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node_modules/zod/src/v4/classic/tests/union.test.ts

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+import { expect, expectTypeOf, test } from "vitest";
+
+import * as z from "zod/v4";
+
+test("function parsing", () => {
+  const schema = z.union([z.string().refine(() => false), z.number().refine(() => false)]);
+  const result = schema.safeParse("asdf");
+  expect(result.success).toEqual(false);
+});
+
+test("union 2", () => {
+  const result = z.union([z.number(), z.string().refine(() => false)]).safeParse("a");
+  expect(result.success).toEqual(false);
+});
+
+test("return valid over invalid", () => {
+  const schema = z.union([
+    z.object({
+      email: z.string().email(),
+    }),
+    z.string(),
+  ]);
+  expect(schema.parse("asdf")).toEqual("asdf");
+  expect(schema.parse({ email: "asdlkjf@lkajsdf.com" })).toEqual({
+    email: "asdlkjf@lkajsdf.com",
+  });
+});
+
+test("return errors from both union arms", () => {
+  const result = z.union([z.number(), z.string().refine(() => false)]).safeParse("a");
+  expect(result.success).toEqual(false);
+  if (!result.success) {
+    expect(result.error.issues).toMatchInlineSnapshot(`
+      [
+        {
+          "code": "invalid_union",
+          "errors": [
+            [
+              {
+                "code": "invalid_type",
+                "expected": "number",
+                "message": "Invalid input: expected number, received string",
+                "path": [],
+              },
+            ],
+            [
+              {
+                "code": "custom",
+                "message": "Invalid input",
+                "path": [],
+              },
+            ],
+          ],
+          "message": "Invalid input",
+          "path": [],
+        },
+      ]
+    `);
+  }
+});
+
+test("options getter", async () => {
+  const union = z.union([z.string(), z.number()]);
+  union.options[0].parse("asdf");
+  union.options[1].parse(1234);
+  await union.options[0].parseAsync("asdf");
+  await union.options[1].parseAsync(1234);
+});
+
+test("readonly union", async () => {
+  const options = [z.string(), z.number()] as const;
+  const union = z.union(options);
+  union.parse("asdf");
+  union.parse(12);
+});
+
+test("union inferred types", () => {
+  const test = z.object({}).or(z.array(z.object({})));
+
+  type Test = z.output<typeof test>; // <— any
+  expectTypeOf<Test>().toEqualTypeOf<Record<string, never> | Array<Record<string, never>>>();
+});
+
+test("union values", () => {
+  const schema = z.union([z.literal("a"), z.literal("b"), z.literal("c")]);
+
+  expect(schema._zod.values).toMatchInlineSnapshot(`
+    Set {
+      "a",
+      "b",
+      "c",
+    }
+  `);
+});