[AVS] Account for null med changes summary field (#28230)

* Account for nulled med changes summary

* Re-add test for med changes subsections

src/applications/avs/components/YourTreatmentPlan.jsx

@@ -13,9 +13,10 @@ const YourTreatmentPlan = props => {
   const { avs } = props;
   const { medChangesSummary, orders } = avs;
 
-  const medChanges = !allArraysEmpty(medChangesSummary)
-    ? medChangesSummary
-    : null;
+  const medChanges =
+    medChangesSummary && !allArraysEmpty(medChangesSummary)
+      ? medChangesSummary
+      : null;
 
   const medsIntro = (
     <>

src/applications/avs/tests/components/YourTreatmentPlan.unit.spec.jsx

@@ -56,9 +56,7 @@ describe('Avs: Your Treatment Plan', () => {
     delete avs.orders;
     delete avs.patientInstructions;
     delete avs.clinicalReminders;
-    avs.medChangesSummary.discontinuedMeds = [];
-    avs.medChangesSummary.newMedications = [];
-    avs.medChangesSummary.changedMedications = [];
+    avs.medChangesSummary = null;
     const props = { avs };
     const screen = render(<YourTreatmentPlan {...props} />);
     expect(screen.queryByTestId('new-orders-heading')).to.not.exist;
@@ -73,4 +71,14 @@ describe('Avs: Your Treatment Plan', () => {
     expect(screen.queryByTestId('discontinued-medications-list')).to.not.exist;
     expect(screen.queryByTestId('changed-medications-list')).to.not.exist;
   });
+
+  it('Med Changes section is not shown if all sub-sections are empty', async () => {
+    const avs = replacementFunctions.cloneDeep(avsData);
+    avs.medChangesSummary.discontinuedMeds = [];
+    avs.medChangesSummary.newMedications = [];
+    avs.medChangesSummary.changedMedications = [];
+    const props = { avs };
+    const screen = render(<YourTreatmentPlan {...props} />);
+    expect(screen.queryByTestId('changed-medications-list')).to.not.exist;
+  });
 });