializedValue = 42;
+      const initializeData = new DummyImplementation('').contract
+        .methods.initializePayableWithValue(expectedInitializedValue).encodeABI();
+
+      describe('when not sending balance', function () {
+        beforeEach('creating proxy', async function () {
+          this.proxy = (
+            await createClone(this.implementation, initializeData)
+          ).address;
+        });
+
+        assertProxyInitialization({
+          value: expectedInitializedValue,
+          balance: 0,
+        });
+      });
+
+      describe('when sending some balance', function () {
+        const value = 10e5;
+
+        beforeEach('creating proxy', async function () {
+          this.proxy = (
+            await createClone(this.implementation, initializeData, { value })
+          ).address;
+        });
+
+        assertProxyInitialization({
+          value: expectedInitializedValue,
+          balance: value,
+        });
+      });
+    });
+  });
+};