[#4183] Implemented Contract#profit_budget and Deliverable#profit_budget.

test/unit/fixed_deliverable_test.rb

@@ -0,0 +1,24 @@
+require File.dirname(__FILE__) + '/../test_helper'
+
+class FixedDeliverableTest < ActiveSupport::TestCase
+  context "#profit_budget" do
+    context "with no labor budget, no overhead budget" do
+      should "equal the total" do
+        assert_equal 1000, FixedDeliverable.generate(:total => 1_000).profit_budget
+      end
+    end
+
+    should "be the total minus the sum of all of the budgets" do
+      deliverable = FixedDeliverable.generate(:total => 1_000)
+      LaborBudget.generate!(:deliverable => deliverable, :budget => 200)
+      LaborBudget.generate!(:deliverable => deliverable, :budget => 200)
+      OverheadBudget.generate!(:deliverable => deliverable, :budget => 200)
+
+      assert_equal 400, deliverable.profit_budget
+    end
+
+    should "be 0 if there is no total" do
+      assert_equal 0, FixedDeliverable.generate(:total => nil).profit_budget
+    end
+  end
+end