Added Claimable contract as an extension of Ownable with the Claimable tests

test/Claimable.js

@@ -0,0 +1,60 @@
+contract('Claimable', function(accounts) {
+
+  it("should have an owner", function(done) {
+    var claimable = Claimable.deployed();
+    return claimable.owner()
+      .then(function(owner) {
+        assert.isTrue(owner != 0);
+      })
+      .then(done)
+  });
+
+  it("changes pendingOwner after transfer", function(done) {
+    var claimable = Claimable.deployed();
+    return claimable.transfer(accounts[1])
+      .then(function() {
+        return claimable.pendingOwner();
+      })
+      .then(function(pendingOwner) {
+        assert.isTrue(pendingOwner === accounts[1]);
+      })
+      .then(done)
+  });
+
+  it("should prevent to claimOwnership from no pendingOwner", function(done) {
+    var claimable = Claimable.deployed();
+    return claimable.claimOwnership({from: accounts[2]})
+      .then(function() {
+        return claimable.owner();
+      })
+      .then(function(owner) {
+        assert.isTrue(owner != accounts[2]);
+      })
+      .then(done)
+  });
+
+  it("changes allow pending owner to claim ownership", function(done) {
+    var claimable = Claimable.deployed();
+    return claimable.claimOwnership({from: accounts[1]})
+      .then(function() {
+        return claimable.owner();
+      })
+      .then(function(owner) {
+        assert.isTrue(owner === accounts[1]);
+      })
+      .then(done)
+  });
+
+  it("should prevent non-owners from transfering" ,function(done) {
+    var claimable = Claimable.deployed();
+    return claimable.transfer(accounts[2], {from: accounts[2]})
+      .then(function() {
+        return claimable.pendingOwner();
+      })
+      .then(function(pendingOwner) {
+        assert.isFalse(pendingOwner === accounts[2]);
+      })
+      .then(done)
+  });
+
+});