Fix tests and tf

Author: francisco-videira-nhs

infrastructure/terraform/components/api/module_lambda_get_letter_data.tf

@@ -72,7 +72,9 @@ data "aws_iam_policy_document" "get_letter_data_lambda" {
 
   statement {
     sid       = "S3GetObjectForPresign"
-    actions   = ["s3:GetObject"]
+    actions   = [
+      "s3:GetObject",
+      "s3:ListBucket"] # allows 404 response instead of 403 if object missing
     resources = ["${module.s3bucket_test_letters.arn}/*"]
   }
 }

lambdas/api-handler/src/__tests__/index.test.ts

@@ -0,0 +1,13 @@
+import * as handlers from "../index";
+jest.mock('../config/lambda-config', () => ({
+  lambdaConfig: {
+    SUPPLIER_ID_HEADER: 'nhsd-supplier-id',
+    APIM_CORRELATION_HEADER: 'nhsd-correlation-id'
+  }
+}));
+
+it("exports", () => {
+  expect(handlers.getLetters).toBeDefined();
+  expect(handlers.patchLetter).toBeDefined();
+  expect(handlers.getLetterData).toBeDefined();
+});