Merge branch 'v2-prototype' into refactor/check-revert-reasons

* v2-prototype: (48 commits)
  Fix typos in comments
  Add modifier and tests for removeAuthorizedAddressAtIndex
  Update and add tests
  Change removeAuthorizedAddress => removeAuthorizedAddressAtIndex
  Move isFunctionRemoveAuthorizedAddress to test
  Fix usage of `popLastByte`
  Fix LibBytes is a library
  Remove `areBytesEqual`
  Fix usage of `contentAddress()`
  Clean low bits in bytes4
  Clean high bits in address
  Refactor LibBytes.readBytes4 for consistency
  Fix LibBytes.equals
  Add trailing garbage testcase for LibBytes.equals
  Rename bytes.equals
  Add slice and sliceDestructive
  Rename bytes.rawAddress and add bytes.contentAddress
  Rename read/writeBytesWithLength
  Using LibBytes for bytes
  Make LibBytes a library
  ...

# Conflicts:
#	packages/contracts/src/contracts/current/utils/Ownable/Ownable.sol
#	packages/contracts/test/libraries/lib_bytes.ts

2 files changed, 69 insertions, 1 deletions

diff --git a/packages/contracts/test/asset_proxy/authorizable.ts b/packages/contracts/test/asset_proxy/authorizable.ts
index a317f217a..24ec73a64 100644
--- a/packages/contracts/test/asset_proxy/authorizable.ts
+++ b/packages/contracts/test/asset_proxy/authorizable.ts
@@ -1,4 +1,5 @@
 import { BlockchainLifecycle } from '@0xproject/dev-utils';
+import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
 
 import { MixinAuthorizableContract } from '../../src/generated_contract_wrappers/mixin_authorizable';
@@ -107,6 +108,74 @@ describe('Authorizable', () => {
         });
     });
 
+    describe('removeAuthorizedAddressAtIndex', () => {
+        it('should throw if not called by owner', async () => {
+            await web3Wrapper.awaitTransactionSuccessAsync(
+                await authorizable.addAuthorizedAddress.sendTransactionAsync(address, { from: owner }),
+                constants.AWAIT_TRANSACTION_MINED_MS,
+            );
+            const index = new BigNumber(0);
+            return expectRevertOrAlwaysFailingTransactionAsync(
+                authorizable.removeAuthorizedAddressAtIndex.sendTransactionAsync(address, index, {
+                    from: notOwner,
+                }),
+            );
+        });
+        it('should throw if index is >= authorities.length', async () => {
+            await web3Wrapper.awaitTransactionSuccessAsync(
+                await authorizable.addAuthorizedAddress.sendTransactionAsync(address, { from: owner }),
+                constants.AWAIT_TRANSACTION_MINED_MS,
+            );
+            const index = new BigNumber(1);
+            return expectRevertOrAlwaysFailingTransactionAsync(
+                authorizable.removeAuthorizedAddressAtIndex.sendTransactionAsync(address, index, {
+                    from: owner,
+                }),
+            );
+        });
+        it('should throw if owner attempts to remove an address that is not authorized', async () => {
+            const index = new BigNumber(0);
+            return expectRevertOrAlwaysFailingTransactionAsync(
+                authorizable.removeAuthorizedAddressAtIndex.sendTransactionAsync(address, index, {
+                    from: owner,
+                }),
+            );
+        });
+        it('should throw if address at index does not match target', async () => {
+            const address1 = address;
+            const address2 = notOwner;
+            await web3Wrapper.awaitTransactionSuccessAsync(
+                await authorizable.addAuthorizedAddress.sendTransactionAsync(address1, { from: owner }),
+                constants.AWAIT_TRANSACTION_MINED_MS,
+            );
+            await web3Wrapper.awaitTransactionSuccessAsync(
+                await authorizable.addAuthorizedAddress.sendTransactionAsync(address2, { from: owner }),
+                constants.AWAIT_TRANSACTION_MINED_MS,
+            );
+            const address1Index = new BigNumber(0);
+            return expectRevertOrAlwaysFailingTransactionAsync(
+                authorizable.removeAuthorizedAddressAtIndex.sendTransactionAsync(address2, address1Index, {
+                    from: owner,
+                }),
+            );
+        });
+        it('should allow owner to remove an authorized address', async () => {
+            await web3Wrapper.awaitTransactionSuccessAsync(
+                await authorizable.addAuthorizedAddress.sendTransactionAsync(address, { from: owner }),
+                constants.AWAIT_TRANSACTION_MINED_MS,
+            );
+            const index = new BigNumber(0);
+            await web3Wrapper.awaitTransactionSuccessAsync(
+                await authorizable.removeAuthorizedAddressAtIndex.sendTransactionAsync(address, index, {
+                    from: owner,
+                }),
+                constants.AWAIT_TRANSACTION_MINED_MS,
+            );
+            const isAuthorized = await authorizable.authorized.callAsync(address);
+            expect(isAuthorized).to.be.false();
+        });
+    });
+
     describe('getAuthorizedAddresses', () => {
         it('should return all authorized addresses', async () => {
             const initial = await authorizable.getAuthorizedAddresses.callAsync();
diff --git a/packages/contracts/test/asset_proxy/decoder.ts b/packages/contracts/test/asset_proxy/decoder.ts
index 875d55daa..98d18aa38 100644
--- a/packages/contracts/test/asset_proxy/decoder.ts
+++ b/packages/contracts/test/asset_proxy/decoder.ts
@@ -27,7 +27,6 @@ describe('TestAssetDataDecoders', () => {
         // Setup accounts & addresses
         const accounts = await web3Wrapper.getAvailableAddressesAsync();
         testAddress = accounts[0];
-        // Deploy TestLibMem
         testAssetProxyDecoder = await TestAssetDataDecodersContract.deployFrom0xArtifactAsync(
             artifacts.TestAssetDataDecoders,
             provider,