Added Proper Example Tests

test/TestSimpleStorage.sol

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+pragma solidity ^0.4.2;
+
+import "truffle/Assert.sol";
+import "truffle/DeployedAddresses.sol";
+import "../contracts/SimpleStorage.sol";
+
+contract TestSimpleStorage {
+
+  function testItStoresAValue() {
+    SimpleStorage simpleStorage = SimpleStorage(DeployedAddresses.SimpleStorage());
+
+    simpleStorage.set(89);
+
+    uint expected = 89;
+
+    Assert.equal(simpleStorage.get(), expected, "It should store the value 89.");
+  }
+
+}

test/simplestorage.js

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+var SimpleStorage = artifacts.require("./SimpleStorage.sol");
+
+contract('SimpleStorage', function(accounts) {
+
+  it("...should store the value 89.", function() {
+    return SimpleStorage.deployed().then(function(instance) {
+      simpleStorageInstance = instance;
+
+      return simpleStorageInstance.set(89, {from: accounts[0]});
+    }).then(function() {
+      return simpleStorageInstance.get.call();
+    }).then(function(storedData) {
+      assert.equal(storedData, 89, "The value 89 was not stored.");
+    });
+  });
+
+});