Separate out SSI eligibility from the general uncapped_ssi file (#4942

)

changelog_entry.yaml

@@ -0,0 +1,4 @@
+- bump: minor
+  changes:
+    added:
+    - Separate out SSI eligibility from the general uncapped_ssi file.

policyengine_us/tests/policy/baseline/gov/ssa/ssi/is_ssi_eligible.yaml

@@ -0,0 +1,23 @@
+- name: Eligible
+  period: 2022
+  input:
+    meets_ssi_resource_test: true
+    is_ssi_eligible_individual: true
+  output:
+    is_ssi_eligible: true
+
+- name: Resource ineligible
+  period: 2022
+  input:
+    meets_ssi_resource_test: false
+    is_ssi_eligible_individual: true
+  output:
+    is_ssi_eligible: false
+
+- name: Ineligible individual
+  period: 2022
+  input:
+    meets_ssi_resource_test: true
+    is_ssi_eligible_individual: false
+  output:
+    is_ssi_eligible: false

policyengine_us/tests/policy/baseline/gov/ssa/ssi/uncapped_ssi.yaml

@@ -47,3 +47,21 @@
     ssi_countable_income: 0
   output:
     uncapped_ssi: 0
+
+- name: Eligible using defined for 
+  period: 2022
+  input:
+    ssi_amount_if_eligible: 100
+    is_ssi_eligible: true
+    ssi_countable_income: 0
+  output:
+    uncapped_ssi: 100
+
+- name: Ineligible using defined for 
+  period: 2022
+  input:
+    ssi_amount_if_eligible: 100
+    is_ssi_eligible: false
+    ssi_countable_income: 0
+  output:
+    uncapped_ssi: 0

policyengine_us/variables/gov/ssa/ssi/is_ssi_eligible.py

@@ -0,0 +1,13 @@
+from policyengine_us.model_api import *
+
+
+class is_ssi_eligible(Variable):
+    value_type = float
+    entity = Person
+    label = "Is SSI eligible person"
+    definition_period = YEAR
+
+    def formula(person, period, parameters):
+        meets_resource_test = person("meets_ssi_resource_test", period)
+        eligible = person("is_ssi_eligible_individual", period)
+        return meets_resource_test & eligible

policyengine_us/variables/gov/ssa/ssi/uncapped_ssi.py

@@ -8,10 +8,9 @@ class uncapped_ssi(Variable):
     unit = USD
     documentation = "Maximum SSI, less countable income (can be below zero)."
     definition_period = YEAR
+    defined_for = "is_ssi_eligible"
 
     def formula(person, period, parameters):
         amount = person("ssi_amount_if_eligible", period)
-        meets_resource_test = person("meets_ssi_resource_test", period)
-        eligible = person("is_ssi_eligible_individual", period)
         countable_income = person("ssi_countable_income", period)
-        return (meets_resource_test & eligible) * (amount - countable_income)
+        return amount - countable_income