added null tests

tests/results/test_results_package.py

@@ -860,6 +860,13 @@ def test_calculate_captital_investment_no_dr_idv(
 
         assert_frame_equal(actual, expected)
 
+    def test_null(self, null: ResultsPackage):
+        """ """
+        package = null
+        with raises(KeyError) as ex:
+            package.capital_investment()
+        assert "Cannot calculate CapitalInvestment due to missing data" in str(ex)
+
 
 class TestDiscountedCapitalInvestment:
     def test_calculate_discounted_captital_investment(
@@ -891,6 +898,16 @@ def test_calculate_discounted_captital_investment(
 
         assert_frame_equal(actual, expected)
 
+    def test_null(self, null: ResultsPackage):
+        """ """
+        package = null
+        with raises(KeyError) as ex:
+            package.discounted_capital_investment()
+        assert (
+            "Cannot calculate DiscountedCapitalInvestment due to missing data"
+            in str(ex)
+        )
+
 
 class TestDiscountedOperationalCost:
     def test_calculate_discounted_operational_cost(
@@ -926,6 +943,15 @@ def test_calculate_discounted_operational_cost(
 
         assert_frame_equal(actual, expected)
 
+    def test_null(self, null: ResultsPackage):
+        """ """
+        package = null
+        with raises(KeyError) as ex:
+            package.discounted_operational_cost()
+        assert "Cannot calculate DiscountedOperationalCost due to missing data" in str(
+            ex
+        )
+
 
 class TestDiscountedCostByTechnology:
     def test_calculate_discounted_cost_by_technology(
@@ -959,6 +985,15 @@ def test_calculate_discounted_cost_by_technology(
 
         assert_frame_equal(actual, expected)
 
+    def test_null(self, null: ResultsPackage):
+        """ """
+        package = null
+        with raises(KeyError) as ex:
+            package.discounted_technology_cost()
+        assert "Cannot calculate DiscountedCostByTechnology due to missing data" in str(
+            ex
+        )
+
 
 class TestTotalDiscountedCost:
     def test_calculate_total_discounted_cost(
@@ -983,6 +1018,13 @@ def test_calculate_total_discounted_cost(
 
         assert_frame_equal(actual, expected)
 
+    def test_null(self, null: ResultsPackage):
+        """ """
+        package = null
+        with raises(KeyError) as ex:
+            package.total_discounted_cost()
+        assert "Cannot calculate TotalDiscountedCost due to missing data" in str(ex)
+
 
 class TestCapitalRecoveryFactor:
     def test_crf(self, region, discount_rate_idv, operational_life):