diff --git a/test/inputs/schema/nested-intersection-union.1.fail.union.json b/test/inputs/schema/nested-intersection-union.1.fail.union.json
new file mode 100644
index 000000000..cedeb3f00
--- /dev/null
+++ b/test/inputs/schema/nested-intersection-union.1.fail.union.json
@@ -0,0 +1,8 @@
+{
+    "input": [
+        {
+            "content": "valid item"
+        },
+        ["this array is not a valid item"]
+    ]
+}
diff --git a/test/inputs/schema/nested-intersection-union.1.json b/test/inputs/schema/nested-intersection-union.1.json
new file mode 100644
index 000000000..3018c7a10
--- /dev/null
+++ b/test/inputs/schema/nested-intersection-union.1.json
@@ -0,0 +1,20 @@
+{
+    "input": [
+        {
+            "content": "hello",
+            "id": "item-1",
+            "output": "42",
+            "summary": "all fields present"
+        },
+        {
+            "content": "just a message"
+        },
+        {
+            "id": "item-2",
+            "output": "function result"
+        },
+        {
+            "summary": "just reasoning"
+        }
+    ]
+}
diff --git a/test/inputs/schema/nested-intersection-union.schema b/test/inputs/schema/nested-intersection-union.schema
new file mode 100644
index 000000000..0453188e3
--- /dev/null
+++ b/test/inputs/schema/nested-intersection-union.schema
@@ -0,0 +1,58 @@
+{
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "type": "object",
+    "additionalProperties": false,
+    "properties": {
+        "input": {
+            "type": "array",
+            "items": {
+                "oneOf": [
+                    { "$ref": "#/definitions/Message" },
+                    { "$ref": "#/definitions/Item" }
+                ]
+            }
+        }
+    },
+    "required": ["input"],
+    "definitions": {
+        "Message": {
+            "type": "object",
+            "properties": {
+                "content": { "type": "string" }
+            },
+            "required": ["content"]
+        },
+        "Item": {
+            "oneOf": [
+                { "$ref": "#/definitions/FunctionOutput" },
+                { "$ref": "#/definitions/ReasoningItem" }
+            ]
+        },
+        "FunctionOutput": {
+            "allOf": [
+                { "$ref": "#/definitions/BaseItem" },
+                {
+                    "type": "object",
+                    "properties": {
+                        "output": { "type": "string" }
+                    },
+                    "required": ["output"]
+                }
+            ]
+        },
+        "BaseItem": {
+            "type": "object",
+            "properties": {
+                "id": { "type": "string" }
+            },
+            "required": ["id"]
+        },
+        "ReasoningItem": {
+            "type": "object",
+            "properties": {
+                "summary": { "type": "string" }
+            },
+            "required": ["summary"]
+        }
+    }
+}
diff --git a/test/unit/nested-intersection-union.test.ts b/test/unit/nested-intersection-union.test.ts
deleted file mode 100644
index d9c3a4a5f..000000000
--- a/test/unit/nested-intersection-union.test.ts
+++ /dev/null
@@ -1,67 +0,0 @@
-import { InputData, JSONSchemaInput, quicktype } from "quicktype-core";
-import { describe, expect, test } from "vitest";
-
-const schema = JSON.stringify({
-    $schema: "http://json-schema.org/draft-07/schema#",
-    type: "object",
-    properties: {
-        input: {
-            type: "array",
-            items: {
-                oneOf: [
-                    { $ref: "#/definitions/Message" },
-                    { $ref: "#/definitions/Item" },
-                ],
-            },
-        },
-    },
-    definitions: {
-        Message: {
-            type: "object",
-            properties: { content: { type: "string" } },
-            required: ["content"],
-        },
-        Item: {
-            oneOf: [
-                { $ref: "#/definitions/FunctionOutput" },
-                { $ref: "#/definitions/ReasoningItem" },
-            ],
-        },
-        FunctionOutput: {
-            allOf: [
-                { $ref: "#/definitions/BaseItem" },
-                {
-                    type: "object",
-                    properties: { output: { type: "string" } },
-                    required: ["output"],
-                },
-            ],
-        },
-        BaseItem: {
-            type: "object",
-            properties: { id: { type: "string" } },
-            required: ["id"],
-        },
-        ReasoningItem: {
-            type: "object",
-            properties: { summary: { type: "string" } },
-            required: ["summary"],
-        },
-    },
-});
-
-describe("nested intersections in unions", () => {
-    test("flattens an array item union containing an indirect allOf", async () => {
-        const schemaInput = new JSONSchemaInput(undefined);
-        await schemaInput.addSource({ name: "TopLevel", schema });
-        const inputData = new InputData();
-        inputData.addInput(schemaInput);
-
-        const result = await quicktype({ inputData, lang: "rust" });
-        const output = result.lines.join("\n");
-
-        expect(output).toContain("pub struct Item");
-        expect(output).toContain("output: Option<String>");
-        expect(output).toContain("summary: Option<String>");
-    });
-});