limit funds improvements

test/LimitBalance.js

@@ -0,0 +1,38 @@
+contract('LimitBalance', function(accounts) {
+  var lb;
+
+  beforeEach(function() {
+    return LimitBalanceMock.new().then(function(deployed) {
+      lb = deployed;
+    });
+  });
+
+  var LIMIT = 1000;
+
+  it("should expose limit", function(done) {
+    return lb.limit()
+      .then(function(limit) { 
+        assert.equal(limit, LIMIT);
+      })
+      .then(done)
+  });
+
+  it("should allow sending below limit", function(done) {
+    var amount = 1;
+    return lb.limitedDeposit({value: amount})
+      .then(function() { 
+        assert.equal(web3.eth.getBalance(lb.address), amount);
+      })
+      .then(done)
+  });
+
+  it("shouldnt allow sending above limit", function(done) {
+    var amount = 1100;
+    return lb.limitedDeposit({value: amount})
+      .catch(function(error) {
+        if (error.message.search('invalid JUMP') == -1) throw error
+      })
+      .then(done)
+  });
+
+});