test(zod): add snapshot tests for binary format and contentMediaType

- Add two new test scenarios to 3.1.x.test.ts:
  - content-binary.json + zod: verifies z.instanceof(Blob/File) for format: binary
  - content-media-type.yaml + zod: verifies z.instanceof(Blob/File) for contentMediaType

- Add content-media-type.yaml spec (backport from merged PR #3431)
- Apply parser fix for contentMediaType → binary format inference (backport from #3431)
- Update string-with-format zod snapshot to reflect corrected binary output

Snapshots confirm:
  z.union([z.instanceof(Blob), z.instanceof(File)]) for all binary fields

Author: j-ibarra

packages/openapi-ts-tests/main/test/3.1.x.test.ts

@@ -199,6 +199,24 @@ describe(`OpenAPI ${version}`, () => {
       }),
       description: 'handles contentMediaType schema property for file uploads',
     },
+    {
+      config: createConfig({
+        input: 'content-binary.json',
+        output: 'content-binary-zod',
+        plugins: ['@hey-api/typescript', 'zod'],
+      }),
+      description:
+        'generates z.instanceof(Blob/File) for binary format with zod',
+    },
+    {
+      config: createConfig({
+        input: 'content-media-type.yaml',
+        output: 'content-media-type-zod',
+        plugins: ['@hey-api/typescript', 'zod'],
+      }),
+      description:
+        'generates z.instanceof(Blob/File) for contentMediaType with zod',
+    },
     {
       config: createConfig({
         input: 'content-types.yaml',

packages/openapi-ts-tests/main/test/__snapshots__/3.1.x/content-binary-zod/index.ts

@@ -0,0 +1,3 @@
+// This file is auto-generated by @hey-api/openapi-ts
+
+export type { ClientOptions, GetBarData, GetBarResponse, GetBarResponses, GetFooData, GetFooResponse, GetFooResponses } from './types.gen';

packages/openapi-ts-tests/main/test/__snapshots__/3.1.x/content-binary-zod/types.gen.ts

@@ -0,0 +1,31 @@
+// This file is auto-generated by @hey-api/openapi-ts
+
+export type ClientOptions = {
+    baseUrl: `${string}://${string}` | (string & {});
+};
+
+export type GetFooData = {
+    body?: never;
+    path?: never;
+    query?: never;
+    url: '/foo';
+};
+
+export type GetFooResponses = {
+    200: string;
+};
+
+export type GetFooResponse = GetFooResponses[keyof GetFooResponses];
+
+export type GetBarData = {
+    body?: never;
+    path?: never;
+    query?: never;
+    url: '/bar';
+};
+
+export type GetBarResponses = {
+    200: Blob | File;
+};
+
+export type GetBarResponse = GetBarResponses[keyof GetBarResponses];

packages/openapi-ts-tests/main/test/__snapshots__/3.1.x/content-binary-zod/zod.gen.ts

@@ -0,0 +1,19 @@
+// This file is auto-generated by @hey-api/openapi-ts
+
+import { z } from 'zod';
+
+export const zGetFooData = z.object({
+    body: z.optional(z.never()),
+    path: z.optional(z.never()),
+    query: z.optional(z.never())
+});
+
+export const zGetFooResponse = z.string();
+
+export const zGetBarData = z.object({
+    body: z.optional(z.never()),
+    path: z.optional(z.never()),
+    query: z.optional(z.never())
+});
+
+export const zGetBarResponse = z.union([z.instanceof(Blob), z.instanceof(File)]);

packages/openapi-ts-tests/main/test/__snapshots__/3.1.x/content-media-type-zod/index.ts

@@ -0,0 +1,3 @@
+// This file is auto-generated by @hey-api/openapi-ts
+
+export type { ClientOptions, FileUploadRequest, FileUploadRequestTyped, UploadFileData, UploadFileResponses, UploadFileTypedData, UploadFileTypedResponses } from './types.gen';

packages/openapi-ts-tests/main/test/__snapshots__/3.1.x/content-media-type-zod/types.gen.ts

@@ -0,0 +1,47 @@
+// This file is auto-generated by @hey-api/openapi-ts
+
+export type ClientOptions = {
+    baseUrl: `${string}://${string}` | (string & {});
+};
+
+export type FileUploadRequest = {
+    /**
+     * Binary file content
+     */
+    file: Blob | File;
+};
+
+export type FileUploadRequestTyped = {
+    /**
+     * Binary file content with explicit string type
+     */
+    file: Blob | File;
+};
+
+export type UploadFileData = {
+    body?: FileUploadRequest;
+    path?: never;
+    query?: never;
+    url: '/upload';
+};
+
+export type UploadFileResponses = {
+    /**
+     * OK
+     */
+    200: unknown;
+};
+
+export type UploadFileTypedData = {
+    body?: FileUploadRequestTyped;
+    path?: never;
+    query?: never;
+    url: '/upload-typed';
+};
+
+export type UploadFileTypedResponses = {
+    /**
+     * OK
+     */
+    200: unknown;
+};

packages/openapi-ts-tests/main/test/__snapshots__/3.1.x/content-media-type-zod/zod.gen.ts

@@ -0,0 +1,23 @@
+// This file is auto-generated by @hey-api/openapi-ts
+
+import { z } from 'zod';
+
+export const zFileUploadRequest = z.object({
+    file: z.union([z.instanceof(Blob), z.instanceof(File)])
+});
+
+export const zFileUploadRequestTyped = z.object({
+    file: z.union([z.instanceof(Blob), z.instanceof(File)])
+});
+
+export const zUploadFileData = z.object({
+    body: z.optional(zFileUploadRequest),
+    path: z.optional(z.never()),
+    query: z.optional(z.never())
+});
+
+export const zUploadFileTypedData = z.object({
+    body: z.optional(zFileUploadRequestTyped),
+    path: z.optional(z.never()),
+    query: z.optional(z.never())
+});

packages/openapi-ts-tests/zod/v4/__snapshots__/3.1.x/mini/string-with-format/zod.gen.ts

@@ -3,5 +3,5 @@
 import * as z from 'zod/mini';
 
 export const zFoo = z.object({
-    foo: z.optional(z.array(z.union([z.string(), z.string()])))
+    foo: z.optional(z.array(z.union([z.union([z.instanceof(Blob), z.instanceof(File)]), z.string()])))
 });