From a1d4f48bea8ecc4411eb081697b90fc4f48837d8 Mon Sep 17 00:00:00 2001
From: John Grimes <John.Grimes@csiro.au>
Date: Fri, 19 Jan 2024 12:16:38 +1000
Subject: [PATCH] Add additional union tests

---
 tests/content/union_all.json | 71 ++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)

diff --git a/tests/content/union_all.json b/tests/content/union_all.json
index 2a5ff5d..5c790c6 100644
--- a/tests/content/union_all.json
+++ b/tests/content/union_all.json
@@ -225,6 +225,77 @@
         ]
       },
       "expect": [{ "family": "f1" }, { "family": "f1" }, { "family": "f2" }, { "family": "f3" }]
+    },
+    {
+      "title": "unionAll with one empty operand",
+      "view": {
+        "resource": "Patient",
+        "select": [
+          {
+            "unionAll": [
+              {
+                "forEach": "name.where(false)",
+                "column": [{ "path": "family", "name": "family" }]
+              },
+              {
+                "forEach": "contact.name",
+                "column": [{ "path": "family", "name": "family" }]
+              }
+            ]
+          }
+        ]
+      },
+      "expect": [{ "family": "f2" }, { "family": "f3" }]
+    },
+    {
+      "title": "unionAll with empty result",
+      "view": {
+        "resource": "Patient",
+        "select": [
+          {
+            "column": [
+              {
+                "path": "id",
+                "name": "id"
+              }
+            ],
+            "unionAll": [
+              {
+                "forEach": "{}",
+                "column": [{ "path": "family", "name": "family" }]
+              }
+            ]
+          }
+        ]
+      },
+      "expect": []
+    },
+    {
+      "title": "unionAll with empty result and forEachOrNull",
+      "view": {
+        "resource": "Patient",
+        "select": [
+          {
+            "column": [
+              {
+                "path": "id",
+                "name": "id"
+              }
+            ],
+            "unionAll": [
+              {
+                "forEachOrNull": "{}",
+                "column": [{ "path": "family", "name": "family" }]
+              },
+              {
+                "forEachOrNull": "{}",
+                "column": [{ "path": "family", "name": "family" }]
+              }
+            ]
+          }
+        ]
+      },
+      "expect": [{"id": "p1", "family": null},{"id": "p1", "family": null}]
     }
   ]
 }