First test helpers tests (#1369)

* Removed unused advanceToBlock.

* Added advanceBlock tests.

* Fixed advanceToBlock tests.

* Added single argument tests.

* Finished inLogs tests.

* Fixed linter errors.

* Fixed linter errors.

(cherry picked from commit 9f822906b8)

test/helpers/advanceToBlock.js

@@ -10,18 +10,6 @@ function advanceBlock () {
   });
 }
 
-// Advances the block number so that the last mined block is `number`.
-async function advanceToBlock (number) {
-  if (web3.eth.blockNumber > number) {
-    throw Error(`block number ${number} is in the past (current is ${web3.eth.blockNumber})`);
-  }
-
-  while (web3.eth.blockNumber < number) {
-    await advanceBlock();
-  }
-}
-
 module.exports = {
   advanceBlock,
-  advanceToBlock,
 };